:root {
    color-scheme: dark;
    --bg: #080b16;
    --surface: #11172a;
    --surface-strong: #19213a;
    --surface-soft: #0d1222;
    --text: #f6f7ff;
    --muted: #aab2cf;
    --line: rgba(255, 255, 255, 0.12);
    --primary: #7c5cff;
    --primary-strong: #9b83ff;
    --accent: #19d3ae;
    --warning: #ffd166;
    --danger: #ff6b81;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
    --radius: 20px;
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f4f6fb;
    --surface: #ffffff;
    --surface-strong: #e9edfa;
    --surface-soft: #f8f9fd;
    --text: #11152a;
    --muted: #5d647e;
    --line: rgba(17, 21, 42, 0.13);
    --primary: #5c3cf2;
    --primary-strong: #4325ca;
    --accent: #008f78;
    --warning: #9f6900;
    --danger: #c42d50;
    --shadow: 0 24px 60px rgba(45, 52, 82, 0.13);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    background:
        radial-gradient(circle at 15% 0%, rgba(124, 92, 255, 0.18), transparent 32rem),
        radial-gradient(circle at 90% 15%, rgba(25, 211, 174, 0.10), transparent 28rem),
        var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

a {
    color: inherit;
}

button,
input,
select {
    font: inherit;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem clamp(1rem, 4vw, 4rem);
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(16px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--text);
    font-size: 1.1rem;
    font-weight: 800;
    text-decoration: none;
}

.brand-mark {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 0.7rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
}

.header-actions,
.filter-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.page-shell {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: clamp(2rem, 5vw, 5rem) 0;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
    margin-bottom: 3.5rem;
}

.hero h1,
.detail-copy h1 {
    max-width: 16ch;
    margin: 0.35rem 0 1rem;
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 0.98;
    letter-spacing: -0.055em;
}

.hero p,
.detail-copy > p {
    max-width: 65ch;
    color: var(--muted);
    font-size: 1.08rem;
}

.eyebrow {
    display: block;
    color: var(--accent);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.architecture-cards {
    display: grid;
    gap: 0.8rem;
}

.architecture-cards article {
    display: grid;
    grid-template-columns: 2.7rem 1fr;
    gap: 0 0.8rem;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--surface), var(--surface-soft));
    box-shadow: var(--shadow);
}

.architecture-cards article span {
    grid-row: 1 / 3;
    display: grid;
    width: 2.7rem;
    height: 2.7rem;
    place-items: center;
    border-radius: 0.8rem;
    background: var(--surface-strong);
    color: var(--primary-strong);
    font-weight: 900;
}

.architecture-cards small {
    color: var(--muted);
}

.filter-section,
.trace-panel,
.detail-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    box-shadow: var(--shadow);
}

.filter-section,
.trace-panel {
    padding: clamp(1.2rem, 3vw, 2rem);
    margin-bottom: 2rem;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 1.25rem;
}

.section-heading h2 {
    margin: 0.2rem 0 0;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.result-count {
    color: var(--muted);
    white-space: nowrap;
}

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

.field {
    display: grid;
    gap: 0.4rem;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 700;
}

.field-wide {
    grid-column: span 2;
}

.field input,
.field select {
    width: 100%;
    min-height: 2.8rem;
    padding: 0.65rem 0.8rem;
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    outline: none;
    background: var(--surface-soft);
    color: var(--text);
}

.field input:focus,
.field select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent);
}

.check-field {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--muted);
}

.check-field input {
    width: 1.15rem;
    height: 1.15rem;
    accent-color: var(--primary);
}

.filter-actions {
    grid-column: span 2;
    justify-content: flex-end;
}

.button {
    display: inline-flex;
    min-height: 2.6rem;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1rem;
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    cursor: pointer;
    background: var(--surface-strong);
    color: var(--text);
    font-weight: 750;
    text-decoration: none;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    border-color: transparent;
    background: linear-gradient(135deg, var(--primary), #5f8bff);
    color: white;
}

.button-ghost {
    background: transparent;
}

.button-small {
    min-height: 2.2rem;
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.3rem;
}

.content-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
    transition: transform 160ms ease, border-color 160ms ease;
}

.content-card:hover {
    transform: translateY(-5px);
    border-color: color-mix(in srgb, var(--primary) 55%, var(--line));
}

.poster,
.detail-poster {
    position: relative;
    display: grid;
    place-items: center;
    overflow: hidden;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.4), transparent 25%),
        linear-gradient(145deg, var(--poster-color), #17172a 78%);
    color: white;
}

