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

:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --bg-color: #f4f7fe;
    --text-main: #2b3674;
    --text-muted: #a3aed1;
    --card-bg: #ffffff;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Navbar */
.navbar-custom {
    background-color: var(--card-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
}
.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #4cc9f0 100%);
    padding: 5rem 0;
    color: white;
    border-radius: 0 0 2rem 2rem;
    margin-bottom: -3rem;
    position: relative;
    z-index: 1;
}

/* Cards */
.premium-card {
    background: var(--card-bg);
    border: none;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}
.premium-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(67, 97, 238, 0.1);
}

/* MCQ Options */
.mcq-option {
    display: block;
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
    font-weight: 500;
}
.mcq-option:hover {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.02);
}
.mcq-option.correct-show {
    border-color: var(--success-color);
    background-color: rgba(16, 185, 129, 0.05);
    color: #047857;
}

/* Buttons */
.btn-premium {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    border-radius: 8px;
    padding: 0.6rem 1.5rem;
    border: none;
    transition: all 0.2s;
}
.btn-premium:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
}

.btn-outline-premium {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
    border-radius: 8px;
    padding: 0.5rem 1.5rem;
    transition: all 0.2s;
}
.btn-outline-premium:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Utilities */
.badge-soft-primary {
    background-color: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}
.content-wrapper {
    position: relative;
    z-index: 2;
}
/* Interactive MCQ Options */
.interactive-option {
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    background-color: #ffffff;
}
.interactive-option:hover {
    background-color: #f8f9fa;
    border-color: #0d6efd !important;
}
.interactive-option.correct {
    background-color: #d1e7dd !important;
    border-color: #198754 !important;
    color: #0f5132;
}
.interactive-option.wrong {
    background-color: #f8d7da !important;
    border-color: #dc3545 !important;
    color: #842029;
}
.interactive-option.disabled {
    pointer-events: none;
}