:root {
    --font-heading: 'Space Grotesk', 'Segoe UI', sans-serif;
    --font-body: 'Manrope', 'Segoe UI', sans-serif;
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 18px;
    --shadow-soft: 0 30px 70px rgba(15, 23, 42, 0.22);
    --border-soft: rgba(255, 255, 255, 0.24);
}

html[data-theme='light'] {
    --bg-1: #f5efe4;
    --bg-2: #dbeafe;
    --bg-3: #ecfeff;
    --text-1: #0f172a;
    --text-2: #475569;
    --panel: rgba(255, 255, 255, 0.62);
    --panel-strong: rgba(255, 255, 255, 0.78);
    --line: rgba(15, 23, 42, 0.08);
    --accent: #0f766e;
    --accent-2: #ea580c;
    --button-text: #f8fafc;
}

html[data-theme='dark'] {
    --bg-1: #020617;
    --bg-2: #111827;
    --bg-3: #0f3d3e;
    --text-1: #e2e8f0;
    --text-2: #94a3b8;
    --panel: rgba(10, 15, 29, 0.62);
    --panel-strong: rgba(15, 23, 42, 0.82);
    --line: rgba(148, 163, 184, 0.12);
    --accent: #14b8a6;
    --accent-2: #f97316;
    --button-text: #04111d;
}

html[data-theme='gradient'] {
    --bg-1: #0b1120;
    --bg-2: #173b5f;
    --bg-3: #7c2d12;
    --text-1: #f8fafc;
    --text-2: #cbd5e1;
    --panel: rgba(14, 26, 45, 0.56);
    --panel-strong: rgba(18, 32, 55, 0.76);
    --line: rgba(226, 232, 240, 0.12);
    --accent: #38bdf8;
    --accent-2: #fb7185;
    --button-text: #08111d;
}

html,
body {
    min-height: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--text-1);
    margin: 0;
    background:
        radial-gradient(circle at top left, color-mix(in srgb, var(--bg-2) 74%, transparent), transparent 42%),
        radial-gradient(circle at bottom right, color-mix(in srgb, var(--bg-3) 68%, transparent), transparent 38%),
        linear-gradient(135deg, var(--bg-1), var(--bg-2), var(--bg-3));
    overflow-x: hidden;
}

#ambient-canvas,
.app-backdrop {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.app-backdrop {
    backdrop-filter: blur(24px);
    opacity: 0.26;
}

.page-shell {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    padding: 24px;
}

.floating-alert {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10;
    min-width: 280px;
    border: 0;
    box-shadow: var(--shadow-soft);
}

.glass-card,
.glass-modal {
    background: linear-gradient(180deg, color-mix(in srgb, var(--panel-strong) 84%, transparent), color-mix(in srgb, var(--panel) 96%, transparent));
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(24px);
}

.glass-card {
    border-radius: var(--radius-xl);
}

.glass-modal {
    border-radius: var(--radius-xl);
    color: var(--text-1);
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.74rem;
    color: var(--text-2);
    font-weight: 800;
}

h1,
h2,
h3,
.h4 {
    font-family: var(--font-heading);
    letter-spacing: -0.04em;
}

p {
    color: var(--text-2);
}

.brand-inline {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-inline-lg {
    margin-bottom: 8px;
}

.brand-tagline {
    margin: 4px 0 0;
    font-size: 0.92rem;
    color: var(--text-2);
}

.brand-logo {
    width: 30px;
    height: 30px;
    display: block;
}

.brand-logo-lg {
    width: 54px;
    height: 54px;
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--button-text);
    border: 0;
    box-shadow: 0 14px 30px color-mix(in srgb, var(--accent) 24%, transparent);
}

.btn-accent:hover,
.btn-accent:focus {
    color: var(--button-text);
    filter: brightness(1.03);
}

.btn-outline-light,
.form-control,
.form-select,
.form-control-color {
    background-color: color-mix(in srgb, var(--panel-strong) 80%, transparent);
    border-color: var(--line);
    color: var(--text-1);
}

