/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-dark: #071a27;
    --primary-blue: #0e6b88;
    --accent-teal: #66d0e8;
    --accent-light: #8fe6ff;
    --text-light: #f6ded4;
    --text-lighter: #eaf6ff;
    --text-muted: #a8c5d6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--accent-teal), var(--primary-blue));
    --gradient-dark: linear-gradient(180deg, var(--primary-blue), var(--primary-dark));
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 6px 20px rgba(0, 0, 0, 0.15);
    --shadow-strong: 0 10px 30px rgba(102, 208, 232, 0.25);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-lighter);
    background: var(--gradient-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== NAVBAR ===== */
.navbar {
    background: rgba(7, 26, 39, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(143, 230, 255, 0.2);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: inherit;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
    color: white;
}

.logo-text h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--accent-light);
}

.logo-text small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

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

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

.nav-auth {
    display: flex;
    gap: var(--space-md);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-lighter);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-light);
    color: var(--accent-light);
}

.btn-outline:hover {
    background: var(--accent-light);
    color: var(--primary-dark);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--text-muted);
    color: var(--text-muted);
}

.btn-secondary:hover {
    border-color: var(--accent-light);
    color: var(--accent-light);
}

.btn-large {
    padding: var(--space-lg) var(--space-xl);
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
}

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

.lead {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.stat h3 {
    font-size: 2rem;
    color: var(--accent-light);
    margin-bottom: var(--space-xs);
}

.stat p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-strong);
}

/* ===== FEATURES ===== */
.features {
    padding: var(--space-2xl) 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--space-2xl);
    color: var(--accent-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(143, 230, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-light);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    color: var(--accent-light);
    margin-bottom: var(--space-sm);
}

/* ===== SIGNALS PREVIEW ===== */
.signals-preview {
    padding: var(--space-2xl) 0;
}

.signals-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

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

/* ===== PRICING ===== */
.pricing {
    padding: var(--space-2xl) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.pricing-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(143, 230, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: relative;
    transition: transform 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-light);
}

.pricing-card.featured {
    border-color: var(--accent-light);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-light);
    color: var(--primary-dark);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.875rem;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.pricing-header h3 {
    color: var(--accent-light);
    margin-bottom: var(--space-sm);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-lighter);
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    color: var(--text-muted);
}

.pricing-features .fa-check {
    color: var(--accent-teal);
}

.pricing-features .fa-times {
    color: var(--text-muted);
    opacity: 0.5;
}

/* ===== FOOTER ===== */
.footer {
    background: rgba(7, 26, 39, 0.95);
    border-top: 1px solid rgba(143, 230, 255, 0.2);
    padding: var(--space-2xl) 0 var(--space-xl);
}

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

.footer-col h4 {
    color: var(--accent-light);
    margin-bottom: var(--space-lg);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--space-sm);
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--text-lighter);
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--accent-light);
    color: var(--primary-dark);
    transform: translateY(-3px);
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .signals-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-auth {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .features-grid,
    .signals-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}