/*
* Velecentrak - Por De Bra Studio
* Main Stylesheet
* Author: Claude
* Version: 1.0
*/

/* ============================
   Table of Contents
   ============================
   1. Base Styles / Reset
   2. Typography
   3. Layout & Grid
   4. Header & Navigation
   5. Buttons & Forms
   6. Hero Section
   7. About Section
   8. Classes Section
   9. Instructors Section
   10. Schedule Section
   11. Gallery Section
   12. Testimonials Section
   13. Contact Section
   14. Footer
   15. Legal Pages
   16. Success Page
   17. Animations & Transitions
   18. Utility Classes
   19. Media Queries
*/

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

:root {
    --color-background: #FFF7FA;
    --color-primary: #E86A92;
    --color-secondary: #CBAACB;
    --color-text: #2E2E2E;
    --color-light: #FFFFFF;
    --color-dark: #333333;
    --color-grey: #F5F5F5;
    --color-border: #EEEEEE;
    
    --font-primary: 'Playfair Display', serif;
    --font-secondary: 'Montserrat', sans-serif;
    
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
    
    --shadow-small: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 10px 25px rgba(0, 0, 0, 0.1);
    
    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --border-radius-large: 16px;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-secondary);
}

ul {
    list-style: none;
}

section {
    padding: var(--spacing-lg) 0;
    position: relative;
}

/* ============================
   2. Typography
   ============================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title h2 {
    display: inline-block;
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.title-decoration {
    margin: 0 auto;
    width: 100px;
    height: 10px;
    position: relative;
}

/* ============================
   3. Layout & Grid
   ============================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    flex: 1;
    padding: 0 15px;
}

/* ============================
   4. Header & Navigation
   ============================ */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 247, 250, 0.95);
    backdrop-filter: blur(5px);
    box-shadow: var(--shadow-small);
    transition: all var(--transition-medium);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    height: 80px;
}

.logo {
    z-index: 1001;
}

.logo img {
    height: 50px;
    width: auto;
    transition: height var(--transition-fast);
}

.main-nav {
    display: flex;
    align-items: center;
}

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

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-menu a:hover::after,
.nav-menu a:focus::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

/* Header scroll state */
.header-scrolled {
    background-color: rgba(255, 247, 250, 0.98);
    box-shadow: var(--shadow-medium);
}

.header-scrolled .logo img {
    height: 40px;
}

/* ============================
   5. Buttons & Forms
   ============================ */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-small);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-primary);
    color: var(--color-light);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-sm);
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input,
textarea,
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

textarea {
    resize: vertical;
    min-height: 100px;
}

/* Checkbox styling */
.checkbox-container {
    display: flex;
    align-items: flex-start;
    position: relative;
    padding-left: 30px;
    cursor: pointer;
    font-size: 1rem;
    user-select: none;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
    transition: all var(--transition-fast);
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--color-primary);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* ============================
   6. Hero Section
   ============================ */
.hero-section {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background-image: url('../images/img00.jpg');
    background-size: cover;
    background-position: top center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 0;
    margin-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--color-light);
    max-width: 800px;
    padding: var(--spacing-md);
}

.hero-content h1 {
    font-size: 4.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-light);
}

.hero-content h2 {
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1.5rem;
    color: var(--color-light);
    opacity: 0.9;
}

.hero-content .tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    font-family: var(--font-primary);
    font-style: italic;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.decorative-element {
    margin-top: var(--spacing-md);
    opacity: 0.7;
}

/* ============================
   7. About Section
   ============================ */
.about-section {
    background-color: var(--color-light);
    padding: var(--spacing-xl) 0;
}

.about-content {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
    position: relative;
}

.about-image img {
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-medium);
}

.about-image .image-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 15px;
    left: 15px;
    border: 2px solid var(--color-secondary);
    border-radius: var(--border-radius-medium);
    z-index: -1;
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feature {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-small);
    background-color: var(--color-background);
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-fast);
}

.feature:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-xs);
}

.feature h3 {
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

/* ============================
   8. Classes Section
   ============================ */
.classes-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

.classes-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--color-light);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-small);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-light);
    border-color: var(--color-primary);
}

.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
    animation: fadeIn var(--transition-medium);
}

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

.class-card {
    display: flex;
    background-color: var(--color-light);
    border-radius: var(--border-radius-medium);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.class-image {
    flex: 1;
    min-height: 400px;
    overflow: hidden;
}

.class-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-fast);
}

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

.class-info {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.class-details {
    margin: var(--spacing-sm) 0;
}

.class-details li {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.class-details .icon {
    width: 20px;
    height: 20px;
    margin-right: 0.5rem;
}

