/* Echo News - Cybercore Glass Theme */
:root {
    /* Cybercore Color Palette */
    --primary-cyan: #00d9ff;
    --primary-purple: #8b5cf6;
    --primary-pink: #f471b5;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    
    /* Glass Effect Colors */
    --glass-bg: rgba(15, 23, 42, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Dark Theme Base */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d9ff 0%, #8b5cf6 50%, #f471b5 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(244, 113, 181, 0.05) 0%, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Glass Effect Base */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    border-radius: 16px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 10px var(--primary-cyan));
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-cyan);
    background: rgba(0, 217, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
}

.nav-link.active {
    color: var(--primary-cyan);
    background: rgba(0, 217, 255, 0.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
}

/* Main Content */
.main-content {
    margin-top: 120px;
    padding: 2rem;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 1rem;
    }
    
    .nav-container {
        padding: 0.75rem 1rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .main-content {
        margin-top: 100px;
        padding: 1rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-cyan);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Glow effects */
.glow-cyan {
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.glow-purple {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.glow-pink {
    box-shadow: 0 0 20px rgba(244, 113, 181, 0.3);
}

/* Search Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.search-container {
    max-width: 600px;
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
}

.search-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.search-header h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-cyan);
}

.search-body {
    padding: 2rem;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-results {
    margin-top: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

/* Sections */
.news-section, .trending-section, .category-section {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* Footer */
.footer {
    margin-top: 4rem;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    padding: 3rem;
    border-radius: 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.footer-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 10px var(--primary-cyan));
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.social-link:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary-cyan);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 217, 255, 0.3);
}

.footer-title {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--primary-cyan);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.footer-links {
    list-style: none;
}

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

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.footer-link:hover {
    color: var(--primary-cyan);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
}

.footer-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-dot.online {
    background: var(--accent-green);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    animation: pulse 2s infinite;
}

.footer-version {
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    color: var(--primary-cyan);
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
}

.back-to-top:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary-cyan);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 217, 255, 0.3);
}

/* Alert Messages */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    border: 1px solid;
    backdrop-filter: blur(10px);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #ef4444;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: #f59e0b;
    color: #f59e0b;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
}

/* Light Theme Styles (for future implementation) */
.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #e2e8f0;
    --bg-tertiary: #cbd5e1;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.1);
}

.light-theme body {
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(0, 217, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(244, 113, 181, 0.03) 0%, transparent 50%);
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-bottom-content {
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 1rem;
    }
    
    .nav-container {
        padding: 0.75rem 1rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .mobile-menu-btn {
        display: inline-flex;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .main-content {
        margin-top: 100px;
        padding: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .search-modal {
        padding: 1rem;
    }
    
    .search-body {
        padding: 1.5rem;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Navbar scroll effects */
.navbar.scrolled .nav-container {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(0, 217, 255, 0.2);
}

/* Loading states */
.loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-cyan);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Header Navigation Styles */
.nav-icon, .btn-icon {
    margin-right: 0.5rem;
    font-size: 1rem;
    vertical-align: middle;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.nav-brand .brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary, #fff);
    font-weight: 600;
    font-size: 1.2rem;
}

.brand-icon {
    margin-right: 0.5rem;
    font-size: 1.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-primary, #fff);
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0 0.25rem;
    white-space: nowrap;
    font-size: 0.9rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover, .nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-cyan, #00d9ff);
}

.nav-link.active .nav-icon {
    color: var(--primary-cyan, #00d9ff);
}

.nav-actions {
    display: flex;
    align-items: center;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary, #fff);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-icon {
    margin-right: 0;
}

@media (max-width: 768px) {
    .nav {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .nav-menu {
        order: 3;
        width: 100%;
        justify-content: center;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
    }
}