/* ===================================================
   OpenClaw 官网 - index.css
   Glassmorphism + Spatial Command Center
   =================================================== */

/* ===== Design Tokens ===== */
:root {
    --bg-void: #030608;
    --bg-deep: #060b14;
    --bg-mid: #0a1020;
    --glass: rgba(12, 20, 40, 0.45);
    --glass-hover: rgba(18, 30, 56, 0.55);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-border-hover: rgba(255, 107, 74, 0.15);
    --glass-shine: rgba(255, 255, 255, 0.03);
    --lobster: #ff6b4a;
    --lobster-light: #ff8a6a;
    --lobster-dark: #e2523a;
    --lobster-glow: rgba(255, 107, 74, 0.15);
    --cyan: #38d9c4;
    --blue: #5b8def;
    --purple: #a78bfa;
    --gold: #fbbf24;
    --text-1: #f0f2f8;
    --text-2: #8b95a8;
    --text-3: #4a5568;
    --font-display: 'Sora', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
    --font-mono: 'Space Mono', monospace;
    --blur: blur(20px);
    --blur-heavy: blur(40px);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--bg-void);
    color: var(--text-1);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--lobster); border-radius: 2px; }

/* ===== Three.js Canvas ===== */
#hero-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Glass Mixin via Class ===== */
.glass {
    background: var(--glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    transition: background 0.4s ease, border-color 0.4s ease, transform 0.4s var(--ease-out), box-shadow 0.4s ease;
}

.glass:hover {
    background: var(--glass-hover);
    border-color: var(--glass-border-hover);
}

/* ===== Navigation ===== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 2rem;
    background: rgba(3, 6, 8, 0.5);
    backdrop-filter: var(--blur-heavy);
    -webkit-backdrop-filter: var(--blur-heavy);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: all 0.4s ease;
}

nav.scrolled {
    background: rgba(3, 6, 8, 0.85);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.nav-wrap {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-lobster {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 10px var(--lobster-glow));
}

.nav-name {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: -0.5px;
}

.nav-name em {
    font-style: normal;
    color: var(--lobster);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-2);
    font-size: 0.84rem;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--lobster);
    transition: width 0.3s var(--ease-out);
}

.nav-links a:hover { color: var(--lobster-light); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
    padding: 8px 22px;
    border-radius: 8px;
    background: var(--lobster);
    color: #fff;
    font-weight: 700;
    font-size: 0.82rem;
    border: none;
    transition: all 0.3s;
    box-shadow: 0 2px 12px rgba(255, 107, 74, 0.25);
}

.nav-cta:hover {
    background: var(--lobster-light);
    box-shadow: 0 4px 24px rgba(255, 107, 74, 0.35);
    transform: translateY(-1px);
}

.mob-toggle {
    display: none;
    background: none;
    border: none;
    padding: 4px;
    flex-direction: column;
    gap: 5px;
}

.mob-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-1);
    border-radius: 1px;
    transition: 0.3s;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 2rem 80px;
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 860px;
    position: relative;
    z-index: 2;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 50px;
    background: rgba(255, 107, 74, 0.06);
    border: 1px solid rgba(255, 107, 74, 0.12);
    font-size: 0.78rem;
    color: var(--lobster-light);
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
    margin-bottom: 2rem;
    opacity: 0;
}

.hero-tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--lobster);
    box-shadow: 0 0 8px var(--lobster);
    animation: tag-pulse 2s ease-in-out infinite;
}

@keyframes tag-pulse {
    0%, 100% { opacity: 0.5; box-shadow: 0 0 4px var(--lobster); }
    50% { opacity: 1; box-shadow: 0 0 12px var(--lobster); }
}

.hero-h1 {
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    opacity: 0;
}

.hero-h1 a {
    display: block;
}

.lobster-text {
    background: linear-gradient(135deg, var(--lobster), var(--lobster-light), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: clamp(0.95rem, 1.6vw, 1.12rem);
    color: var(--text-2);
    max-width: 620px;
    margin: 0 auto 2.5rem;
    line-height: 1.9;
    opacity: 0;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
}

/* Buttons */
.btn-lobster {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--lobster), var(--lobster-dark));
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
    transition: all 0.3s var(--ease-out);
    box-shadow: 0 4px 20px rgba(255, 107, 74, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-lobster::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-lobster:hover {
    box-shadow: 0 8px 36px rgba(255, 107, 74, 0.45);
    transform: translateY(-2px);
}

.btn-lobster:hover::before { opacity: 1; }

.btn-glass {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-1);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s var(--ease-out);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 107, 74, 0.2);
    transform: translateY(-2px);
}

