:root {
    --bg: #0d111b;
    --bg-soft: #121827;
    --surface: rgba(20, 27, 43, 0.86);
    --surface-solid: #151c2c;
    --surface-2: #1b2436;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.16);
    --text: #eef4ff;
    --muted: #93a2b8;
    --muted-2: #64748b;
    --primary: #7c5cff;
    --primary-2: #00d4ff;
    --accent: #14f195;
    --danger: #ff5c7a;
    --warning: #fbbf24;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.34);
    --radius-lg: 26px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --sidebar-w: 282px;
}

html[data-theme="light"] {
    --bg: #f4f7fb;
    --bg-soft: #edf2f9;
    --surface: rgba(255, 255, 255, 0.86);
    --surface-solid: #ffffff;
    --surface-2: #f8fafc;
    --border: rgba(15, 23, 42, 0.09);
    --border-strong: rgba(15, 23, 42, 0.16);
    --text: #0f172a;
    --muted: #596579;
    --muted-2: #7a879a;
    --shadow: 0 24px 60px rgba(15, 23, 42, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(124, 92, 255, 0.28), transparent 34%),
        radial-gradient(circle at top right, rgba(0, 212, 255, 0.18), transparent 32%),
        var(--bg);
}

a {
    color: inherit;
    text-decoration: none;
}

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

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 24px;
    border-right: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    backdrop-filter: blur(22px);
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 13px;
}

.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 17px;
    display: grid;
    place-items: center;
    color: white;
    font-weight: 900;
    letter-spacing: -0.08em;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    box-shadow: 0 16px 34px rgba(124, 92, 255, 0.28);
}

.brand strong {
    display: block;
    letter-spacing: -0.04em;
}

.brand small {
    display: block;
    color: var(--muted);
    margin-top: 2px;
}

.nav {
    display: grid;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 46px;
    padding: 0 14px;
    border-radius: 15px;
    color: var(--muted);
    transition: 160ms ease;
}

.nav-item span {
    width: 24px;
    color: var(--primary-2);
}

.nav-item:hover,
.nav-item.active {
    color: var(--text);
    background: rgba(124, 92, 255, 0.12);
    box-shadow: inset 0 0 0 1px rgba(124, 92, 255, 0.20);
}

.sidebar-card {
    margin-top: auto;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    gap: 12px;
}

.sidebar-card p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
}

.status-dot {
    width: 10px;
    height: 10px;
    margin-top: 5px;
    border-radius: 999px;
    background: var(--accent);
    box-shadow: 0 0 0 6px rgba(20, 241, 149, 0.10);
}

.main {
    min-width: 0;
    padding: 28px;
}

.topbar {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0 0 6px;
    text-transform: uppercase;
    color: var(--primary-2);
    letter-spacing: 0.16em;
    font-size: 11px;
    font-weight: 800;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 0;
    letter-spacing: -0.055em;
    font-size: clamp(28px, 4vw, 46px);
    line-height: 0.98;
}

h2 {
    letter-spacing: -0.045em;
}

.topbar-actions,
.inline-actions,
.hero-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.btn,
.icon-btn,
.mini-btn,
.round-btn {
    border: 0;
    cursor: pointer;
    color: var(--text);
    transition: 160ms ease;
}

.btn {
    min-height: 42px;
    padding: 0 17px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.btn.full {
    width: 100%;
}

.btn-primary {
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    box-shadow: 0 18px 40px rgba(124, 92, 255, 0.28);
}

.btn-soft {
    border: 1px solid var(--border);
    background: var(--surface);
}

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: var(--surface);
    border: 1px solid var(--border);
}

.btn:hover,
.icon-btn:hover,
.mini-btn:hover,
.round-btn:hover {
    transform: translateY(-1px);
    border-color: var(--border-strong);
}

.content {
    display: grid;
    gap: 24px;
}

.glass-panel,
.panel,
.quick-card,
.stat-card,
.toolbar-panel,
.folder-panel,
.library-main {
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
}

.hero-panel {
    min-height: 420px;
    padding: 34px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: 32px;
    overflow: hidden;
}

