/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors - Warm Palette */
    --color-primary: #FFFFFF;
    --color-secondary: #FFF8F5;
    --color-accent: #FF6B6B;
    --color-accent-dark: #e55a5a;
    --color-accent-light: #FFE8E8;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-lighter: #999999;

    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-primary);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===================================
   Utility Classes
   =================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center {
    text-align: center;
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

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

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

/* ===================================
   Navigation
   =================================== */
.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-sm);
    transition: all var(--transition-normal);
}

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

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.nav-logo:hover {
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-light);
    padding: var(--spacing-xs) 0;
    position: relative;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    width: 30px;
    height: 24px;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    position: absolute;
    width: 30px;
    height: 3px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before,
.hamburger::after {
    content: '';
    left: 0;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FFF9F7 0%, #FFE8E8 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: linear-gradient(45deg, rgba(255, 107, 107, 0.1) 0%, rgba(255, 107, 107, 0.05) 100%);
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: var(--spacing-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-title span {
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

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

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

.about-image {
    position: relative;
}

.image-placeholder {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #FFE8E8 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-lighter);
    font-size: 1.1rem;
    box-shadow: var(--shadow-lg);
}

.about-content .section-title {
    margin-bottom: var(--spacing-md);
}

.about-text {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1.05rem;
}

/* ===================================
   Classes Section
   =================================== */
.classes {
    background: var(--color-secondary);
}

.classes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.class-card {
    background: var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.class-card.featured {
    border: 2px solid var(--color-accent);
    position: relative;
}

.class-card.featured::before {
    content: 'Popular';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: white;
    padding: 4px 16px;
    border-radius: var(--radius-lg);
    font-size: 0.8rem;
    font-weight: 500;
}

.class-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-accent);
}

.class-icon svg {
    width: 100%;
    height: 100%;
}

.class-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.class-age {
    display: inline-block;
    background: var(--color-secondary);
    padding: 4px 12px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.class-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.class-schedule {
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-secondary);
}

.schedule-label {
    font-weight: 500;
    color: var(--color-text);
}

.schedule-time {
    display: block;
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* ===================================
   Gallery Section
   =================================== */
.gallery {
    background: var(--color-primary);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.gallery-item {
    position: relative;
    cursor: pointer;
    overflow: hidden;
    border-radius: var(--radius-sm);
}

.gallery-placeholder {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #FFE8E8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-lighter);
    font-size: 0.9rem;
    transition: all var(--transition-normal);
}

.gallery-item:hover .gallery-placeholder {
    transform: scale(1.05);
    background: linear-gradient(135deg, #FFE8E8 0%, rgba(255, 107, 107, 0.15) 100%);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
}

.lightbox-placeholder {
    width: 600px;
    height: 400px;
    background: var(--color-secondary);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-lighter);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    color: white;
    font-size: 2rem;
    padding: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.lightbox-close {
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 2.5rem;
}

.lightbox-prev {
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    color: var(--color-accent);
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.contact-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-details h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-details p {
    color: var(--color-text-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.social-link svg {
    width: 22px;
    height: 22px;
}

.social-link:hover {
    background: var(--color-accent);
    color: white;
    transform: translateY(-3px);
}

.contact-map {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.map-placeholder {
    height: 100%;
    min-height: 350px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #FFE8E8 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-lighter);
}

.map-placeholder p {
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-text);
    color: var(--color-primary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
}

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

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

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-normal);
}

.footer-social a svg {
    width: 18px;
    height: 18px;
}

.footer-social a:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

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

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .about-grid {
        gap: var(--spacing-lg);
    }

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

    .classes-grid .class-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-primary);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        opacity: 0;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .about-image {
        order: -1;
        max-width: 300px;
        margin: 0 auto;
    }

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

    .classes-grid .class-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }

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

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

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

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

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

    .btn {
        padding: 0.875rem 2rem;
    }

    .class-card {
        padding: var(--spacing-md);
    }
}