.poster {
    aspect-ratio: 16 / 10;
}

.poster::after,
.detail-poster::after {
    content: "";
    position: absolute;
    inset: auto -10% -40% 25%;
    aspect-ratio: 1;
    border: 1.7rem solid rgba(255, 255, 255, 0.09);
    border-radius: 50%;
}

.poster > strong,
.detail-poster > strong {
    font-size: clamp(4rem, 10vw, 7rem);
    line-height: 1;
    opacity: 0.85;
}

.poster-type,
.featured-badge {
    position: absolute;
    top: 0.8rem;
    z-index: 1;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.45);
    font-size: 0.72rem;
    font-weight: 800;
    backdrop-filter: blur(8px);
}

.poster-type {
    left: 0.8rem;
}

.featured-badge {
    right: 0.8rem;
    background: var(--warning);
    color: #2f2400;
}

.card-body {
    padding: 1.2rem;
}

.card-meta,
.card-footer,
.detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.7rem;
}

.card-meta {
    color: var(--muted);
    font-size: 0.8rem;
}

.card-body h2 {
    margin: 0.45rem 0 0.55rem;
    font-size: 1.35rem;
}

.card-body p {
    min-height: 4.8em;
    margin: 0 0 1rem;
    color: var(--muted);
}

.card-footer a,
.back-link {
    color: var(--primary-strong);
    font-weight: 800;
    text-decoration: none;
}

.rating {
    color: var(--warning);
    font-weight: 900;
}

.trace-list {
    display: grid;
    gap: 0.8rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.trace-list.is-collapsed {
    display: none;
}

.trace-step {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    gap: 0.8rem;
    padding: 1rem;
    border-left: 4px solid var(--primary);
    border-radius: 0.8rem;
    background: var(--surface-soft);
}

.trace-number {
    display: grid;
    width: 2.2rem;
    height: 2.2rem;
    place-items: center;
    border-radius: 50%;
    background: var(--surface-strong);
    font-weight: 900;
}

.trace-layer {
    display: block;
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.trace-step p {
    margin: 0.25rem 0 0;
    color: var(--muted);
}

.detail-card {
    display: grid;
    grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1.25fr);
    gap: 0;
    overflow: hidden;
    margin-top: 1.5rem;
}

.detail-poster {
    min-height: 32rem;
}

.detail-poster > span {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.45);
    font-size: 0.78rem;
    font-weight: 800;
}

.detail-copy {
    align-self: center;
    padding: clamp(1.5rem, 5vw, 4rem);
}

.detail-meta {
    justify-content: flex-start;
    margin-bottom: 1.5rem;
    color: var(--muted);
}

.featured-inline {
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--warning) 20%, transparent);
    color: var(--warning);
    font-weight: 800;
}

.learning-note,
.setup-steps {
    margin-top: 1.5rem;
    padding: 1rem;
    border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
    border-radius: 1rem;
    background: color-mix(in srgb, var(--accent) 8%, var(--surface-soft));
}

.learning-note p {
    margin: 0.35rem 0 0;
    color: var(--muted);
}

.empty-state {
    padding: clamp(2rem, 7vw, 5rem);
    border: 1px dashed var(--line);
    border-radius: var(--radius);
    text-align: center;
    background: var(--surface-soft);
}

.empty-state > span {
    color: var(--primary-strong);
    font-size: 3rem;
    font-weight: 950;
}

.empty-state h1,
.empty-state h2 {
    margin: 0.4rem 0;
}

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

.setup-steps {
    max-width: 42rem;
    margin-right: auto;
    margin-left: auto;
    text-align: left;
}

.site-footer {
    padding: 2rem 1rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    text-align: center;
}

code {
    padding: 0.12rem 0.35rem;
    border-radius: 0.35rem;
    background: var(--surface-strong);
    color: var(--accent);
}

@media (max-width: 900px) {
    .hero,
    .detail-card {
        grid-template-columns: 1fr;
    }

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

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

    .detail-poster {
        min-height: 24rem;
    }
}

@media (max-width: 620px) {
    .site-header,
    .section-heading {
        align-items: stretch;
        flex-direction: column;
    }

    .header-actions .button {
        flex: 1;
    }

    .catalog-grid,
    .filter-form {
        grid-template-columns: 1fr;
    }

    .field-wide,
    .filter-actions {
        grid-column: auto;
    }

    .filter-actions {
        justify-content: stretch;
    }

    .filter-actions > * {
        flex: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition: none !important;
    }
}