*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    color-scheme: dark;
    --bg: #0a0a0a;
    --panel: #141414;
    --panel-2: #1c1c1c;
    --text: #f5f5f5;
    --muted: #a3a3a3;
    --border: #2a2a2a;
    --accent: #f97316;
    --accent-hover: #fb923c;
    --accent-soft: rgba(249, 115, 22, 0.15);
    --danger: #ef4444;
    --danger-hover: #f87171;
    --success: #22c55e;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    --radius: 12px;
    --radius-sm: 8px;
    --sidebar-width: 280px;
    --message-own-bg: rgba(249, 115, 22, 0.12);
    --message-own-border: rgba(249, 115, 22, 0.35);
    --message-other-bg: var(--panel);
    --message-other-border: var(--border);
    --input-bg: #0f0f0f;
    --focus-ring: rgba(249, 115, 22, 0.35);
    --send-btn-text: #050505;

    /* Typography — add WOFF2 files under /public/assets/fonts/ then uncomment @font-face below */
    --font-ui: Rajdhani, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* Interface size (overridden by html[data-text-size]) — default matches previous large tier */
    --interface-scale: 1.125;
    --font-size-message: 1.125rem;
    --font-size-ui: 1rem;
    --font-size-small: 0.8125rem;
    --font-size-input: 1.125rem;
    --font-size-body: 1.125rem;
    --icon-size: 1.125rem;
    --icon-size-header: 1.6875rem;
    --icon-size-composer: 1.828rem;
    --icon-size-close: 1.406rem;
    --icon-btn-size: 2.95rem;
    --emoji-size: 1.3rem;
    --emoji-button-size: 2.25rem;
    --emoji-grid-gap: 0.2rem;
    --emoji-tab-font-size: var(--font-size-small);
    --emoji-tab-padding-y: 0.25rem;
    --emoji-tab-padding-x: 0.625rem;
    --emoji-search-font-size: var(--font-size-ui);
    --emoji-search-padding-y: 0.5rem;
    --emoji-search-padding-x: 0.625rem;
    --emoji-search-min-height: 2.375rem;
    --button-min-height: 2.75rem;
    --header-height: 4.125rem;
    --composer-min-height: 6.75rem;
    --message-body-size: var(--font-size-message);
    --message-author-size: var(--font-size-ui);
    --message-time-size: var(--font-size-small);
    --message-bubble-padding-y: 0.75rem;
    --message-bubble-padding-x: 0.875rem;
    --message-list-gap: 1rem;
    --message-list-scrollbar-size: 18px;
    --message-list-scrollbar-gap: 1rem;
    --message-list-scrollbar-scale: 1;
    --message-list-scrollbar-width-moz: auto;
    --message-scrollbar-track: #050505;
    --message-scrollbar-thumb: #525252;
    --message-scrollbar-thumb-moz: #a86838;
    --message-scrollbar-thumb-border: rgba(249, 115, 22, 0.5);
    --message-scrollbar-thumb-hover: #6b6b6b;
    --message-scrollbar-thumb-border-hover: rgba(249, 115, 22, 0.85);
    --message-item-gap: 0.75rem;
    --message-avatar-size: 2.8125rem;
    --message-avatar-font-size: 0.88rem;
    --composer-text-size: var(--font-size-input);
    --composer-footer-padding-y: 1rem;
    --composer-footer-padding-x: 1.125rem;
    --composer-row-gap: 0.875rem;
    --composer-tools-gap: 0.375rem;
    --composer-tools-width: calc(var(--icon-btn-size) * 2 + var(--composer-tools-gap));
    --composer-secondary-indent: calc(var(--composer-tools-width) + var(--composer-row-gap));
    --composer-textarea-min-height: 5.625rem;
    --composer-textarea-padding-y: 0.8125rem;
    --composer-textarea-padding-x: 1rem;
    --sidebar-row-padding-y: 0.75rem;
    --sidebar-row-padding-x: 0.875rem;
    --sidebar-header-padding-y: 0.875rem;
    --sidebar-header-padding-x: 1rem;
    --send-btn-font-size: var(--font-size-ui);
    --send-btn-min-width: 6.75rem;
    --send-btn-padding-x: 1.75rem;
    --send-btn-scale: 1;
    --single-emoji-size: 3.125rem;
}

/*
 * Self-hosted fonts (preferred — do not use Google Fonts CDN here):
 *   /public/assets/fonts/Rajdhani-Medium.woff2      (500)
 *   /public/assets/fonts/Rajdhani-SemiBold.woff2    (600)
 *   /public/assets/fonts/Rajdhani-Bold.woff2        (700)
 *   /public/assets/fonts/Inter-Regular.woff2        (400)
 *   /public/assets/fonts/Inter-Medium.woff2         (500)
 *   /public/assets/fonts/Inter-SemiBold.woff2       (600)
 *   /public/assets/fonts/Inter-Bold.woff2           (700)
 *
 * @font-face {
 *     font-family: "Rajdhani";
 *     src: url("fonts/Rajdhani-SemiBold.woff2") format("woff2");
 *     font-weight: 600;
 *     font-style: normal;
 *     font-display: swap;
 * }
 * @font-face {
 *     font-family: "Inter";
 *     src: url("fonts/Inter-Regular.woff2") format("woff2");
 *     font-weight: 400;
 *     font-style: normal;
 *     font-display: swap;
 * }
 */

html[data-text-size="default"],
html:not([data-text-size]) {
    --interface-scale: 1.125;
    --font-size-message: 1.125rem;
    --font-size-ui: 1rem;
    --font-size-small: 0.8125rem;
    --font-size-input: 1.125rem;
    --font-size-body: 1.125rem;
    --icon-size: 1.125rem;
    --icon-size-header: 1.6875rem;
    --icon-size-composer: 1.828rem;
    --icon-size-close: 1.406rem;
    --icon-btn-size: 2.95rem;
    --emoji-size: 1.3rem;
    --emoji-button-size: 2.25rem;
    --emoji-grid-gap: 0.2rem;
    --emoji-tab-font-size: var(--font-size-small);
    --emoji-tab-padding-y: 0.25rem;
    --emoji-tab-padding-x: 0.625rem;
    --emoji-search-font-size: var(--font-size-ui);
    --emoji-search-padding-y: 0.5rem;
    --emoji-search-padding-x: 0.625rem;
    --emoji-search-min-height: 2.375rem;
    --button-min-height: 2.75rem;
    --header-height: 4.125rem;
    --composer-min-height: 6.75rem;
    --message-avatar-size: 2.8125rem;
    --message-avatar-font-size: 0.88rem;
    --composer-textarea-min-height: 6.125rem;
    --composer-textarea-padding-y: 0.875rem;
    --composer-textarea-padding-x: 1.0625rem;
    --composer-footer-padding-y: 1.0625rem;
    --composer-row-gap: 1rem;
    --send-btn-min-width: 7rem;
    --send-btn-padding-x: 1.875rem;
    --single-emoji-size: 3.125rem;
    --message-list-scrollbar-size: 18px;
    --message-list-scrollbar-gap: 1rem;
    --message-list-scrollbar-width-moz: auto;
}

