/* ==========================================================================
   画绛集美术 - 官网样式表
   ========================================================================== */

/* ========== 1. Design Tokens ========== */
:root {
    /* Brand Colors — 绛青色 */
    --color-primary: #1B6B6A;
    --color-primary-light: #329C9A;
    --color-primary-dark: #124847;
    --color-accent: #D4956A;
    --color-accent-light: #E8B894;
    --color-accent-dark: #BE7A4E;

    /* Neutral Colors */
    --color-bg: #FAF6F0;
    --color-bg-alt: #F2EDE5;
    --color-text: #2C2C2C;
    --color-text-light: #666666;
    --color-text-lighter: #999999;
    --color-white: #FFFFFF;
    --color-border: #E5DDD3;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    --font-serif: "Songti SC", "SimSun", "STSong", serif;

    /* Spacing */
    --section-padding: 100px 0;
    --section-padding-sm: 60px 0;
    --container-max: 1180px;
    --container-padding: 0 24px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;

    /* Transitions */
    --transition: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(27, 107, 106, 0.12);
    --shadow-hover: 0 12px 40px rgba(27, 107, 106, 0.18);
}

/* ========== 2. Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

h1, h2, h3, h4 {
    line-height: 1.3;
    font-weight: 700;
}

/* ========== 3. Layout ========== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--color-accent-dark);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    font-size: 36px;
    color: var(--color-text);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-text-light);
}

/* ========== 4. Buttons ========== */
.btn-primary, .btn-outline {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-lg { padding: 16px 40px; font-size: 16px; }
.btn-block { width: 100%; display: block; }

/* ========== 5. Header ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 18px 0;
}

.header.scrolled {
    background: rgba(250, 246, 240, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    padding: 12px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-white);
    transition: var(--transition);
}

.header.scrolled .logo { color: var(--color-text); }

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 10px;
    font-size: 20px;
    font-family: var(--font-serif);
    font-weight: 700;
    flex-shrink: 0;
}

.logo-text { white-space: nowrap; }

.nav {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
    position: relative;
}

.header.scrolled .nav-link { color: var(--color-text); }

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

.nav-link:hover::after { width: 100%; }
.nav-link:hover { color: var(--color-primary); }
.header.scrolled .nav-link:hover { color: var(--color-primary); }

.nav-cta {
    color: var(--color-white) !important;
    padding: 10px 24px !important;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
}

.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--color-primary-dark); }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 26px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
    border-radius: 2px;
}

.header.scrolled .menu-toggle span { background: var(--color-text); }

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========== 6. Hero ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: url('../assets/images/Abstract_warm_toned_oil_painti_2026-07-03T06-48-50.png') center center / cover no-repeat, var(--color-primary);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6, 36, 36, 0.72) 0%, rgba(18, 72, 71, 0.65) 50%, rgba(6, 36, 36, 0.88) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 120px 24px 80px;
}

.hero-title {
    font-size: clamp(42px, 8vw, 72px);
    color: var(--color-white);
    font-weight: 800;
    letter-spacing: 4px;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(15px, 2.5vw, 20px);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    letter-spacing: 1px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.stat-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-accent-light);
    line-height: 1;
}

.stat-unit {
    font-size: 16px;
    font-weight: 500;
    margin-left: 2px;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    z-index: 2;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ========== 7. About ========== */
.about { background: var(--color-bg); }

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-text p {
    margin-bottom: 18px;
    color: var(--color-text-light);
    font-size: 16px;
    line-height: 1.9;
}

.about-text strong {
    color: var(--color-primary);
    font-size: 18px;
}

.about-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-image .image-placeholder {
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-lg);
    background: var(--color-bg-alt);
    border: 2px dashed var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--color-text-lighter);
}

.about-image .image-placeholder svg {
    color: var(--color-text-lighter);
    opacity: 0.5;
}

.about-image .image-placeholder span {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-light);
}

.about-image .image-placeholder small {
    font-size: 12px;
    color: var(--color-text-lighter);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 40px;
    margin-bottom: 80px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
}

.timeline-item {
    position: relative;
    margin-bottom: 36px;
}

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

.timeline-dot {
    position: absolute;
    left: -34px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-bg);
    box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-content {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 24px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow);
    transform: translateX(6px);
}

.timeline-year {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(27, 107, 106, 0.08);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 19px;
    margin-bottom: 6px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--color-text-light);
}

