/* 
 * Penumbra Works - Global Styles
 * Theme: Cyber-Classicism / Brutalist Tech
 */

 :root {
    --bg: #050508;
    --text-main: #f4f4f5;
    --text-muted: #71717a;
    
    /* 核心色彩：科技蓝与古典金 */
    --tech-blue: #4f46e5;
    --tech-blue-glow: rgba(79, 70, 229, 0.4);
    --art-gold: #d4c4a8;
    --art-gold-glow: rgba(212, 196, 168, 0.2);
    
    /* 字体 */
    --font-tech: "Inter", -apple-system, sans-serif;
    --font-art: "Cormorant Garamond", serif;
    --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html { background-color: var(--bg); scroll-behavior: smooth; }
body {
    background-color: transparent;
    color: var(--text-main);
    font-family: var(--font-tech);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* =========================================
   1. 语言控制
   ========================================= */
html[lang="en"] .lang-zh { display: none !important; }
html[lang="zh"] .lang-en { display: none !important; }

.monospace {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* =========================================
   2. 极简网格背景
   ========================================= */
.bg-layer {
    position: fixed; inset: 0;
    z-index: -10; pointer-events: none;
}
.noise {
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.15;
    mix-blend-mode: overlay;
}
.grid-overlay {
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
    mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 70%);
    -webkit-mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 70%);
}

/* =========================================
   3. 导航栏 (液态玻璃质感)
   ========================================= */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.5rem 5%; z-index: 100;
    background: rgba(5, 5, 8, 0.5);
    backdrop-filter: blur(24px) saturate(150%);
    -webkit-backdrop-filter: blur(24px) saturate(150%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.logo {
    font-family: var(--font-tech);
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}
.lang-switch { display: flex; gap: 1rem; }
.lang-btn {
    background: none; border: none; color: var(--text-muted);
    cursor: pointer; transition: color 0.3s;
}
.lang-btn:hover, .lang-btn.active { color: var(--text-main); }

/* =========================================
   4. 主视觉 Hero：黑洞/半影
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center;
}

/* 视觉焦点：日食黑洞 */
.eclipse-container {
    position: absolute;
    top: 45%; left: 50%;
    transform: translate(-50%, -50%);
    width: 350px; height: 350px;
    z-index: 1;
    pointer-events: none;
    transition: transform 0.1s ease-out; /* 供JS视差使用 */
}
.eclipse-core {
    position: absolute; inset: -15px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, var(--tech-blue), var(--art-gold), var(--tech-blue));
    filter: blur(25px);
    animation: spin-simple 8s linear infinite;
    opacity: 0.7;
}
.eclipse-surface {
    position: absolute; inset: 0;
    border-radius: 50%;
    background: #050508;
    box-shadow: inset 0 0 30px rgba(0,0,0,1);
    border: 1px solid rgba(255,255,255,0.05);
}
.orbit {
    position: absolute;
    border-radius: 50%;
    border: 1px dashed rgba(255,255,255,0.1);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}
.ring-1 { width: 500px; height: 500px; animation: spin-center-reverse 30s linear infinite; }
.ring-2 { width: 700px; height: 700px; border-style: solid; border-color: rgba(255,255,255,0.03); animation: spin-center 40s linear infinite; }

@keyframes spin-simple { 
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); } 
}
@keyframes spin-center { 
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); } 
}
@keyframes spin-center-reverse { 
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(-360deg); } 
}

/* Hero 排版 */
.hero-content {
    position: relative; z-index: 10;
    margin-top: 4rem;
}
.badge {
    color: var(--art-gold);
    margin-bottom: 2rem;
    opacity: 0.8;
}
.brand-title {
    margin-bottom: 1.5rem;
    color: #fff;
    text-shadow: 0 10px 40px rgba(0,0,0,0.8);
}
/* 英文：粗野极客风 (Brutalist Tech) - 换行且统一使用无衬线字体 */
.brutalist-title {
    font-family: var(--font-tech);
    display: block;
    line-height: 0.9;
    text-transform: uppercase;
}
.brutalist-title .tech-huge {
    font-size: clamp(4rem, 12vw, 8rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    display: block;
}
.brutalist-title .tech-sub {
    font-size: clamp(3rem, 9vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--art-gold);
    display: block;
}

/* 中文：古典优雅风 */
.elegant-title {
    font-family: var(--font-art);
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: 0.05em;
    display: block;
}
.brand-subtitle {
    font-family: var(--font-tech);
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-muted);
    font-weight: 400;
}
.scroll-indicator {
    position: absolute;
    bottom: 2rem; left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    text-align: center;
}
.scroll-indicator .arrow { display: block; margin-top: 0.5rem; animation: bounce 2s infinite; }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

