:root {
    --primary-color: #6f42c1;
    --secondary-color: #581dc6;
    --background-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --heading-color: #0f172a;
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

.links-main-container {
    background: var(--background-color);
    min-height: 100vh;
}

section {
    display: flex;
    flex-direction: column;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

section > h2 {
    font-size: 2rem;
    color: var(--heading-color);
    margin: 2.5rem 0;
    position: relative;
    padding-bottom: 0.5rem;
    text-align: left;
}

section > h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
}

/* Cartes de sujets */
.subject-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 1.5rem 0;
    width: 100%;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.subject-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.subject-container > h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.subject-container > h3::before {
    content: '➤';
    color: var(--secondary-color);
    font-size: 1.1em;
}

/* Liste des liens */
.list {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 1rem;
}

.list li {
    padding: 1rem;
    border-radius: 8px;
    background: rgba(37, 99, 235, 0.03);
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.list li::before {
    content: '🔗';
    color: var(--secondary-color);
    font-size: 0.9em;
}

.list li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    flex-grow: 1;
    position: relative;
}

.list li a:hover {
    color: var(--primary-color);
}

.list li a::after {
    content: '↗';
    margin-left: 0.5rem;
    font-size: 0.9em;
    color: var(--secondary-color);
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.list li a:hover::after {
    opacity: 1;
}

@media (max-width: 768px) {
    section {
        padding: 0 1rem;
    }
    
    section > h2 {
        font-size: 1.75rem;
    }
    
    .subject-container {
        padding: 1.5rem;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.subject-container {
    animation: fadeIn 0.6s ease forwards;
    opacity: 0;
}

.subject-container:nth-child(2) { animation-delay: 0.1s; }
.subject-container:nth-child(3) { animation-delay: 0.2s; }