.class-info .btn-primary {
    align-self: flex-start;
    margin-top: auto;
}

/* ============================
   9. Instructors Section
   ============================ */
.instructors-section {
    background-color: var(--color-light);
    padding: var(--spacing-xl) 0;
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.instructor-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-medium);
    overflow: hidden;
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-fast);
    position: relative;
}

.instructor-card:hover {
    transform: translateY(-10px);
}

.instructor-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

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

.social-links {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: flex;
    gap: 0.5rem;
}

.instructor-info-btn {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.instructor-info-btn:hover {
    background-color: var(--color-secondary);
}

.instructor-info {
    padding: var(--spacing-sm);
    text-align: center;
}

.instructor-title {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 0;
}

.instructor-bio {
    padding: var(--spacing-sm);
    background-color: rgba(203, 170, 203, 0.1);
    border-top: 1px solid var(--color-secondary);
    font-size: 0.9rem;
}

/* ============================
   10. Schedule Section
   ============================ */
.schedule-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

.schedule-navigation {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.schedule-nav-btn {
    padding: 0.5rem 1rem;
    background-color: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.schedule-nav-btn.active,
.schedule-nav-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-light);
    border-color: var(--color-primary);
}

.schedule-day {
    display: none;
}

.schedule-day.active {
    display: block;
    animation: fadeIn var(--transition-medium);
}

.schedule-item {
    display: flex;
    align-items: center;
    background-color: var(--color-light);
    border-radius: var(--border-radius-small);
    margin-bottom: 1rem;
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-fast);
}

.schedule-item:hover {
    transform: translateX(5px);
}

.schedule-time {
    flex: 0 0 150px;
    font-weight: 600;
    color: var(--color-primary);
}

.schedule-class {
    flex: 1;
}

.schedule-class h4 {
    margin-bottom: 0.25rem;
}

.schedule-class p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: var(--color-text);
    opacity: 0.8;
}

.schedule-book {
    padding: 0.5rem 1rem;
    background-color: var(--color-primary);
    color: var(--color-light);
    border-radius: var(--border-radius-small);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.schedule-book:hover {
    background-color: var(--color-secondary);
    color: var(--color-light);
}

/* ============================
   11. Gallery Section
   ============================ */
.gallery-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-sm);
}

.gallery-item {
    position: relative;
    height: 300px;
    overflow: hidden;
    border-radius: var(--border-radius-small);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(232, 106, 146, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.gallery-info {
    text-align: center;
    color: var(--color-light);
    padding: var(--spacing-sm);
    transform: translateY(20px);
    transition: transform var(--transition-medium);
}

.gallery-info h3 {
    color: var(--color-light);
    margin-bottom: 0.5rem;
}

.gallery-info p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

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

.gallery-item:hover .gallery-info {
    transform: translateY(0);
}

/* ============================
   12. Testimonials Section
   ============================ */
.testimonials-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-slide {
    display: none;
    animation: fadeIn var(--transition-medium);
}

.testimonial-slide.active {
    display: block;
}

.testimonial-content {
    background-color: var(--color-light);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-medium);
    text-align: center;
    position: relative;
}

.testimonial-quote {
    position: relative;
    padding-top: var(--spacing-md);
}

.quote-icon {
    width: 40px;
    height: 40px;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.testimonial-author {
    margin-top: var(--spacing-md);
}

.testimonial-author h4 {
    margin-bottom: 0.25rem;
    color: var(--color-primary);
}

.testimonial-author p {
    margin-bottom: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

.testimonial-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.testimonial-prev,
.testimonial-next {
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
}

.testimonial-dots {
    display: flex;
    gap: 0.5rem;
    margin: 0 var(--spacing-sm);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.dot.active,
.dot:hover {
    background-color: var(--color-primary);
}

/* ============================
   13. Contact Section
   ============================ */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light);
}

.contact-content {
    display: flex;
    gap: var(--spacing-lg);
}

.contact-info {
    flex: 1;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.info-icon {
    width: 24px;
    height: 24px;
    margin-right: var(--spacing-sm);
}

.contact-form-container {
    flex: 1;
}

.contact-form {
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-small);
}

/* ============================
   14. Footer
   ============================ */
.footer {
    background-color: var(--color-dark);
    color: var(--color-light);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    flex: 1;
    min-width: 250px;
}

.footer-logo img {
    max-width: 200px;
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-column {
    flex: 1;
    min-width: 150px;
}

.footer-column h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: var(--color-light);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-column a:hover {
    opacity: 1;
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    opacity: 0.7;
}

/* ============================
   15. Legal Pages
   ============================ */
.legal-section {
    padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-xl);
}

