/* 
 * ═══════════════════════════════════════════════
 * MODERN PREMIUM BLOG DESIGN SYSTEM
 * ═══════════════════════════════════════════════
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: #818cf8;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    
    /* Neutral Colors */
    --surface-0: #ffffff;
    --surface-50: #f8fafc;
    --surface-100: #f1f5f9;
    --surface-200: #e2e8f0;
    --surface-300: #cbd5e1;
    --surface-400: #94a3b8;
    --surface-500: #64748b;
    --surface-600: #475569;
    --surface-700: #334155;
    --surface-800: #1e293b;
    --surface-900: #0f172a;
    --surface-950: #020617;

    /* Semantic Colors */
    --text-primary: var(--surface-900);
    --text-secondary: var(--surface-600);
    --text-muted: var(--surface-400);
    --bg-main: var(--surface-50);
    --border-subtle: var(--surface-200);
    
    /* Functional Tokens */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-blur: blur(12px);
}

/* ── Base Styles ── */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--surface-900);
}

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

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

/* ── Layout Helpers ── */
.premium-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ── Components ── */

/* Glass Navbar */
.glass-nav {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.glass-nav.scrolled {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-md);
}

/* Premium Card */
.premium-card {
    background: var(--surface-0);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.premium-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.premium-card__img-wrap {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.premium-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.premium-card:hover .premium-card__img {
    transform: scale(1.08);
}

.premium-card__body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.premium-card__badge {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    background: var(--surface-100);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    align-self: flex-start;
}

.premium-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--surface-900);
}

.premium-card__excerpt {
    color: var(--text-secondary);
    font-size: 0.925rem;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.premium-card__footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--surface-100);
    font-size: 0.825rem;
    color: var(--text-muted);
}

/* Modern Button */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    gap: 0.5rem;
}

.btn-premium--primary {
    background: var(--primary);
    color: white;
}

.btn-premium--primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.btn-premium--outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-premium--outline:hover {
    background: var(--primary);
    color: white;
}

/* Glass Widget */
.glass-widget {
    background: var(--surface-0);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
}

.glass-widget__title {
    font-size: 1.1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--surface-100);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Category Pill */
.cat-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--surface-0);
    border: 1px solid var(--surface-200);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--surface-700);
    transition: all 0.2s ease;
}

.cat-pill:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Subtitle/Eyebrow */
.eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 0.5rem;
    display: block;
}

/* ── Animations ── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* ── Dark Mode (Optional Support) ── */
@media (prefers-color-scheme: dark) {
    /* We can implement full dark mode here if desired */
}