:root {
    --bg: #07111f;
    --bg-soft: #0d1a2d;
    --panel: rgba(10, 22, 40, 0.84);
    --panel-strong: rgba(14, 28, 49, 0.94);
    --line: rgba(122, 197, 255, 0.18);
    --line-strong: rgba(122, 197, 255, 0.34);
    --text: #eff6ff;
    --muted: #9fb3ca;
    --muted-strong: #bed2e8;
    --primary: #4cc9f0;
    --primary-strong: #1da1f2;
    --secondary: #34d399;
    --accent: #f59e0b;
    --danger: #fb7185;
    --shadow: 0 24px 60px rgba(3, 8, 18, 0.45);
    --radius-lg: 18px;
    --radius-xl: 26px;
    --radius-pill: 999px;
    --font-body: 'IBM Plex Sans', system-ui, sans-serif;
    --font-display: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(76, 201, 240, 0.2), transparent 28%),
        radial-gradient(circle at top right, rgba(52, 211, 153, 0.14), transparent 24%),
        linear-gradient(180deg, #06101d 0%, #091425 35%, #09101d 100%);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(140, 170, 210, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(140, 170, 210, 0.05) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: linear-gradient(180deg, rgba(255, 255, 255, 0.38), transparent 78%);
}

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

button {
    cursor: pointer;
}

.loading-screen,
.login-page {
    position: fixed;
    inset: 0;
    z-index: 40;
}

.loading-screen {
    display: grid;
    place-items: center;
    background: rgba(4, 10, 18, 0.96);
    transition: opacity 0.4s ease;
}

.loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-core {
    text-align: center;
}

.loading-spinner {
    width: 72px;
    height: 72px;
    margin: 0 auto 18px;
    border-radius: 50%;
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-right-color: var(--secondary);
    animation: spin 0.9s linear infinite;
}

.loading-text,
.logo-text,
.brand-text,
.hero-panel h2,
.login-hero h1 {
    font-family: var(--font-display);
}

.loading-text {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.18em;
}

.loading-core p {
    color: var(--muted);
    margin-top: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.login-page {
    display: grid;
    place-items: center;
    padding: 32px;
    background:
        radial-gradient(circle at top left, rgba(76, 201, 240, 0.18), transparent 30%),
        radial-gradient(circle at bottom right, rgba(52, 211, 153, 0.16), transparent 28%),
        linear-gradient(160deg, rgba(7, 17, 31, 0.98), rgba(8, 16, 28, 0.96));
}

.login-shell {
    width: min(1180px, 100%);
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 28px;
    align-items: stretch;
}

.login-hero,
.login-panel,
.card,
.control-card,
.hero-panel,
.studio-card {
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(24px);
    box-shadow: var(--shadow);
}

.login-hero,
.login-panel {
    border-radius: var(--radius-xl);
    padding: 40px;
}

.login-hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 22px;
}

.eyebrow {
    display: inline-flex;
    width: fit-content;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    border-radius: var(--radius-pill);
    background: rgba(76, 201, 240, 0.12);
    border: 1px solid rgba(76, 201, 240, 0.2);
    color: #d6f3ff;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.login-hero h1,
.hero-panel h2 {
    margin: 0;
    font-size: clamp(2rem, 3vw, 3.4rem);
    line-height: 1.04;
}

.login-hero p,
.hero-panel p,
.viewer-subtitle,
.doc-section-meta,
.form-help,
.hint-text,
.user-role,
.metric-label,
.insight-label,
.login-footer,
.empty-state p {
    color: var(--muted);
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-pills span,
.login-footer span,
.editor-hints .badge,
.metric-tile,
.insight-tile,
.status-indicator,
.doc-section-kind {
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
}

.hero-pills span,
.login-footer span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
}

.login-panel {
    display: flex;
    flex-direction: column;
    gap: 26px;
    justify-content: center;
}

.logo-block {
    display: grid;
    gap: 8px;
}

.logo-text {
    margin: 0;
    font-size: 2.7rem;
    font-weight: 700;
}

.cursor {
    color: var(--secondary);
}

.tagline {
    margin: 0;
    color: var(--muted);
}

.login-form {
    display: grid;
    gap: 18px;
}

.form-group {
    display: grid;
    gap: 8px;
}

.form-group label,
.setting-item label,
.field-title,
.slider-label span:first-child {
    color: var(--muted-strong);
    font-weight: 600;
}

