/* εγσίας/styles.css */
/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: #f7fafc;
    scroll-behavior: smooth;
}

/* Modern Layout */
.container {
    max-width: 1120px;
    margin: auto;
    padding: 2rem;
}

/* Typography Hierarchy */
h1, h2, h3 {
    color: #2b6cb0;
    margin-bottom: 1rem;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    border-bottom: 3px solid #a0c4fd;
    padding-bottom: 0.5rem;
}

/* Glassmorphism Card */
.card {
    background: rgba(255, 255, 255, 0.75);
    border-radius: 1rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    margin: 2rem 0;
}

/* Interactive Elements */
.button {
    display: inline-block;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.button.primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Responsive Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #fff2f2;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav a {
    color: #e33424;
    font-weight: 500;
    margin: 0 1rem;
    text-decoration: none;
    transition: color 0.3s;
}

nav a:hover {
    color: #f56565;
    text-shadow: 0 0 5px rgba(227, 52, 36, 0.3);
}

/* Footer Styles */
footer {
    background: #edf2f7;
    padding: 3rem 2rem;
    text-align: center;
    opacity: 0.95;
}

footer a {
    color: #3182ce;
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s;
}

footer a:hover {
    color: #4299e1;
}

/* Modern Loading Animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.loader {
    border: 3px solid #cbd5e0;
    border-top: 3px solid #4299e1;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dark Mode Toggle */
.dark-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    padding: 0.75rem 1.5rem;
    border-radius: 1rem;
    background: rgba(0,0,0,0.7);
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

.dark-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}