/* =============================================================
   ABOUT PAGE — about.css
   Extends style.css | Mobile-first | Accessible
   Covers: pages/about.php (About, Principal, Faculty sections)
   ============================================================= */

/* ═══════════════════════════════════════════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-hero {
    position: relative;
    background: var(--color-dark);
    padding-top: var(--total-header);
    overflow: hidden;
}

.about-hero__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 90% at 0% 60%, rgba(244,127,31,.18) 0%, transparent 65%),
        radial-gradient(ellipse 50% 70% at 100% 30%, rgba(237,30,36,.12) 0%, transparent 65%);
    pointer-events: none;
}

.about-hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 28px 28px;
}

.about-hero__inner {
    position: relative;
    z-index: 2;
    padding: var(--space-20) 0 0;
}

.about-hero__content {
    max-width: 800px;
    color: #fff;
    padding-bottom: var(--space-16);
}

.about-hero__label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.about-hero__label::before {
    content: '';
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

.about-hero__label i {
    font-size: 1.1em;
}

.about-hero__heading {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.08;
    margin-bottom: var(--space-5);
    letter-spacing: -.02em;
    color: #fff;
}

.about-hero__sub {
    font-size: clamp(var(--text-base), 2vw, var(--text-xl));
    opacity: .85;
    font-weight: 300;
    max-width: 650px;
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.about-hero__breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: rgba(255,255,255,.5);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.about-hero__breadcrumb a {
    color: rgba(255,255,255,.7);
    transition: color var(--transition-fast);
}

.about-hero__breadcrumb a:hover {
    color: var(--color-primary);
}

.about-hero__breadcrumb i {
    font-size: .55rem;
    opacity: .6;
}

.about-hero__breadcrumb [aria-current] {
    color: var(--color-primary);
    font-weight: 600;
}

.about-hero__anchors {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-8);
}

.about-hero__wave {
    display: block;
    width: 100%;
    height: 60px;
    position: absolute;
    bottom: 0;
    left: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   HISTORY SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-history {
    padding: var(--space-20) 0;
    background: #fff;
}

.about-history__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-history__content {
    max-width: 600px;
}

.about-history__text {
    font-size: var(--text-base);
    line-height: 1.9;
    color: var(--color-gray-700);
    margin: var(--space-6) 0;
}

.about-history__milestones {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.about-history__milestone {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.about-history__milestone:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.about-history__milestone-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.about-history__milestone-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.about-history__milestone-year {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-primary);
}

.about-history__milestone-text {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    font-weight: 500;
}

.about-history__visual {
    display: flex;
    justify-content: center;
}

.about-history__image-wrap {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-history__image-wrap img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.about-history__image-badge {
    position: absolute;
    bottom: var(--space-6);
    right: var(--space-6);
    background: #fff;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.about-history__image-badge .badge-num {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-heading);
    line-height: 1;
}

.about-history__image-badge .badge-label {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-top: var(--space-1);
}

/* Tablet+ */
@media (min-width: 768px) {
    .about-history__grid {
        grid-template-columns: 1.2fr 1fr;
    }

    .about-history__milestones {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   VISION & MISSION SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-vision {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.about-vision__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.about-vision__card {
    background: #fff;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border-top: 4px solid var(--color-primary);
}

.about-vision__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-vision__card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-5);
    border-radius: var(--radius-full);
    background: var(--color-primary-pale);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.about-vision__card-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
    font-family: var(--font-heading);
}

.about-vision__card-desc {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* Tablet+ */
@media (min-width: 768px) {
    .about-vision__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STATS SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-stats {
    padding: var(--space-20) 0;
    background: #fff;
}

.about-stats__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.about-stats__card {
    text-align: center;
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-fast);
}

.about-stats__card:hover {
    transform: scale(1.05);
}

.about-stats__number {
    display: block;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-heading);
    line-height: 1;
    margin-bottom: var(--space-2);
}

.about-stats__label {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* Desktop */
@media (min-width: 768px) {
    .about-stats__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   INFRASTRUCTURE SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-infrastructure {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.about-infrastructure__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.about-infrastructure__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.about-infrastructure__item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.about-infrastructure__icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: var(--color-primary-pale);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.about-infrastructure__label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-800);
    text-align: center;
}

/* Desktop */
@media (min-width: 768px) {
    .about-infrastructure__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .about-infrastructure__grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   PRINCIPAL SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-principal {
    padding: var(--space-20) 0;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.about-principal__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(135deg, var(--color-primary-pale) 0%, #fff 100%);
}

.about-principal__grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-principal__image-wrap {
    position: relative;
    display: flex;
    justify-content: center;
}

.about-principal__image-frame {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.about-principal__image-frame::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-xl);
    z-index: -1;
}

.about-principal__image-frame img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.about-principal__quote-badge {
    position: absolute;
    top: var(--space-6);
    left: var(--space-6);
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
}

