/* UpMails.eu CSS - Updated for header/footer system */

:root {
    --bg: #0D1B2A;
    --text: #ffffff;
    --card-bg: #112A3F;
    --border: #1B3A4B;
    --primary: #007bff;
    --secondary: #4CAF50;
    --accent: #F52750;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 2;
}

/* Header Styles */
header {
    padding: 2rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 1.2rem;
    opacity: 0.8;
    margin-bottom: 2rem;
}

/* Navigation */
nav ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    list-style: none;
    margin-top: 1.5rem;
}

nav a {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

nav a:hover,
nav a.active {
    background: var(--primary);
    border-color: var(--primary);
}

/* Main Content */
main {
    padding: 2rem 0;
    min-height: 60vh;
}

/* Footer */
footer {
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border);
    margin-top: 3rem;
    padding: 3rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: #888;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--primary);
}

/* Cards & Buttons */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    width: 0%;
    z-index: 1000;
    transition: width 0.1s ease;
}

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

/* Theme Toggle */
.theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    nav a {
        display: block;
        width: 100%;
        text-align: center;
        padding: 0.75rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .theme-toggle {
        top: 0.5rem;
        right: 0.5rem;
    }
}

/* Light Theme */
body.light-theme {
    --bg: #ffffff;
    --text: #333333;
    --card-bg: #f8f9fa;
    --border: #dee2e6;
    --primary: #007bff;
    --secondary: #28a745;
    --accent: #dc3545;
}