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

:root {
    /* British theme colors */
    --primary-blue: #012169;
    --primary-red: #C8102E;
    --accent-blue: #003B7A;
    --accent-red: #E03C31;
    
    /* Neutral colors */
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #E9ECEF;
    --medium-gray: #6C757D;
    --dark-gray: #343A40;
    --black: #000000;
    
    /* WhatsApp green */
    --whatsapp-green: #25D366;
    --whatsapp-dark: #128C7E;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    --font-size-xxxl: 48px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--primary-blue);
}

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

.nav-link {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-blue);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-blue);
    transition: var(--transition-fast);
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--light-gray);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--medium-gray);
    font-weight: 600;
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.lang-btn:hover {
    color: var(--primary-blue);
}

.lang-btn.active {
    color: var(--primary-blue);
}

.lang-divider {
    color: var(--light-gray);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    background-image: url('../images/hero-image.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--primary-blue);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 33, 105, 0.7) 0%, rgba(0, 0, 0, 0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-xxl) var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-xxxl);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    text-shadow: 3px 3px 8px rgba(0,0,0,0.8), 1px 1px 3px rgba(0,0,0,0.9);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.8), 1px 1px 3px rgba(0,0,0,0.9);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

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

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

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

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

.whatsapp-icon {
    width: 24px;
    height: 24px;
}

/* Sections */
.section {
    padding: var(--spacing-xxl) 0;
}

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

.section-dark {
    background-color: var(--off-white);
}

.section-cta {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
    text-align: center;
}

.section-title {
    font-size: var(--font-size-xxl);
    font-weight: bold;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-cta .section-title {
    color: var(--white);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--medium-gray);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* About Section */
.about-content {
    display: grid;
    gap: var(--spacing-xl);
}

.about-intro {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.learning-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.learning-column {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 2px solid var(--light-gray);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.learning-column:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.column-title {
    font-size: var(--font-size-xl);
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    text-align: center;
    border-bottom: 3px solid var(--primary-red);
    padding-bottom: var(--spacing-sm);
}

.learning-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.learning-list li {
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    border-bottom: 1px solid var(--light-gray);
}

.learning-list li:last-child {
    border-bottom: none;
}

.instructor-card {
    background-color: var(--off-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.instructor-photo {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.instructor-photo img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.instructor-info h3 {
    font-size: var(--font-size-xl);
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.instructor-info p {
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.instructor-highlights {
    display: grid;
    gap: var(--spacing-sm);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.highlight-icon {
    color: var(--whatsapp-green);
    font-weight: bold;
    font-size: var(--font-size-lg);
}

/* Schedule Section */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.schedule-grid > .schedule-card {
    width: 100%;
    max-width: 100%;
}

.schedule-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.schedule-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.schedule-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.schedule-card h3 {
    font-size: var(--font-size-xl);
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.schedule-details {
    display: grid;
    gap: var(--spacing-md);
    text-align: left;
}

.schedule-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-sm);
    background-color: var(--off-white);
    border-radius: var(--radius-sm);
    min-height: 50px;
}

.schedule-item span:last-child {
    text-align: right;
    flex: 1;
    margin-left: var(--spacing-sm);
}

.schedule-label {
    font-weight: 600;
    color: var(--medium-gray);
}

.schedule-btn {
    margin-top: auto;
    padding-top: var(--spacing-lg);
    width: 100%;
    text-align: center;
    background-color: var(--whatsapp-green);
    color: var(--white);
}

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

/* Reviews Section */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.review-card {
    background-color: var(--off-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

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

.review-stars {
    color: #FFB800;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.review-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.review-text {
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.review-author {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.review-author strong {
    color: var(--primary-blue);
}

.review-author span {
    color: var(--medium-gray);
    font-size: var(--font-size-sm);
}

/* CTA Section */
.cta-text {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

/* Footer */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-info h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.footer-info p {
    color: var(--light-gray);
}

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

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: all var(--transition-fast);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--light-gray);
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-xxxl: 32px;
        --font-size-xxl: 24px;
        --font-size-xl: 20px;
        --font-size-lg: 16px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-xl) 0;
        gap: var(--spacing-md);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .language-switcher {
        border-left: none;
        border-top: 1px solid var(--light-gray);
        padding-top: var(--spacing-md);
        padding-left: 0;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: var(--font-size-xxl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .schedule-grid {
        grid-template-columns: 1fr;
    }
    
    .schedule-grid > .schedule-card:nth-child(4),
    .schedule-grid > .schedule-card:nth-child(5) {
        grid-column: 1;
        margin-left: 0;
        margin-right: 0;
        justify-self: stretch;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .learning-columns {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .instructor-card {
        padding: var(--spacing-lg);
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .instructor-photo {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .btn-large {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-base);
    }
    
    .schedule-card,
    .review-card {
        padding: var(--spacing-lg);
    }
}

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

.section {
    animation: fadeIn 0.6s ease-out;
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .btn {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}