/* ============================================
   CHING MO - Classes Page Stylesheet
   Rebuilt: 2024
   ============================================ */

/* ===== PAGE HERO ===== */
.page-hero {
    position: relative;
    min-height: 380px;
    display: flex;
    align-items: flex-end;
    background: url('/images/classes-hero.webp') center/cover no-repeat;
    padding-bottom: var(--space-2xl);
    margin-top: var(--header-height);
}

.page-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(26, 26, 46, 0.6) 0%,
        rgba(26, 26, 46, 0.92) 100%
    );
    z-index: 1;
}

.page-hero-content {
    position: relative;
    z-index: 2;
    color: var(--color-white);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
    margin-bottom: var(--space-md);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    padding: 0;
    margin: 0;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-accent);
}

.breadcrumb-sep {
    color: rgba(255, 255, 255, 0.3);
}

.breadcrumb [aria-current="page"] {
    color: var(--color-accent);
    font-weight: 500;
}

.page-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.page-hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    line-height: 1.7;
}

/* ===== QUICK NAV ===== */
.classes-quick-nav {
    background: var(--color-secondary);
    padding: var(--space-md) 0;
    position: sticky;
    top: var(--header-height);
    z-index: 900;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.quick-nav-inner {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 2px;
}

.quick-nav-inner::-webkit-scrollbar {
    display: none;
}

.quick-nav-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    white-space: nowrap;
    flex-shrink: 0;
}

.quick-nav-list {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: nowrap;
}

.quick-nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.45rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.12);
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.quick-nav-link:hover,
.quick-nav-link.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.quick-nav-icon {
    font-size: 1rem;
    line-height: 1;
}

/* ===== INTRO SECTION ===== */
.classes-intro {
    background: var(--color-off-white);
}

.classes-intro-grid {
    display: grid;
    gap: var(--space-xl);
    align-items: start;
}

@media (min-width: 768px) {
    .classes-intro-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
        gap: var(--space-2xl);
    }
}

.classes-intro-text h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.classes-intro-text .lead {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.classes-intro-text p {
    color: var(--color-grey);
    line-height: 1.8;
}

/* Stats */
.classes-intro-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.stat-item {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-light-grey);
    transition: all var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-grey);
}

/* ===== CLASS DETAIL SECTIONS ===== */
.class-section {
    padding: var(--space-2xl) 0;
    border-bottom: 1px solid var(--color-light-grey);
    scroll-margin-top: calc(var(--header-height) + 60px);
}

.class-section:last-of-type {
    border-bottom: none;
}

.class-section--alt {
    background: var(--color-off-white);
}

.class-detail-grid {
    display: grid;
    gap: var(--space-xl);
    align-items: start;
}

@media (min-width: 900px) {
    .class-detail-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
        align-items: center;
    }

    .class-detail-grid--reverse .class-detail-image {
        order: 2;
    }

    .class-detail-grid--reverse .class-detail-content {
        order: 1;
    }
}

/* Image Container */
.class-detail-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.class-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
}

.class-detail-image:hover img {
    transform: scale(1.03);
}

.class-detail-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    box-shadow: var(--shadow-md);
}

.class-detail-badge--accent {
    background: var(--color-accent);
    color: var(--color-secondary);
}

.class-detail-badge--green {
    background: #22c55e;
    color: var(--color-white);
}

/* Content */
.class-detail-content h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--color-secondary);
    line-height: 1.15;
    margin-bottom: var(--space-md);
}

.class-detail-content .lead {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.class-detail-content p {
    color: var(--color-grey);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

/* Curriculum */
.class-curriculum {
    margin: var(--space-lg) 0;
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.class-section--alt .class-curriculum {
    background: var(--color-white);
}

.class-curriculum h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-md);
}

.curriculum-list {
    display: grid;
    gap: var(--space-sm);
}

@media (min-width: 480px) {
    .curriculum-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

.curriculum-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-dark-grey);
    line-height: 1.5;
}