.legal-content {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-small);
}

.last-updated {
    margin-bottom: var(--spacing-md);
    opacity: 0.7;
    text-align: right;
    font-size: 0.9rem;
}

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

.legal-section-content h2 {
    font-size: 1.75rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.5rem;
    margin-bottom: var(--spacing-sm);
}

.legal-section-content h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-md);
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

.legal-section-content ul,
.legal-section-content ol {
    margin-left: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.legal-section-content ul li,
.legal-section-content ol li {
    margin-bottom: 0.5rem;
    list-style-type: disc;
}

.cookies-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-sm) 0;
}

.cookies-table th,
.cookies-table td {
    padding: 0.75rem;
    text-align: left;
    border: 1px solid var(--color-border);
}

.cookies-table th {
    background-color: rgba(203, 170, 203, 0.1);
    font-weight: 600;
}

.cookies-table tr:nth-child(even) {
    background-color: var(--color-grey);
}

/* ============================
   16. Success Page
   ============================ */
.success-section {
    padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-xl);
    text-align: center;
}

.success-content {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-small);
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
}

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

.success-details {
    padding: var(--spacing-sm);
    background-color: rgba(232, 106, 146, 0.1);
    border-radius: var(--border-radius-small);
    margin: var(--spacing-md) 0;
}

.success-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* ============================
   17. Animations & Transitions
   ============================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideDown {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideLeft {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideRight {
    from { transform: translateX(-30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.fade-in {
    animation: fadeIn var(--transition-medium) both;
}

.slide-up {
    animation: slideUp var(--transition-medium) both;
    animation-delay: 0.2s;
}

.slide-down {
    animation: slideDown var(--transition-medium) both;
    animation-delay: 0.2s;
}

.slide-left {
    animation: slideLeft var(--transition-medium) both;
    animation-delay: 0.2s;
}

.slide-right {
    animation: slideRight var(--transition-medium) both;
    animation-delay: 0.2s;
}

.fade-in-delayed {
    animation: fadeIn var(--transition-medium) both;
    animation-delay: 0.4s;
}

.slide-up-delayed {
    animation: slideUp var(--transition-medium) both;
    animation-delay: 0.6s;
}

.pulse {
    animation: pulse 2s infinite;
}

/* Back to top button */
#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: var(--color-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-medium);
    z-index: 99;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background-color: var(--color-secondary);
    transform: translateY(-5px);
}

/* ============================
   18. Utility Classes
   ============================ */
.text-center {
    text-align: center;
}

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

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

.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-secondary);
}

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

.bg-secondary {
    background-color: var(--color-secondary);
}

.bg-light {
    background-color: var(--color-light);
}

.bg-dark {
    background-color: var(--color-dark);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }
.mt-5 { margin-top: 4rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 3rem; }
.mb-5 { margin-bottom: 4rem; }

.px-1 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-2 { padding-left: 1rem; padding-right: 1rem; }
.px-3 { padding-left: 2rem; padding-right: 2rem; }
.px-4 { padding-left: 3rem; padding-right: 3rem; }
.px-5 { padding-left: 4rem; padding-right: 4rem; }

.py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 2rem; padding-bottom: 2rem; }
.py-4 { padding-top: 3rem; padding-bottom: 3rem; }
.py-5 { padding-top: 4rem; padding-bottom: 4rem; }

/* ============================
   19. Media Queries
   ============================ */
/* Mobile Navigation */
@media (max-width: 992px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        flex-direction: column;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        padding: 100px var(--spacing-md) var(--spacing-md);
        background-color: var(--color-background);
        box-shadow: var(--shadow-large);
        transition: right var(--transition-medium);
        z-index: 1000;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .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(7px, -6px);
    }
    
    /* Body lock when menu is open */
    body.menu-open {
        overflow: hidden;
    }
}

/* Tablets and smaller */
@media (max-width: 768px) {
    h1 {
        font-size: 2.8rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .about-content, 
    .contact-content {
        flex-direction: column;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }
    
    .class-card {
        flex-direction: column;
    }
    
    .class-image {
        min-height: 200px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .schedule-item {
        flex-wrap: wrap;
    }
    
    .schedule-time {
        flex: 0 0 100%;
        margin-bottom: 0.5rem;
    }
    
    .schedule-book {
        margin-top: 0.5rem;
    }
}

/* Small devices */
@media (max-width: 576px) {
    section {
        padding: var(--spacing-md) 0;
    }
    
    .hero-section {
        min-height: 500px;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content h2 {
        font-size: 1.25rem;
    }
    
    .about-features {
        flex-direction: column;
    }
    
    .testimonial-content {
        padding: var(--spacing-sm);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* Extra small devices */
@media (max-width: 375px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
}