.form-group input,
.form-input,
.source-input,
select,
textarea {
    width: 100%;
    border: 1px solid rgba(109, 151, 194, 0.26);
    background: rgba(5, 14, 26, 0.92);
    color: var(--text);
    border-radius: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.form-group input,
.form-input,
select {
    min-height: 48px;
    padding: 0 14px;
}

textarea {
    resize: vertical;
    min-height: 260px;
    padding: 16px;
    line-height: 1.7;
}

.form-group input:focus,
.form-input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(76, 201, 240, 0.16);
}

.login-btn,
.btn {
    border-radius: 14px;
}

.login-btn {
    min-height: 52px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #03131d;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.main-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 32px;
    border-bottom: 1px solid var(--line);
    background: rgba(5, 14, 26, 0.9);
    backdrop-filter: blur(18px);
}

.nav-user,
.user-info,
.hero-metrics,
.viewer-header,
.file-actions,
.editor-hints,
.playback-meta,
.section-header,
.section-header-spread,
.slider-label,
.insight-note {
    display: flex;
    align-items: center;
}

.nav-user,
.file-actions,
.editor-hints,
.hero-metrics {
    gap: 12px;
}

.user-info {
    flex-direction: column;
    align-items: flex-end;
}

.user-greeting {
    color: var(--muted-strong);
}

.user-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #03131d;
}

.logout-btn,
.btn-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
}

.logout-btn:hover,
.btn-icon:hover,
.btn:hover {
    transform: translateY(-1px);
}

.workspace-shell {
    width: min(1500px, calc(100% - 48px));
    margin: 28px auto 40px;
    display: grid;
    gap: 24px;
}

.card,
.hero-panel,
.studio-card,
.control-card {
    border-radius: var(--radius-xl);
    padding: 24px;
}

.hero-panel {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 24px;
}

.hero-metrics {
    justify-content: flex-end;
    flex-wrap: wrap;
}

.metric-tile,
.insight-tile {
    min-width: 145px;
    padding: 16px 18px;
    display: grid;
    gap: 6px;
}

.metric-tile strong,
.insight-tile strong {
    font-size: 1.2rem;
}

.workspace-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(340px, 0.8fr);
    gap: 24px;
    align-items: start;
}

.studio-column,
.controls-column,
.control-stack,
.viewer-pane,
.editor-pane,
.insights-card {
    display: grid;
    gap: 18px;
}

.editor-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 20px;
}

.source-input {
    min-height: 500px;
}

.document-surface {
    min-height: 500px;
    border-radius: 20px;
    border: 1px solid rgba(130, 166, 209, 0.18);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent),
        rgba(2, 9, 18, 0.9);
    padding: 20px;
    overflow: auto;
}

.document-flow {
    display: grid;
    gap: 18px;
}

.doc-section {
    padding: 18px;
    border-radius: 20px;
    border: 1px solid rgba(113, 165, 212, 0.14);
    background: rgba(255, 255, 255, 0.03);
}

.doc-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 12px;
}

.doc-section-header h4 {
    margin: 0;
    font-size: 1rem;
}

.doc-section-kind {
    padding: 6px 10px;
    color: #d0ecff;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
}

.doc-section-body {
    color: #ebf4ff;
    line-height: 1.95;
    font-size: 1rem;
}

.doc-word {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 1px 2px;
    padding: 2px 5px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: inherit;
}

.doc-word:hover {
    background: rgba(76, 201, 240, 0.12);
}

.doc-word.active-word {
    background: linear-gradient(135deg, rgba(76, 201, 240, 0.92), rgba(52, 211, 153, 0.88));
    color: #04131d;
    box-shadow: 0 8px 20px rgba(52, 211, 153, 0.25);
}

.empty-state {
    min-height: 100%;
    display: grid;
    place-items: center;
    text-align: center;
    gap: 8px;
    padding: 50px 24px;
}

.empty-state i {
    font-size: 2rem;
    color: var(--primary);
}

.control-card .section-header {
    justify-content: space-between;
    margin-bottom: 4px;
}

.control-card h3,
.studio-card h3 {
    margin: 4px 0 0;
    font-size: 1.18rem;
}