.form-control::placeholder {
    color: color-mix(in srgb, var(--text-2) 70%, transparent);
}

.form-control:focus,
.form-select:focus,
.btn:focus {
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--accent) 26%, transparent);
    border-color: color-mix(in srgb, var(--accent) 52%, transparent);
}

.auth-grid {
    min-height: calc(100vh - 48px);
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 460px);
    gap: 24px;
    align-items: stretch;
}

.auth-copy,
.auth-panel,
.workspace-rail,
.workspace-sidebar,
.workspace-conversation,
.workspace-profile,
.settings-hero,
.settings-grid > .glass-card {
    padding: 28px;
}

.auth-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 18px;
}

.auth-copy h1 {
    font-size: clamp(2.7rem, 6vw, 4.8rem);
    line-height: 0.95;
    margin: 0;
}

.feature-stack {
    display: grid;
    gap: 16px;
    margin-top: 8px;
}

.feature-stack > div {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--panel-strong) 72%, transparent);
}

.feature-stack strong,
.panel-header h2,
.panel-header-row h2,
.section-title-row h3,
.conversation-header h2 {
    color: var(--text-1);
}

.stack-form {
    display: grid;
    gap: 16px;
}

.form-label-block {
    display: grid;
    gap: 8px;
    font-weight: 700;
    color: var(--text-1);
}

.auth-switch {
    margin: 18px 0 0;
}

.auth-switch a,
a {
    color: var(--accent);
    text-decoration: none;
}

.workspace-grid {
    min-height: calc(100vh - 48px);
    display: grid;
    grid-template-columns: 220px 320px minmax(0, 1fr) 320px;
    gap: 18px;
}

.settings-shell {
    min-height: calc(100vh - 48px);
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 18px;
}

.settings-content {
    display: grid;
    gap: 18px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 26px;
}

.brand-badge {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    font-family: var(--font-heading);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--button-text);
    overflow: hidden;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.theme-picker {
    display: flex;
    gap: 10px;
    padding: 12px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--panel-strong) 72%, transparent);
    width: fit-content;
    margin-bottom: 18px;
}

.theme-dot {
    width: 16px;
    height: 16px;
    border-radius: 999px;
    border: 0;
    position: relative;
}

.theme-dot[data-theme-choice='light'] { background: linear-gradient(135deg, #f59e0b, #0ea5e9); }
.theme-dot[data-theme-choice='dark'] { background: linear-gradient(135deg, #0f172a, #14b8a6); }
.theme-dot[data-theme-choice='gradient'] { background: linear-gradient(135deg, #38bdf8, #fb7185); }

.theme-dot.active::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: inherit;
    border: 1px solid color-mix(in srgb, var(--text-1) 45%, transparent);
}

.nav-stack {
    display: grid;
    gap: 10px;
    margin-bottom: auto;
}

.nav-chip {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 14px 16px;
    border-radius: 18px;
    background: color-mix(in srgb, var(--panel-strong) 66%, transparent);
    color: var(--text-1);
    font-weight: 700;
}

.nav-chip.active {
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 80%, transparent), color-mix(in srgb, var(--accent-2) 68%, transparent));
    color: var(--button-text);
}

.panel-header-row,
.section-title-row,
.conversation-header,
.header-actions,
.inline-form,
.composer-row,
.split-grid,
.group-settings-grid {
    display: flex;
    gap: 12px;
}

.panel-header-row,
.section-title-row,
.conversation-header {
    justify-content: space-between;
    align-items: center;
}

.sidebar-section {
    margin-top: 22px;
}

.sidebar-section h3 {
    font-size: 1rem;
    margin: 0;
}

.badge-soft,
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--panel-strong) 80%, transparent);
    color: var(--text-1);
    font-size: 0.82rem;
    font-weight: 700;
}

.status-pill.status-active,
.presence-active { color: #16a34a; }
.status-pill.status-dnd,
.presence-dnd { color: #dc2626; }
.status-pill.status-offline,
.presence-offline { color: var(--text-2); }