html[data-text-size="compact"] {
    --interface-scale: 1;
    --font-size-message: 1rem;
    --font-size-ui: 0.875rem;
    --font-size-small: 0.75rem;
    --font-size-input: 1rem;
    --font-size-body: 1rem;
    --icon-size: 1rem;
    --icon-size-header: 1.5rem;
    --icon-size-composer: 1.625rem;
    --icon-size-close: 1.25rem;
    --icon-btn-size: 2.625rem;
    --emoji-size: 1.15rem;
    --emoji-button-size: 2rem;
    --emoji-grid-gap: 0.15rem;
    --emoji-tab-font-size: var(--font-size-small);
    --emoji-tab-padding-y: 0.2rem;
    --emoji-tab-padding-x: 0.55rem;
    --emoji-search-font-size: var(--font-size-ui);
    --emoji-search-padding-y: 0.45rem;
    --emoji-search-padding-x: 0.55rem;
    --emoji-search-min-height: 2.125rem;
    --button-min-height: 2.5rem;
    --header-height: 3.75rem;
    --composer-min-height: 6rem;
    --message-avatar-size: 2.5rem;
    --message-avatar-font-size: 0.78rem;
    --composer-textarea-min-height: 5.625rem;
    --composer-textarea-padding-y: 0.8125rem;
    --composer-textarea-padding-x: 1rem;
    --composer-footer-padding-y: 1rem;
    --composer-row-gap: 0.875rem;
    --send-btn-min-width: 4.5rem;
    --send-btn-padding-x: 1.5rem;
    --single-emoji-size: 2.5rem;
    --message-list-scrollbar-size: 8px;
    --message-list-scrollbar-gap: 0.75rem;
    --message-list-scrollbar-width-moz: thin;
}

html[data-text-size="large"] {
    --interface-scale: 1.25;
    --font-size-message: 1.25rem;
    --font-size-ui: 1.0625rem;
    --font-size-small: 0.875rem;
    --font-size-input: 1.25rem;
    --font-size-body: 1.25rem;
    --icon-size: 1.25rem;
    --icon-size-header: 1.875rem;
    --icon-size-composer: 2.03rem;
    --icon-size-close: 1.5625rem;
    --icon-btn-size: 3.28rem;
    --emoji-size: 1.45rem;
    --emoji-button-size: 2.5rem;
    --emoji-grid-gap: 0.22rem;
    --emoji-tab-font-size: var(--font-size-small);
    --emoji-tab-padding-y: 0.28rem;
    --emoji-tab-padding-x: 0.7rem;
    --emoji-search-font-size: var(--font-size-ui);
    --emoji-search-padding-y: 0.55rem;
    --emoji-search-padding-x: 0.7rem;
    --emoji-search-min-height: 2.625rem;
    --button-min-height: 3rem;
    --header-height: 4.375rem;
    --composer-min-height: 7.25rem;
    --message-avatar-size: 3.125rem;
    --message-avatar-font-size: 0.98rem;
    --composer-footer-padding-y: 1.125rem;
    --composer-footer-padding-x: 1.25rem;
    --composer-row-gap: 1rem;
    --composer-textarea-min-height: 6.875rem;
    --composer-textarea-padding-y: 0.9375rem;
    --composer-textarea-padding-x: 1.125rem;
    --send-btn-font-size: calc(var(--font-size-ui) * 1.05);
    --send-btn-min-width: 7.5rem;
    --send-btn-padding-x: 2rem;
    --single-emoji-size: 3.875rem;
    --message-list-scrollbar-size: 26px;
    --message-list-scrollbar-gap: 1.35rem;
    --message-list-scrollbar-width-moz: auto;
}

html[data-text-size="extra-large"] {
    --interface-scale: 1.66;
    --font-size-message: 1.66rem;
    --font-size-ui: 1.41rem;
    --font-size-small: 1.16rem;
    --font-size-input: 1.66rem;
    --font-size-body: 1.66rem;
    --icon-size: 1.66rem;
    --icon-size-header: 2.49rem;
    --icon-size-composer: 2.7rem;
    --icon-size-close: 2.075rem;
    --icon-btn-size: 4.36rem;
    --emoji-size: 1.92rem;
    --emoji-button-size: 3.3rem;
    --emoji-grid-gap: 0.3rem;
    --emoji-tab-font-size: var(--font-size-small);
    --emoji-tab-padding-y: 0.35rem;
    --emoji-tab-padding-x: 0.9rem;
    --emoji-search-font-size: var(--font-size-ui);
    --emoji-search-padding-y: 0.7rem;
    --emoji-search-padding-x: 0.9rem;
    --emoji-search-min-height: 3.25rem;
    --button-min-height: 3.75rem;
    --header-height: 5.25rem;
    --composer-min-height: 8.75rem;
    --message-avatar-size: 4.15rem;
    --message-avatar-font-size: 1.3rem;
    --composer-footer-padding-y: 1.375rem;
    --composer-footer-padding-x: 1.5rem;
    --composer-row-gap: 1.125rem;
    --composer-textarea-min-height: 8.5rem;
    --composer-textarea-padding-y: 1.125rem;
    --composer-textarea-padding-x: 1.375rem;
    --send-btn-font-size: calc(var(--font-size-ui) * 1.05);
    --send-btn-min-width: 9.5rem;
    --send-btn-padding-x: 2.25rem;
    --single-emoji-size: 4.75rem;
    --message-list-scrollbar-size: 34px;
    --message-list-scrollbar-gap: 1.75rem;
    --message-list-scrollbar-width-moz: auto;
}

html.compact-mode {
    --header-height: calc(var(--header-height) * 0.82);
    --composer-min-height: calc(var(--composer-min-height) * 0.78);
    --message-bubble-padding-y: 0.5rem;
    --message-bubble-padding-x: 0.625rem;
    --message-list-gap: 0.5rem;
    --message-item-gap: 0.5rem;
    --composer-footer-padding-y: 0.625rem;
    --composer-footer-padding-x: 0.75rem;
    --composer-row-gap: 0.5rem;
    --composer-tools-gap: 0.2rem;
    --composer-textarea-min-height: calc(var(--composer-textarea-min-height) * 0.78);
    --composer-textarea-padding-y: 0.5rem;
    --composer-textarea-padding-x: 0.75rem;
    --sidebar-row-padding-y: 0.5rem;
    --sidebar-row-padding-x: 0.625rem;
    --sidebar-header-padding-y: 0.65rem;
    --sidebar-header-padding-x: 0.75rem;
    --send-btn-scale: 0.88;
    --emoji-grid-gap: calc(var(--emoji-grid-gap) * 0.85);
}

html[data-theme="light"] {
    color-scheme: light;
    --bg: #f4f4f5;
    --panel: #ffffff;
    --panel-2: #fafafa;
    --text: #18181b;
    --muted: #71717a;
    --border: #e4e4e7;
    --accent: #ea580c;
    --accent-hover: #f97316;
    --accent-soft: rgba(234, 88, 12, 0.12);
    --danger: #dc2626;
    --danger-hover: #ef4444;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --message-own-bg: rgba(234, 88, 12, 0.1);
    --message-own-border: rgba(234, 88, 12, 0.25);
    --message-other-bg: var(--panel);
    --message-other-border: var(--border);
    --input-bg: #ffffff;
    --focus-ring: rgba(234, 88, 12, 0.25);
    --message-scrollbar-track: #e4e4e7;
    --message-scrollbar-thumb: #a1a1aa;
    --message-scrollbar-thumb-moz: #d97706;
    --message-scrollbar-thumb-border: rgba(234, 88, 12, 0.45);
    --message-scrollbar-thumb-hover: #71717a;
    --message-scrollbar-thumb-border-hover: rgba(234, 88, 12, 0.75);
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

button,
input,
textarea {
    font: inherit;
    color: inherit;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    font-family: var(--font-ui);
    font-size: var(--font-size-ui);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    background: transparent;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-sm {
    padding: 0.45rem 0.75rem;
    font-size: var(--font-size-ui);
}

