:root {
    --jrs-primary: #3498db;
    --jrs-secondary: #2ecc71;
    --jrs-dark: #2c3e50;
    --jrs-light: #ecf0f1;
    --jrs-white: #ffffff;
    --jrs-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --jrs-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
    --jrs-radius: 12px;
    --jrs-transition: all 0.3s ease;
}

.jrs-schedule-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.jrs-filters {
    background: var(--jrs-white);
    border-radius: var(--jrs-radius);
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--jrs-shadow);
}

.jrs-filter-group {
    margin-bottom: 20px;
}

.jrs-filter-group:last-child {
    margin-bottom: 0;
}

.jrs-filter-label {
    display: block;
    font-weight: 600;
    color: var(--jrs-dark);
    margin-bottom: 12px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.jrs-day-filters,
.jrs-category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.jrs-filter-btn,
.jrs-category-btn {
    padding: 10px 18px;
    border: 2px solid var(--jrs-light);
    background: var(--jrs-white);
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--jrs-dark);
    transition: var(--jrs-transition);
}

.jrs-filter-btn:hover,
.jrs-category-btn:hover {
    border-color: var(--jrs-primary);
    color: var(--jrs-primary);
}

.jrs-filter-btn.active {
    background: var(--jrs-primary);
    border-color: var(--jrs-primary);
    color: var(--jrs-white);
}

.jrs-category-btn.active {
    background: var(--cat-color, var(--jrs-primary));
    border-color: var(--cat-color, var(--jrs-primary));
    color: var(--jrs-white);
}

.jrs-age-select {
    padding: 12px 20px;
    border: 2px solid var(--jrs-light);
    border-radius: 25px;
    font-size: 14px;
    color: var(--jrs-dark);
    background: var(--jrs-white);
    min-width: 200px;
    cursor: pointer;
    transition: var(--jrs-transition);
}

.jrs-age-select:hover,
.jrs-age-select:focus {
    border-color: var(--jrs-primary);
    outline: none;
}

.jrs-classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.jrs-class-card {
    background: var(--jrs-white);
    border-radius: var(--jrs-radius);
    padding: 25px;
    box-shadow: var(--jrs-shadow);
    transition: var(--jrs-transition);
    border-top: 4px solid var(--card-color, var(--jrs-primary));
    position: relative;
    overflow: visible;
}

.jrs-class-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(135deg, var(--card-color) 0%, transparent 100%);
    opacity: 0.03;
    pointer-events: none;
}

.jrs-class-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--jrs-shadow-hover);
}

.jrs-class-card.hidden {
    display: none;
}

.jrs-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.jrs-category-badge {
    display: inline-block;
    padding: 5px 12px;
    background: var(--card-color, var(--jrs-primary));
    color: var(--jrs-white);
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.jrs-day-badge {
    display: inline-block;
    padding: 5px 12px;
    background: var(--jrs-light);
    color: var(--jrs-dark);
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

.jrs-class-name {
    margin: 0 0 20px 0;
    font-size: 20px;
    font-weight: 700;
    color: var(--jrs-dark);
    line-height: 1.3;
}

.jrs-class-details {
    margin-bottom: 20px;
}

.jrs-detail {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: #666;
    font-size: 14px;
    border-bottom: 1px solid var(--jrs-light);
}

.jrs-detail:last-child {
    border-bottom: none;
}

.jrs-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.jrs-register-btn {
    display: block;
    width: 100%;
    padding: 14px 20px;
    background: var(--card-color, var(--jrs-primary));
    color: var(--jrs-white) !important;
    text-align: center;
    text-decoration: none !important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--jrs-transition);
    border: none;
    cursor: pointer;
}

.jrs-register-btn:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
}

.jrs-hover-hint {
    text-align: center;
    font-size: 0.75rem;
    color: #999;
    margin: 10px 0;
    font-style: italic;
    transition: opacity 0.3s ease;
}

.jrs-description-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 320px;
    max-width: 90vw;
    background: #1e3a5f;
    color: white;
    padding: 18px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.35);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    pointer-events: none;
}

.jrs-description-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 12px solid transparent;
    border-top-color: #1e3a5f;
}

.jrs-class-card:hover .jrs-description-tooltip {
    opacity: 1;
    visibility: visible;
    bottom: calc(100% + 12px);
}

.jrs-class-card:hover .jrs-hover-hint {
    opacity: 0;
}

.jrs-tooltip-content strong {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: #ffeb3b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.jrs-tooltip-content p {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #e8e8e8;
}

.jrs-intro-section {
    max-width: 1000px;
    margin: 0 auto 30px;
    text-align: center;
}

.jrs-intro-text {
    font-size: 1.1rem;
    color: #444;
    margin-bottom: 15px;
    line-height: 1.8;
}

.jrs-intro-text strong {
    color: #1e3a5f;
}

.jrs-enrollment-note {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-left: 4px solid #ff9800;
    padding: 20px 25px;
    margin-top: 25px;
    text-align: left;
    border-radius: 0 8px 8px 0;
    font-size: 0.95rem;
    color: #5d4037;
}

.jrs-enrollment-note strong {
    color: #e65100;
}

.jrs-no-classes,
.jrs-no-results,
.jrs-loading,
.jrs-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    background: var(--jrs-white);
    border-radius: var(--jrs-radius);
    box-shadow: var(--jrs-shadow);
}

.jrs-no-classes p,
.jrs-no-results p,
.jrs-loading p,
.jrs-error p {
    color: #666;
    font-size: 18px;
    margin: 0;
}

.jrs-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.jrs-loading::before {
    content: '';
    width: 40px;
    height: 40px;
    border: 4px solid #e0e0e0;
    border-top-color: #1e3a5f;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.jrs-error {
    background: #fff5f5;
    border: 1px solid #ffcdd2;
}

.jrs-error p {
    color: #c62828;
}

@media (max-width: 768px) {
    .jrs-schedule-container {
        padding: 15px;
    }
    
    .jrs-filters {
        padding: 20px;
    }
    
    .jrs-day-filters,
    .jrs-category-filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
    }
    
    .jrs-filter-btn,
    .jrs-category-btn {
        flex-shrink: 0;
        padding: 8px 14px;
        font-size: 13px;
    }
    
    .jrs-classes-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .jrs-class-card {
        padding: 20px;
    }
    
    .jrs-class-name {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .jrs-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .jrs-age-select {
        width: 100%;
    }
}

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

.jrs-class-card {
    animation: fadeIn 0.4s ease forwards;
}

.jrs-class-card:nth-child(1) { animation-delay: 0.05s; }
.jrs-class-card:nth-child(2) { animation-delay: 0.1s; }
.jrs-class-card:nth-child(3) { animation-delay: 0.15s; }
.jrs-class-card:nth-child(4) { animation-delay: 0.2s; }
.jrs-class-card:nth-child(5) { animation-delay: 0.25s; }
.jrs-class-card:nth-child(6) { animation-delay: 0.3s; }