.stack-list {
    display: grid;
    gap: 10px;
}

.compact-list .list-card {
    padding: 14px;
}

.list-card,
.message-item,
.profile-preview-card,
.muted-card {
    border-radius: 20px;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--panel-strong) 72%, transparent);
}

.list-card {
    padding: 16px;
    display: flex;
    gap: 14px;
    align-items: center;
    justify-content: space-between;
    transition: transform 180ms ease, background 180ms ease;
}

.list-card:hover,
.list-card.active {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--panel-strong) 84%, transparent);
}

.identity-cluster,
.message-meta,
.message-author {
    display: flex;
    gap: 12px;
    align-items: center;
}

.avatar,
.settings-avatar {
    width: 44px;
    height: 44px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    font-weight: 800;
    color: var(--button-text);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    overflow: hidden;
    flex-shrink: 0;
}

.settings-avatar {
    width: 92px;
    height: 92px;
    border-radius: 28px;
    border: 3px solid rgba(255, 255, 255, 0.38);
    position: absolute;
    left: 24px;
    bottom: -40px;
}

.avatar img,
.settings-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.conversation-stream {
    flex: 1;
    overflow-y: auto;
    display: grid;
    gap: 12px;
    padding-right: 8px;
}

.workspace-conversation {
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.conversation-subtitle,
.mini-copy,
.list-card p,
.message-body,
.profile-preview-card p,
.muted-card p {
    margin: 0;
}

.message-item {
    padding: 16px 18px;
}

.message-item.is-self {
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 20%, transparent), color-mix(in srgb, var(--panel-strong) 80%, transparent));
}

.message-text {
    color: var(--text-1);
    white-space: pre-wrap;
}

.message-time {
    font-size: 0.82rem;
    color: var(--text-2);
}

.composer-row {
    margin-top: 18px;
}

.composer-row .form-control {
    min-height: 58px;
    border-radius: 18px;
}

.empty-state {
    min-height: 320px;
    display: grid;
    place-items: center;
    text-align: center;
    gap: 10px;
}

.empty-icon {
    width: 74px;
    height: 74px;
    border-radius: 24px;
    display: grid;
    place-items: center;
    font-size: 1.9rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--button-text);
    margin: 0 auto;
}

.profile-preview-card,
.muted-card {
    padding: 18px;
}

.me-banner,
.selection-banner,
.settings-profile-banner {
    min-height: 112px;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    background-size: cover;
    background-position: center;
    position: relative;
}

.me-body,
.selection-body,
.settings-profile-copy {
    padding-top: 18px;
}

.settings-profile-banner {
    min-height: 180px;
    margin-bottom: 50px;
}

.settings-grid .glass-card {
    min-height: 100%;
}

.split-grid {
    align-items: end;
}

.split-grid > * {
    flex: 1;
}

.group-settings-grid {
    align-items: flex-start;
}

.group-settings-grid > * {
    flex: 1;
}

@media (max-width: 1280px) {
    .workspace-grid {
        grid-template-columns: 92px 300px minmax(0, 1fr);
    }

    .workspace-profile {
        grid-column: 2 / span 2;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .auth-grid,
    .settings-shell,
    .workspace-grid {
        grid-template-columns: 1fr;
    }

    .workspace-profile {
        grid-column: auto;
    }

    .workspace-rail,
    .workspace-sidebar,
    .workspace-conversation,
    .workspace-profile,
    .settings-hero,
    .settings-grid > .glass-card,
    .auth-copy,
    .auth-panel {
        padding: 22px;
    }

    .group-settings-grid,
    .split-grid,
    .inline-form,
    .composer-row,
    .panel-header-row,
    .conversation-header {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 576px) {
    .page-shell {
        padding: 14px;
    }

    .auth-copy h1 {
        font-size: 2.6rem;
    }

    .theme-picker {
        width: 100%;
        justify-content: center;
    }

    .settings-avatar {
        width: 74px;
        height: 74px;
        bottom: -32px;
    }
}

