/* ===== CSS Variables ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --red: #ef4444;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --light: #f1f5f9;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-hero: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --transition: all 0.3s ease;
    --border-radius: 12px;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--white);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

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

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    font-weight: 500;
    color: var(--dark);
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #e0f2fe 0%, #fce7f3 50%, #ddd6fe 100%);
    z-index: -2;
}

.floating-shapes {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: rgba(102, 126, 234, 0.1);
    top: 10%;
    left: -5%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: rgba(118, 75, 162, 0.1);
    top: 60%;
    right: -3%;
    animation-delay: 1s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: rgba(16, 185, 129, 0.1);
    bottom: 10%;
    left: 20%;
    animation-delay: 2s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    background: rgba(245, 158, 11, 0.1);
    top: 20%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(10deg);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-text {
    animation: slideInLeft 1s ease;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 25px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(16, 185, 129, 0);
    }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
}

.hero-image {
    animation: slideInRight 1s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.image-container {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.book-stack {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 15px;
    animation: morph 8s ease-in-out infinite;
    box-shadow: var(--shadow-xl);
}

.book-stack i {
    font-size: 4rem;
    color: var(--white);
    animation: bounce 2s ease-in-out infinite;
}

.book-stack i:nth-child(2) {
    animation-delay: 0.2s;
}

.book-stack i:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes morph {
    0%, 100% {
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    }
    25% {
        border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
    }
    50% {
        border-radius: 50% 60% 30% 60% / 30% 50% 70% 40%;
    }
    75% {
        border-radius: 60% 40% 60% 30% / 70% 30% 50% 60%;
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: fadeInUp 1s ease 0.5s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--primary);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(15px);
    }
}

.scroll-indicator span {
    font-size: 0.8rem;
    color: var(--gray);
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* ===== About Section ===== */
.about {
    background: var(--light);
}

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

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

.image-frame {
    width: 350px;
    height: 350px;
    background: var(--gradient-secondary);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transform: rotate(-5deg);
    transition: var(--transition);
    box-shadow: var(--shadow-xl);
}

.image-frame:hover {
    transform: rotate(0deg) scale(1.05);
}

.frame-icon i {
    font-size: 8rem;
    color: var(--white);
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--gray);
    margin-bottom: 25px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.about-feature:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.about-feature i {
    color: var(--secondary);
    font-size: 1.2rem;
}

/* ===== Classes Section ===== */
.classes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.class-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.class-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.class-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.class-card:hover::before {
    transform: scaleX(1);
}

.class-card.featured {
    background: var(--gradient-primary);
    color: var(--white);
    transform: scale(1.05);
}

.class-card.featured:hover {
    transform: scale(1.08) translateY(-10px);
}

.class-card.featured::before {
    background: var(--white);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--accent);
    color: var(--white);
    padding: 5px 40px;
    font-size: 0.8rem;
    font-weight: 600;
    transform: rotate(45deg);
}

.class-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.class-icon.primary {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.class-icon.middle {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.class-icon.senior {
    background: rgba(16, 185, 129, 0.1);
    color: var(--secondary);
}

.class-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.class-range {
    display: inline-block;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.class-card.featured .class-range {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.class-card p {
    color: var(--gray);
    margin-bottom: 20px;
}

.class-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.class-subjects {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.class-subjects li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--gray);
}

.class-card.featured .class-subjects li {
    color: rgba(255, 255, 255, 0.9);
}

.class-subjects li i {
    font-size: 0.8rem;
    color: var(--primary);
}

.class-card.featured .class-subjects li i {
    color: var(--white);
}

.class-teacher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid var(--light);
    color: var(--dark);
    font-weight: 500;
}

.class-card.featured .class-teacher {
    border-top-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

/* ===== Teachers Section ===== */
.teachers {
    background: var(--light);
}

.teachers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.teacher-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.teacher-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.teacher-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.teacher-avatar {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
}

.teacher-avatar.female {
    background: linear-gradient(135deg, #fce7f3 0%, #fbcfe8 100%);
    color: #ec4899;
}

.teacher-avatar.male {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #3b82f6;
}

.teacher-overlay {
    position: absolute;
    inset: 0;
    background: rgba(102, 126, 234, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.teacher-card:hover .teacher-overlay {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
    transition: var(--transition);
    transform: translateY(20px);
}

.teacher-card:hover .social-links a {
    transform: translateY(0);
}

.social-links a:hover {
    background: var(--dark);
    color: var(--white);
}

.teacher-info {
    padding: 25px;
    text-align: center;
}

.teacher-info h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.teacher-class {
    display: inline-block;
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.teacher-qualifications {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.qualification {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--gray);
}

.qualification i {
    color: var(--accent);
}

/* ===== Features Section ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.feature-card {
    background: var(--white);
    padding: 40px 25px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-card:hover::after {
    transform: scaleX(1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: rotateY(360deg);
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ===== Contact Section ===== */
.contact {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.contact .section-tag {
    background: rgba(255, 255, 255, 0.2);
}

.contact .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-card {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.info-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.info-icon {
    width: 60px;
    height: 60px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    flex-shrink: 0;
}

.info-details h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.info-details a,
.info-details p {
    color: rgba(255, 255, 255, 0.9);
    display: block;
    transition: var(--transition);
}

