/* ============================================
   星聲演唱會粉絲服務 — 主樣式表
   設計語言：霓虹紫藍漸層 + 深色舞台感
   ============================================ */

:root {
    --color-bg: #0b0a1a;
    --color-bg-2: #12102a;
    --color-surface: #1b1838;
    --color-surface-2: #232052;
    --color-primary: #a855f7;
    --color-primary-2: #7c3aed;
    --color-accent: #ec4899;
    --color-cyan: #22d3ee;
    --color-text: #f5f3ff;
    --color-text-soft: #c7c3e0;
    --color-text-mute: #8e8aa8;
    --color-border: rgba(255, 255, 255, 0.12);
    --gradient-main: linear-gradient(135deg, #a855f7 0%, #ec4899 55%, #22d3ee 100%);
    --gradient-bg: radial-gradient(ellipse at top, #1e1b4b 0%, #0b0a1a 60%);
    --shadow-glow: 0 0 40px rgba(168, 85, 247, 0.35);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container: 1160px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    background-image: var(--gradient-bg);
    background-attachment: fixed;
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ Buttons ============ */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 0 60px rgba(236, 72, 153, 0.5); }
.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ============ Header ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 10, 26, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.25rem;
}
.brand-mark { font-size: 1.6rem; }
.brand-name {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.main-nav ul { display: flex; gap: 8px; }
.main-nav a {
    display: block;
    padding: 8px 18px;
    border-radius: 999px;
    color: var(--color-text-soft);
    font-weight: 500;
    transition: var(--transition);
}
.main-nav a:hover { color: var(--color-text); background: rgba(255,255,255,0.06); }
.main-nav a.active {
    color: #fff;
    background: var(--color-primary);
    box-shadow: 0 4px 20px rgba(168,85,247,0.4);
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--color-text); border-radius: 2px; transition: var(--transition); }

/* ============ Hero ============ */
.hero {
    position: relative;
    overflow: hidden;
    padding: 110px 0 90px;
    text-align: center;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 40%, rgba(236,72,153,0.18), transparent 55%);
    pointer-events: none;
}
.hero-badge {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-soft);
    margin-bottom: 24px;
}
.hero h1 {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.hero h1 .highlight {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-sub {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-soft);
    max-width: 620px;
    margin: 0 auto 36px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-visual {
    margin-top: 60px;
    position: relative;
    height: 220px;
}
.floating-card {
    position: absolute;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 14px 22px;
    border-radius: var(--radius);
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: float 4s ease-in-out infinite;
}
.floating-card.card-1 { left: 8%; top: 20px; animation-delay: 0s; }
.floating-card.card-2 { left: 30%; top: 110px; animation-delay: 1s; }
.floating-card.card-3 { right: 30%; top: 40px; animation-delay: 2s; }
.floating-card.card-4 { right: 8%; top: 130px; animation-delay: 1.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

/* ============ Sections ============ */
.section { padding: 80px 0; }
.section-alt { background: rgba(255,255,255,0.025); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.section-title { font-size: 2rem; font-weight: 800; margin-bottom: 40px; }
.section-title.center { text-align: center; }
.center { text-align: center; }

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.col-text h2 { font-size: 2rem; margin-bottom: 20px; }
.col-text p { color: var(--color-text-soft); margin-bottom: 16px; }
.col-text strong { color: var(--color-accent); }

.about-visual {
    position: relative;
    height: 320px;
    background: radial-gradient(circle, rgba(124,58,237,0.2), transparent 70%);
    border-radius: var(--radius);
}

/* Grid helpers */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ============ Cards ============ */
.value-card, .service-card, .team-card, .info-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 26px;
    transition: var(--transition);
}
.value-card:hover, .service-card:hover, .team-card:hover, .info-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}
.value-icon, .service-icon, .team-avatar {
    font-size: 2.6rem;
    margin-bottom: 16px;
}
.value-card h3, .service-card h3, .team-card h4 { margin-bottom: 12px; font-size: 1.25rem; }
.value-card p, .service-card p, .team-card p { color: var(--color-text-soft); font-size: 0.95rem; }

/* Service card specific */
.service-features { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--color-border); }
.service-features li { color: var(--color-text-mute); font-size: 0.9rem; padding: 4px 0; }
.service-features li::before { content: "✓ "; color: var(--color-cyan); font-weight: bold; }

