/* ─── Courses Page ─── */

.courses-section {
    position: relative;
    z-index: 2;
    padding: 48px 0 80px;
}

.courses-header {
    margin-bottom: 32px;
}

.courses-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--ink);
}

.courses-header p {
    color: var(--muted);
    font-size: 1.05rem;
    margin-top: 8px;
}

/* Filters */
.courses-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.courses-filters .form-select {
    max-width: 220px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-md);
    padding: 10px 16px;
    font-family: 'Manrope', sans-serif;
    font-size: 0.9rem;
    color: var(--text);
    background-color: var(--white);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.courses-filters .form-select:focus {
    border-color: var(--ink-soft);
    box-shadow: 0 0 0 3px rgba(36, 79, 159, 0.12);
    outline: none;
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* Course Card */
.courses-grid .card {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px;
    background: var(--white);
    box-shadow: var(--shadow-a);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.courses-grid .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-b);
}

.courses-grid .card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ink);
}

.courses-grid .card p {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Meta row */
.course-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.course-meta-item {
    font-size: 0.82rem;
    color: var(--muted);
    font-weight: 500;
}

/* Difficulty badges */
.difficulty-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 4px 10px;
    border-radius: 20px;
}

.difficulty-badge.beginner {
    background: #e8f5e9;
    color: #2e7d32;
}

.difficulty-badge.intermediate {
    background: #fff3e0;
    color: #e65100;
}

.difficulty-badge.advanced {
    background: #fce4ec;
    color: #c62828;
}

/* Course actions */
.course-card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: 12px;
}

.course-action-btn {
    background: linear-gradient(140deg, #173b84, #2e63c2);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    font-family: 'Eurostile', 'Manrope', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(23, 59, 132, 0.2);
    transition: filter 0.2s, box-shadow 0.2s;
}

.course-action-btn:hover {
    filter: brightness(1.06);
    box-shadow: 0 8px 20px rgba(23, 59, 132, 0.3);
    color: var(--white);
}

.course-action-btn.exam-btn-passed {
    background: linear-gradient(140deg, #1b5e20, #388e3c);
    box-shadow: 0 6px 16px rgba(27, 94, 32, 0.2);
}

.course-action-btn.exam-btn-failed {
    background: linear-gradient(140deg, #b71c1c, #e53935);
    box-shadow: 0 6px 16px rgba(183, 28, 28, 0.2);
}

/* Loading state */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--muted);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--line);
    border-top-color: var(--ink-soft);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Nav user name */
.nav-user-name {
    font-family: 'Manrope', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--ink);
}

/* Active nav link */
.flight-nav a.active {
    color: var(--ink-soft);
    font-weight: 600;
}