/* UI refresh: professional collaboration layout */
:root {
    --radius-2xl: 28px;
    --radius-xl: 22px;
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-pro-lg: 0 24px 60px rgba(3, 10, 25, 0.22);
    --shadow-pro-md: 0 12px 28px rgba(7, 12, 24, 0.18);
}

html[data-theme='light'] {
    --bg-root: #eef2f7;
    --bg-accent: #d7e3ff;
    --bg-accent-2: #dff4f1;
    --surface: rgba(255, 255, 255, 0.88);
    --surface-2: rgba(248, 250, 252, 0.94);
    --surface-3: rgba(240, 244, 249, 0.94);
    --surface-active: rgba(220, 234, 255, 0.96);
    --line: rgba(15, 23, 42, 0.08);
    --line-strong: rgba(15, 23, 42, 0.14);
    --text-1: #0f172a;
    --text-2: #475569;
    --text-3: #64748b;
    --accent: #2563eb;
    --accent-2: #0f766e;
    --accent-soft: rgba(37, 99, 235, 0.12);
    --success: #15803d;
    --danger: #dc2626;
    --button-text: #f8fafc;
}

html[data-theme='dark'] {
    --bg-root: #0b1220;
    --bg-accent: #13233f;
    --bg-accent-2: #102f33;
    --surface: rgba(17, 24, 39, 0.88);
    --surface-2: rgba(15, 23, 42, 0.94);
    --surface-3: rgba(24, 34, 54, 0.94);
    --surface-active: rgba(30, 51, 88, 0.96);
    --line: rgba(148, 163, 184, 0.10);
    --line-strong: rgba(148, 163, 184, 0.18);
    --text-1: #e5eefc;
    --text-2: #a8b6cc;
    --text-3: #7f8da7;
    --accent: #60a5fa;
    --accent-2: #14b8a6;
    --accent-soft: rgba(96, 165, 250, 0.14);
    --success: #22c55e;
    --danger: #f87171;
    --button-text: #04111d;
}

html[data-theme='gradient'] {
    --bg-root: #0c1322;
    --bg-accent: #16233a;
    --bg-accent-2: #1c3145;
    --surface: rgba(15, 23, 42, 0.84);
    --surface-2: rgba(17, 26, 46, 0.94);
    --surface-3: rgba(22, 34, 58, 0.94);
    --surface-active: rgba(33, 51, 88, 0.96);
    --line: rgba(191, 219, 254, 0.10);
    --line-strong: rgba(191, 219, 254, 0.16);
    --text-1: #edf4ff;
    --text-2: #b4c3d6;
    --text-3: #8393a8;
    --accent: #5ea8ff;
    --accent-2: #2dd4bf;
    --accent-soft: rgba(94, 168, 255, 0.14);
    --success: #22c55e;
    --danger: #fb7185;
    --button-text: #06101d;
}

body {
    background:
        radial-gradient(circle at top left, var(--bg-accent), transparent 36%),
        radial-gradient(circle at bottom right, var(--bg-accent-2), transparent 34%),
        linear-gradient(180deg, var(--bg-root), color-mix(in srgb, var(--bg-root) 84%, #07101d));
}

.page-shell {
    padding: 20px;
}

.glass-card,
.glass-modal {
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--surface-2) 98%, transparent));
    border: 1px solid var(--line);
    box-shadow: var(--shadow-pro-md);
    backdrop-filter: blur(18px);
}

.glass-card {
    border-radius: var(--radius-2xl);
}

.glass-modal {
    border-radius: var(--radius-xl);
}

p {
    color: var(--text-2);
}

.eyebrow {
    color: var(--text-3);
}

.brand-logo-xl {
    width: 60px;
    height: 60px;
}

.brand-badge {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface-3) 90%, transparent), color-mix(in srgb, var(--surface) 90%, transparent));
    border: 1px solid var(--line-strong);
    box-shadow: none;
}

.btn {
    border-radius: 12px;
    font-weight: 700;
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent-2) 70%, white 10%));
    box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 24%, transparent);
}