.info-details a:hover {
    color: var(--white);
}

.contact-form-container {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 2px solid var(--light);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group label {
    position: absolute;
    left: 45px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
    transition: var(--transition);
    pointer-events: none;
    background: var(--white);
    padding: 0 5px;
}

.form-group textarea ~ label {
    top: 25px;
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: 0;
    font-size: 0.8rem;
    color: var(--primary);
}

.form-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
    transition: var(--transition);
}

.form-group textarea ~ i {
    top: 25px;
}

.form-group input:focus ~ i,
.form-group select:focus ~ i,
.form-group textarea:focus ~ i {
    color: var(--primary);
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding-top: 0;
    position: relative;
}

.footer-wave {
    position: relative;
    height: 100px;
    overflow: hidden;
}

.footer-wave svg {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100%;
}

.footer-wave svg path {
    fill: var(--dark);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    padding: 50px 0;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--accent);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 300px;
}

.director-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--white);
    font-size: 0.95rem;
}

.director-info i {
    color: var(--accent);
    font-size: 1.2rem;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 10px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
}

.footer-contact i {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        order: 1;
    }

    .hero-image {
        order: 0;
    }

    .hero-description {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .image-container {
        width: 300px;
        height: 300px;
    }

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

    .class-card.featured {
        transform: none;
    }

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

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: 0;
    }

    .about-text {
        order: 1;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 30px;
        gap: 20px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .animate-title {
        font-size: 2.5rem;
    }

    .classes-grid,
    .teachers-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links h4::after,
    .footer-contact h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links a:hover {
        padding-left: 0;
    }

    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .animate-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .contact-form-container {
        padding: 25px;
    }
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; }

/* ===== Popup Modal Styles ===== */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 15px;
    overflow-y: auto;
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup-modal {
    background: var(--white);
    border-radius: 20px;
    max-width: 400px;
    width: 100%;
    overflow: hidden;
    transform: scale(0.8) translateY(50px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    max-height: 90vh;
    overflow-y: auto;
}

.popup-overlay.active .popup-modal {
    transform: scale(1) translateY(0);
}

.popup-header {
    background: var(--gradient-primary);
    padding: 20px;
    text-align: center;
    color: var(--white);
}

.popup-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    font-size: 1.8rem;
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.popup-header h3 {
    font-size: 1.2rem;
    margin-bottom: 3px;
}

.popup-header p {
    opacity: 0.9;
    font-size: 0.85rem;
}

.popup-body {
    padding: 15px 20px;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 12px;
    background: var(--light);
    border-radius: 10px;
    margin-bottom: 8px;
    transition: var(--transition);
    animation: slideInLeft 0.4s ease backwards;
}

.detail-item:nth-child(1) { animation-delay: 0.1s; }
.detail-item:nth-child(2) { animation-delay: 0.2s; }
.detail-item:nth-child(3) { animation-delay: 0.3s; }
.detail-item:nth-child(4) { animation-delay: 0.4s; }

.detail-item:hover {
    transform: translateX(5px);
    background: #e2e8f0;
}

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

.detail-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.detail-content {
    flex: 1;
    min-width: 0;
}

.detail-label {
    display: block;
    font-size: 0.7rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.detail-value {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dark);
    word-wrap: break-word;
}

.popup-footer {
    padding: 15px 20px 20px;
    display: flex;
    gap: 10px;
}

.popup-btn {
    flex: 1;
    padding: 12px 16px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
}

.popup-btn-cancel {
    background: var(--light);
    color: var(--dark);
}

.popup-btn-cancel:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
}

.popup-btn-confirm {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.popup-btn-confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.popup-btn-confirm:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Success Modal Styles */
.success-modal {
    text-align: center;
    padding: 30px 25px;
    max-width: 350px;
}

.success-animation {
    margin-bottom: 20px;
}

.success-checkmark {
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 2.5rem;
    color: var(--white);
    animation: successPop 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 40px rgba(16, 185, 129, 0.4);
}

@keyframes successPop {
    0% {
        transform: scale(0) rotate(-180deg);
    }
    50% {
        transform: scale(1.2) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
    }
}

.success-modal h3 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 8px;
}

.success-modal p {
    color: var(--gray);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.success-modal .popup-btn-confirm {
    background: var(--gradient-secondary);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.success-modal .popup-btn-confirm:hover {
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
}

/* Loading spinner for button */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive popup */
@media (max-width: 480px) {
    .popup-modal {
        border-radius: 16px;
        max-height: 85vh;
        margin: 10px;
    }

    .popup-header {
        padding: 15px;
    }

    .popup-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .popup-header h3 {
        font-size: 1.1rem;
    }

    .popup-body {
        padding: 12px 15px;
    }

    .detail-item {
        padding: 8px 10px;
        gap: 10px;
    }

    .detail-icon {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }

    .detail-value {
        font-size: 0.85rem;
    }

    .popup-footer {
        padding: 12px 15px 15px;
    }

    .popup-btn {
        padding: 10px 14px;
        font-size: 0.85rem;
    }

    .success-modal {
        padding: 25px 20px;
    }

    .success-checkmark {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }
}