/* =========================================
   5. 极客风卡片网格
   ========================================= */
.container { max-width: 1200px; margin: 0 auto; padding: 0 5%; }
.works { padding: 4rem 0 8rem; }
.section-header {
    display: flex; align-items: center; gap: 1rem;
    margin-bottom: 3rem; color: var(--text-muted);
}
.section-header .line { flex: 1; height: 1px; background: rgba(255,255,255,0.1); }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    position: relative;
    background: rgba(10, 10, 15, 0.4);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 2.5rem;
    text-decoration: none; color: inherit;
    display: flex; flex-direction: column;
    min-height: 320px;
    transition: background 0.3s, border-color 0.3s;
    backdrop-filter: blur(10px);
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    /* 使用每张卡片的专属高光颜色变量，默认为白色 */
    background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--card-spotlight, rgba(255, 255, 255, 0.08)), transparent 40%);
    z-index: 0;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}
.card::after {
    content: '';
    position: absolute;
    top: 0; left: 15%; right: 15%;
    height: 1px;
    /* 悬停时顶部出现产品专属颜色的光晕线 */
    background: linear-gradient(to right, transparent, var(--card-top-glow, rgba(255,255,255,0.15)), transparent);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card:hover::after  { opacity: 1; }
.card:hover {
    background: rgba(20, 20, 30, 0.6);
    border-color: rgba(255,255,255,0.2);
}

/* =========================================
   Per-Product Card Theming（产品专属主题）
   ========================================= */

/* ArcTable：神秘紫 */
.card[data-product="arctable"] {
    --card-spotlight: rgba(139, 92, 246, 0.12);
    --card-top-glow: rgba(139, 92, 246, 0.7);
}
.card[data-product="arctable"]:hover .card-corners { border-color: #a78bfa; }

/* Phesleep：午夜蓝 */
.card[data-product="phesleep"] {
    --card-spotlight: rgba(56, 189, 248, 0.1);
    --card-top-glow: rgba(56, 189, 248, 0.6);
}
.card[data-product="phesleep"]:hover .card-corners { border-color: #38bdf8; }

/* Flura：自然绿 */
.card[data-product="flura"] {
    --card-spotlight: rgba(52, 211, 153, 0.1);
    --card-top-glow: rgba(52, 211, 153, 0.6);
}
.card[data-product="flura"]:hover .card-corners { border-color: #34d399; }

/* Postrail：琥珀暖色 */
.card[data-product="postrail"] {
    --card-spotlight: rgba(251, 191, 36, 0.08);
    --card-top-glow: rgba(251, 191, 36, 0.5);
}
.card[data-product="postrail"]:hover .card-corners { border-color: #fbbf24; }

/* 卡片背景装饰符号：大号半透明，静置时极淡，悬停时微微浮现 */
.card-symbol {
    position: absolute;
    bottom: 1.2rem; right: 1.5rem;
    font-size: 5.5rem;
    opacity: 0.04;
    pointer-events: none;
    z-index: 0;
    line-height: 1;
    transition: opacity 0.5s;
    user-select: none;
}
.card:hover .card-symbol { opacity: 0.09; }
.card-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* 卡片科技角标 */
.card-corners { position: absolute; width: 8px; height: 8px; border: 1px solid var(--text-muted); transition: border-color 0.3s; }
.card:hover .card-corners { border-color: var(--art-gold); }
.top-left { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.top-right { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.bottom-left { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.bottom-right { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.card-meta { display: flex; justify-content: space-between; margin-bottom: 2rem; color: var(--text-muted); }
.status-live { color: #10b981; }
.status-offline { color: var(--text-muted); }

.card-title {
    font-family: var(--font-art);
    font-size: 2.5rem; font-weight: 500;
    margin-bottom: 1rem; color: #fff;
}
.card-desc { color: var(--text-muted); font-size: 0.95rem; flex-grow: 1; }

.card-actions { margin-top: 2rem; display: flex; flex-direction: column; gap: 0.8rem; }
.action-link { color: var(--text-muted); text-decoration: none; transition: all 0.3s; position: relative; z-index: 10; display: inline-flex; align-items: center; width: fit-content; }
.action-link::before { content: '>'; margin-right: 0.5rem; opacity: 0; transform: translateX(-10px); transition: all 0.3s; color: var(--art-gold); }
.action-link:hover { color: var(--art-gold); text-shadow: 0 0 8px var(--art-gold-glow); }
.action-link:hover::before { opacity: 1; transform: translateX(0); }

.card.disabled { opacity: 0.5; pointer-events: none; filter: grayscale(1); }

/* =========================================
   6. 底部
   ========================================= */
footer {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 3rem 5%;
}
.footer-content { display: flex; flex-wrap: wrap; justify-content: space-between; max-width: 1200px; margin: 0 auto; gap: 2rem; }
.footer-links { display: flex; gap: 2rem; }
.footer-links a { color: var(--text-muted); text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: #fff; }

/* 法律合规页 */
.legal-container { padding: 8rem 5% 4rem; max-width: 800px; margin: 0 auto; }
.back-link { display: inline-block; margin-bottom: 4rem; color: var(--text-muted); text-decoration: none; }
.back-link:hover { color: #fff; }
.legal-title { font-family: var(--font-art); font-size: 3rem; margin-bottom: 1rem; }
.legal-date { color: var(--art-gold); margin-bottom: 3rem; }
.legal-content h2 { font-size: 1.2rem; margin: 3rem 0 1rem; color: #fff; border-bottom: 1px dashed rgba(255,255,255,0.1); padding-bottom: 0.5rem; }
.legal-content p, .legal-content ul { color: var(--text-muted); margin-bottom: 1.2rem; font-weight: 300; }
.legal-content ul { padding-left: 1.5rem; }
.legal-content a { color: var(--art-gold); }