.btn-outline-light {
    color: var(--text-1);
    border-color: var(--line-strong);
    background: var(--surface-3);
}

.btn-outline-light:hover,
.btn-outline-light:focus {
    color: var(--text-1);
    border-color: var(--accent);
    background: var(--surface-active);
}

.form-control,
.form-select,
.form-control-color {
    border-radius: 12px;
    background: var(--surface-3);
    border-color: var(--line);
    color: var(--text-1);
}

.form-control::placeholder {
    color: var(--text-3);
}

.form-control:focus,
.form-select:focus,
.btn:focus {
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--accent) 18%, transparent);
    border-color: color-mix(in srgb, var(--accent) 56%, transparent);
}

.auth-grid-enterprise {
    grid-template-columns: minmax(0, 1.3fr) minmax(360px, 460px);
    gap: 20px;
}

.auth-overview-card,
.auth-form-card,
.rail-shell,
.nav-shell,
.chat-shell,
.detail-shell,
.settings-hero,
.settings-grid > .glass-card {
    padding: 28px;
}

.auth-overview-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), color-mix(in srgb, var(--surface-2) 98%, transparent)),
        radial-gradient(circle at top right, color-mix(in srgb, var(--accent) 18%, transparent), transparent 36%);
}

.auth-hero-copy {
    display: grid;
    gap: 14px;
    max-width: 760px;
}

.auth-hero-copy h1 {
    margin: 0;
    font-size: clamp(2.5rem, 5vw, 4.6rem);
    line-height: 0.98;
}

.auth-metric-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.auth-metric-card {
    display: grid;
    gap: 6px;
    padding: 18px;
    border-radius: var(--radius-lg);
    background: var(--surface-3);
    border: 1px solid var(--line);
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-1);
}

.metric-label {
    color: var(--text-2);
    font-size: 0.92rem;
}

.auth-form-card {
    max-width: 460px;
    width: 100%;
    justify-self: end;
}

.auth-note-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.auth-note-pill,
.badge-soft,
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--surface-3);
    border: 1px solid var(--line);
    color: var(--text-1);
    font-size: 0.82rem;
    font-weight: 700;
}

.workspace-grid {
    grid-template-columns: 250px 360px minmax(0, 1fr) 320px;
    gap: 16px;
}

.settings-shell {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 16px;
}

.rail-shell {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.rail-divider {
    height: 1px;
    background: var(--line);
}

.nav-stack {
    gap: 10px;
}

.nav-chip {
    padding: 14px 16px;
    border-radius: 14px;
    color: var(--text-2);
    background: transparent;
    border: 1px solid transparent;
}

.nav-chip:hover {
    color: var(--text-1);
    background: var(--surface-3);
    border-color: var(--line);
}

.nav-chip.active {
    background: var(--surface-active);
    color: var(--text-1);
    border-color: color-mix(in srgb, var(--accent) 26%, var(--line));
}

.theme-picker {
    padding: 10px 12px;
    width: fit-content;
    border-radius: 999px;
    background: var(--surface-3);
    border: 1px solid var(--line);
}

.rail-theme-picker {
    margin-top: auto;
}

.nav-shell,
.chat-shell,
.detail-shell {
    min-height: 0;
}

.nav-shell {
    display: flex;
    flex-direction: column;
}

.nav-shell-header {
    margin-bottom: 16px;
}

.sidebar-toolbar {
    margin-bottom: 14px;
}

.friend-entry-form .form-control {
    min-height: 46px;
}

.friend-entry-form .btn {
    min-width: 102px;
}

.sidebar-scroll-area,
.detail-shell,
.conversation-stream {
    overflow-y: auto;
}

.sidebar-section + .sidebar-section {
    margin-top: 20px;
}

.section-title-row {
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.section-title-row h3 {
    font-size: 0.95rem;
}

.list-card,
.profile-preview-card,
.muted-card,
.message-item {
    border-radius: 16px;
    border: 1px solid var(--line);
    background: var(--surface-3);
}

