/* ZI Network - Premium Cybernetic Dark Mode Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #06050b;
    --bg-dark-light: #0d0c18;
    --bg-card: rgba(18, 16, 35, 0.65);
    --border-glass: rgba(255, 255, 255, 0.06);
    --border-glass-glow: rgba(108, 93, 211, 0.25);
    
    --primary: #6C5DD3;
    --primary-gradient: linear-gradient(135deg, #8E7BFD 0%, #6C5DD3 100%);
    --accent-cyan: #00F2FE;
    --accent-violet: #7F00FF;
    --accent-green: #00FF87;
    
    --text-main: #E2E8F0;
    --text-muted: #94A3B8;
    --text-white: #FFFFFF;
    
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    
    --shadow-glow: 0 0 20px rgba(108, 93, 211, 0.25);
    --shadow-cyan: 0 0 20px rgba(0, 242, 254, 0.25);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(108, 93, 211, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(0, 242, 254, 0.12) 0px, transparent 50%);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .font-title {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-white);
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-center { text-align: center; }
.my-4 { margin-top: 2rem; margin-bottom: 2rem; }
.py-5 { padding-top: 5rem; padding-bottom: 5rem; }

.section-title {
    font-size: 2.75rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #FFFFFF 30%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title span {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-white);
    box-shadow: 0px 10px 20px -5px rgba(108, 93, 211, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0px 15px 25px -3px rgba(108, 93, 211, 0.5), var(--shadow-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

/* Header & Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 5, 11, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(6, 5, 11, 0.92);
    border-bottom-color: var(--border-glass-glow);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 1.5rem;
    color: var(--text-white);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

.logo strong {
    color: var(--accent-cyan);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--primary));
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-white);
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--text-white);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-white);
    margin: 5px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: 100px;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.hero-title {
    font-size: 3.8rem;
    line-height: 1.15;
}

.hero-title span {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 540px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    margin-top: 8px;
}

.hero-downloads {
    display: flex;
    gap: 24px;
    margin-top: 16px;
}

.download-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.download-link:hover {
    color: var(--accent-cyan);
}

/* Simulator & Widget Design */
.hero-illustration {
    display: flex;
    justify-content: center;
    position: relative;
}

.sim-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(24px);
    border-radius: 28px;
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.6);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.sim-widget::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(108,93,211,0.05) 0%, transparent 60%);
    pointer-events: none;
}

.sim-widget:hover {
    border-color: var(--border-glass-glow);
    box-shadow: 0 35px 70px -10px rgba(0,0,0,0.7), var(--shadow-glow);
}

.sim-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.sim-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.sim-status-dot {
    width: 8px;
    height: 8px;
    background: var(--error);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--error);
    transition: var(--transition);
}

.sim-status-dot.active {
    background: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
}

.sim-display {
    text-align: center;
    margin-bottom: 28px;
    padding: 24px 0;
    position: relative;
}

.sim-coins {
    font-family: 'Outfit', sans-serif;
    font-size: 3.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.sim-display span {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    font-weight: 600;
}

.sim-rate {
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Particle Background Canvas */
#bg-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(16px);
    border-radius: 20px;
    padding: 36px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glass-glow);
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.5), var(--shadow-glow);
}

.feature-icon-wrapper {
    width: 56px;
    height: 56px;
    background: rgba(108, 93, 211, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    border: 1px solid rgba(108, 93, 211, 0.2);
    color: var(--accent-cyan);
}

.feature-card:hover .feature-icon-wrapper {
    background: var(--primary-gradient);
    color: var(--text-white);
    box-shadow: var(--shadow-glow);
}

.feature-title {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

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

/* Interactive Staking Calculator Widget */
.staking-calculator-box {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.calc-inputs {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
}

.input-slider-label span {
    color: var(--accent-cyan);
}

.custom-range {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255,255,255,0.1);
    outline: none;
}

.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-cyan);
    cursor: pointer;
    box-shadow: var(--shadow-cyan);
    transition: var(--transition);
}

.custom-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.staking-durations {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.staking-duration-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    padding: 10px;
    border-radius: 10px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.staking-duration-btn.active, .staking-duration-btn:hover {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-white);
    box-shadow: var(--shadow-glow);
}

.calc-outputs {
    background: rgba(6, 5, 11, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: 18px;
    padding: 32px;
    text-align: center;
}

.calc-yield-num {
    font-family: 'Outfit', sans-serif;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--accent-green);
    margin-bottom: 4px;
}

