/* ===================================
   CHANGELOG PAGE STYLES
   =================================== */

/* Google Font - Bona Nova */
@import url('https://fonts.googleapis.com/css2?family=Bona+Nova:wght@400&display=swap');

/* Logo title styling */
.logo {
    text-decoration: none !important;
}

.logo:hover {
    text-decoration: none !important;
}

.logo-title {
    font-family: 'Bona Nova', serif;
    font-weight: 400;
    display: inline-flex;
    align-items: baseline;
    text-decoration: none !important;
}

.logo-title .ai-text {
    color: #000000;
    font-size: 2.2rem;
}

.logo-title .mode-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.2rem;
}

.logo-title .qs-text {
    color: #000000;
    font-size: 1.5rem;
    margin-left: 0.4em;
}

.logo .ai-stars {
    color: #667eea;
    font-size: 1.9rem;
    margin-right: 0.5rem;
    text-decoration: none !important;
}

/* Nav active link */
.nav-links a.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 5px 0;
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-menu-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* Mobile Menu Panel */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    z-index: 1000;
    padding: var(--spacing-xl) var(--spacing-md);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    overflow-y: auto;
}

.mobile-menu.show {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-menu-links a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.mobile-menu-links a:hover,
.mobile-menu-links a.active {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.mobile-menu-links a i {
    width: 20px;
    color: var(--primary-color);
}

.mobile-menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-md) 0;
}

.mobile-menu-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.mobile-lang-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.mobile-lang-list a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.mobile-lang-list a:hover {
    background: var(--bg-secondary);
}

.mobile-lang-list a.active {
    background: var(--primary-light);
    color: white;
}

.mobile-lang-list .flag {
    font-size: 1.25rem;
}

/* Footer logo styling */
.footer-brand .logo .ai-stars {
    font-size: 1.3rem;
}

.footer-brand .logo-title .ai-text {
    color: #ffffff;
    font-size: 1.4rem;
}

.footer-brand .logo-title .mode-text {
    font-size: 1.4rem;
}

.footer-brand .logo-title .qs-text {
    color: #ffffff;
    font-size: 1.1rem;
}

/* ===================================
   STICKY HERO SECTION
   =================================== */
.changelog-hero {
    position: sticky;
    top: 73px; /* Below header */
    z-index: 100;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-sm);
}

.changelog-hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.changelog-hero-text h1 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.changelog-hero-text h1 i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.changelog-hero-text p {
    font-size: 0.95rem;
    margin: 0;
    color: var(--text-secondary);
}

.changelog-hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* ===================================
   MAIN LAYOUT WITH SIDEBAR
   =================================== */
.changelog-main {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
    background-color: var(--bg-primary);
    min-height: 60vh;
}

.changelog-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* ===================================
   STICKY SIDEBAR
   =================================== */
.changelog-sidebar {
    position: sticky;
    top: 180px; /* Below header + hero */
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}

.changelog-nav {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.changelog-nav h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}

.changelog-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-nav li {
    margin-bottom: var(--spacing-xs);
}

.sidebar-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
}

.sidebar-link:hover {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.sidebar-link.active {
    color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.1);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

/* ===================================
   CHANGELOG CONTENT
   =================================== */
.changelog-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* ===================================
   CHANGELOG CARDS
   =================================== */
.changelog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.changelog-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.changelog-card-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.changelog-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.date-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.date-badge i {
    color: var(--primary-color);
}

.version-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.changelog-card-header h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.changelog-summary {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
}

.changelog-card-body {
    padding: var(--spacing-lg);
}

/* ===================================
   CHANGELOG SECTIONS
   =================================== */
.changelog-section {
    margin-bottom: var(--spacing-lg);
}

.changelog-section:last-child {
    margin-bottom: 0;
}

.changelog-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}

.changelog-section h3 i {
    font-size: 0.9rem;
}

/* Icon colors for different section types */
.changelog-section h3 i.fa-star {
    color: #f59e0b; /* New Features - amber */
}

.changelog-section h3 i.fa-wrench {
    color: var(--primary-color); /* Improvements */
}

.changelog-section h3 i.fa-bug {
    color: #ef4444; /* Bug Fixes - red */
}

.changelog-section h3 i.fa-rocket {
    color: #10b981; /* Launch - green */
}

.changelog-section h3 i.fa-youtube {
    color: #ff0000; /* YouTube */
}

.changelog-section h3 i.fa-amazon {
    color: #ff9900; /* Amazon */
}

.changelog-section h3 i.fa-globe {
    color: var(--primary-color); /* Multilingual */
}

.changelog-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-section li {
    position: relative;
    padding: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.changelog-section li::before {
    content: "•";
    position: absolute;
    left: var(--spacing-xs);
    color: var(--primary-color);
    font-weight: bold;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 900px) {
    .changelog-layout {
        grid-template-columns: 1fr;
    }
    
    .changelog-sidebar {
        position: relative;
        top: 0;
        max-height: none;
        order: -1;
    }
    
    .changelog-nav ul {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .changelog-nav li {
        margin-bottom: 0;
    }
    
    .sidebar-link {
        border-left: none;
        border-bottom: 2px solid transparent;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .sidebar-link.active {
        border-left: none;
        border-bottom-color: var(--primary-color);
    }
}

@media (max-width: 768px) {
    .changelog-hero {
        position: relative;
        top: 0;
    }
    
    .changelog-hero-content {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .changelog-hero-text h1 {
        font-size: 1.5rem;
    }
    
    .changelog-hero-buttons {
        width: 100%;
        justify-content: flex-start;
    }
    
    .changelog-card-header h2 {
        font-size: 1.25rem;
    }
    
    .changelog-date {
        flex-direction: column;
        align-items: flex-start;
    }
    
    /* Logo responsive - 768px */
    .logo .ai-stars {
        font-size: 1.4rem;
        margin-right: 0.3rem;
    }
    
    .logo-title .ai-text,
    .logo-title .mode-text {
        font-size: 1.6rem;
    }
    
    .logo-title .qs-text {
        font-size: 1.1rem;
        margin-left: 0.3em;
    }
}

@media (max-width: 700px) {
    /* Show mobile menu, hide desktop nav */
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-menu,
    .mobile-menu-overlay {
        display: block;
    }
    
    .logo-title .qs-text {
        display: none;
    }
    
    .logo .ai-stars {
        font-size: 1.3rem;
    }
    
    .logo-title .ai-text,
    .logo-title .mode-text {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .changelog-hero-buttons .btn {
        flex: 1;
        justify-content: center;
    }
    
    .changelog-main {
        padding: var(--spacing-lg) 0;
    }
    
    .changelog-card-header,
    .changelog-card-body {
        padding: var(--spacing-md);
    }
    
    /* Logo responsive - 480px */
    .logo .ai-stars {
        font-size: 1.2rem;
        margin-right: 0.2rem;
    }
    
    .logo-title .ai-text,
    .logo-title .mode-text {
        font-size: 1.3rem;
    }
    
    .logo-title .qs-text {
        display: none;
    }
}