/* Drama Pop - Premium Short Drama Platform */
:root {
    --bg-base: #292929;
    --bg-dark: #1e1e1e;
    --bg-mid: #252525;
    --bg-light: #2d2d2d;
    --bg-lighter: #353535;
    --accent-blue: #5b9bd5;
    --accent-blue-dim: rgba(91, 155, 213, 0.25);
    --accent-red: #e74c3c;
    --accent-red-dim: rgba(231, 76, 60, 0.25);
    --text: #f0f0f0;
    --text-muted: #b0b0b0;
    --white: #ffffff;
    --font-sans: 'Outfit', -apple-system, sans-serif;
    --font-display: 'Playfair Display', serif;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: linear-gradient(180deg, var(--bg-base) 0%, transparent 100%);
    padding: 1rem 1.5rem;
    transition: background var(--transition);
}

.header.scrolled {
    background: var(--bg-mid);
}

.nav {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.95rem;
    opacity: 0.9;
    transition: opacity var(--transition);
}

.nav-menu a:hover {
    opacity: 1;
}

.nav-cta {
    color: var(--accent-blue) !important;
    font-weight: 600;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 1.5rem 4rem;
    background: linear-gradient(135deg, var(--bg-base) 0%, var(--bg-mid) 50%, var(--bg-dark) 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 70% 50%, var(--accent-blue-dim) 0%, transparent 50%),
                radial-gradient(ellipse 60% 40% at 20% 80%, var(--accent-red-dim) 0%, transparent 45%);
    pointer-events: none;
}

.hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-left {
    max-width: 520px;
}

.hero-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent-blue);
    margin-bottom: 0.75rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--text) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius);
    transition: transform var(--transition), box-shadow var(--transition);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #4a8bc2 100%);
    color: var(--white);
    border: none;
    box-shadow: 0 4px 20px var(--accent-blue-dim);
}

.btn-primary:hover {
    box-shadow: 0 6px 28px var(--accent-blue-dim);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--bg-lighter);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: visible;
}

.hero-banner {
    max-width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--bg-lighter);
    transform: rotate(5deg);
}

.hero-banner img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 65vh;
    object-fit: cover;
}

.hero-diagonal {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--bg-mid);
    clip-path: polygon(0 80px, 100% 0, 100% 100%, 0 100%);
}

/* About */
.about {
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-base) 100%);
}

.section-head {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text);
}

.section-head.light {
    color: var(--text);
}

.about-intro {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3rem;
}

.about-lead {
    font-size: 1.2rem;
    color: var(--accent-blue);
    font-weight: 600;
    margin-bottom: 1rem;
}

.about-full p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Bento grid */
.bento {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: 1rem;
    margin-top: 2rem;
}

.bento-item {
    background: linear-gradient(145deg, var(--bg-light) 0%, var(--bg-mid) 100%);
    border: 1px solid var(--bg-lighter);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: transform var(--transition), border-color var(--transition);
}

.bento-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-blue);
}

.bento-item i {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
    display: block;
}

.accent-blue { color: var(--accent-blue); }
.accent-red { color: var(--accent-red); }

.bento-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.bento-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.bento-large {
    grid-column: span 2;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.bento-large i { font-size: 2.25rem; }
.bento-large h3 { font-size: 1.25rem; }
.bento-large p { font-size: 1rem; }

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

/* Highlights zigzag */
.highlights {
    position: relative;
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-dark) 100%);
    overflow: hidden;
}

.highlights-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 60% at 50% 50%, var(--accent-red-dim) 0%, transparent 60%);
    pointer-events: none;
}

.highlights .section-head {
    text-align: center;
    margin-bottom: 3rem;
}

.zigzag {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.zigzag-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.zigzag-row.reverse {
    direction: rtl;
}

.zigzag-row.reverse > * {
    direction: ltr;
}

.zigzag-num {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

.zigzag-content h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.zigzag-content p {
    color: var(--text-muted);
    font-size: 1rem;
}

.zigzag-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.icon-wrap {
    width: 120px;
    height: 120px;
    background: linear-gradient(145deg, var(--bg-light) 0%, var(--bg-mid) 100%);
    border: 1px solid var(--bg-lighter);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--accent-blue);
}

.zigzag-row.reverse .icon-wrap { color: var(--accent-red); }

/* Screenshots */
.screenshots {
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-base) 100%);
}

.screenshots .section-head {
    text-align: center;
    margin-bottom: 2.5rem;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.screenshot-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--bg-lighter);
    background: var(--bg-light);
    transition: transform var(--transition), box-shadow var(--transition);
}

.screenshot-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.screenshot-item img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 9 / 16;
    object-fit: cover;
}

/* Download */
.download {
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
    text-align: center;
}

.download-text {
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 2rem;
    font-size: 1.05rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-store {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-light);
    border: 1px solid var(--bg-lighter);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: background var(--transition), border-color var(--transition);
}

.btn-store i {
    font-size: 1.75rem;
    color: var(--accent-blue);
}

.btn-store span {
    text-align: left;
}

.btn-store span small {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-muted);
}

.btn-store span strong {
    display: block;
    font-size: 1rem;
}

.btn-store:hover {
    background: var(--bg-lighter);
    border-color: var(--accent-blue);
}

/* Disclaimer */
.disclaimer {
    padding: 2rem 0;
    background: var(--bg-base);
}

.disclaimer-box {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    background: var(--bg-mid);
    border: 1px solid var(--bg-lighter);
    border-left: 4px solid var(--accent-red);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.disclaimer-box strong {
    color: var(--text);
}

/* Footer */
.footer {
    padding: 3rem 0 0;
    background: var(--bg-dark);
    border-top: 1px solid var(--bg-mid);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 2.5rem 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--bg-mid);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-brand-col .footer-brand {
    margin-bottom: 0.25rem;
}

.footer-brand {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text);
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    max-width: 220px;
}

.footer-heading {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links li {
    margin: 0;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.footer-email {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color var(--transition);
}

.footer-email:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    padding: 1.25rem 0;
    text-align: center;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
    opacity: 0.85;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-left {
        max-width: 100%;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-right {
        order: -1;
    }

    .hero-banner {
        max-width: 280px;
        margin: 0 auto;
    }

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

    .bento-large {
        grid-column: span 2;
        grid-row: span 1;
    }

    .zigzag-row,
    .zigzag-row.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .zigzag-visual {
        order: -1;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-mid);
        flex-direction: column;
        padding: 5rem 1.5rem 1.5rem;
        gap: 1rem;
        transition: right var(--transition);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-toggle {
        display: block;
    }

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

    .bento-large,
    .bento-wide {
        grid-column: span 1;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-brand-col {
        align-items: center;
    }

    .footer-tagline {
        max-width: none;
        text-align: center;
    }

    .footer-col {
        align-items: center;
    }

    .footer-links {
        align-items: center;
    }
}

/* Download 弹窗 */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal.open .modal-content {
    transform: scale(1);
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    cursor: pointer;
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 400px;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-mid) 100%);
    border: 1px solid var(--bg-lighter);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform var(--transition);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: var(--radius);
    transition: color var(--transition), background var(--transition);
}

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

.modal-body {
    text-align: center;
    padding-right: 1rem;
}

.modal-icon {
    font-size: 2.5rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.modal-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}