/* 
 * About 页面独有样式
 * 注意：global.css 已包含的样式（如 navbar、footer、language-switcher 等）不再重复定义
 */

/* ========== Page Header ========== */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,96C1248,75,1344,53,1392,42.7L1440,32L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.5;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ========== Section Styles ========== */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 2px;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 1.5rem auto 0;
}

/* ========== Tab Navigation ========== */
.tab-navigation {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 0.5rem;
    margin-bottom: 3rem;
    display: inline-flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.875rem 2rem;
    border: none;
    background: transparent;
    color: var(--gray);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn i {
    font-size: 1.1rem;
}

.tab-btn:hover {
    color: var(--primary);
    background: rgba(26, 95, 122, 0.05);
}

.tab-btn.active {
    color: var(--white);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    box-shadow: 0 4px 12px rgba(26, 95, 122, 0.3);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

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

/* ========== About Intro ========== */
.about-intro {
    background: var(--white);
}

.about-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.about-content h2::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 2px;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.about-image {
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

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

/* ========== Values Section ========== */
.values-section {
    background: linear-gradient(135deg, rgba(26, 95, 122, 0.03) 0%, rgba(21, 152, 149, 0.03) 100%);
}

.value-item {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: var(--transition);
    border-left: 4px solid var(--primary);
}

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

.value-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.3;
    line-height: 1;
    flex-shrink: 0;
}

.value-content h3 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.value-content p {
    color: var(--gray);
    line-height: 1.7;
    margin: 0;
}

/* ========== Advantages Section ========== */
.advantages-section {
    background: var(--white);
}

.advantage-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
    height: 100%;
    border: 2px solid #e9ecef;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    transition: var(--transition);
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.1) rotate(5deg);
}

.advantage-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1rem;
}

.advantage-card p {
    color: var(--gray);
    line-height: 1.7;
    margin: 0;
}

/* ========== Gallery Section ========== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-caption {
    background: var(--white);
    padding: 1.25rem;
    text-align: center;
}

.gallery-caption h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.gallery-caption p {
    font-size: 0.9rem;
    color: var(--gray);
    margin: 0;
}

/* ========== Honors Section ========== */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.honor-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
    border: 2px solid #e9ecef;
}

.honor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.honor-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    color: var(--primary);
    font-size: 3rem;
    transition: var(--transition);
}

.honor-card:hover .honor-icon {
    transform: scale(1.1);
}

.honor-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.honor-card p {
    font-size: 0.95rem;
    color: var(--gray);
    line-height: 1.6;
}

.honor-year {
    display: inline-block;
    background: linear-gradient(135deg, rgba(26, 95, 122, 0.1) 0%, rgba(21, 152, 149, 0.1) 100%);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    margin-top: 1rem;
}

.btn-custom {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    display: inline-block;
}

.btn-light-custom {
    background: var(--white);
    color: var(--primary);
}

.btn-light-custom:hover {
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.btn-outline-custom {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline-custom:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    color: var(--white);
}

/* ========== Responsive Styles ========== */
@media (max-width: 991px) {
    .page-header h1 {
        font-size: 2.5rem;
    }

    .section {
        padding: 80px 0;
    }

    .tab-navigation {
        flex-wrap: wrap;
        justify-content: center;
    }

    .tab-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }

    .btn-custom {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 80px 0 60px;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .tab-btn {
        padding: 0.625rem 1rem;
        font-size: 0.9rem;
    }

    .tab-btn i {
        display: none;
    }

    .btn-custom {
        padding: 0.75rem 1.75rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 576px) {
    .page-header h1 {
        font-size: 1.75rem;
    }

    .section-title h2 {
        font-size: 1.75rem;
    }

    .value-item {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }

    .value-number {
        font-size: 2.5rem;
    }

    .advantage-card {
        padding: 2rem 1.5rem;
    }

    .gallery-grid,
    .honors-grid {
        grid-template-columns: 1fr;
    }

    .d-flex.gap-3 {
        flex-direction: column;
        gap: 1rem !important;
    }

    .btn-custom {
        width: 100%;
        padding: 0.875rem 2rem;
    }
}