/* Hero Platforms */
.hero-platforms {
    display: flex;
    justify-content: center;
    gap: 1.8rem;
    margin-top: 3.5rem;
    flex-wrap: wrap;
    opacity: 0;
}

.hero-platform {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.hero-platform-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: var(--glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    transition: all 0.3s var(--ease-out);
}

.hero-platform-icon:hover {
    border-color: var(--glass-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.hero-platform-name {
    font-size: 0.68rem;
    color: var(--text-3);
    letter-spacing: 0.5px;
}

/* ===== Sections ===== */
section {
    position: relative;
    z-index: 1;
    padding: 100px 2rem;
}

.sec-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.sec-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--lobster);
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-bottom: 0.8rem;
    opacity: 0;
}

.sec-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 0.8rem;
    opacity: 0;
}

.sec-desc {
    font-size: 1rem;
    color: var(--text-2);
    max-width: 580px;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0;
}

/* Section BGs */
.sec-bg-deep { background: var(--bg-deep); }
.sec-bg-void { background: var(--bg-void); }
.sec-bg-mid { background: var(--bg-mid); }

/* ===== Download ===== */
.dl-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
}

.dl-card {
    padding: 2rem 1.5rem;
    border-radius: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.dl-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--lobster), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.dl-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.dl-card:hover::before { opacity: 1; }

.dl-icon {
    font-size: 2.4rem;
    margin-bottom: 1rem;
    display: block;
}

.dl-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.dl-card p {
    font-size: 0.78rem;
    color: var(--text-3);
    margin-bottom: 1.2rem;
}

.dl-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 8px;
    background: rgba(255, 107, 74, 0.08);
    border: 1px solid rgba(255, 107, 74, 0.15);
    color: var(--lobster-light);
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.3s;
}

.dl-btn:hover {
    background: rgba(255, 107, 74, 0.15);
    border-color: var(--lobster);
    box-shadow: 0 0 16px rgba(255, 107, 74, 0.15);
}

/* ===== Skills ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.skill-card {
    padding: 1.5rem;
    border-radius: 16px;
    position: relative;
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
}

.skill-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.sk-blue { background: rgba(91, 141, 239, 0.1); }
.sk-green { background: rgba(56, 217, 196, 0.1); }
.sk-orange { background: rgba(251, 191, 36, 0.1); }
.sk-pink { background: rgba(255, 107, 74, 0.1); }
.sk-purple { background: rgba(167, 139, 250, 0.1); }
.sk-cyan { background: rgba(56, 217, 196, 0.1); }

.skill-meta h3 {
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.3;
}

.skill-meta span {
    font-size: 0.7rem;
    color: var(--text-3);
}

.skill-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.badge-official { background: rgba(255, 107, 74, 0.1); color: var(--lobster-light); }
.badge-community { background: rgba(56, 217, 196, 0.08); color: var(--cyan); }

.skill-card > p {
    font-size: 0.84rem;
    color: var(--text-2);
    line-height: 1.6;
}

.skill-tags {
    display: flex;
    gap: 0.4rem;
    margin-top: 0.8rem;
    flex-wrap: wrap;
}

.skill-tag {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.66rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-3);
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.skills-more {
    text-align: center;
}

.skills-more a {
    color: var(--lobster-light);
    font-size: 0.88rem;
    font-weight: 600;
    border-bottom: 1px dashed rgba(255, 107, 74, 0.25);
    transition: all 0.3s;
}

.skills-more a:hover {
    color: var(--lobster);
    border-color: var(--lobster);
}

/* ===== Integrations ===== */
.integ-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.integ-card {
    padding: 1.5rem 1rem;
    border-radius: 14px;
    text-align: center;
}

.integ-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
}

.integ-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.integ-card h3 {
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}

.integ-card p {
    font-size: 0.66rem;
    color: var(--text-3);
}

.integ-tag {
    display: inline-block;
    margin-top: 0.4rem;
    padding: 1px 7px;
    border-radius: 3px;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.tag-ready { background: rgba(56, 217, 196, 0.08); color: var(--cyan); }
.tag-soon { background: rgba(251, 191, 36, 0.08); color: var(--gold); }

/* ===== Features ===== */
.feat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.feat-card {
    padding: 2rem;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.feat-card::after {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--lobster-glow), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.feat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.feat-card:hover::after { opacity: 1; }

.feat-emoji {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    display: block;
}

.feat-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.feat-card p {
    font-size: 0.86rem;
    color: var(--text-2);
    line-height: 1.7;
}