.btn-primary {
    font-family: var(--font-ui);
    font-weight: 600;
    background: var(--accent);
    color: var(--send-btn-text);
    border-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--send-btn-text);
}

.btn-primary:disabled {
    color: var(--send-btn-text);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.btn-secondary {
    font-family: var(--font-ui);
    font-weight: 600;
    background: var(--panel-2);
    color: var(--text);
    border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--muted);
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--muted);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--panel-2);
    color: var(--text);
}

.btn-icon {
    width: var(--icon-btn-size);
    height: var(--icon-btn-size);
    min-width: var(--icon-btn-size);
    min-height: var(--icon-btn-size);
    padding: 0;
    flex-shrink: 0;
}

.btn-text {
    background: transparent;
    color: var(--muted);
    border: none;
    padding: 0.25rem 0.5rem;
    font-size: var(--font-size-small);
}

.btn-text:hover:not(:disabled) {
    color: var(--danger);
}

.btn-block {
    width: 100%;
}

.icon-users,
.icon-focus {
    display: block;
    width: var(--icon-size-header);
    height: var(--icon-size-header);
    flex-shrink: 0;
}

.icon-close {
    display: block;
    width: var(--icon-size-close);
    height: var(--icon-size-close);
    position: relative;
    flex-shrink: 0;
}

.btn-secondary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.btn-ghost:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.btn-icon.btn-ghost:focus-visible {
    background: var(--panel-2);
    color: var(--text);
}

.icon-close::before,
.icon-close::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: var(--icon-size-close);
    height: 2px;
    background: currentColor;
}

.icon-close::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.icon-close::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.alert {
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    margin: 0 0 1rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.12);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.35);
    font-size: 0.92rem;
    line-height: 1.45;
}

.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background:
        radial-gradient(circle at top right, rgba(249, 115, 22, 0.08), transparent 40%),
        var(--bg);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    box-shadow: var(--shadow);
}

.auth-card h1 {
    margin: 0 0 0.25rem;
    font-family: var(--font-ui);
    font-size: 1.65rem;
    letter-spacing: -0.02em;
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 10px;
    background: var(--accent);
    color: var(--send-btn-text);
    font-family: var(--font-ui);
    font-weight: 700;
    font-size: 1.1rem;
}

.auth-subtitle {
    margin: 0 0 1.5rem;
    color: var(--muted);
}

.auth-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.auth-tab {
    flex: 1;
    text-align: center;
    padding: 0.65rem 0.75rem;
    color: var(--muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.auth-tab:hover {
    color: var(--text);
    background: var(--panel-2);
}

.auth-tab.is-active {
    color: var(--text);
    border-bottom-color: var(--accent);
}

.auth-card:has(#register:target) .auth-tab[href="#register"],
.auth-card:has(#register.auth-panel.is-active) .auth-tab[href="#register"] {
    color: var(--text);
    border-bottom-color: var(--accent);
}

.auth-card:has(#register:target) .auth-tab[href="#signin"],
.auth-card:has(#register.auth-panel.is-active) .auth-tab[href="#signin"] {
    color: var(--muted);
    border-bottom-color: transparent;
}

.auth-panel {
    display: none;
}

#signin.auth-panel.is-active,
#register.auth-panel.is-active {
    display: block;
}

#signin {
    display: block;
}

#register:target {
    display: block;
}

#register:target ~ #signin {
    display: none;
}

#register.auth-panel.is-active {
    display: block;
}

#register.auth-panel.is-active ~ #signin {
    display: none;
}

.auth-hint {
    margin: -0.35rem 0 1rem;
    color: var(--muted);
    font-size: 0.85rem;
}

.field-group {
    margin-bottom: 1.15rem;
}

.auth-form label,
.settings-form label {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--text);
    font-family: var(--font-ui);
    font-size: var(--font-size-ui);
    font-weight: 500;
}

.field-help {
    margin: 0.4rem 0 0;
    color: var(--muted);
    font-size: var(--font-size-small);
    line-height: 1.4;
}

.field-error {
    margin: 0.4rem 0 0;
    color: var(--danger);
    font-size: 0.82rem;
    line-height: 1.4;
}

.field-error[hidden] {
    display: none;
}

.password-field {
    position: relative;
    display: flex;
    align-items: stretch;
}

.password-field input {
    padding-right: 4.5rem;
}

.btn-password-toggle {
    position: absolute;
    top: 50%;
    right: 0.45rem;
    transform: translateY(-50%);
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--panel-2);
    color: var(--text);
    padding: 0.3rem 0.55rem;
    font-size: 0.78rem;
    cursor: pointer;
    line-height: 1.2;
}

.btn-password-toggle:hover {
    border-color: var(--muted);
}

.btn-password-toggle:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.password-strength {
    margin: 0.4rem 0 0;
    font-size: 0.82rem;
    min-height: 1.2rem;
}

.password-strength-weak {
    color: #fbbf24;
}

.password-strength-good {
    color: var(--success);
}

.auth-form input,
.settings-form input[type="text"] {
    width: 100%;
    margin-bottom: 0;
    padding: 0.75rem 0.85rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--input-bg);
    color: var(--text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.auth-form input::placeholder,
.message-form textarea::placeholder {
    color: var(--muted);
    opacity: 0.88;
}

.auth-form input:focus,
.settings-form input[type="text"]:focus,
.message-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.auth-form input.is-invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.auth-form .btn-block {
    margin-top: 0.5rem;
    padding: 0.75rem 1rem;
}

.chat-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    height: 100vh;
    overflow: hidden;
    max-width: 100vw;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: var(--header-height);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--panel);
    flex-shrink: 0;
    z-index: 20;
}

.app-header-start,
.app-header-end {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.app-header-end {
    flex-wrap: wrap;
    justify-content: flex-end;
}

.app-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.app-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 8px;
    background: var(--accent);
    color: var(--send-btn-text);
    font-family: var(--font-ui);
    font-weight: 700;
    font-size: 1.05rem;
    flex-shrink: 0;
}

.app-brand-text h1 {
    margin: 0;
    font-family: var(--font-ui);
    font-size: 1.125rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.app-tagline {
    margin: 0;
    font-size: var(--font-size-small);
    color: var(--muted);
}

.header-user {
    margin: 0;
    font-size: var(--font-size-ui);
    color: var(--muted);
    white-space: nowrap;
}

.header-user strong {
    color: var(--text);
    font-family: var(--font-ui);
    font-weight: 600;
}

.logout-form {
    margin: 0;
}

.chat-layout {
    display: flex;
    flex: 1;
    min-height: 0;
    min-width: 0;
    position: relative;
    overflow: hidden;
}

.chat-shell {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    min-height: 0;
}

.chat-main {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    padding: 0.75rem 1rem 0;
}

.chat-status {
    min-height: 1.25rem;
    color: var(--accent);
    font-size: var(--font-size-ui);
    margin-bottom: 0.35rem;
    flex-shrink: 0;
}

.message-list-wrap {
    position: relative;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    container-type: inline-size;
    container-name: chat-viewport;
}

.message-list {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: var(--message-list-gap);
    padding: 0.5rem var(--message-list-scrollbar-gap) 0.5rem 0;
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
    container-type: inline-size;
    container-name: message-list;
}