.setting-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.toggle-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.toggle-row span {
    display: grid;
    gap: 3px;
}

.toggle-row small {
    color: var(--muted);
}

.toggle-row input[type='checkbox'] {
    width: 20px;
    height: 20px;
    accent-color: var(--secondary);
}

.slider-group {
    display: grid;
    gap: 8px;
}

.slider-label {
    justify-content: space-between;
}

.val-badge {
    color: #dff7ff;
    font-weight: 700;
}

input[type='range'] {
    width: 100%;
    accent-color: var(--primary);
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.playback-strip {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.playback-meta {
    justify-content: space-between;
    color: var(--muted-strong);
}

.progress-container {
    height: 10px;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.08);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transition: width 0.2s ease;
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.insight-note {
    gap: 10px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(76, 201, 240, 0.08);
    border: 1px solid rgba(76, 201, 240, 0.14);
    color: #d7efff;
}

.app-footer {
    padding: 0 24px 26px;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 16px;
}

.drag-active {
    border-color: var(--secondary) !important;
    box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12);
}

.focus-mode .controls-column {
    position: sticky;
    top: 92px;
}

.btn.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #04131d;
    font-weight: 700;
}

.btn.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text);
}

.btn.btn-danger {
    background: rgba(251, 113, 133, 0.1);
    color: #ffd6df;
    border: 1px solid rgba(251, 113, 133, 0.18);
}

@media (max-width: 1180px) {
    .login-shell,
    .hero-panel,
    .workspace-grid,
    .editor-grid {
        grid-template-columns: 1fr;
    }

    .hero-metrics {
        justify-content: flex-start;
    }
}

@media (max-width: 820px) {
    .navbar,
    .workspace-shell {
        width: min(100% - 24px, 100%);
        padding-left: 0;
        padding-right: 0;
    }

    .navbar {
        padding: 16px 18px;
    }

    .workspace-shell {
        margin-top: 18px;
    }

    .login-page {
        padding: 18px;
    }

    .login-hero,
    .login-panel,
    .card,
    .hero-panel,
    .studio-card,
    .control-card {
        padding: 20px;
    }

    .setting-grid,
    .button-grid,
    .insight-grid {
        grid-template-columns: 1fr;
    }

    .user-info {
        display: none;
    }

    .source-input,
    .document-surface {
        min-height: 380px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

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

.analysis-card {
    min-height: 220px;
}

.command-card {
    grid-column: 1 / -1;
}

.command-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 18px;
}

.command-chip {
    border: 1px solid rgba(76, 201, 240, 0.2);
    background: rgba(76, 201, 240, 0.08);
    color: var(--text);
    border-radius: 999px;
    padding: 10px 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.command-chip:hover {
    background: rgba(76, 201, 240, 0.16);
}

.ai-response,
.content-list,
.outline-panel {
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.03);
    padding: 16px;
}

.ai-response h4,
.response-block h4 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.content-list ul,
.response-block ul {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 10px;
}

.content-list li,
.response-block li {
    color: var(--muted-strong);
}

.topic-tag {
    display: inline-flex;
    margin: 0 8px 8px 0;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(52, 211, 153, 0.12);
    border: 1px solid rgba(52, 211, 153, 0.18);
    color: #d9fff1;
}

.outline-panel {
    display: grid;
    gap: 10px;
}

.outline-item {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(8, 15, 28, 0.86);
    color: var(--text);
    border-radius: 14px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    text-align: left;
}

.outline-item:hover {
    border-color: rgba(76, 201, 240, 0.28);
    background: rgba(76, 201, 240, 0.08);
}