/* Advantages */
.advantages {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 3px solid transparent;
}

.advantage-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
    border-top-color: var(--color-accent);
}

.advantage-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: 50%;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 18px;
    font-family: var(--font-serif);
}

.advantage-card h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.advantage-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ========== 8. Courses ========== */
.courses { background: var(--color-bg-alt); }

.course-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 920px;
    margin: 0 auto;
}

.course-gallery-item {
    background: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    cursor: pointer;
}

.course-gallery-item:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    transform: translateY(-4px);
}

.course-gallery-img {
    position: relative;
    width: 100%;
    max-height: 420px;
    overflow: hidden;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-gallery-img img {
    max-width: 100%;
    max-height: 420px;
    object-fit: contain;
    padding: 10px;
    transition: all 0.3s ease;
}

.course-gallery-item:hover .course-gallery-img img {
    transform: scale(1.03);
}

.course-gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(27, 107, 106, 0.72);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--color-white);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.course-gallery-item:hover .course-gallery-overlay {
    opacity: 1;
}

.course-gallery-overlay svg {
    opacity: 0.9;
}

.course-gallery-overlay span {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
}

.course-gallery-item h3 {
    font-size: 18px;
    padding: 20px 20px 8px;
    color: var(--color-text);
}

.course-gallery-item p {
    font-size: 14px;
    color: var(--color-text-light);
    padding: 0 20px 24px;
    line-height: 1.6;
}

.course-note {
    text-align: center;
    margin-top: 40px;
    color: var(--color-text-lighter);
    font-size: 14px;
}

.course-note a { color: var(--color-primary); font-weight: 500; }
.course-note a:hover { text-decoration: underline; }

/* Course Lightbox */
.course-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.course-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.course-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    cursor: pointer;
}

.course-lightbox-close,
.course-lightbox-prev,
.course-lightbox-next {
    position: absolute;
    z-index: 2;
    background: rgba(255, 255, 255, 0.12);
    border: none;
    color: var(--color-white);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.course-lightbox-close:hover,
.course-lightbox-prev:hover,
.course-lightbox-next:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.08);
}

.course-lightbox-close { top: 24px; right: 24px; }
.course-lightbox-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.course-lightbox-next { right: 24px; top: 50%; transform: translateY(-50%); }

.course-lightbox-prev:hover,
.course-lightbox-next:hover {
    transform: translateY(-50%) scale(1.08);
}

.course-lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.course-lightbox-content img {
    max-width: 100%;
    max-height: 82vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.course-lightbox-caption {
    color: var(--color-white);
    font-size: 16px;
    font-weight: 500;
    margin-top: 16px;
    text-align: center;
    opacity: 0.9;
}

.course-lightbox-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    z-index: 2;
}

@media (max-width: 992px) {
    .course-gallery { grid-template-columns: repeat(2, 1fr); }
    .course-lightbox-prev { left: 12px; }
    .course-lightbox-next { right: 12px; }
}

@media (max-width: 576px) {
    .course-gallery { grid-template-columns: 1fr; }
    .course-lightbox-close { top: 16px; right: 16px; }
    .course-lightbox-prev,
    .course-lightbox-next {
        width: 40px;
        height: 40px;
    }
}

/* ========== 9. Teachers ========== */
.teachers { background: var(--color-bg); }

.teacher-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.teacher-card {
    background: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.teacher-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

.teacher-featured {
    border: 2px solid var(--color-accent);
}

.teacher-photo {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.teacher-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.teacher-featured .teacher-photo {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-accent-dark));
}

.teacher-initial {
    font-size: 56px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    font-family: var(--font-serif);
}

.teacher-info {
    padding: 24px;
    text-align: center;
}

.teacher-info h3 {
    font-size: 19px;
    margin-bottom: 4px;
}

.teacher-role {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent-dark);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.teacher-info p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ========== 10. Gallery ========== */
.gallery { background: var(--color-bg-alt); }

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.gallery-item {
    aspect-ratio: 1;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--g1, var(--color-primary)), var(--g2, var(--color-accent)));
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

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

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

.gallery-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    transition: var(--transition);
    z-index: 1;
}

.gallery-item:hover::before { background: rgba(0, 0, 0, 0.25); }
.gallery-item:hover { transform: scale(1.03); box-shadow: var(--shadow-lg); }

