/* ========================================
   SmartAI Signal Landing Page
   Modern Crypto Trading Aesthetic
   ======================================== */

:root {
    /* Colors */
    --bg-primary: #0a0e27;
    --bg-secondary: #131842;
    --bg-card: #1a1f4a;
    --text-primary: #ffffff;
    --text-secondary: #a8b2d1;
    --accent-primary: #00ff88;
    --accent-secondary: #00d4ff;
    --accent-purple: #8b5cf6;
    --accent-red: #ff4444;
    --accent-yellow: #fbbf24;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00ff88 0%, #00d4ff 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 255, 136, 0.2) 0%, rgba(0, 212, 255, 0.2) 100%);
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px;
    
    /* Typography */
    --font-display: 'Archivo', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

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

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   Background Effects
   ======================================== */

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.bg-gradient {
    position: fixed;
    top: -50%;
    right: -20%;
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-100px, 100px) rotate(180deg); }
}

/* ========================================
   Container
   ======================================== */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ========================================
   Navigation
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 255, 136, 0.1);
    z-index: 1000;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    font-size: 24px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* ========================================
   Buttons
   ======================================== */

.btn-primary {
    padding: 12px 24px;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 255, 136, 0.3);
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-radius: 12px;
    font-weight: 700;
    font-size: 18px;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-hero:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 255, 136, 0.4);
}

.btn-pricing {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-pricing:hover {
    border-color: var(--accent-primary);
    background: rgba(0, 255, 136, 0.05);
}

.btn-pricing.primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-color: transparent;
}

.btn-pricing.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 255, 136, 0.3);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    padding: 180px 0 120px;
    text-align: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-primary);
    margin-bottom: 32px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7);
    }
    50% {
        opacity: 0.5;
        box-shadow: 0 0 0 8px rgba(0, 255, 136, 0);
    }
}

.hero-title {
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 48px;
}

.hero-stats {
    display: flex;
    gap: 64px;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 48px;
    font-weight: 900;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========================================
   Section Headers
   ======================================== */

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ========================================
   Stats Section
   ======================================== */

.stats-section {
    padding: var(--section-padding) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 32px rgba(0, 255, 136, 0.2);
}

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.stat-icon {
    font-size: 32px;
}

.stat-trend {
    padding: 4px 12px;
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-primary);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    font-family: var(--font-mono);
}

.stat-trend.up {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-primary);
}

.stat-card-value {
    font-size: 56px;
    font-weight: 900;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.stat-card-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.stat-card-detail {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========================================
   Protection Info
   ======================================== */

.protection-info {
    background: var(--bg-card);
    border: 2px solid rgba(0, 255, 136, 0.3);
    border-radius: 16px;
    padding: 48px;
    margin-top: 64px;
}

.protection-info h3 {
    font-size: 32px;
    margin-bottom: 32px;
    text-align: center;
}

.protection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.protection-item {
    display: flex;
    gap: 16px;
}

.protection-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.protection-content h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.protection-content p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   Features Section
   ======================================== */

.features-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

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

.feature-card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
}

.feature-number {
    position: absolute;
    top: -20px;
    left: 32px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-family: var(--font-mono);
}

.feature-card h3 {
    font-size: 24px;
    margin: 16px 0;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   Pricing Section
   ======================================== */

.pricing-section {
    padding: var(--section-padding) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    align-items: start;
}

.pricing-card {
    background: var(--bg-card);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--accent-primary);
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 255, 136, 0.3);
}

.pricing-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.pricing-tag.popular {
    background: var(--gradient-primary);
    color: var(--bg-primary);
}

.pricing-name {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 16px;
}

.pricing-price {
    margin-bottom: 32px;
}

.price-value {
    font-size: 64px;
    font-weight: 900;
    font-family: var(--font-mono);
    color: var(--accent-primary);
}

.price-period {
    font-size: 18px;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 12px;
}

.check {
    color: var(--accent-primary);
    font-weight: 700;
}

/* ========================================
   FAQ Section
   ======================================== */

.faq-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 32px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--accent-primary);
}

.faq-item h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   CTA Section
   ======================================== */

.cta-section {
    padding: 120px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.cta-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 48px;
}

.footer-col h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .hero-title {
        font-size: 48px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }
    
    .section-header h2 {
        font-size: 36px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .pricing-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        gap: 16px;
        font-size: 14px;
    }
}