.outline-label {
    font-weight: 600;
}

.outline-meta {
    color: var(--muted);
    font-size: 0.82rem;
}

.empty-copy {
    color: var(--muted);
}

.response-block {
    display: grid;
    gap: 8px;
}

@media (max-width: 1024px) {
    .analysis-grid {
        grid-template-columns: 1fr;
    }
}
:root {
    --bg: #eef5ff;
    --bg-soft: #dfeaff;
    --panel: rgba(255, 255, 255, 0.86);
    --panel-strong: rgba(245, 250, 255, 0.98);
    --line: rgba(37, 99, 235, 0.14);
    --line-strong: rgba(37, 99, 235, 0.28);
    --text: #10213a;
    --muted: #5d6f8f;
    --muted-strong: #294366;
    --primary: #2563eb;
    --primary-strong: #1d4ed8;
    --secondary: #0ea5e9;
    --accent: #f59e0b;
    --danger: #dc2626;
    --shadow: 0 22px 60px rgba(65, 93, 148, 0.14);
}

body {
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 26%),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #edf4ff 48%, #e3edff 100%);
}

body::before {
    background-image:
        linear-gradient(rgba(64, 122, 221, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(64, 122, 221, 0.05) 1px, transparent 1px);
}

.login-page {
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.2), transparent 28%),
        radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.18), transparent 26%),
        linear-gradient(145deg, #0f1f3c, #173564 55%, #1e4078 100%);
}

.login-hero,
.login-panel,
.card,
.control-card,
.hero-panel,
.studio-card {
    border-color: rgba(37, 99, 235, 0.14);
    background: var(--panel);
    backdrop-filter: blur(20px);
}

.login-hero,
.login-panel,
.navbar {
    color: #ecf4ff;
}

.login-panel .tagline,
.login-footer,
.login-hero p {
    color: rgba(232, 242, 255, 0.78);
}

.hero-pills span,
.login-footer span {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.12);
}

.navbar {
    border-bottom-color: rgba(37, 99, 235, 0.12);
    background: rgba(248, 251, 255, 0.78);
    color: var(--text);
    backdrop-filter: blur(22px);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.utility-btn,
.meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid rgba(37, 99, 235, 0.12);
    background: rgba(255, 255, 255, 0.88);
    color: var(--text);
}

.utility-btn:hover,
.workspace-tab:hover {
    border-color: rgba(37, 99, 235, 0.24);
    background: rgba(37, 99, 235, 0.08);
}

.workspace-toolbar {
    width: min(1500px, calc(100% - 48px));
    margin: 18px auto 0;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
}

.workspace-tabs,
.workspace-toolbar-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.workspace-tab {
    border: 1px solid rgba(37, 99, 235, 0.12);
    background: rgba(255, 255, 255, 0.92);
    color: var(--text);
    padding: 12px 16px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.workspace-tab.active {
    background: linear-gradient(135deg, #2563eb, #38bdf8);
    color: white;
    border-color: transparent;
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.2);
}

.workspace-shell-tabs {
    gap: 0;
}

.workspace-view {
    display: none;
    gap: 24px;
}

.workspace-view.active {
    display: grid;
}

.dashboard-grid-plus {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 18px;
}

.dashboard-card {
    grid-column: span 4;
}

.dashboard-card.command-card {
    grid-column: span 12;
}

.dashboard-card.compact-insights {
    grid-column: span 4;
}

.reader-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(340px, 0.8fr);
    gap: 24px;
    align-items: start;
}

.analysis-grid-wide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.document-surface,
.form-group input,
.form-input,
.source-input,
select,
textarea,
.ai-response,
.content-list,
.outline-panel,
.command-chip,
.toggle-row,
.utility-btn,
.workspace-tab,
.outline-item {
    background: rgba(255, 255, 255, 0.92);
}

.form-group input,
.form-input,
.source-input,
select,
textarea {
    color: var(--text);
    border-color: rgba(37, 99, 235, 0.14);
    background: rgba(255, 255, 255, 0.95);
}

.document-surface {
    border-color: rgba(37, 99, 235, 0.12);
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.03), transparent),
        rgba(255, 255, 255, 0.96);
}

.doc-section {
    border-color: rgba(37, 99, 235, 0.1);
    background: rgba(243, 248, 255, 0.95);
}

.doc-section-body,
.content-list li,
.response-block li,
.outline-item,
.notes-input {
    color: var(--text);
}

.doc-word.active-word {
    color: white;
    background: linear-gradient(135deg, #2563eb, #38bdf8);
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.22);
}

.insight-note {
    color: var(--text);
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.12);
}

.topic-tag {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.12);
    color: #1d4ed8;
}

.command-chip {
    border-color: rgba(37, 99, 235, 0.14);
    color: var(--text);
}

.command-chip:hover,
.outline-item:hover {
    background: rgba(37, 99, 235, 0.07);
}

