/* ─── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:          #F4EFEA;
    --bg-warm:     #EDE8E1;
    --bg-hover:    #E5DDD4;
    --bg-accent:   #97D4FF;
    --bg-active:   #6FC2FF;
    --text:        #383838;
    --text-dim:    #777;
    --text-muted:  #AAA;
    --border:      #D0CAC3;
    --border-mid:  #B8B2AB;
    --font-mono:   'Space Mono', 'Courier New', monospace;
    --font-body:   'Inter', Arial, sans-serif;
    --radius:      2px;
    --ease:        0.2s ease;
    --max-w:       1280px;
    --pad-x:       2.5rem;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 300;
    line-height: 1.65;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a  { color: inherit; text-decoration: none; }
button { font-family: var(--font-body); cursor: pointer; }
img { display: block; max-width: 100%; }

/* ─── Nav ────────────────────────────────────────── */
.nav {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    height: 60px;
    padding: 0 var(--pad-x);
    display: flex;
    align-items: center;
    background: var(--bg);
    border-bottom: 2px solid transparent;
    transition: border-color var(--ease);
}

.nav.scrolled { border-color: var(--text); border-bottom-width: 2px; }

.nav-inner {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.nav-links { display: flex; gap: 2rem; }

.nav-links a {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
    transition: color var(--ease), border-color var(--ease);
}

.nav-links a:hover {
    color: var(--text);
    border-color: var(--text);
}

/* ─── Hero ───────────────────────────────────────── */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 6rem var(--pad-x) 4rem;
    border-bottom: 2px solid var(--text);
    max-width: 100%;
    position: relative;
    overflow: hidden;
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    max-width: var(--max-w);
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.hero-title {
    font-family: var(--font-mono);
    font-size: clamp(5rem, 18vw, 15rem);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    line-height: 0.88;
    margin-bottom: 3rem;
    max-width: var(--max-w);
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.hero-meta {
    display: flex;
    gap: 0;
    max-width: var(--max-w);
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    flex-wrap: wrap;
}

.hero-meta span {
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    border: 1px solid var(--border-mid);
    padding: 0.3125rem 0.875rem;
    margin-right: -1px;
    margin-bottom: -1px;
    border-radius: var(--radius);
}

/* ─── Container ──────────────────────────────────── */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--pad-x);
}

/* ─── Section Label ──────────────────────────────── */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 400;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 2.5rem;
}

/* ─── Works ──────────────────────────────────────── */
.works { padding: 5rem 0 6rem; }

.filter {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.filter-btn {
    background: var(--bg);
    border: 1.5px solid var(--text);
    border-radius: var(--radius);
    color: var(--text-dim);
    padding: 0.5625rem 1.25rem;
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: transform 0.12s ease, box-shadow 0.12s ease, color 0.12s ease;
}

.filter-btn:hover {
    color: var(--text);
    transform: translate(-2px, -2px);
    box-shadow: 3px 3px 0 var(--text);
}

.filter-btn.active {
    background: var(--bg-accent);
    color: var(--text);
    transform: translate(-2px, -2px);
    box-shadow: 3px 3px 0 var(--text);
}

/* ─── Works Grid ─────────────────────────────────── */
.works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    border-left: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.works-empty {
    color: var(--text-muted);
    font-size: 0.875rem;
    padding: 5rem 0;
    text-align: center;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.works-empty.hidden { display: none; }

/* ─── Work Card ──────────────────────────────────── */
.work-card {
    cursor: pointer;
    display: block;
    background: var(--bg);
    transition: background var(--ease);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.work-card.hidden { display: none; }

.work-card:hover { background: var(--bg-warm); }

.work-card-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--bg-warm);
}

.work-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease, opacity 0.3s;
    opacity: 0.92;
}

.work-card-thumb .placeholder {
    width: 100%;
    height: 100%;
    background: var(--bg-warm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.work-card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(244, 239, 234, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--ease);
}

.play-btn {
    width: 52px;
    height: 52px;
    border: 1.5px solid var(--text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(244, 239, 234, 0.9);
    transition: transform 0.2s, background var(--ease);
}

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 14px solid var(--text);
    margin-left: 4px;
}

.work-card:hover .work-card-thumb img { transform: scale(1.03); opacity: 1; }
.work-card:hover .work-card-overlay   { opacity: 1; }
.work-card:hover .play-btn            { transform: scale(1.06); background: var(--bg-accent); }

.work-card-info {
    padding: 1rem 1.125rem 1.125rem;
    border-top: 2px solid var(--text);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
}

.work-card-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.work-card-category {
    font-size: 0.6875rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
}

/* ─── About ──────────────────────────────────────── */
.about {
    padding: 6rem 0;
    border-top: 2px solid var(--text);
}

.about-inner { max-width: 640px; }

.about-text {
    font-size: 1.125rem;
    font-weight: 300;
    line-height: 1.85;
    color: var(--text-dim);
}

/* ─── Contact ────────────────────────────────────── */
.contact {
    padding: 6rem 0;
    border-top: 2px solid var(--text);
}

.contact-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-dim);
    padding: 0.6875rem 1.375rem;
    border: 1.5px solid var(--text);
    border-radius: var(--radius);
    background: var(--bg);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: transform 0.12s ease, box-shadow 0.12s ease, color 0.12s ease;
}

.contact-link:hover {
    color: var(--text);
    transform: translate(-2px, -2px);
    box-shadow: 3px 3px 0 var(--text);
}

.contact-link.wechat-link { cursor: pointer; }

/* ─── Footer ─────────────────────────────────────── */
.footer {
    padding: 2rem var(--pad-x);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    border-top: 2px solid var(--text);
}

/* ─── Modal ──────────────────────────────────────── */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.modal.open { opacity: 1; pointer-events: all; }

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(56, 56, 56, 0.75);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 1000px;
    z-index: 1;
    background: var(--bg);
    border: 1px solid var(--text);
    border-radius: var(--radius);
    overflow: hidden;
    transform: translateY(16px);
    transition: transform 0.3s ease;
}

.modal.open .modal-content { transform: translateY(0); }

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
    background: var(--bg);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius);
    color: var(--text-dim);
    font-size: 0.75rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--ease), color var(--ease);
}

.modal-close:hover {
    background: var(--bg-warm);
    color: var(--text);
}

.modal-video {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: #1a1a1a;
}

.modal-video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.modal-info {
    padding: 1.125rem 1.375rem;
    display: flex;
    align-items: baseline;
    gap: 1rem;
    border-top: 2px solid var(--text);
}

.modal-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.modal-category {
    font-size: 0.6875rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.modal-desc {
    margin-left: auto;
    font-size: 0.8125rem;
    color: var(--text-dim);
    font-weight: 300;
}

/* ─── Toast ──────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(0.75rem);
    background: var(--text);
    color: var(--bg);
    padding: 0.5625rem 1.375rem;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    white-space: nowrap;
    z-index: 300;
}

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

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 960px) {
    .works-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
    :root { --pad-x: 1.25rem; }

    .nav-links { gap: 1.25rem; }

    .hero-title { letter-spacing: -0.02em; }

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

    .filter { width: 100%; }
    .filter-btn { flex: 1; }

    .contact-links { width: 100%; }
    .contact-link { flex: 1; justify-content: center; }

    .modal { padding: 0.75rem; }
    .modal-info { flex-direction: column; gap: 0.25rem; }
    .modal-desc { margin-left: 0; }
}