/* Firefox uses scrollbar-color (no ::-webkit-scrollbar borders). Keep WebKit rules out of Firefox — partial WebKit support there blocks standard styling. */
@supports (-moz-appearance: none) {
    html:not(.use-custom-message-scrollbar) .message-list {
        scrollbar-color: var(--message-scrollbar-thumb-moz) var(--message-scrollbar-track);
        scrollbar-width: var(--message-list-scrollbar-width-moz, auto);
    }
}

html.use-custom-message-scrollbar .message-list {
    scrollbar-width: none;
}

.message-list-custom-scrollbar {
    display: none;
}

html.use-custom-message-scrollbar .message-list-custom-scrollbar {
    display: block;
    position: absolute;
    top: 0.5rem;
    right: 0;
    bottom: 0.5rem;
    width: calc(var(--message-list-scrollbar-size) * var(--message-list-scrollbar-scale, 1));
    z-index: 3;
    pointer-events: none;
}

html.use-custom-message-scrollbar .message-list-custom-scrollbar-track {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--message-scrollbar-track);
    border-radius: 999px;
    pointer-events: auto;
}

html.use-custom-message-scrollbar .message-list-custom-scrollbar-thumb {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    min-height: 2.5rem;
    background-color: var(--message-scrollbar-thumb-moz);
    border: 2px solid var(--message-scrollbar-thumb-border);
    border-radius: 999px;
    box-sizing: border-box;
    cursor: grab;
    touch-action: none;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

html.use-custom-message-scrollbar .message-list-custom-scrollbar-thumb:hover {
    background-color: var(--message-scrollbar-thumb-hover);
    border-color: var(--message-scrollbar-thumb-border-hover);
}

html.use-custom-message-scrollbar .message-list-custom-scrollbar-thumb:active {
    cursor: grabbing;
    background-color: var(--message-scrollbar-thumb-hover);
    border-color: var(--message-scrollbar-thumb-border-hover);
}

html.use-custom-message-scrollbar .message-list-custom-scrollbar[hidden] {
    display: none;
}

@supports not (-moz-appearance: none) {
    .message-list {
        scrollbar-color: var(--message-scrollbar-thumb) var(--message-scrollbar-track);
    }

    .message-list::-webkit-scrollbar {
        width: calc(var(--message-list-scrollbar-size) * var(--message-list-scrollbar-scale, 1));
    }

    .message-list::-webkit-scrollbar-track {
        background: var(--message-scrollbar-track);
        border-radius: 999px;
    }

    .message-list::-webkit-scrollbar-thumb {
        background-color: var(--message-scrollbar-thumb);
        border: 2px solid var(--message-scrollbar-thumb-border);
        border-radius: 999px;
        background-clip: padding-box;
        min-height: 2.5rem;
        cursor: grab;
    }

    .message-list::-webkit-scrollbar-thumb:hover {
        background-color: var(--message-scrollbar-thumb-hover);
        border-color: var(--message-scrollbar-thumb-border-hover);
    }

    .message-list::-webkit-scrollbar-thumb:active {
        cursor: grabbing;
        background-color: var(--message-scrollbar-thumb-hover);
        border-color: var(--message-scrollbar-thumb-border-hover);
    }
}

.message-list-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 0 0 0.65rem;
    pointer-events: none;
    background: linear-gradient(to top, var(--bg) 35%, transparent);
}

.message-list-footer:has(.last-updated-notice[hidden]) {
    display: none;
}

.message-list-wrap:has(.last-updated-notice:not([hidden])) .message-list {
    padding-bottom: 2.35rem;
}

.new-messages-indicator {
    position: absolute;
    left: 50%;
    bottom: 0.75rem;
    transform: translateX(-50%);
    z-index: 10;
    border: 1px solid var(--accent);
    border-radius: 999px;
    background: var(--panel);
    color: var(--accent);
    padding: 0.45rem 1rem;
    font-family: var(--font-ui);
    font-size: var(--font-size-ui);
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: background-color 0.15s ease, color 0.15s ease;
}

.new-messages-indicator:hover,
.new-messages-indicator:focus-visible {
    background: var(--accent);
    color: var(--send-btn-text);
    outline: none;
}

.new-messages-indicator[hidden] {
    display: none;
}

.message-item {
    display: flex;
    gap: var(--message-item-gap);
    max-width: min(85%, 640px);
    align-self: flex-start;
}

.message-own {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: var(--message-avatar-size);
    height: var(--message-avatar-size);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-ui);
    font-size: var(--message-avatar-font-size);
    font-weight: 700;
    flex-shrink: 0;
    border: 2px solid var(--border);
    background: var(--panel-2);
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    overflow: hidden;
}

.message-avatar.avatar-image,
img.message-avatar {
    object-fit: cover;
    padding: 0;
    background: var(--panel-2);
}

.avatar-orange-gradient {
    background: linear-gradient(145deg, #c2410c 0%, #f97316 55%, #fdba74 100%);
    border-color: rgba(249, 115, 22, 0.55);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.avatar-blue-gradient {
    background: linear-gradient(145deg, #1d4ed8 0%, #3b82f6 55%, #93c5fd 100%);
    border-color: rgba(59, 130, 246, 0.55);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.avatar-purple-gradient {
    background: linear-gradient(145deg, #7e22ce 0%, #a855f7 55%, #d8b4fe 100%);
    border-color: rgba(168, 85, 247, 0.55);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.avatar-green-gradient {
    background: linear-gradient(145deg, #15803d 0%, #22c55e 55%, #86efac 100%);
    border-color: rgba(34, 197, 94, 0.55);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.avatar-gray-steel {
    background: linear-gradient(145deg, #3f3f46 0%, #71717a 55%, #d4d4d8 100%);
    border-color: rgba(161, 161, 170, 0.55);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.avatar-neon-orange {
    background: radial-gradient(circle at 30% 25%, #ffedd5 0%, #f97316 35%, #7c2d12 100%);
    border-color: #fb923c;
    color: #fff;
    box-shadow: 0 0 0 1px rgba(251, 146, 60, 0.35), inset 0 0 12px rgba(255, 237, 213, 0.15);
}

.avatar-music-dark {
    background: linear-gradient(160deg, #0f172a 0%, #312e81 50%, #1e1b4b 100%);
    border-color: rgba(99, 102, 241, 0.45);
    color: #e0e7ff;
    box-shadow: inset 0 0 0 1px rgba(129, 140, 248, 0.2);
}

.avatar-synthwave {
    background: linear-gradient(145deg, #701a75 0%, #db2777 45%, #7c3aed 100%);
    border-color: rgba(236, 72, 153, 0.55);
    color: #fdf2f8;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.avatar-minimal-black {
    background: linear-gradient(180deg, #18181b 0%, #09090b 100%);
    border-color: #3f3f46;
    color: #fafafa;
}

.avatar-type-initials {
    background: linear-gradient(180deg, #27272a 0%, #18181b 100%);
    border-color: #52525b;
    color: #fafafa;
}

.avatar-fire {
    background: linear-gradient(145deg, #991b1b 0%, #ef4444 40%, #f97316 100%);
    border-color: rgba(239, 68, 68, 0.55);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

/* Legacy preset class aliases */
.avatar-initials { background: var(--panel-2); }
.avatar-orange { background: linear-gradient(145deg, #c2410c, #f97316); border-color: #ea580c; color: #fff; }
.avatar-blue { background: linear-gradient(145deg, #1d4ed8, #3b82f6); border-color: #2563eb; color: #fff; }
.avatar-gray { background: linear-gradient(145deg, #3f3f46, #71717a); border-color: #525252; color: #fff; }
.avatar-green { background: linear-gradient(145deg, #15803d, #22c55e); border-color: #16a34a; color: #fff; }
.avatar-purple { background: linear-gradient(145deg, #7e22ce, #a855f7); border-color: #9333ea; color: #fff; }

.message-content {
    min-width: 0;
    flex: 1;
}

.message-content--media {
    flex: 0 1 auto;
    width: fit-content;
    max-width: 100%;
}

