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

:root {
    /* Light Theme Variables */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-secondary: #10b981;
    --accent-danger: #ef4444;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #047857 100%);
    --terminal-bg: #1e293b;
    --terminal-text: #f1f5f9;
    --card-radius: 12px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --accent-primary: #60a5fa;
    --accent-secondary: #34d399;
    --accent-danger: #f87171;
    --border-color: #475569;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #34d399 0%, #10b981 100%);
    --terminal-bg: #0f172a;
    --terminal-text: #f8fafc;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
}

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

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    border: none;
    font-family: 'Inter', sans-serif;
}

.btn i {
    font-size: 1rem;
}

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

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

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-text {
    color: var(--text-primary);
}

.logo-dex {
    color: var(--accent-primary);
    font-family: 'JetBrains Mono', monospace;
}

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px 3px 0 0;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
}

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

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.mobile-menu.active {
    display: flex;
}

.mobile-nav-link {
    padding: 12px 0;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:last-child {
    border-bottom: none;
}

.mobile-nav-link:hover {
    color: var(--accent-primary);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

.hero-title-main {
    display: block;
    color: var(--text-primary);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 3rem;
}

@media (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
    }
}

.hero-stats {
    display: flex;
    gap: 32px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: 'JetBrains Mono', monospace;
}

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

.trading-terminal {
    background-color: var(--terminal-bg);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.terminal-tabs {
    display: flex;
    gap: 16px;
}

.terminal-tab {
    color: var(--terminal-text);
    opacity: 0.7;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.terminal-tab.active {
    opacity: 1;
    font-weight: 600;
}

.terminal-tab:hover {
    opacity: 1;
}

.terminal-action {
    color: var(--terminal-text);
    opacity: 0.7;
    cursor: pointer;
    transition: var(--transition);
}

.terminal-action:hover {
    opacity: 1;
}

.terminal-chart {
    height: 280px;
    padding: 20px;
    position: relative;
}

.terminal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background-color: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.price-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
}

.price-label {
    color: var(--terminal-text);
    font-weight: 600;
    font-size: 0.875rem;
}

.price-value {
    color: var(--terminal-text);
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.price-change {
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
}

.price-change.positive {
    color: var(--accent-secondary);
}

.timeframe-selector {
    display: flex;
    gap: 8px;
}

.timeframe {
    color: var(--terminal-text);
    opacity: 0.7;
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.timeframe.active {
    opacity: 1;
    background-color: rgba(59, 130, 246, 0.2);
}

.timeframe:hover {
    opacity: 1;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--bg-tertiary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.feature-card {
    background-color: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: white;
    font-size: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
}

/* Courses Section */
.courses {
    padding: 80px 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.course-card {
    background-color: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.course-level {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 16px;
    align-self: flex-start;
}

.course-level.beginner {
    background-color: rgba(34, 197, 94, 0.1);
    color: var(--accent-secondary);
}

.course-level.intermediate {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
}

.course-level.advanced {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
}

.course-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.course-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    flex-grow: 1;
}

.course-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 24px;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.course-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.course-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--accent-primary);
    font-weight: 600;
    transition: var(--transition);
}

.course-link:hover {
    gap: 12px;
}

/* Simulator Teaser */
.simulator-teaser {
    padding: 80px 0;
    background: var(--gradient-primary);
    color: white;
}

.simulator-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.simulator-teaser .section-title,
.simulator-teaser .section-subtitle {
    color: white;
}

.simulator-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.simulator-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.simulator-feature i {
    font-size: 1.25rem;
}

.simulator-note {
    margin-top: 24px;
    opacity: 0.9;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Glossary Preview */
.glossary-preview {
    padding: 80px 0;
    background-color: var(--bg-tertiary);
}

.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.glossary-term {
    background-color: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.term-name {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--accent-primary);
}

.term-definition {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding-top: 64px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 64px;
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-tagline {
    color: var(--text-secondary);
    margin: 16px 0 24px;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--accent-primary);
    color: white;
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

@media (max-width: 992px) {
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-links {
        grid-template-columns: 1fr;
    }
}

.footer-link-title {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-link-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.footer-bottom {
    background-color: var(--bg-tertiary);
    padding: 32px 0;
}

.footer-bottom-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-disclaimer {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 16px;
    padding: 16px;
    background-color: rgba(239, 68, 68, 0.1);
    border-radius: 8px;
    border-left: 4px solid var(--accent-danger);
}

.footer-disclaimer i {
    color: var(--accent-danger);
    margin-top: 2px;
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    text-align: center;
}