/* DrTOEIC Custom Styles */
:root {
    --primary-color: #0056b3;
    --secondary-color: #6c757d;
    --accent-color: #ffc107;
    --text-color: #212529;
    --bg-light: #f8f9fa;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

/* Semantic Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Navigation */
.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/hero-home.png');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
}

/* Card Styling */
.card {
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-5px);
}

/* Footer */
footer {
    background-color: #343a40;
    color: white;
    padding: 3rem 0;
}

footer a {
    color: #adb5bd;
    text-decoration: none;
}

footer a:hover {
    color: white;
}