.message-content--media-only {
    flex: 0 1 auto;
    width: fit-content;
    max-width: 100%;
}

.message-own .message-content--media-only {
    margin-left: auto;
}

.message-own.message-has-delete > .message-content.message-content--media-only {
    justify-self: end;
    width: fit-content;
    max-width: 100%;
}

.message-own.message-has-delete.message-item--media-only {
    grid-template-columns: auto var(--message-avatar-size);
}

.message-own .message-bubble--media .message-media-wrap {
    display: flex;
    justify-content: flex-end;
}

.message-item:not(.message-own) .message-bubble--media .message-media-wrap {
    display: flex;
    justify-content: flex-start;
}

.message-bubble--media-only .message-header {
    width: fit-content;
    max-width: 100%;
}

.message-own .message-bubble--media-only .message-header {
    margin-left: auto;
}

.message-bubble {
    background: var(--message-other-bg);
    border: 1px solid var(--message-other-border);
    border-radius: var(--radius);
    padding: var(--message-bubble-padding-y) var(--message-bubble-padding-x);
}

.message-bubble--media {
    width: fit-content;
    max-width: 100%;
}

.message-bubble--media-only {
    width: fit-content;
    max-width: min(460px, 100%);
    padding: 0.5rem;
}

.message-own .message-bubble {
    background: var(--message-own-bg);
    border-color: var(--message-own-border);
}

.message-header {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: baseline;
    margin-bottom: 0.25rem;
}

.message-own .message-header {
    justify-content: flex-end;
}

.message-author {
    font-family: var(--font-ui);
    font-weight: 600;
    font-size: var(--message-author-size);
}

.message-time {
    color: var(--muted);
    font-size: var(--message-time-size);
}

.message-body {
    white-space: pre-wrap;
    word-break: break-word;
    font-family: var(--font-body);
    font-size: var(--message-body-size);
    line-height: 1.5;
}

.message--single-emoji .message-body,
.message-body.message-body--single-emoji {
    font-size: var(--single-emoji-size);
    line-height: 1;
}

.message--single-emoji .message-body-text,
.message-body.message-body--single-emoji .message-body-text {
    display: inline-block;
    font-size: inherit;
    line-height: 1;
    padding: 0.125rem 0;
    white-space: normal;
}

.message--single-emoji .message-bubble {
    overflow: visible;
}

.message-link {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.message-link:hover,
.message-link:focus {
    color: var(--accent-hover);
}

.message-link:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}

.link-preview-tooltip {
    position: absolute;
    z-index: 50;
    max-width: min(18rem, calc(100vw - 1rem));
    padding: 0.55rem 0.7rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--panel);
    box-shadow: var(--shadow);
    pointer-events: none;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    font-size: var(--font-size-small);
    line-height: 1.35;
}

.link-preview-tooltip[hidden] {
    display: none;
}

.link-preview-host {
    color: var(--text);
    font-weight: 600;
}

.link-preview-url {
    color: var(--muted);
    word-break: break-all;
}

.link-preview-note {
    color: var(--muted);
    font-size: calc(var(--font-size-small) * 0.92);
}

.message-embed,
.message-embed--youtube,
.message-youtube-embed {
    display: block;
    margin-top: 0.35rem;
    width: 100%;
    max-width: 100%;
    line-height: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
    background: #000;
}

.message-content--embed {
    flex: 1 1 auto;
    min-width: 0;
    width: auto;
    max-width: none;
}

.message-bubble--embed {
    width: fit-content;
    max-width: 100%;
}

.message-item.message-item--has-embed {
    max-width: none;
    width: fit-content;
}

@container message-list (min-width: 900px) {
    .message-youtube-embed {
        width: 50cqw;
        max-width: 50cqw;
    }

    .message-item.message-item--has-embed {
        max-width: calc(50cqw + var(--message-avatar-size) + var(--message-item-gap));
        flex-shrink: 0;
    }
}

@media (min-width: 900px) {
    .message-own.message-has-delete.message-item--has-embed {
        grid-template-columns: minmax(0, 1fr) var(--message-avatar-size);
    }
}

.message-body-text > .message-embed:first-child,
.message-body-text > .message-youtube-embed:first-child,
.message-body > .message-embed:first-child,
.message-body > .message-youtube-embed:first-child {
    margin-top: 0;
}

.message-youtube-iframe,
.responsive-video.message-youtube-iframe {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    border: 0;
    background: #000;
}

@media (max-width: 899px) {
    .message-item.message-item--has-embed {
        width: 100%;
        max-width: min(95%, 640px);
    }

    .message-youtube-embed {
        width: 100%;
        max-width: 100%;
    }
}

.message-deleted {
    color: var(--muted);
    font-style: italic;
}

.message-item.message-deleted-pending-removal .message-bubble {
    opacity: 0.82;
}

.message-item.message-deleted-pending-removal .message-header {
    opacity: 0.72;
}

.message-item.message-deleted-pending-removal .message-avatar {
    opacity: 0.72;
}

.message-item.message-removing {
    overflow: hidden;
    pointer-events: none;
    transition:
        opacity 0.3s ease,
        height 0.32s ease,
        max-height 0.32s ease,
        margin-bottom 0.32s ease;
}

@media (prefers-reduced-motion: reduce) {
    .message-item.message-removing {
        transition: none;
    }
}

.message-attachment {
    margin-top: 0.35rem;
}

.message-body--attachment-only .message-media-wrap,
.message-body--attachment-only .message-attachment-video,
.message-body--attachment-only .message-attachment-audio {
    margin-top: 0;
}

.message-media-wrap {
    display: block;
    line-height: 0;
}

.message-attachment-link,
.message-media-trigger {
    display: block;
    width: fit-content;
    max-width: 100%;
    padding: 0;
    margin: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 0;
    line-height: 0;
    background: transparent;
    cursor: pointer;
    font: inherit;
    color: inherit;
}

.message-attachment-link:hover,
.message-media-trigger:hover {
    opacity: 0.92;
}

.message-attachment-link:focus-visible,
.message-media-trigger:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.message-media,
.message-attachment-img {
    display: block;
    width: auto;
    max-width: min(420px, 100%);
    height: auto;
    max-height: 420px;
    object-fit: contain;
    border-radius: 12px;
    background: var(--panel-2);
}

.message-attachment-video {
    display: block;
    width: auto;
    max-width: min(420px, 100%);
    height: auto;
    max-height: 420px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--panel-2);
    object-fit: contain;
}

.message-attachment-audio {
    display: block;
    width: min(100%, 320px);
    margin-top: 0.15rem;
}

.message-reply-card {
    display: block;
    width: 100%;
    margin: 0 0 0.45rem;
    padding: 0.35rem 0.5rem 0.35rem 0.55rem;
    border: 0;
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: rgba(255, 255, 255, 0.04);
    text-align: left;
    cursor: pointer;
    font: inherit;
    color: inherit;
}

html[data-theme="light"] .message-reply-card {
    background: rgba(0, 0, 0, 0.04);
}

.message-reply-card:hover,
.message-reply-card:focus-visible {
    background: rgba(255, 255, 255, 0.07);
}

html[data-theme="light"] .message-reply-card:hover,
html[data-theme="light"] .message-reply-card:focus-visible {
    background: rgba(0, 0, 0, 0.06);
}

.message-reply-card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.message-reply-author {
    display: block;
    font-size: calc(var(--font-size-small) * 0.95);
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.1rem;
}

.message-reply-preview {
    display: block;
    font-size: calc(var(--font-size-small) * 0.92);
    color: var(--muted);
    line-height: 1.35;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.message-reactions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-top: 0.35rem;
}