.btn.btn-primary,
.login-btn {
    background: linear-gradient(135deg, #2563eb, #38bdf8);
    color: white;
}

.btn.btn-secondary {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(37, 99, 235, 0.12);
    color: var(--text);
}

.btn.btn-danger {
    background: rgba(220, 38, 38, 0.08);
    color: #b91c1c;
    border-color: rgba(220, 38, 38, 0.12);
}

.status-indicator {
    background: rgba(255, 255, 255, 0.96);
}

.panel-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.26);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 30;
}

.panel-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.side-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: min(460px, 100vw);
    height: 100vh;
    background: rgba(248, 251, 255, 0.98);
    border-left: 1px solid rgba(37, 99, 235, 0.1);
    box-shadow: -24px 0 60px rgba(37, 99, 235, 0.12);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 40;
    display: grid;
    grid-template-rows: auto 1fr;
}

.side-panel.open {
    transform: translateX(0);
}

.side-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 24px 24px 18px;
    border-bottom: 1px solid rgba(37, 99, 235, 0.08);
}

.side-panel-header h3 {
    margin: 6px 0 0;
}

.side-panel-body {
    padding: 22px 24px 28px;
    overflow-y: auto;
    display: grid;
    gap: 18px;
}

.panel-close {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid rgba(37, 99, 235, 0.12);
    background: white;
    color: var(--text);
}

.manual-content {
    gap: 16px;
}

.manual-block {
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid rgba(37, 99, 235, 0.1);
    background: rgba(255, 255, 255, 0.92);
}

.manual-block h4 {
    margin: 0 0 8px;
}

.manual-block p {
    margin: 0;
    color: var(--muted);
}

.notes-input {
    min-height: 320px;
    border: 1px solid rgba(37, 99, 235, 0.14);
    border-radius: 18px;
    background: white;
}

.notes-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.notes-status {
    color: var(--muted);
    font-size: 0.9rem;
}

body.panel-open {
    overflow: hidden;
}

@media (max-width: 1180px) {
    .workspace-toolbar,
    .reader-layout,
    .dashboard-grid-plus,
    .analysis-grid-wide {
        grid-template-columns: 1fr;
    }

    .dashboard-card,
    .dashboard-card.command-card,
    .dashboard-card.compact-insights {
        grid-column: span 1;
    }

    .workspace-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 820px) {
    .workspace-toolbar,
    .workspace-shell {
        width: min(100% - 24px, 100%);
    }

    .nav-actions {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .utility-btn {
        padding: 9px 12px;
    }

    .notes-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

/* LEXIO UI refresh: cleaner blue-white product palette, assistant panel, avatar upload, and mobile polish */
:root {
    --panel: rgba(255, 255, 255, 0.96);
    --panel-strong: rgba(247, 250, 255, 0.98);
    --line: rgba(37, 99, 235, 0.12);
    --line-strong: rgba(37, 99, 235, 0.24);
    --text: #102544;
    --muted: #5f7291;
    --primary: #2563eb;
    --secondary: #38bdf8;
    --shadow: 0 26px 60px rgba(37, 99, 235, 0.12);
}

body {
    background:
        radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 28%),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.16), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
    color: var(--text);
}

.login-page,
.main-app {
    background: transparent;
}

.login-shell {
    gap: 28px;
}

.login-hero {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.16), transparent 30%),
        linear-gradient(145deg, #102d63 0%, #1d4ed8 58%, #38bdf8 100%);
    border-color: rgba(255, 255, 255, 0.12);
    color: #f8fbff;
}

.login-hero p,
.login-hero .eyebrow,
.login-hero .hero-pills span {
    color: rgba(240, 247, 255, 0.88);
}

.login-hero .hero-pills span {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.16);
}

.login-panel,
.navbar,
.card,
.control-card,
.hero-panel,
.studio-card,
.analysis-card,
.manual-block,
.side-panel,
.document-surface,
.notes-input,
.form-input,
.source-input,
.utility-btn,
.command-chip,
.toggle-row,
.workspace-tab,
.outline-item,
.metric-tile,
.insight-tile,
.ai-response,
.content-list,
.outline-panel {
    background: rgba(255, 255, 255, 0.94);
    border-color: rgba(37, 99, 235, 0.12);
    color: var(--text);
    box-shadow: 0 18px 40px rgba(37, 99, 235, 0.08);
}