.gallery-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 14px 12px;
    color: var(--color-white);
    font-size: 14px;
    font-weight: 600;
    z-index: 2;
    opacity: 0.95;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent);
    transform: translateY(6px);
    transition: var(--transition);
}

.gallery-item:hover .gallery-label {
    transform: translateY(0);
    opacity: 1;
}

/* ========== 11. Contact ========== */
.contact { background: var(--color-bg); }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(27, 107, 106, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.contact-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--color-text-light);
}

.contact-qr {
    margin-top: 10px;
    max-width: 140px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.qr-codes {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.qr-code {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.qr-code span {
    font-size: 12px;
    color: var(--color-text-light);
}

/* WeChat Mini-program Launch Button */
.wx-launch-container {
    margin-top: 14px;
    text-align: center;
}

.wx-launch-btn {
    display: inline-block;
    padding: 12px 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #fff;
    border: none;
    border-radius: 28px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.wx-launch-btn:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.contact-form-wrapper {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow);
    position: relative;
}

.contact-form { display: flex; flex-direction: column; gap: 18px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.required { color: #d44; }

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    background: var(--color-bg);
    color: var(--color-text);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(27, 107, 106, 0.1);
}

.form-group textarea { resize: vertical; }

.form-note {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-lighter);
}

.form-success {
    display: none;
    position: absolute;
    inset: 0;
    background: var(--color-white);
    border-radius: var(--radius);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    z-index: 10;
}

.form-success.show { display: flex; }

.form-success svg { color: var(--color-primary); }
.form-success p { font-size: 22px; font-weight: 700; color: var(--color-text); }
.form-success span { font-size: 14px; color: var(--color-text-light); }

/* ========== 12. Footer ========== */
.footer {
    background: #1a1a1a;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 32px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-white);
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover { color: var(--color-accent-light); }

.footer-contact p {
    font-size: 14px;
    margin-bottom: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p { font-size: 13px; color: rgba(255, 255, 255, 0.5); padding-bottom: 60px; }

.footer-legal {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-legal p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 4px;
    line-height: 1.7;
}

.footer-legal p strong {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 700;
    font-size: 14px;
}

/* ========== 13. Back to Top ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ========== 14. Mobile Floating CTA ========== */
.float-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    z-index: 998;
}

/* ========== 15. Scroll Animations ========== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

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

/* ========== 16. Responsive ========== */
@media (max-width: 980px) {
    .section { padding: var(--section-padding-sm); }
    .section-title { font-size: 28px; }
    .section-header { margin-bottom: 40px; }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 32px 32px;
        gap: 20px;
        transition: right 0.4s ease;
        box-shadow: -4px 0 30px rgba(0, 0, 0, 0.1);
    }

    .nav.active { right: 0; }

    .nav-link {
        color: var(--color-text) !important;
        font-size: 16px;
    }

    .nav-cta {
        width: 100%;
        text-align: center;
    }

    .menu-toggle { display: flex; z-index: 1001; }
    .header.scrolled .menu-toggle span { background: var(--color-text); }
    .menu-toggle.active span { background: var(--color-text); }

    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .advantages { grid-template-columns: repeat(2, 1fr); }
    .course-gallery { grid-template-columns: repeat(2, 1fr); }
    .teacher-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .section { padding: 48px 0; }
    .section-title { font-size: 24px; }
    .section-subtitle { font-size: 14px; }

    .hero-stats { gap: 28px; }
    .stat-num { font-size: 26px; }
    .stat-label { font-size: 12px; }

    .hero-cta { flex-direction: column; width: 100%; }
    .hero-cta .btn-primary, .hero-cta .btn-outline { width: 100%; }

    .advantages { grid-template-columns: 1fr; }
    .course-gallery { grid-template-columns: 1fr; }
    .teacher-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }

    .form-row { grid-template-columns: 1fr; }

    .contact-form-wrapper { padding: 24px; }

    .footer-content { flex-direction: column; align-items: center; text-align: center; }

    .float-cta { display: block; }
    .back-to-top { bottom: 70px; }
    .footer { padding-bottom: 80px; }

    .logo-text { font-size: 17px; }
    .logo-mark { width: 32px; height: 32px; font-size: 17px; }
}

@media (max-width: 400px) {
    .gallery-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 20px; }
}