.message-reaction-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.28rem;
    min-height: 1.55rem;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    font-size: calc(var(--font-size-small) * 0.95);
    line-height: 1;
    cursor: pointer;
    font-family: var(--font-ui);
}

html[data-theme="light"] .message-reaction-chip {
    background: rgba(0, 0, 0, 0.04);
}

.message-reaction-chip:hover,
.message-reaction-chip:focus-visible {
    border-color: rgba(252, 105, 41, 0.45);
}

.message-reaction-chip.is-active {
    border-color: var(--accent);
    background: rgba(252, 105, 41, 0.14);
    color: var(--text);
}

.message-reaction-emoji {
    font-size: 1rem;
    line-height: 1;
}

.message-reaction-count {
    font-size: calc(var(--font-size-small) * 0.9);
    color: var(--muted);
    font-variant-numeric: tabular-nums;
}

.message-reaction-chip.is-active .message-reaction-count {
    color: var(--text);
}

.message-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    gap: 0.2rem;
    margin: 0.2rem 0 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-2px);
    transition:
        opacity 0.18s ease,
        transform 0.18s ease,
        visibility 0.18s ease;
}

.message-item.message-has-actions:hover .message-actions,
.message-item.message-has-actions:focus-within .message-actions,
.message-item.message-has-actions.is-selected .message-actions {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.btn-message-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    min-height: 1.75rem;
    padding: 0.28rem 0.55rem;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    transition:
        background-color 0.15s ease,
        border-color 0.15s ease,
        color 0.15s ease;
}

.btn-message-action:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px var(--focus-ring);
    opacity: 1;
    visibility: visible;
}

.btn-message-action:hover,
.btn-message-action:focus-visible {
    background: rgba(15, 15, 15, 0.72);
    border-color: rgba(255, 255, 255, 0.08);
    color: #e5e5e5;
}

html[data-theme="light"] .btn-message-action:hover,
html[data-theme="light"] .btn-message-action:focus-visible {
    background: rgba(24, 24, 27, 0.08);
    border-color: var(--border);
    color: var(--text);
}

.btn-message-action--delete:hover,
.btn-message-action--delete:focus-visible {
    color: var(--danger-hover);
}

.btn-message-action--delete:hover .icon-trash,
.btn-message-action--delete:focus-visible .icon-trash {
    color: var(--danger);
}

.icon-trash {
    display: block;
    width: 0.875rem;
    height: 0.875rem;
    flex-shrink: 0;
}

.compact-mode .icon-trash {
    width: 0.8rem;
    height: 0.8rem;
}

.btn-message-delete,
.btn-message-action.btn-message-delete {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    min-height: 1.75rem;
    padding: 0.28rem 0.55rem;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition:
        background-color 0.15s ease,
        border-color 0.15s ease,
        color 0.15s ease;
}

.message-own.message-has-delete {
    display: flex;
    gap: var(--message-item-gap);
    max-width: min(85%, 640px);
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-own.message-has-actions {
    align-self: flex-end;
}

.message-own.message-has-delete > .message-avatar,
.message-own.message-has-actions > .message-avatar {
    flex-shrink: 0;
}

.btn-message-delete-label,
.btn-message-action-label {
    letter-spacing: 0.01em;
}

.compact-mode .btn-message-action,
.compact-mode .btn-message-delete {
    min-height: 1.6rem;
    padding: 0.22rem 0.48rem;
    font-size: 0.7rem;
}

.reaction-picker {
    position: fixed;
    z-index: 55;
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem;
    max-width: min(18rem, calc(100vw - 1rem));
    padding: 0.4rem;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

.reaction-picker[hidden] {
    display: none;
}

.reaction-picker-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    font-size: 1.15rem;
    line-height: 1;
    cursor: pointer;
}

.reaction-picker-btn:hover,
.reaction-picker-btn:focus-visible {
    background: rgba(255, 255, 255, 0.08);
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

html[data-theme="light"] .reaction-picker-btn:hover,
html[data-theme="light"] .reaction-picker-btn:focus-visible {
    background: rgba(0, 0, 0, 0.06);
}

.media-filename-tooltip {
    position: absolute;
    z-index: 50;
    max-width: min(18rem, calc(100vw - 1rem));
    padding: 0.35rem 0.55rem;
    border-radius: var(--radius-sm);
    background: rgba(12, 12, 14, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f4f4f5;
    font-size: calc(var(--font-size-small) * 0.92);
    line-height: 1.3;
    pointer-events: none;
    box-shadow: var(--shadow);
}

.media-filename-tooltip[hidden] {
    display: none;
}

.composer-reply-preview {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin: 0 0 0.45rem;
    padding: 0.45rem 0.55rem;
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: rgba(255, 255, 255, 0.04);
}

html[data-theme="light"] .composer-reply-preview {
    background: rgba(0, 0, 0, 0.04);
}

.composer-reply-preview[hidden] {
    display: none;
}

.composer-reply-main {
    flex: 1;
    min-width: 0;
}

.composer-reply-label {
    display: block;
    font-size: calc(var(--font-size-small) * 0.95);
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.1rem;
}

.composer-reply-text {
    display: block;
    font-size: calc(var(--font-size-small) * 0.92);
    color: var(--muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.composer-reply-cancel {
    flex-shrink: 0;
    min-width: 1.75rem;
    min-height: 1.75rem;
    padding: 0;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
}

.composer-reply-cancel:hover,
.composer-reply-cancel:focus-visible {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.message-item.is-highlighted .message-bubble {
    outline: 2px solid rgba(252, 105, 41, 0.55);
    outline-offset: 2px;
}

.composer-footer {
    position: relative;
    flex-shrink: 0;
    padding: var(--composer-footer-padding-y) var(--composer-footer-padding-x);
    border-top: 1px solid var(--border);
    background: var(--panel);
    min-width: 0;
    width: 100%;
}

.message-form {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    min-width: 0;
}

.composer-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: stretch;
    gap: var(--composer-row-gap);
    min-width: 0;
    width: 100%;
    position: relative;
}

.composer-tools {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--composer-tools-gap);
    flex-shrink: 0;
    align-self: stretch;
}

.composer-tools #emoji-toggle {
    font-size: var(--icon-size-composer);
    line-height: 1;
}

.icon-attach {
    display: block;
    width: var(--icon-size-composer);
    height: var(--icon-size-composer);
    flex-shrink: 0;
}

.message-form textarea {
    grid-column: 2;
    grid-row: 1;
    flex: 1;
    min-width: 0;
    width: 100%;
    resize: none;
    min-height: var(--composer-textarea-min-height);
    max-height: 12rem;
    padding: var(--composer-textarea-padding-y) var(--composer-textarea-padding-x);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--input-bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--composer-text-size);
    line-height: 1.45;
    align-self: stretch;
}

.composer-row > .sr-only {
    grid-column: 2;
    grid-row: 1;
}

.btn.btn-send {
    --send-btn-effective-min-width: max(calc(var(--send-btn-min-width) * var(--send-btn-scale)), 4.5rem);
    --send-btn-effective-padding-x: max(calc(var(--send-btn-padding-x) * var(--send-btn-scale)), 1.25rem);
    grid-column: 3;
    grid-row: 1;
    box-sizing: border-box;
    min-width: var(--send-btn-effective-min-width);
    width: auto;
    min-height: max(var(--composer-textarea-min-height), var(--button-min-height));
    height: 100%;
    padding-block: 0.75rem;
    padding-inline: var(--send-btn-effective-padding-x);
    font-family: var(--font-ui);
    font-size: var(--send-btn-font-size);
    font-weight: 900;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
    background: var(--accent);
    color: var(--send-btn-text);
    border-color: var(--accent);
    align-self: stretch;
    justify-self: stretch;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.send-label {
    display: inline-block;
    white-space: nowrap;
    line-height: 1;
}

