/* Base Styles and Layout */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 400;
    transition: all 0.3s ease;
    min-height: 100vh;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: var(--space-xl) 0;
    box-shadow: var(--shadow-lg);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
}

.header-info h1 {
    font-size: 2.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space);
}

.header-info p {
    font-size: 1.125rem;
}

.version-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    opacity: 0.9;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-xl);
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--space-xl);
    align-items: start;
}

/* Grid Layout - Centered when logged out */
.grid.centered {
    grid-template-columns: 1fr;
    justify-items: center;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.05); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    animation: shimmer 2s infinite;
    background: linear-gradient(
        90deg,
        var(--surface) 0%,
        var(--surface-hover) 50%,
        var(--surface) 100%
    );
    background-size: 1000px 100%;
}

.fade-in {
    animation: slideInUp 0.5s ease-out;
}

.slide-in {
    animation: slideInLeft 0.3s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .grid {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--space);
        text-align: center;
    }
    
    .header-info {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--space);
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
}