.pill {
    display: inline-flex;
    margin-bottom: 18px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(20, 241, 149, 0.11);
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
}

.hero-copy h2 {
    max-width: 720px;
    margin-bottom: 18px;
    font-size: clamp(34px, 5vw, 62px);
    line-height: 0.95;
}

.hero-copy p {
    max-width: 680px;
    color: var(--muted);
    line-height: 1.7;
}

.hero-visual {
    display: grid;
    place-items: center;
}

.mock-player {
    width: min(100%, 420px);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 28px;
    padding: 16px;
    transform: rotate(-2deg);
}

.mock-player-top {
    display: flex;
    gap: 7px;
    padding: 2px 4px 12px;
}

.mock-player-top span {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--border-strong);
}

.mock-scene {
    position: relative;
    height: 220px;
    border-radius: 22px;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(124, 92, 255, 0.34), rgba(0, 212, 255, 0.16)),
        linear-gradient(180deg, #151a2f, #090d17);
    display: grid;
    place-items: center;
    text-align: center;
}

html[data-theme="light"] .mock-scene {
    background:
        linear-gradient(135deg, rgba(124, 92, 255, 0.24), rgba(0, 212, 255, 0.18)),
        linear-gradient(180deg, #f9fbff, #dfe9f5);
}

.mock-scene strong,
.mock-scene small {
    position: relative;
    z-index: 1;
    display: block;
}

.mock-scene small {
    color: var(--muted);
    margin-top: -54px;
}

.scene-orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(4px);
}

.scene-orb.one {
    width: 140px;
    height: 140px;
    background: var(--primary);
    left: -22px;
    bottom: -36px;
    opacity: 0.5;
}

.scene-orb.two {
    width: 110px;
    height: 110px;
    background: var(--primary-2);
    right: 20px;
    top: 26px;
    opacity: 0.42;
}

.mock-timeline {
    display: flex;
    gap: 8px;
    padding-top: 14px;
}

.clip {
    display: block;
    height: 36px;
    border-radius: 11px;
}

.clip-video { width: 33%; background: linear-gradient(135deg, var(--primary), #a78bfa); }
.clip-image { width: 20%; background: linear-gradient(135deg, var(--primary-2), #67e8f9); }
.clip-audio { width: 28%; background: linear-gradient(135deg, var(--accent), #bbf7d0); }
.clip-text { width: 18%; background: linear-gradient(135deg, var(--warning), #fde68a); }

.quick-card {
    padding: 22px;
}

.quick-card h3 {
    margin-bottom: 18px;
}

.quick-card a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
    color: var(--muted);
    border-top: 1px solid var(--border);
}

.quick-card a:hover {
    color: var(--text);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.stat-card {
    padding: 20px;
}

.stat-card small,
.stat-card span {
    color: var(--muted);
}

.stat-card strong {
    display: block;
    margin: 8px 0;
    font-size: 38px;
    letter-spacing: -0.06em;
}

.panel-grid,
.export-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
}

.panel {
    padding: 24px;
}

.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.section-head h2,
.section-head h3 {
    margin-bottom: 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.steps div {
    padding: 16px;
    border-radius: 18px;
    background: var(--surface-2);
    border: 1px solid var(--border);
}

.steps span {
    color: var(--primary-2);
    font-weight: 900;
}

.steps strong {
    display: block;
    margin: 14px 0 8px;
}

.steps p,
.check-list,
.empty-state p {
    color: var(--muted);
    line-height: 1.55;
}

.check-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 14px;
}

.check-list li {
    display: flex;
    gap: 10px;
    align-items: center;
}

.check-list span {
    color: var(--accent);
    font-weight: 900;
}

.toolbar-panel {
    padding: 22px;
    display: grid;
    gap: 18px;
}

.search-group label,
.filter-grid label,
.property-stack label {
    display: grid;
    gap: 8px;
    color: var(--muted);
    font-weight: 700;
    font-size: 13px;
}

