/* MCWAI Archive - Common Styles
 * Version: 1.0
 * This file contains shared styles used across all pages
 */

/* ============================================
   CSS Variables (Theme Support)
   ============================================ */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-card: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-color: #667eea;
    --accent-hover: #5a6fd6;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    --footer-bg: #1a1a1a;
    --footer-text: #999999;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
}

/* Dark Theme - NO BLUE gradient, use subtle dark gradient instead */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --bg-card: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #404040;
    --accent-color: #a78bfa;
    --accent-hover: #8b5cf6;
    --gradient-start: #4a4a4a;
    --gradient-end: #3a3a3a;
    --footer-bg: #0a0a0a;
    --footer-text: #808080;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    line-height: 1.6;
}

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

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

/* ============================================
   Top Navigation
   ============================================ */
.top-nav {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.top-nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
}

.logo:hover {
    color: var(--accent-hover);
}

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    padding: 5px 0;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.nav-links a.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

.username {
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Theme Toggle
   ============================================ */
.theme-toggle {
    background: var(--bg-secondary);
    border: none;
    padding: 8px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background 0.2s;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
}

.btn-danger:hover {
    background: #dc3545;
    color: white;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s;
    text-decoration: none;
}

.back-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.logout-btn {
    background: rgba(220, 53, 69, 0.1);
    border: none;
    color: #dc3545;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.logout-btn:hover {
    background: #dc3545;
    color: white;
}

/* ============================================
   Hero Section (Light theme keeps gradient, Dark theme is subtle)
   ============================================ */
.header, .hero {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    padding: 40px 20px;
}

[data-theme="dark"] .header,
[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    border-bottom: 1px solid var(--border-color);
}

.header-content, .hero-content {
    max-width: 1200px;
    margin: 0 auto;
}

.header h1, .hero h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header p, .hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.2s;
}

.card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* ============================================
   Footer
   ============================================ */
footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 30px 20px;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    margin-bottom: 15px;
}

.footer-links a {
    color: var(--footer-text);
    margin: 0 15px;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-theme-toggle {
    background: transparent;
    border: 1px solid var(--footer-text);
    color: var(--footer-text);
    padding: 5px 12px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
    margin-top: 10px;
}

.footer-theme-toggle:hover {
    border-color: white;
    color: white;
}

/* ============================================
   Image Lightbox Modal
   ============================================ */
.lightbox-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
}

.lightbox-overlay.active {
    display: flex;
}

.lightbox-image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
    z-index: 10001;
}

.lightbox-close:hover {
    color: #ccc;
}

/* Make images in content clickable */
.message-content img,
.content img:not(.no-lightbox) {
    cursor: zoom-in;
    transition: transform 0.2s;
}

.message-content img:hover,
.content img:not(.no-lightbox):hover {
    transform: scale(1.02);
}

/* ============================================
   Error & Success States
   ============================================ */
.error-container {
    text-align: center;
    padding: 60px 20px;
}

.error-container h2 {
    color: var(--error-color);
    margin-bottom: 10px;
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* ============================================
   Loading States
   ============================================ */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 768px) {
    .nav-links {
        gap: 15px;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    .header h1, .hero h1 {
        font-size: 1.8rem;
    }

    .top-nav-content {
        flex-wrap: wrap;
        gap: 10px;
    }

    .user-menu {
        width: 100%;
        justify-content: flex-end;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 10px;
        font-size: 0.85rem;
    }

    .footer-links a {
        display: block;
        margin: 10px 0;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.hidden { display: none !important; }