/* ===== Terminal ===== */
.terminal {
    max-width: 680px;
    margin: 2.5rem auto 0;
    border-radius: 16px;
    overflow: hidden;
    background: rgba(8, 12, 22, 0.7);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.term-bar {
    padding: 12px 16px;
    background: rgba(13, 17, 32, 0.8);
    display: flex;
    align-items: center;
    gap: 7px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.term-dot { width: 10px; height: 10px; border-radius: 50%; }
.term-dot.r { background: #ff6b6b; }
.term-dot.y { background: #fbbf24; }
.term-dot.g { background: #34d399; }

.term-title {
    flex: 1;
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-3);
    font-family: var(--font-mono);
}

.term-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 2.1;
}

.t-prompt { color: var(--lobster); }
.t-cmd { color: var(--text-1); }
.t-comment { color: var(--text-3); font-style: italic; }
.t-ok { color: #34d399; }
.t-info { color: var(--blue); padding-left: 1rem; }
.t-line { display: flex; gap: 8px; }

/* ===== Use Cases ===== */
.uc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
}

.uc-card {
    padding: 2rem;
    border-radius: 16px;
}

.uc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.uc-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.uc-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.uc-a { background: linear-gradient(135deg, rgba(255,107,74,0.12), rgba(251,191,36,0.08)); }
.uc-b { background: linear-gradient(135deg, rgba(91,141,239,0.12), rgba(56,217,196,0.08)); }
.uc-c { background: linear-gradient(135deg, rgba(167,139,250,0.12), rgba(91,141,239,0.08)); }
.uc-d { background: linear-gradient(135deg, rgba(56,217,196,0.12), rgba(255,107,74,0.08)); }

.uc-card h3 { font-size: 1.05rem; font-weight: 700; }
.uc-card > p { font-size: 0.88rem; color: var(--text-2); line-height: 1.7; margin-bottom: 0.8rem; }

.uc-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.uc-tag {
    padding: 3px 10px;
    border-radius: 5px;
    font-size: 0.7rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-3);
    border: 1px solid rgba(255, 255, 255, 0.04);
}

/* ===== CTA ===== */
#cta {
    text-align: center;
    padding: 120px 2rem;
    position: relative;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,107,74,0.04), transparent 65%);
    pointer-events: none;
}

.cta-lobster {
    font-size: 4.5rem;
    display: block;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 24px rgba(255,107,74,0.3));
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 900;
    margin-bottom: 0.8rem;
    position: relative;
    z-index: 2;
}

.cta-desc {
    font-size: 1.05rem;
    color: var(--text-2);
    margin-bottom: 2.2rem;
    position: relative;
    z-index: 2;
}

.cta-actions {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-note {
    margin-top: 1.8rem;
    font-size: 0.76rem;
    color: var(--text-3);
    position: relative;
    z-index: 2;
}

/* ===== Footer ===== */
footer {
    position: relative;
    z-index: 1;
    padding: 2.5rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    background: var(--bg-void);
}

.foot-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.2rem;
}

.foot-brand { display: flex; align-items: center; gap: 8px; }
.foot-lobster { font-size: 1.3rem; }
.foot-name { font-family: var(--font-display); font-size: 0.88rem; font-weight: 800; }
.foot-name em { font-style: normal; color: var(--lobster); }
.foot-links { display: flex; gap: 1.5rem; }
.foot-links a { color: var(--text-3); font-size: 0.8rem; transition: color 0.3s; }
.foot-links a:hover { color: var(--lobster-light); }
.foot-copy { font-size: 0.72rem; color: var(--text-3); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .dl-grid { grid-template-columns: repeat(2, 1fr); }
    .integ-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mob-toggle { display: flex; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(3, 6, 8, 0.95);
        backdrop-filter: var(--blur-heavy);
        -webkit-backdrop-filter: var(--blur-heavy);
        padding: 1.5rem 2rem;
        border-bottom: 1px solid rgba(255,255,255,0.04);
        gap: 1rem;
        z-index: 200;
    }
    .skills-grid, .feat-grid { grid-template-columns: 1fr 1fr; }
    .uc-grid { grid-template-columns: 1fr; }
    section { padding: 70px 1.2rem; }
    .hero { padding: 100px 1.2rem 60px; }
}

@media (max-width: 520px) {
    .dl-grid, .skills-grid, .feat-grid, .integ-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-platforms { gap: 0.8rem; }
    .hero-platform-icon { width: 44px; height: 44px; font-size: 1.2rem; }
    .foot-inner { flex-direction: column; text-align: center; }
    .foot-links { flex-wrap: wrap; justify-content: center; gap: 1rem; }
    #cta { padding: 80px 1.2rem; }
}