.login-panel,
.navbar {
    color: var(--text);
}

.login-panel .tagline,
.login-footer,
.login-footer span,
.user-role,
.user-greeting,
.viewer-subtitle,
.empty-copy,
.doc-section-meta,
.form-help,
.notes-status,
.outline-meta,
.metric-label,
.insight-label,
#qualityHint {
    color: var(--muted);
}

.navbar {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 248, 255, 0.9));
    border-bottom: 1px solid rgba(37, 99, 235, 0.12);
    box-shadow: 0 16px 40px rgba(37, 99, 235, 0.08);
}

.workspace-toolbar,
.workspace-shell {
    background: transparent;
}

.brand-text,
.hero-panel h2,
.card h3,
.card h4,
.login-panel label,
.logo-text,
.field-title,
.playback-meta,
.section-header h3,
.nav-user strong {
    color: #12294b;
}

.eyebrow,
.doc-section-kind,
.badge-premium,
.status-indicator {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.16);
    color: #3566b5;
}

.workspace-tab.active,
.login-btn,
.btn.btn-primary,
.utility-btn-primary {
    background: linear-gradient(135deg, #2563eb, #0ea5e9);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.22);
}

.utility-btn,
.workspace-tab,
.command-chip,
.btn.btn-secondary,
.btn-icon,
.panel-close,
.secondary-action {
    background: rgba(255, 255, 255, 0.94);
    color: var(--text);
    border: 1px solid rgba(37, 99, 235, 0.12);
}

.utility-btn:hover,
.workspace-tab:hover,
.command-chip:hover,
.secondary-action:hover,
.btn-icon:hover,
.panel-close:hover {
    border-color: rgba(37, 99, 235, 0.24);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.12);
    transform: translateY(-1px);
}

.hero-panel {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(240, 247, 255, 0.92)),
        linear-gradient(135deg, rgba(37, 99, 235, 0.03), transparent);
}

.dashboard-card,
.analysis-card,
.control-card,
.studio-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 255, 0.94));
}

.metric-tile,
.insight-tile,
.ai-response,
.content-list,
.outline-panel,
.toggle-row,
.notes-input,
.assistant-message,
.assistant-input,
.avatar-upload-row {
    background: rgba(248, 251, 255, 0.96);
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.document-surface {
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.03), rgba(255, 255, 255, 0.98) 28%),
        #ffffff;
}

.doc-section {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 248, 255, 0.96));
    border: 1px solid rgba(37, 99, 235, 0.08);
    box-shadow: 0 16px 34px rgba(37, 99, 235, 0.08);
}

.doc-word.active-word {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(56, 189, 248, 0.22));
    color: #153c73;
    box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.14);
}

.avatar-upload-row {
    display: grid;
    grid-template-columns: 82px 1fr;
    gap: 16px;
    padding: 16px;
    border-radius: 20px;
}

.login-avatar-preview,
.user-avatar {
    width: 72px;
    height: 72px;
    border-radius: 22px;
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #ffffff;
    overflow: hidden;
    box-shadow: 0 16px 34px rgba(37, 99, 235, 0.16);
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 16px;
}

.user-avatar.has-photo span {
    opacity: 0;
}

.avatar-upload-copy {
    display: grid;
    gap: 8px;
}

.avatar-upload-copy label {
    font-weight: 600;
}

.avatar-upload-copy p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.secondary-action {
    min-height: 44px;
    border-radius: 14px;
    padding: 0 14px;
    justify-self: start;
}

.assistant-panel {
    width: min(480px, 100vw);
}

.assistant-body {
    grid-template-rows: 1fr auto;
}

.assistant-messages {
    display: grid;
    gap: 14px;
    align-content: start;
    overflow-y: auto;
    min-height: 0;
    padding-right: 4px;
}

.assistant-message {
    display: grid;
    gap: 10px;
    padding: 16px 18px;
    border-radius: 20px;
}

.assistant-message strong {
    color: #13315c;
}

.assistant-message p,
.assistant-message ul {
    margin: 0;
    color: var(--muted);
}

.assistant-message ul {
    padding-left: 18px;
}

.assistant-message-user {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(56, 189, 248, 0.12));
}