.about-principal__content {
    max-width: 600px;
}

.about-principal__info {
    margin-bottom: var(--space-6);
}

.about-principal__name {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
    font-family: var(--font-heading);
}

.about-principal__title {
    font-size: var(--text-base);
    color: var(--color-primary);
    font-weight: 600;
}

.about-principal__quote {
    font-size: var(--text-xl);
    font-style: italic;
    color: var(--color-gray-800);
    padding: var(--space-6);
    border-left: 4px solid var(--color-primary);
    background: var(--color-gray-50);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: var(--space-6) 0;
    line-height: 1.6;
}

.about-principal__content-text {
    font-size: var(--text-base);
    line-height: 1.9;
    color: var(--color-gray-700);
}

.about-principal__content-text p {
    margin-bottom: var(--space-4);
}

.about-principal__content-text h4 {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin: var(--space-6) 0 var(--space-2);
}

.about-principal__content-text ul,
.about-principal__content-text ol {
    margin: var(--space-3) 0 var(--space-4);
    padding-left: var(--space-6);
}

.about-principal__content-text li {
    margin-bottom: var(--space-2);
}

.about-principal__signature {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 2px solid var(--color-gray-200);
}

.about-principal__signature span {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    font-family: 'Playfair Display', serif;
}

/* Tablet+ */
@media (min-width: 768px) {
    .about-principal__grid {
        grid-template-columns: 1fr 1.3fr;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   FACULTY SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-faculty {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

/* Faculty Filter Bar */
.faculty-filter-bar {
    margin-top: var(--space-12);
    margin-bottom: var(--space-8);
}

.faculty-filter-bar__inner {
    display: flex;
    gap: var(--space-2);
    overflow-x: auto;
    padding: var(--space-4) 0;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-gray-200);
    -webkit-overflow-scrolling: touch;
}

.faculty-filter-bar__inner::-webkit-scrollbar {
    height: 6px;
}

.faculty-filter-bar__inner::-webkit-scrollbar-track {
    background: var(--color-gray-200);
    border-radius: 3px;
}

.faculty-filter-bar__inner::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 3px;
}

.faculty-filter-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.faculty-filter-btn:hover {
    background: var(--color-gray-200);
}

.faculty-filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.faculty-filter-btn .filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 var(--space-1);
    background: rgba(0,0,0,.1);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
}

.faculty-filter-btn.active .filter-count {
    background: rgba(255,255,255,.2);
}

/* Faculty Grid */
.faculty-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.faculty-card {
    background: #fff;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.faculty-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.faculty-card__image-wrap {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.faculty-card__image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.faculty-card:hover .faculty-card__image-wrap img {
    transform: scale(1.1);
}

.faculty-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.faculty-card:hover .faculty-card__overlay {
    opacity: 1;
}

.faculty-card__social {
    display: flex;
    gap: var(--space-3);
}

.faculty-card__social-link {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: #fff;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.faculty-card__social-link:hover {
    transform: scale(1.1);
    background: var(--color-primary);
    color: #fff;
}

.faculty-card__body {
    padding: var(--space-5);
    text-align: center;
}

.faculty-card__name {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
    font-family: var(--font-heading);
}

.faculty-card__position {
    font-size: var(--text-sm);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.faculty-card__qualification {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-2);
}

.faculty-card__experience {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.faculty-card__experience i {
    font-size: .75rem;
}

/* Faculty Load More */
.faculty-load-more {
    display: flex;
    justify-content: center;
    margin-top: var(--space-12);
}

/* Tablet+ */
@media (min-width: 640px) {
    .faculty-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) {
    .faculty-filter-bar__inner {
        justify-content: center;
        flex-wrap: wrap;
        overflow-x: visible;
    }
    
    .faculty-filter-btn {
        padding: var(--space-3) var(--space-5);
    }
}

@media (min-width: 1024px) {
    .faculty-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   CTA SECTION
═══════════════════════════════════════════════════════════════════════════ */
.about-cta-btns {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE ADJUSTMENTS
═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 639px) {
    .about-hero__inner {
        padding: var(--space-12) 0;
    }

    .about-hero__anchors {
        flex-direction: column;
    }

    .about-hero__anchors .btn {
        width: 100%;
        justify-content: center;
    }

    .about-principal__image-frame::before {
        inset: -2px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   ANIMATIONS & REVEAL EFFECTS
═══════════════════════════════════════════════════════════════════════════ */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
}

[data-reveal].reveal-active {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal-delay="1"] { transition-delay: .1s; }
[data-reveal-delay="2"] { transition-delay: .2s; }
[data-reveal-delay="3"] { transition-delay: .3s; }
[data-reveal-delay="4"] { transition-delay: .4s; }

/* Hide filtered faculty items */
.faculty-card.hidden {
    display: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   SMOOTH SCROLL FOR ANCHOR LINKS
═══════════════════════════════════════════════════════════════════════════ */
html {
    scroll-behavior: smooth;
}

#principal, #faculty {
    scroll-margin-top: var(--total-header);
}