/* Stats */
.stats-section { padding: 60px 0; }
.stat { text-align: center; }
.stat-number, .stat-plus {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline;
}
.stat-label { display: block; color: var(--color-text-mute); margin-top: 8px; font-size: 0.95rem; }

/* Team */
.team-grid { margin-top: 20px; }
.team-avatar { font-size: 3rem; }
.team-role { color: var(--color-accent); font-size: 0.85rem; font-weight: 600; display: block; margin-bottom: 10px; }

/* ============ Forms ============ */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}
.info-card h3 { margin-bottom: 16px; }
.info-item { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 20px; }
.info-item .icon { font-size: 1.4rem; flex-shrink: 0; }
.info-item strong { display: block; font-size: 0.95rem; }
.info-item span { color: var(--color-text-mute); font-size: 0.9rem; }
.social-links { display: flex; gap: 12px; margin-top: 8px; }
.social-links a {
    width: 42px; height: 42px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: var(--color-surface-2); border: 1px solid var(--color-border);
    font-size: 1.2rem; transition: var(--transition);
}
.social-links a:hover { background: var(--color-primary); transform: translateY(-3px); }

.form-card { padding: 36px; }
.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 0.92rem; }
.form-row label .required { color: var(--color-accent); }
.form-row input, .form-row select, .form-row textarea {
    width: 100%;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg-2);
    color: var(--color-text);
    font: inherit;
    transition: var(--transition);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(168,85,247,0.2);
}
.form-row textarea { resize: vertical; min-height: 120px; }
.form-hint { font-size: 0.8rem; color: var(--color-text-mute); margin-top: 6px; }
.btn-block { width: 100%; }

/* ============ Legal Pages ============ */
.legal-content {
    max-width: 860px;
    margin: 0 auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 48px;
}
.legal-content h2 { font-size: 1.5rem; margin: 32px 0 14px; color: var(--color-primary); }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { color: var(--color-text-soft); margin-bottom: 14px; }
.legal-content ul { margin: 10px 0 18px 20px; }
.legal-content li { color: var(--color-text-soft); margin-bottom: 8px; list-style: disc; }
.legal-content strong { color: var(--color-text); }
.updated-date { color: var(--color-text-mute); font-size: 0.9rem; margin-bottom: 24px; }

/* Page hero (subpages) */
.page-hero { padding: 80px 0 40px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; margin-bottom: 12px; }
.page-hero .hero-sub { color: var(--color-text-soft); }

/* CTA section */
.cta-section { text-align: center; }
.cta-section h2 { font-size: 2rem; margin-bottom: 14px; }
.cta-section p { color: var(--color-text-soft); margin-bottom: 28px; }

/* ============ Footer ============ */
.site-footer { background: rgba(0,0,0,0.35); border-top: 1px solid var(--color-border); padding: 60px 0 0; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-tagline { color: var(--color-text-mute); margin-top: 14px; font-size: 0.92rem; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--color-text-soft); transition: var(--transition); font-size: 0.92rem; }
.footer-links a:hover { color: var(--color-primary); }
.site-footer h5 { font-size: 1rem; margin-bottom: 16px; }
.footer-bottom { border-top: 1px solid var(--color-border); padding: 24px 0; text-align: center; color: var(--color-text-mute); font-size: 0.85rem; }

/* ============ Toast ============ */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--color-surface-2);
    border: 1px solid var(--color-primary);
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ Responsive ============ */
@media (max-width: 900px) {
    .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
    .two-col, .contact-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-visual { height: 240px; }
}
@media (max-width: 640px) {
    .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .main-nav {
        position: fixed;
        top: 74px; right: 0; left: 0;
        background: var(--color-bg-2);
        padding: 20px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-150%);
        transition: var(--transition);
    }
    .main-nav.open { transform: translateY(0); }
    .main-nav ul { flex-direction: column; gap: 4px; }
    .main-nav a { padding: 14px 18px; }
    .nav-toggle { display: flex; }
    .hero { padding: 60px 0 50px; }
    .section { padding: 55px 0; }
    .legal-content { padding: 28px 22px; }
    .floating-card.card-2, .floating-card.card-3 { display: none; }
}

/* ============ Reusable Animations ============ */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.5s ease forwards; }