.calc-apy-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 255, 135, 0.1);
    color: var(--accent-green);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 16px;
    border: 1px solid rgba(0, 255, 135, 0.2);
}

.calc-detail-rows {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-top: 1px solid var(--border-glass);
    padding-top: 16px;
}

.calc-detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.calc-detail-row strong {
    color: var(--text-white);
}

/* Roadmap Timeline Rebuild */
.roadmap-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0;
}

.roadmap-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--primary), var(--accent-cyan), transparent);
}

.roadmap-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
    position: relative;
}

.roadmap-item:nth-child(even) .roadmap-content-box {
    grid-column: 2;
}

.roadmap-item:nth-child(even) .roadmap-meta-box {
    grid-column: 1;
    text-align: right;
}

.roadmap-dot {
    position: absolute;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--bg-dark);
    border: 3px solid var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary);
    z-index: 2;
}

.roadmap-dot.active {
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-cyan);
}

.roadmap-content-box {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(16px);
    border-radius: 18px;
    padding: 28px;
    transition: var(--transition);
}

.roadmap-content-box:hover {
    border-color: var(--border-glass-glow);
    box-shadow: 0 15px 30px -10px rgba(0,0,0,0.5);
    transform: translateY(-2px);
}

.roadmap-phase {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.roadmap-item-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.roadmap-tasks {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.roadmap-tasks li {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.roadmap-tasks li.done {
    color: var(--text-white);
}

.roadmap-tasks li::before {
    content: '○';
    color: var(--primary);
    font-weight: bold;
}

.roadmap-tasks li.done::before {
    content: '●';
    color: var(--accent-cyan);
}

.roadmap-meta-box {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.roadmap-date {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
}

.roadmap-status-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* FAQ Accordion Rebuild */
.faq-box {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 14px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-card:hover {
    border-color: var(--border-glass-glow);
}

.faq-trigger {
    width: 100%;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    text-align: left;
}

.faq-question {
    font-family: 'Outfit', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-white);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--accent-cyan);
    transition: var(--transition);
}

.faq-drawer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease-out;
}

.faq-content {
    padding: 0 24px 24px 24px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-card.open .faq-drawer {
    max-height: 200px;
}

.faq-card.open .faq-icon {
    transform: rotate(45deg);
    color: var(--primary);
}

/* Footer layout */
.footer {
    border-top: 1px solid var(--border-glass);
    background: rgba(6, 5, 11, 0.9);
    padding: 48px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-links {
    display: flex;
    justify-content: flex-end;
    gap: 32px;
    list-style: none;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.footer-copy {
    border-top: 1px solid rgba(255,255,255,0.03);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
}

/* Whitepaper Table of Contents Layout */
.whitepaper-section {
    padding-top: 140px;
    padding-bottom: 80px;
}

.whitepaper-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    align-items: start;
}

.whitepaper-sidebar {
    position: sticky;
    top: 110px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 24px;
}

.whitepaper-sidebar h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 12px;
}

.whitepaper-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.whitepaper-nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
}

.whitepaper-nav a:hover, .whitepaper-nav a.active {
    color: var(--text-white);
    background: rgba(108, 93, 211, 0.1);
    border-left: 3px solid var(--accent-cyan);
}

.whitepaper-content {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 48px;
}

.whitepaper-content h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.whitepaper-content h2 {
    font-size: 1.6rem;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--accent-cyan);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 8px;
}

.whitepaper-content p {
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.7;
}

.whitepaper-content ul, .whitepaper-content ol {
    margin-left: 20px;
    margin-bottom: 20px;
    color: var(--text-main);
}

.whitepaper-content li {
    margin-bottom: 8px;
}

/* Floating Animation */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.float-element {
    animation: float 6s ease-in-out infinite;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .roadmap-line {
        left: 24px;
    }
    
    .roadmap-dot {
        left: 24px;
    }
    
    .roadmap-item {
        grid-template-columns: 1fr;
        gap: 20px;
        padding-left: 56px;
    }
    
    .roadmap-item:nth-child(even) .roadmap-content-box {
        grid-column: 1;
    }
    
    .roadmap-item:nth-child(even) .roadmap-meta-box {
        grid-column: 1;
        text-align: left;
    }
    
    .calc-grid {
        grid-template-columns: 1fr;
    }
    
    .whitepaper-grid {
        grid-template-columns: 1fr;
    }
    
    .whitepaper-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-ctas {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
    }
    
    .hero-downloads {
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}