.search-box {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--surface-solid);
    color: var(--text);
    border-radius: 14px;
    outline: none;
}

input,
select {
    min-height: 44px;
    padding: 0 14px;
}

textarea {
    min-height: 92px;
    resize: vertical;
    padding: 12px 14px;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(124, 92, 255, 0.58);
    box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.12);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.suggestion-row {
    min-height: 34px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.suggestion-chip {
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--muted);
    border-radius: 999px;
    padding: 7px 10px;
    cursor: pointer;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.media-card {
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 20px;
}

.media-thumb {
    height: 165px;
    display: grid;
    place-items: center;
    color: var(--muted);
    background:
        linear-gradient(135deg, rgba(124, 92, 255, 0.32), rgba(0, 212, 255, 0.15)),
        var(--surface-2);
}

.media-meta,
.card-actions {
    padding: 13px;
}

.media-meta strong,
.media-meta small {
    display: block;
}

.media-meta small {
    color: var(--muted);
    margin-top: 5px;
}

.card-actions {
    padding-top: 0;
    display: flex;
    gap: 8px;
}

.mini-btn {
    min-height: 32px;
    padding: 0 11px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text);
    font-size: 12px;
    font-weight: 800;
}

.library-layout {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 22px;
}

.folder-panel,
.library-main {
    padding: 22px;
}

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

.folder-item {
    width: 100%;
    min-height: 54px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: transparent;
    color: var(--text);
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    text-align: left;
    padding: 0 13px;
    cursor: pointer;
}

.folder-item.active,
.folder-item:hover {
    background: rgba(124, 92, 255, 0.12);
}

.folder-item small {
    color: var(--muted);
}

.upload-dropzone {
    min-height: 210px;
    border: 1px dashed var(--border-strong);
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.12), rgba(0, 212, 255, 0.06));
    display: grid;
    place-items: center;
    text-align: center;
    padding: 28px;
    margin-bottom: 24px;
}

.upload-icon,
.empty-state span {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background: rgba(124, 92, 255, 0.14);
    color: var(--primary-2);
    font-size: 26px;
    font-weight: 900;
}

.empty-state {
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-lg);
    min-height: 260px;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 28px;
}

.empty-state.large {
    min-height: 520px;
}

.empty-state.compact {
    min-height: 260px;
    box-shadow: none;
}

.empty-state h3 {
    margin-bottom: 8px;
}

.quality-list {
    display: grid;
    gap: 12px;
}

.quality-list div {
    padding: 16px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    border-radius: 16px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.quality-list span {
    color: var(--muted);
}

.toast-root {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 50;
    display: grid;
    gap: 10px;
}

.toast {
    min-width: 280px;
    border: 1px solid var(--border);
    background: var(--surface-solid);
    color: var(--text);
    box-shadow: var(--shadow);
    border-radius: 16px;
    padding: 14px 16px;
}

@media (max-width: 1180px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        flex-direction: row;
        align-items: center;
        overflow-x: auto;
    }

    .nav {
        display: flex;
    }

    .sidebar-card {
        display: none;
    }

    .hero-grid,
    .hero-panel,
    .panel-grid,
    .export-grid,
    .library-layout {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 720px) {
    .main {
        padding: 18px;
    }

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

    .sidebar {
        padding: 16px;
    }

    .brand small {
        display: none;
    }

    .hero-panel {
        padding: 22px;
    }

    .stats-grid,
    .media-grid,
    .steps,
    .filter-grid,
    .search-box {
        grid-template-columns: 1fr;
    }
}

/* Milestone 2: live Pexels + library states */
.muted {
    color: var(--muted);
}

.pexels-filter-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.compact-select {
    min-height: 42px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-2);
    color: var(--text);
    padding: 0 12px;
    font-weight: 700;
}

.rich-thumb {
    position: relative;
    overflow: hidden;
}

.rich-thumb img,
.rich-thumb video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.asset-pill {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 2;
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(10, 12, 24, 0.68);
    color: #fff;
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    backdrop-filter: blur(12px);
}

.pexels-card,
.library-card {
    position: relative;
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.pexels-card:hover,
.library-card:hover {
    transform: translateY(-3px);
    border-color: rgba(124, 92, 255, 0.45);
    box-shadow: var(--shadow);
}

