/* Global Theme System - CSS Variables */
:root {
    /* Dark Mode Colors */
    --bg-primary-dark: #000000;
    --bg-secondary-dark: #1a1a1a;
    --bg-tertiary-dark: #0d0d0d;
    --text-primary-dark: #ffffff;
    --text-secondary-dark: #d1d5db;
    --text-tertiary-dark: #9ca3af;
    --border-dark: #374151;
    --card-bg-dark: rgba(0, 0, 0, 0.6);
    
    /* Light Mode Colors */
    --bg-primary-light: #ffffff;
    --bg-secondary-light: #f5f5f5;
    --bg-tertiary-light: #f0f0f0;
    --text-primary-light: #1a1a1a;
    --text-secondary-light: #4a4a4a;
    --text-tertiary-light: #6a6a6a;
    --border-light: #e0e0e0;
    --card-bg-light: rgba(255, 255, 255, 0.9);
    
    /* Accent Colors (same for both modes) */
    --accent-primary: #dc2626;
    --accent-secondary: #3b82f6;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
}

/* Default Dark Mode */
body {
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --bg-tertiary: var(--bg-tertiary-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-tertiary: var(--text-tertiary-dark);
    --border-color: var(--border-dark);
    --card-bg: var(--card-bg-dark);
    
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Light Mode */
body.light-mode {
    --bg-primary: var(--bg-primary-light);
    --bg-secondary: var(--bg-secondary-light);
    --bg-tertiary: var(--bg-tertiary-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --text-tertiary: var(--text-tertiary-light);
    --border-color: var(--border-light);
    --card-bg: var(--card-bg-light);
}

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

body {
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}

/* Navbar */
nav {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

/* Sections */
section {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Cards */
.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.stat-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Footer */
footer {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.bg-dark-400 {
    background: var(--bg-secondary);
}

.bg-dark-500 {
    background: var(--bg-tertiary);
}

/* Text Colors */
.text-primary {
    color: var(--text-primary);
}

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

.text-tertiary {
    color: var(--text-tertiary);
}

/* Borders */
.border-color {
    border-color: var(--border-color);
}

/* Hero Background */
.hero-bg {
    background: linear-gradient(to bottom, var(--bg-primary), var(--bg-secondary)), 
                url('https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?w=1920') center/cover;
    min-height: 100vh;
    position: relative;
}

body.light-mode .hero-bg {
    background: linear-gradient(to bottom, rgba(255,255,255,0.95), rgba(245,245,245,0.95)), 
                url('https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?w=1920') center/cover;
}

/* Transaction Scroll Animation */
.scroll-container {
    height: 400px;
    overflow: hidden;
    position: relative;
}

.scroll-content {
    animation: scroll 30s linear infinite;
}

.scroll-content:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% { transform: translateY(0); }
    100% { transform: translateY(-50%); }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}