.list-card {
    width: 100%;
    padding: 14px 16px;
    gap: 12px;
    text-align: left;
}

button.list-card {
    border-color: var(--line);
}

.list-card:hover,
.list-card.active {
    background: var(--surface-active);
    border-color: color-mix(in srgb, var(--accent) 24%, var(--line));
}

.thread-primary {
    min-width: 0;
    flex: 1;
}

.thread-name-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
}

.thread-preview,
.thread-secondary,
.mini-copy,
.message-time,
.conversation-subtitle,
.profile-preview-card p,
.muted-card p {
    color: var(--text-3);
    margin: 0;
    font-size: 0.88rem;
}

.avatar,
.settings-avatar {
    border-radius: 14px;
}

.presence-active,
.status-pill.status-active { color: var(--success); }
.presence-dnd,
.status-pill.status-dnd { color: var(--danger); }
.presence-offline,
.status-pill.status-offline { color: var(--text-3); }

.chat-shell {
    display: flex;
    flex-direction: column;
}

.conversation-header {
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 16px;
}

.conversation-heading h2 {
    margin: 6px 0 4px;
}

.message-item {
    padding: 14px 16px;
}

.message-item.is-self {
    background: linear-gradient(180deg, color-mix(in srgb, var(--accent-soft) 100%, var(--surface-3)), var(--surface-3));
    border-color: color-mix(in srgb, var(--accent) 22%, var(--line));
}

.message-meta {
    align-items: flex-start;
}

.message-author {
    gap: 8px;
    margin-bottom: 4px;
}

.empty-state {
    min-height: 100%;
    padding: 40px 20px;
}

.empty-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--surface-active);
    color: var(--accent);
    font-size: 1.5rem;
}

.composer-input-shell {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 14px;
    min-height: 58px;
    border-radius: 16px;
    background: var(--surface-3);
    border: 1px solid var(--line);
}

.composer-input-shell .form-control {
    border: 0;
    background: transparent;
    box-shadow: none;
    padding-left: 0;
}

.composer-icon {
    color: var(--text-3);
}

.me-panel,
.profile-preview-card,
.muted-card {
    padding: 18px;
}

.me-banner,
.selection-banner,
.settings-profile-banner {
    border-radius: 18px;
}

.profile-action-grid,
.member-list {
    display: grid;
    gap: 10px;
}

.member-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface-2) 82%, var(--surface-3));
    border: 1px solid var(--line);
}

.settings-content {
    gap: 16px;
}

.settings-hero-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 420px);
    gap: 18px;
    align-items: stretch;
}

.settings-hero-copy {
    display: grid;
    gap: 10px;
}

.settings-hero-copy h2 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.settings-profile-banner {
    min-height: 200px;
}

@media (max-width: 1400px) {
    .workspace-grid {
        grid-template-columns: 220px 320px minmax(0, 1fr);
    }

    .detail-shell {
        grid-column: 2 / span 2;
    }
}

@media (max-width: 1100px) {
    .auth-grid-enterprise,
    .workspace-grid,
    .settings-shell,
    .settings-hero-shell,
    .settings-grid {
        grid-template-columns: 1fr;
    }

    .detail-shell {
        grid-column: auto;
    }

    .auth-form-card {
        justify-self: stretch;
        max-width: none;
    }
}

@media (max-width: 768px) {
    .page-shell {
        padding: 12px;
    }

    .auth-overview-card,
    .auth-form-card,
    .rail-shell,
    .nav-shell,
    .chat-shell,
    .detail-shell,
    .settings-hero,
    .settings-grid > .glass-card {
        padding: 18px;
    }

    .auth-metric-grid,
    .panel-header-row,
    .section-title-row,
    .conversation-header,
    .header-actions,
    .inline-form,
    .composer-row,
    .split-grid,
    .group-settings-grid {
        flex-direction: column;
        align-items: stretch;
    }

    .auth-metric-grid {
        grid-template-columns: 1fr;
    }

    .friend-entry-form .btn,
    .composer-row .btn {
        width: 100%;
    }
}