.btn.btn-send:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--send-btn-text);
}

.btn.btn-send:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--focus-ring);
}

.btn.btn-send:disabled,
.btn.btn-send.is-uploading {
    opacity: 0.68;
    color: var(--send-btn-text);
    cursor: not-allowed;
}

.attachment-preview {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.45rem;
    margin: 0.625rem 0 0 var(--composer-secondary-indent);
    padding: 0.45rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-2);
    max-width: 24rem;
}

.attachment-preview[hidden] {
    display: none;
}

.attachment-preview-main {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    min-width: 0;
}

.attachment-preview-details {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
    flex: 1;
}

.attachment-preview-media {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.attachment-upload-status {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.attachment-upload-status[hidden] {
    display: none;
}

.attachment-progress {
    height: 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    overflow: hidden;
}

.attachment-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    transition: width 160ms ease;
    border-radius: inherit;
}

.attachment-progress.is-indeterminate .attachment-progress-fill {
    width: 35%;
    animation: attachment-progress-indeterminate 1.2s ease-in-out infinite;
}

@keyframes attachment-progress-indeterminate {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(350%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .attachment-progress.is-indeterminate .attachment-progress-fill {
        animation: none;
        width: 100%;
        opacity: 0.45;
    }
}

.attachment-progress-text {
    font-size: var(--font-size-small);
    color: var(--muted);
}

.attachment-preview.is-upload-error .attachment-progress-text {
    color: var(--danger);
}

.attachment-preview.is-uploading .attachment-preview-remove:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.attachment-preview-img {
    display: block;
    width: 4rem;
    height: 4rem;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--panel);
}

.attachment-preview-video {
    display: block;
    width: 8rem;
    height: 4.5rem;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--panel);
}

.attachment-preview-audio {
    display: block;
    width: min(100%, 12rem);
    height: 2rem;
}

.attachment-preview-label {
    min-width: 0;
    font-size: 0.8rem;
    color: var(--muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.attachment-preview-remove {
    font-size: 0.8rem;
}

.last-updated-notice {
    position: static;
    z-index: 2;
    margin: 0;
    padding: 0.28rem 0.55rem;
    font-size: var(--font-size-small);
    color: var(--muted);
    font-style: italic;
    opacity: 0.65;
    line-height: 1.25;
    text-align: left;
    background: rgba(10, 10, 10, 0.55);
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    cursor: pointer;
    pointer-events: auto;
    transition: color 0.15s ease, opacity 0.15s ease, background-color 0.15s ease;
}

html[data-theme="light"] .last-updated-notice {
    background: rgba(244, 244, 245, 0.72);
}

.last-updated-notice:hover:not(:disabled) {
    color: var(--text);
    opacity: 0.88;
    background: rgba(20, 20, 20, 0.72);
}

html[data-theme="light"] .last-updated-notice:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.92);
}

.last-updated-notice:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    opacity: 0.9;
}

.last-updated-notice:disabled {
    cursor: wait;
    opacity: 0.45;
}

.last-updated-notice[hidden] {
    display: none;
}

@keyframes last-updated-flash {
    0%,
    100% {
        color: var(--muted);
        opacity: 0.62;
    }

    45% {
        color: var(--accent);
        opacity: 0.95;
    }
}

.last-updated-notice.is-flashing {
    animation: last-updated-flash 0.85s ease;
}

.chat-toast {
    position: absolute;
    top: 0.5rem;
    left: 50%;
    z-index: 12;
    transform: translateX(-50%) translateY(-0.35rem);
    padding: 0.42rem 0.9rem;
    border-radius: 999px;
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    font-size: var(--font-size-small);
    color: var(--muted);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.chat-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.chat-toast.is-error {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.35);
}

.chat-toast[hidden] {
    display: none;
}

@media (prefers-reduced-motion: reduce) {
    .last-updated-notice.is-flashing {
        animation: none;
        color: var(--accent);
    }

    .chat-toast {
        transition: none;
    }
}

.emoji-picker {
    position: absolute;
    bottom: calc(100% + 0.35rem);
    left: 1rem;
    display: flex;
    flex-direction: column;
    width: min(28rem, calc(100vw - 2rem));
    max-height: 22rem;
    padding: calc(0.5rem * var(--interface-scale) / 1.125);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    z-index: 15;
}

.emoji-picker[hidden] {
    display: none;
}

.emoji-picker-toolbar {
    margin-bottom: 0.45rem;
}

.emoji-search {
    width: 100%;
    min-height: var(--emoji-search-min-height);
    padding: var(--emoji-search-padding-y) var(--emoji-search-padding-x);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--input-bg);
    color: var(--text);
    font-size: var(--emoji-search-font-size);
}

.emoji-picker-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.45rem;
    max-height: 4.5rem;
    overflow-y: auto;
}

.emoji-tab {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    padding: var(--emoji-tab-padding-y) var(--emoji-tab-padding-x);
    font-size: var(--emoji-tab-font-size);
    cursor: pointer;
}

.emoji-tab.is-active {
    color: var(--text);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.emoji-picker-grid {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: var(--emoji-grid-gap);
    overflow-y: auto;
    max-height: 13rem;
    padding-right: 0.15rem;
}

@media (min-width: 900px) {
    .emoji-picker {
        width: min(32rem, calc(100vw - 2rem));
        max-height: 24rem;
    }

    .emoji-picker-grid {
        grid-template-columns: repeat(12, minmax(0, 1fr));
        max-height: 16rem;
    }
}

@media (max-width: 480px) {
    .emoji-picker-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
        max-height: 11rem;
    }
}

.emoji-btn {
    width: 100%;
    min-height: var(--emoji-button-size);
    aspect-ratio: 1;
    border: none;
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
    font-size: var(--emoji-size);
    line-height: 1;
}

.emoji-btn:hover,
.emoji-btn:focus-visible {
    background: var(--panel-2);
    outline: none;
}

.emoji-tooltip {
    position: fixed;
    z-index: 60;
    max-width: min(14rem, calc(100vw - 1rem));
    padding: 0.4rem 0.55rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: #0d0d0d;
    color: #f5f5f5;
    box-shadow: var(--shadow);
    pointer-events: none;
    font-size: var(--font-size-small);
    line-height: 1.3;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

html[data-theme="light"] .emoji-tooltip {
    background: #18181b;
    color: #fafafa;
    border-color: #3f3f46;
}

.emoji-tooltip[hidden] {
    display: none;
}

.users-sidebar {
    position: absolute;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100%;
    background: var(--panel);
    border-right: 1px solid var(--border);
    z-index: 30;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
}

.users-sidebar.is-open {
    transform: translateX(0);
}

@media (max-width: 899px) {
    html.sidebar-pref-open .users-sidebar {
        transform: translateX(0);
    }
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sidebar-header-padding-y) var(--sidebar-header-padding-x);
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    margin: 0;
    font-family: var(--font-ui);
    font-size: var(--font-size-ui);
}

.sidebar-close {
    display: none;
}

.users-list {
    list-style: none;
    margin: 0;
    padding: 0.5rem;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.sidebar-footer {
    flex-shrink: 0;
    padding: 0.65rem 1rem 0.75rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.sidebar-footer-brand,
.sidebar-footer-copy {
    margin: 0;
    font-size: 0.68rem;
    line-height: 1.45;
    color: var(--muted);
}