.assistant-message-bot {
    background: rgba(248, 251, 255, 0.98);
}

.assistant-input-wrap {
    display: grid;
    gap: 12px;
}

.assistant-input {
    min-height: 110px;
    border-radius: 18px;
    padding: 14px 16px;
    resize: vertical;
}

.assistant-actions {
    display: flex;
    justify-content: flex-end;
}

.status-indicator {
    background: rgba(255, 255, 255, 0.98);
    color: #1d4ed8;
    border-color: rgba(37, 99, 235, 0.14);
}

.nav-actions,
.workspace-toolbar-meta,
.workspace-tabs {
    row-gap: 12px;
}

@media (max-width: 1180px) {
    .navbar {
        align-items: flex-start;
        gap: 18px;
    }

    .nav-actions {
        width: 100%;
        justify-content: space-between;
    }

    .hero-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 820px) {
    .login-shell,
    .reader-layout,
    .editor-grid,
    .analysis-grid-wide,
    .dashboard-grid-plus {
        grid-template-columns: 1fr;
    }

    .navbar,
    .workspace-toolbar {
        width: min(100% - 20px, 100%);
        padding-left: 18px;
        padding-right: 18px;
    }

    .nav-actions,
    .workspace-toolbar-meta,
    .workspace-tabs {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .nav-user {
        margin-left: 0;
        width: 100%;
        justify-content: space-between;
    }

    .avatar-upload-row {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .assistant-panel,
    .side-panel {
        width: 100vw;
    }
}

@media (max-width: 640px) {
    .login-page {
        padding: 16px;
    }

    .login-hero,
    .login-panel,
    .card,
    .control-card,
    .hero-panel,
    .studio-card,
    .analysis-card {
        padding: 18px;
        border-radius: 20px;
    }

    .workspace-tab,
    .utility-btn,
    .meta-chip,
    .command-chip,
    .btn {
        width: 100%;
        justify-content: center;
    }

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

    .assistant-input {
        min-height: 96px;
    }
}

/* LEXIO polish: scroll-safe login, floating alerts, and stronger blur treatment */
.login-page {
    display: block;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 24px 18px 36px;
}

.login-page::before {
    content: '';
    position: fixed;
    inset: -12% -8%;
    background:
        radial-gradient(circle at 15% 18%, rgba(37, 99, 235, 0.18), transparent 26%),
        radial-gradient(circle at 82% 14%, rgba(56, 189, 248, 0.18), transparent 24%),
        radial-gradient(circle at 50% 84%, rgba(59, 130, 246, 0.14), transparent 30%);
    filter: blur(42px);
    pointer-events: none;
}

.login-shell {
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 48px);
    margin: 0 auto;
    align-items: center;
}

.login-panel,
.navbar,
.card,
.control-card,
.hero-panel,
.studio-card,
.analysis-card,
.side-panel {
    backdrop-filter: blur(26px) saturate(135%);
}

.status-floating {
    position: fixed;
    top: 18px;
    right: 18px;
    z-index: 120;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.22s ease, transform 0.22s ease;
    max-width: min(420px, calc(100vw - 24px));
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.18);
}

.status-floating.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 820px) {
    .login-shell {
        min-height: auto;
    }
}

@media (max-width: 640px) {
    .login-page {
        padding: 14px 12px 28px;
    }

    .status-floating {
        top: 12px;
        right: 12px;
        left: 12px;
        max-width: none;
    }
}

/* LEXIO branding refresh */
.brand-lockup {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-logo {
    display: block;
    flex: 0 0 auto;
    object-fit: contain;
}

.brand-logo-login {
    width: 68px;
    height: 68px;
    padding: 6px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 18px 34px rgba(37, 99, 235, 0.18);
}

.brand-logo-nav {
    width: 54px;
    height: 54px;
    padding: 4px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.12);
}

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

.loading-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.loading-logo {
    width: 66px;
    height: 66px;
    padding: 6px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 18px 34px rgba(37, 99, 235, 0.16);
}

@media (max-width: 640px) {
    .brand-lockup {
        align-items: flex-start;
    }

    .brand-logo-login {
        width: 58px;
        height: 58px;
    }

    .brand-logo-nav {
        width: 46px;
        height: 46px;
    }
}