.pexels-card.selected {
    border-color: rgba(0, 212, 255, 0.92);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.12), var(--shadow);
}

.pexels-card.selected::after {
    content: "✓";
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-weight: 900;
}

.empty-card {
    min-height: 260px;
    border: 1px dashed var(--border);
    background: linear-gradient(145deg, rgba(124, 92, 255, 0.08), rgba(0, 212, 255, 0.05));
    border-radius: 22px;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 34px;
}

.empty-card span {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background: var(--surface-2);
    color: var(--primary);
    font-size: 28px;
    margin-bottom: 10px;
}

.empty-card h3 {
    margin: 0;
}

.empty-card p {
    max-width: 560px;
    margin: 8px auto 0;
    color: var(--muted);
}

.wide-empty-card {
    grid-column: 1 / -1;
}

.upload-dropzone.dragging {
    border-color: rgba(0, 212, 255, 0.85);
    background: rgba(0, 212, 255, 0.08);
}

.audio-preview {
    display: grid;
    place-items: center;
    gap: 6px;
    height: 100%;
    color: var(--muted);
}

.audio-preview span {
    font-size: 42px;
    color: var(--primary);
}

.danger-mini {
    color: #ff6b6b;
}

button:disabled {
    opacity: 0.62;
    cursor: not-allowed;
}

@media (max-width: 1160px) {
    .pexels-filter-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .pexels-filter-grid {
        grid-template-columns: 1fr;
    }
}

/* Milestone 3: project cards and timeline API UI */
.btn-danger {
    color: #fff;
    background: linear-gradient(135deg, #ef4444, #f97316);
    border: 0;
}

.project-actions-card {
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 24px;
    padding: 24px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 22px;
    margin-bottom: 18px;
}

.project-actions-card h2 {
    margin: 6px 0 8px;
    font-size: 24px;
}

.project-actions-card p:not(.eyebrow) {
    color: var(--muted);
    max-width: 720px;
    line-height: 1.6;
}

.inline-form {
    display: flex;
    gap: 10px;
    align-items: center;
    min-width: min(520px, 100%);
}

.inline-form input {
    min-width: 260px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.project-card {
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 22px;
    padding: 18px;
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
}

.project-icon {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: white;
    font-weight: 900;
}

.project-card h3 {
    margin-bottom: 6px;
}

.project-card p,
.project-card small {
    color: var(--muted);
}

@media (max-width: 900px) {
    .project-actions-card,
    .inline-form {
        flex-direction: column;
        align-items: stretch;
    }

    .inline-form input {
        min-width: 0;
        width: 100%;
    }
}

/* Milestone 4 render/export enhancements */
.render-note {
    margin-top: 18px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface-soft);
}

.render-note p {
    margin: 6px 0 0;
    color: var(--muted);
    line-height: 1.55;
}

.job-list {
    display: grid;
    gap: 14px;
}

.job-card {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface-soft);
}

.job-card strong {
    display: block;
    margin-bottom: 5px;
}

.job-card small,
.job-card em {
    display: block;
    color: var(--muted);
    font-style: normal;
}

.job-card p {
    margin: 8px 0;
    color: var(--muted);
    line-height: 1.45;
    word-break: break-word;
}

.job-card.failed {
    border-color: rgba(255, 91, 112, .45);
}

.job-actions {
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
    min-width: 220px;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 7px 10px;
    font-size: .76rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .05em;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--muted);
}

.status-pill.completed {
    color: #1fe39a;
    background: rgba(31, 227, 154, .12);
    border-color: rgba(31, 227, 154, .26);
}

.status-pill.failed {
    color: #ff7184;
    background: rgba(255, 113, 132, .12);
    border-color: rgba(255, 113, 132, .26);
}

.status-pill.processing {
    color: #31d5ff;
    background: rgba(49, 213, 255, .12);
    border-color: rgba(49, 213, 255, .26);
}

@media (max-width: 820px) {
    .job-card {
        flex-direction: column;
    }
    .job-actions {
        justify-content: flex-start;
        min-width: 0;
    }
}