/* ===============================================
   yilanfangtrade.com - Main Stylesheet
   Tesla-Inspired Design System
   =============================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Color Palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-card: rgba(255, 255, 255, 0.03);
    --color-bg-glass: rgba(255, 255, 255, 0.05);
    --color-bg-glass-hover: rgba(255, 255, 255, 0.08);

    --color-text-primary: #ffffff;
    --color-text-secondary: #b3b3b3;
    --color-text-tertiary: #808080;
    --color-text-muted: #555555;

    --color-accent-primary: #00d4ff;
    --color-accent-secondary: #7c3aed;
    --color-accent-tertiary: #ec4899;
    --color-accent-success: #10b981;
    --color-accent-warning: #f59e0b;
    --color-accent-danger: #ef4444;

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --color-border-accent: rgba(0, 212, 255, 0.3);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
    --gradient-tertiary: linear-gradient(135deg, #00d4ff 0%, #10b981 100%);
    --gradient-dark: linear-gradient(180deg, rgba(10,10,10,0) 0%, rgba(10,10,10,1) 100%);
    --gradient-glow: radial-gradient(circle at 50% 50%, rgba(0,212,255,0.15) 0%, transparent 70%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fs-6xl: 3.75rem;
    --fs-7xl: 4.5rem;
    --fs-8xl: 6rem;
    --fs-9xl: 8rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
    --shadow-glow-purple: 0 0 40px rgba(124, 58, 237, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 800ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Layout */
    --container-max: 1400px;
    --container-padding: 2rem;
    --nav-height: 72px;

    /* Z-Index */
    --z-base: 1;
    --z-elevated: 10;
    --z-sticky: 100;
    --z-overlay: 1000;
    --z-modal: 10000;
    --z-cursor: 99999;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: var(--color-text-muted);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-primary);
}

/* Selection */
::selection {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

h1 { font-size: var(--fs-7xl); }
h2 { font-size: var(--fs-5xl); }
h3 { font-size: var(--fs-3xl); }
h4 { font-size: var(--fs-2xl); }
h5 { font-size: var(--fs-xl); }
h6 { font-size: var(--fs-lg); }

p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-text-primary);
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

code {
    background: var(--color-bg-tertiary);
    color: var(--color-accent-primary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
}

pre {
    background: var(--color-bg-secondary);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--color-border);
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.container-wide {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

/* Section */
.section {
    padding: var(--space-32) 0;
    position: relative;
    overflow: hidden;
}

.section-sm {
    padding: var(--space-20) 0;
}

.section-lg {
    padding: var(--space-32) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-8);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

@media (max-width: 1024px) {
    .grid-3, .grid-4, .grid-6 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4, .grid-6 { grid-template-columns: 1fr; }
}

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-accent { color: var(--color-accent-primary); }
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.text-mono { font-family: var(--font-mono); }
.text-display { font-family: var(--font-display); }
.text-uppercase { text-transform: uppercase; }
.text-lowercase { text-transform: lowercase; }
.text-capitalize { text-transform: capitalize; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }

.tracking-tight { letter-spacing: -0.05em; }
.tracking-tighter { letter-spacing: -0.08em; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.2em; }

.leading-tight { line-height: 1.1; }
.leading-snug { line-height: 1.3; }
.leading-relaxed { line-height: 1.7; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    font-weight: 600;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    user-select: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-text-primary);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
}

.btn-secondary:hover {
    background: var(--color-bg-glass);
    border-color: var(--color-text-primary);
    transform: translateY(-2px);
}

.btn-accent {
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    border: none;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    padding: var(--space-2) var(--space-4);
}

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

.btn-lg {
    padding: var(--space-5) var(--space-10);
    font-size: var(--fs-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--fs-sm);
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
}

/* Cards */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card:hover {
    background: var(--color-bg-glass-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.card-glow:hover {
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.15);
    border-color: var(--color-border-accent);
}

/* Glass Morphism */
.glass {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 10, 10, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.85);
    border-bottom-color: var(--color-border);
}

.navbar-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.navbar-logo svg {
    width: 36px;
    height: 36px;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
}

.navbar-menu a {
    color: var(--color-text-secondary);
    font-size: var(--fs-sm);
    font-weight: 500;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--color-text-primary);
    background: var(--color-bg-glass);
}

.navbar-cta {
    margin-left: var(--space-4);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: transparent;
    border: none;
    padding: var(--space-2);
}

.navbar-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
    border-radius: 1px;
}

.navbar-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
}
.navbar-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: var(--z-overlay);
    padding: var(--space-8) var(--container-padding);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu a {
    color: var(--color-text-primary);
    font-size: var(--fs-2xl);
    font-weight: 600;
    padding: var(--space-4) 0;
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-display);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: var(--nav-height) 0 var(--space-20);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-accent-primary);
    margin-bottom: var(--space-8);
    letter-spacing: 0.05em;
}

