/*
Theme Name: MDCAT Online Theme
Theme URI: https://mdcat.online
Description: A premium, fast, mobile-first block theme designed specifically for MDCAT practice, featuring modern dark mode aesthetics, glassmorphism, and interactive quiz taking.
Version: 1.0.0
Author: Antigravity AI
Text Domain: mdcat-theme
*/

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

/* --- Core Design Tokens --- */
:root {
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Theme Colors (Deep space dark & vibrant electric blue/purple) */
    --color-bg-deep: #0b0f19;
    --color-bg-dark: #121824;
    --color-bg-card: #1e2640;
    --color-primary: #3b82f6; /* Vibrant Blue */
    --color-primary-glow: rgba(59, 130, 246, 0.15);
    --color-accent: #8b5cf6; /* Electric Violet */
    --color-accent-glow: rgba(139, 92, 246, 0.15);
    
    --color-success: #10b981; /* Green */
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-error: #ef4444; /* Coral/Red */
    --color-error-bg: rgba(239, 68, 68, 0.1);
    --color-warning: #f59e0b; /* Amber */
    --color-warning-bg: rgba(245, 158, 11, 0.1);

    --color-text-white: #ffffff;
    --color-text-muted: #9ca3af;
    --color-text-dim: #6b7280;

    --border-color: rgba(255, 255, 255, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-premium: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
    --glass-bg: rgba(18, 24, 36, 0.75);
    --glass-border: rgba(255, 255, 255, 0.06);
}

/* --- Base Resets & Typography --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-bg-deep);
    color: var(--color-text-white);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text-white);
    line-height: 1.25;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

/* --- Layout Utility Classes --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Premium Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
    font-size: 15px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: var(--color-text-white);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--color-text-white);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

/* --- Glassmorphic Cards --- */
.card-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}

.card-glass:hover {
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-3px);
}

/* --- Navigation Header --- */
.site-header {
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--color-text-muted);
    font-weight: 500;
}

.nav-links a:hover, .nav-links .active a {
    color: var(--color-text-white);
}

/* --- Heart & Streak Badges --- */
.stat-badges {
    display: flex;
    align-items: center;
    gap: 16px;
}

.badge-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
}

.badge-heart {
    color: var(--color-error);
    border-color: rgba(239, 68, 68, 0.2);
}

.badge-streak {
    color: var(--color-warning);
    border-color: rgba(245, 158, 11, 0.2);
}

/* --- Spinner Animation --- */
@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}
.fa-spin {
    animation: spin 1s linear infinite;
}