/* 1. Subpage Hero Section */
.page-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-bg-white);
    padding: 100px 0 60px;
    margin-top: var(--header-height);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 173, 181, 0.15) 0%, transparent 70%);
    border-radius: var(--radius-full);
}

.page-title {
    font-size: 3rem;
    color: var(--color-bg-white);
    font-weight: 800;
    margin-bottom: 12px;
}

.breadcrumbs {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.breadcrumbs a {
    color: rgba(255, 255, 255, 0.9);
}

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

.breadcrumbs span {
    color: rgba(255, 255, 255, 0.4);
}

/* 2. Overview Section */
.about-overview-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-intro-title {
    font-size: 2.25rem;
    margin-bottom: 20px;
}

.about-intro-p {
    font-size: 1.05rem;
    color: var(--color-text-dark);
    margin-bottom: 24px;
}

.about-desc-p {
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.overview-images {
    position: relative;
    height: 420px;
}

.overview-img-main {
    width: 85%;
    height: 85%;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.overview-img-secondary {
    width: 60%;
    height: 60%;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 8px solid var(--color-bg-white);
    position: absolute;
    bottom: 0;
    right: 0;
    z-index: 2;
}

/* 3. Mission, Vision, and Values */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.value-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-primary);
    transition: var(--transition-normal);
}

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

.value-card.accent {
    border-top-color: var(--color-accent);
}

.value-card.teal {
    border-top-color: var(--color-teal);
}

.value-icon {
    width: 54px;
    height: 54px;
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition-normal);
}

.value-card:hover .value-icon {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
}

.value-card.accent:hover .value-icon {
    background-color: var(--color-accent);
}

.value-card.teal:hover .value-icon {
    background-color: var(--color-teal);
}

.value-card-title {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.value-card-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* 4. Timeline Section */
.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 40px auto 0;
    padding-left: 30px;
}

/* Vertical line */
.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 15px;
    width: 3px;
    height: 100%;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

/* Circle marker */
.timeline-marker {
    position: absolute;
    top: 5px;
    left: -24px;
    width: 15px;
    height: 15px;
    border-radius: var(--radius-full);
    background-color: var(--color-bg-white);
    border: 3px solid var(--color-accent);
    z-index: 2;
    transition: var(--transition-normal);
}

.timeline-item:hover .timeline-marker {
    background-color: var(--color-accent);
    transform: scale(1.2);
}

.timeline-content {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 24px 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition-normal);
}

.timeline-item:hover .timeline-content {
    box-shadow: var(--shadow-md);
}

.timeline-year {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.timeline-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Responsive details */
@media (max-width: 1024px) {
    .about-overview-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .overview-images {
        height: 380px;
        max-width: 500px;
        margin: 0 auto;
        width: 100%;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2.25rem;
    }
    
    .about-intro-title {
        font-size: 1.75rem;
    }
}