.hero-eyebrow .pulse {
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    position: relative;
}

.hero-title {
    font-size: clamp(3rem, 9vw, 9rem);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-8);
    font-family: var(--font-display);
}

.hero-title-line {
    display: block;
    overflow: hidden;
}

.hero-subtitle {
    font-size: var(--fs-xl);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin-bottom: var(--space-12);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-bottom: var(--space-16);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-8);
    max-width: 900px;
}

.hero-stat {
    border-left: 1px solid var(--color-border);
    padding-left: var(--space-6);
}

.hero-stat-value {
    font-family: var(--font-display);
    font-size: var(--fs-4xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.hero-stat-label {
    font-size: var(--fs-sm);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-tertiary);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-family: var(--font-mono);
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--color-text-tertiary);
    border-radius: 12px;
    position: relative;
}

.scroll-mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 6px;
    background: var(--color-accent-primary);
    border-radius: 2px;
    animation: scroll-bounce 2s infinite;
}

@keyframes scroll-bounce {
    0%, 100% { top: 6px; opacity: 1; }
    50% { top: 22px; opacity: 0; }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-20);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-4);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-full);
    background: rgba(0, 212, 255, 0.05);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-6);
}

.section-subtitle {
    font-size: var(--fs-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-20) 0 var(--space-8);
    position: relative;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
}

.footer-brand {
    max-width: 320px;
}

.footer-brand-desc {
    font-size: var(--fs-sm);
    color: var(--color-text-tertiary);
    margin: var(--space-4) 0 var(--space-6);
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    border-color: transparent;
    transform: translateY(-2px);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

.footer-col-title {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-5);
    font-family: var(--font-display);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--color-text-tertiary);
    font-size: var(--fs-sm);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-copyright {
    font-size: var(--fs-sm);
    color: var(--color-text-tertiary);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
    list-style: none;
}

.footer-legal a {
    font-size: var(--fs-sm);
    color: var(--color-text-tertiary);
    text-decoration: none;
}

.footer-legal a:hover {
    color: var(--color-accent-primary);
}

/* Responsive Footer */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .footer-brand {
        grid-column: 1 / -1;
        max-width: none;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Form Elements */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    font-family: var(--font-display);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-4);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    background: var(--color-bg-glass-hover);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
}

.form-error {
    font-size: var(--fs-sm);
    color: var(--color-accent-danger);
    margin-top: var(--space-2);
}

/* Tag / Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    font-size: var(--fs-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-accent {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--color-border-accent);
    color: var(--color-accent-primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--color-accent-success);
}

/* Cursor Effect */
.cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: var(--z-cursor);
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease, width 0.2s ease, height 0.2s ease;
    mix-blend-mode: difference;
}

.cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-accent-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: var(--z-cursor);
    transform: translate(-50%, -50%);
    transition: transform 0.2s ease, width 0.3s ease, height 0.3s ease;
    opacity: 0.6;
}

@media (max-width: 1024px) {
    .cursor-dot, .cursor-ring { display: none; }
}

/* Marquee */
.marquee {
    overflow: hidden;
    position: relative;
    padding: var(--space-8) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.marquee-track {
    display: flex;
    gap: var(--space-12);
    width: max-content;
    animation: marquee-scroll 30s linear infinite;
}

.marquee-item {
    font-family: var(--font-display);
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--color-text-tertiary);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.marquee-item .dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: 50%;
}

@keyframes marquee-scroll {
    to { transform: translateX(-50%); }
}

/* Code Block Display */
.code-block {
    background: #0d1117;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    overflow-x: auto;
    position: relative;
}

.code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-4);
    margin-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.code-dots {
    display: flex;
    gap: var(--space-2);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-line {
    display: block;
    line-height: 1.8;
}

.code-keyword { color: #ff7b72; }
.code-string { color: #a5d6ff; }
.code-function { color: #d2a8ff; }
.code-comment { color: #8b949e; font-style: italic; }
.code-variable { color: #ffa657; }
.code-number { color: #79c0ff; }

/* Page Header (sub pages) */
.page-header {
    padding: calc(var(--nav-height) + var(--space-20)) 0 var(--space-20);
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.page-header-bg {
    position: absolute;
    inset: 0;
    opacity: 0.4;
    pointer-events: none;
}

.page-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-6);
    font-family: var(--font-display);
}

.page-subtitle {
    font-size: var(--fs-xl);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-8);
    font-family: var(--font-mono);
}

.breadcrumb a {
    color: var(--color-text-tertiary);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--color-accent-primary);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
}

/* Animations */
@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-down {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.4); }
    50% { box-shadow: 0 0 40px rgba(0, 212, 255, 0.8); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}