.list-icon {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Class Info Grid */
.class-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.class-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.class-info-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.class-info-item div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.class-info-item strong {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-grey);
}

.class-info-item span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-dark-grey);
}

/* Alert Box */
.class-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    background: rgba(196, 30, 58, 0.06);
    border: 1px solid rgba(196, 30, 58, 0.2);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-md) 0;
}

.class-alert svg {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.class-alert p {
    font-size: 0.9rem;
    color: var(--color-dark-grey);
    margin: 0;
}

/* Kids Benefits */
.kids-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin: var(--space-lg) 0;
}

@media (min-width: 480px) {
    .kids-benefits {
        grid-template-columns: repeat(3, 1fr);
    }
}

.kids-benefit {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-dark-grey);
    transition: all var(--transition-fast);
}

.kids-benefit:hover {
    background: rgba(196, 30, 58, 0.06);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.kids-benefit-icon {
    font-size: 1.2rem;
    line-height: 1;
    flex-shrink: 0;
}

/* Class Actions */
.class-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

/* ===== TIMETABLE ===== */
.timetable-section {
    background: var(--color-off-white);
}

.timetable-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-md);
    outline: none;
}

.timetable-wrapper:focus {
    box-shadow: 0 0 0 3px var(--color-accent);
}

.timetable {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-width: 600px;
}

.timetable thead {
    background: var(--color-secondary);
    color: var(--color-white);
}

.timetable th {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    white-space: nowrap;
}

.timetable td {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-light-grey);
    font-size: 0.9rem;
    color: var(--color-dark-grey);
    vertical-align: middle;
}

.timetable tbody tr:last-child td {
    border-bottom: none;
}

.timetable tbody tr {
    transition: background var(--transition-fast);
}

.timetable tbody tr:hover {
    background: rgba(196, 30, 58, 0.03);
}

/* Class Tags / Pills */
.class-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.class-tag--red {
    background: rgba(196, 30, 58, 0.1);
    color: var(--color-primary);
}

.class-tag--blue {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

.class-tag--green {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.class-tag--orange {
    background: rgba(249, 115, 22, 0.1);
    color: #ea580c;
}

.class-tag--purple {
    background: rgba(168, 85, 247, 0.1);
    color: #9333ea;
}

/* Responsive Timetable */
@media (max-width: 599px) {
    .timetable-wrapper {
        box-shadow: none;
        border-radius: 0;
        overflow: visible;
    }

    .timetable {
        min-width: unset;
    }

    .timetable thead {
        display: none;
    }

    .timetable,
    .timetable tbody,
    .timetable tr,
    .timetable td {
        display: block;
        width: 100%;
    }

    .timetable tr {
        background: var(--color-white);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        margin-bottom: var(--space-md);
        padding: var(--space-md);
        border: 1px solid var(--color-light-grey);
    }

    .timetable td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-bottom: 1px solid var(--color-light-grey);
        padding: var(--space-sm) var(--space-md);
    }

    .timetable td:last-child {
        border-bottom: none;
    }

    .timetable td::before {
        content: attr(data-label);
        font-weight: 700;
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--color-grey);
        flex-shrink: 0;
        margin-right: var(--space-sm);
    }
}

.timetable-note {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-grey);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-light-grey);
}

.timetable-note a {
    color: var(--color-primary);
    font-weight: 500;
}

.timetable-note svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

/* ===== FAQ SECTION ===== */
.faq-container {
    max-width: 800px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-light-grey);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:has(.faq-question[aria-expanded="true"]) {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.08);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-secondary);
    font-family: var(--font-body);
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-question[aria-expanded="true"] {
    color: var(--color-primary);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--space-lg) var(--space-lg);
}

.faq-answer p {
    font-size: 0.95rem;
    color: var(--color-grey);
    line-height: 1.8;
}

/* Animated FAQ */
.faq-answer-wrapper {
    overflow: hidden;
    transition: height var(--transition-base);
}