.sidebar-footer-copy {
    margin-top: 0.15rem;
    font-size: 0.62rem;
    opacity: 0.85;
}

.sidebar-footer a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid color-mix(in srgb, var(--muted) 45%, transparent);
    transition: color 0.15s ease, border-color 0.15s ease;
}

.sidebar-footer a:hover,
.sidebar-footer a:focus-visible {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.sidebar-footer a:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}

.user-item {
    display: flex;
    align-items: center;
    gap: var(--message-item-gap);
    padding: var(--sidebar-row-padding-y) var(--sidebar-row-padding-x);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.user-item:hover {
    background: var(--panel-2);
    border-color: var(--border);
}

.user-item-info {
    min-width: 0;
}

.user-item-name {
    margin: 0;
    font-family: var(--font-ui);
    font-size: var(--font-size-ui);
    font-weight: 600;
}

.user-item-meta {
    margin: 0.1rem 0 0;
    font-size: var(--font-size-small);
    color: var(--muted);
}

.sidebar-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 25;
}

.sidebar-backdrop[hidden] {
    display: none;
}

.image-lightbox {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3.5rem 1rem 1rem;
}

.image-lightbox[hidden] {
    display: none;
}

.image-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
}

.image-lightbox-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 2;
    color: #fff;
}

.image-lightbox-close:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.image-lightbox-close:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.image-lightbox-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: min(100%, 1200px);
    max-height: 100%;
    overflow: hidden;
    cursor: zoom-in;
}

.image-lightbox-content.is-zoomed {
    cursor: zoom-out;
}

.image-lightbox-img {
    display: block;
    max-width: 100%;
    max-height: calc(100vh - 4.5rem);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    transform-origin: center center;
    will-change: transform;
}

body.image-lightbox-open {
    overflow: hidden;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.modal-panel {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.modal-header h2 {
    margin: 0;
    font-family: var(--font-ui);
    font-size: calc(var(--font-size-ui) * 1.15);
}

.settings-form fieldset {
    border: none;
    margin: 0 0 1rem;
    padding: 0;
}

.settings-section {
    margin-bottom: 1.35rem;
    padding-bottom: 1.15rem;
    border-bottom: 1px solid var(--border);
}

.settings-section:last-of-type {
    border-bottom: none;
    margin-bottom: 0.75rem;
}

.settings-section-title {
    margin: 0 0 0.85rem;
    font-family: var(--font-ui);
    font-size: var(--font-size-ui);
    font-weight: 600;
}

.settings-avatar-preview-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.settings-avatar-preview {
    width: 4.5rem;
    height: 4.5rem;
    font-size: 1rem;
}

.avatar-type-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.avatar-type-option {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
    font-size: 0.88rem;
}

.avatar-preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(4.5rem, 1fr));
    gap: 0.65rem;
}

.avatar-preset-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
}

.avatar-preset-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.avatar-preset-option .avatar-preview {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 0.72rem;
}

.avatar-upload-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.settings-upload-preview {
    margin-top: 0.65rem;
}

.settings-upload-preview img {
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
}

.settings-form legend {
    display: block;
    margin-bottom: 0.5rem;
    font-size: var(--font-size-ui);
    font-weight: 500;
    color: var(--muted);
}

.theme-options,
.avatar-options,
.text-size-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.theme-option,
.avatar-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
}

.theme-option input,
.avatar-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.theme-option span,
.avatar-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 4.25rem;
    padding: 0.45rem 0.65rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: var(--font-size-ui);
}

.avatar-preset-option input:checked + .avatar-preview,
.avatar-preset-option input:focus-visible + .avatar-preview {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.theme-option input:checked + span {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--text);
}

.avatar-label {
    min-width: auto;
    padding: 0;
    border: none;
    font-size: 0.72rem;
    color: var(--muted);
}

.avatar-preset-option input:checked ~ .avatar-label {
    color: var(--text);
    font-weight: 600;
}

.avatar-preview {
    border-radius: 50%;
}

.modal-panel {
    max-height: min(90vh, 720px);
    overflow-y: auto;
}

.field-checkbox {
    margin-bottom: 0.75rem;
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: var(--font-size-ui);
}

.settings-status {
    min-height: 1.25rem;
    margin: 0 0 0.75rem;
    font-size: var(--font-size-ui);
    color: var(--danger);
}

.settings-status.is-success {
    color: var(--success);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.compact-mode .message-item {
    max-width: min(90%, 560px);
}

.compact-mode .message-item.message-item--has-embed {
    max-width: none;
    width: fit-content;
}

.compact-mode .app-header {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.compact-mode .app-logo {
    width: 2rem;
    height: 2rem;
}

/* Focus mode — hide chrome, expand chat */
body.focus-mode .app-header {
    display: none;
}

body.focus-mode .users-sidebar,
body.focus-mode .sidebar-backdrop {
    display: none !important;
}

body.focus-mode .chat-layout {
    flex: 1 1 auto;
    min-height: 0;
}

body.focus-mode .chat-shell {
    width: 100%;
    max-width: 100%;
}

.focus-exit-btn {
    position: fixed;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 40;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(20, 20, 20, 0.88);
    color: var(--muted);
    font-family: var(--font-ui);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.focus-exit-btn[hidden] {
    display: none;
}

.focus-exit-btn:hover:not(:disabled),
.focus-exit-btn:focus-visible {
    color: var(--text);
    border-color: var(--accent);
    background: var(--panel);
    outline: none;
}

.focus-exit-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.focus-exit-btn .icon-focus {
    width: var(--icon-size-header);
    height: var(--icon-size-header);
    color: var(--accent);
}

.focus-exit-label {
    white-space: nowrap;
}

html[data-theme="light"] .focus-exit-btn {
    background: rgba(255, 255, 255, 0.92);
}

#focus-toggle[aria-pressed="true"] {
    color: var(--accent);
    background: var(--accent-soft);
}

@media (min-width: 900px) {
    .users-sidebar {
        position: relative;
        transform: none;
        flex: 0 0 0;
        width: 0;
        min-width: 0;
        overflow: hidden;
        border-right: none;
        transition: flex-basis 0.2s ease, width 0.2s ease;
    }

    .users-sidebar.is-open,
    html.sidebar-pref-open .users-sidebar {
        flex: 0 0 var(--sidebar-width);
        width: var(--sidebar-width);
        border-right: 1px solid var(--border);
    }

    .sidebar-backdrop {
        display: none !important;
    }

    .sidebar-close {
        display: inline-flex;
    }
}

@media (max-width: 899px) {
    .users-sidebar.is-open + .sidebar-backdrop {
        display: block;
    }

    .app-tagline {
        display: none;
    }

    .header-user {
        display: none;
    }
}

@media (max-width: 640px) {
    html {
        --message-list-scrollbar-scale: 0.88;
    }

    html.compact-mode {
        --message-list-scrollbar-scale: 0.8;
    }

    .app-header {
        padding: 0.625rem 0.75rem;
    }

    .app-header-end .btn-secondary:not(.btn-sm) {
        padding: 0.45rem 0.65rem;
    }

    .message-item {
        max-width: 95%;
    }

    .attachment-preview {
        margin-left: 0;
    }

    .message-list-wrap:has(.last-updated-notice:not([hidden])) .message-list {
        padding-bottom: 0.5rem;
    }

    .message-list-footer {
        position: static;
        padding: 0.35rem 0 0;
        background: none;
        pointer-events: auto;
    }

    .last-updated-notice {
        opacity: 0.68;
    }

    .btn.btn-send {
        min-width: var(--send-btn-effective-min-width);
        padding-inline: var(--send-btn-effective-padding-x);
    }
}