/* Critical CSS */
:root {
    --color-background: #FAFAFA;
    --color-text: #000000;
    --color-primary: #1a237e;
    --color-secondary: #283593;
    --color-border: #e0e0e0;
    --spacing-unit: 1rem;
    --transition-speed: 0.3s;
}

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

/* Base styles */
body {
    font-family: 'IBM Plex Sans', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    width: min(100% - 2rem, 1200px);
    margin-inline: auto;
    padding-inline: var(--spacing-unit);
}

/* Typography */
h1, h2, h3 {
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 500;
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 500;
}

p {
    margin-bottom: 1rem;
}

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

/* Header */
.main-header {
    background-color: white;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    contain: layout style paint;
}

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

.logo {
    transition: opacity var(--transition-speed) ease;
    will-change: opacity;
}

.logo:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

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

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

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: white;
    padding: 1rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.05);
    contain: content;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-weight: 500;
    text-align: center;
    min-width: 120px;
    transition: transform 0.2s ease;
    will-change: transform;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: clamp(3rem, 10vh, 6rem) 0;
    text-align: center;
    background-color: white;
    position: relative;
    contain: content;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
}

/* Grid Layouts */
.about-grid,
.courses-grid,
.events-grid,
.contact-grid {
    display: grid;
    gap: 2rem;
    margin: 2rem 0;
}

.about-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 500px), 1fr));
    align-items: center;
}

.courses-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

.contact-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 3rem;
}

/* Cards */
.course-card,
.event-card {
    background-color: white;
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    will-change: transform, box-shadow;
    contain: content;
}

.course-card:hover,
.event-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.course-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 1rem;
}

/* Forms */
.contact-form {
    display: grid;
    gap: 1.5rem;
}

.form-group {
    display: grid;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: inherit;
    transition: border-color var(--transition-speed) ease;
    will-change: border-color;
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
.main-footer {
    background-color: white;
    border-top: 1px solid var(--color-border);
    padding: 3rem 0;
    margin-top: 4rem;
    contain: content;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

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

/* Sections */
section {
    padding: clamp(3rem, 8vh, 5rem) 0;
    contain: content;
}

section:nth-child(even) {
    background-color: white;
}

/* Legal Pages */
.privacy-policy,
.cookies-policy,
.terms {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 0;
}

.privacy-policy h2,
.cookies-policy h2,
.terms h2 {
    margin-top: 2rem;
}

.privacy-policy ul,
.cookies-policy ul,
.terms ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

address {
    font-style: normal;
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: var(--color-background);
    border-radius: 4px;
}

/* Print styles */
@media print {
    .main-header,
    .main-footer,
    .cookie-banner {
        display: none;
    }
    
    body {
        background: none;
        color: black;
    }
    
    a {
        text-decoration: none;
        color: black;
    }
    
    .container {
        width: 100%;
        max-width: none;
        padding: 0;
        margin: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: clamp(2rem, 6vh, 4rem) 0;
    }
    
    .footer-grid {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding-inline: 1rem;
    }
    
    .course-card,
    .event-card {
        padding: 1rem;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Heritage Sites Section */
.heritage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.heritage-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-speed) ease;
}

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

.heritage-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.heritage-card h3,
.heritage-card p {
    padding: 1rem;
    margin: 0;
}

/* British Cuisine Section */
.cuisine-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
    gap: 3rem;
    align-items: center;
    margin: 2rem 0;
}

.cuisine-content {
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.cuisine-list {
    list-style: none;
    margin: 1.5rem 0;
}

.cuisine-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

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

.cuisine-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Royal Heritage Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 3rem auto;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background: var(--color-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin: 2rem 0;
    width: 50%;
    padding-right: 2rem;
}

.timeline-item:nth-child(even) {
    margin-left: auto;
    padding-right: 0;
    padding-left: 2rem;
}

.timeline-content {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -8px;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(even) .timeline-content::before {
    right: auto;
    left: -8px;
}

/* Cultural Festivals Section */
.festivals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.festival-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform var(--transition-speed) ease;
}

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

.festival-date {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* British Innovation Section */
.innovation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.innovation-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-speed) ease;
}

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

.innovation-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.innovation-card ul {
    list-style: none;
    margin: 1rem 0;
}

.innovation-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.innovation-card li:last-child {
    border-bottom: none;
}

/* Responsive adjustments for new sections */
@media (max-width: 768px) {
    .timeline::before {
        left: 0;
    }

    .timeline-item {
        width: 100%;
        padding-left: 2rem;
        padding-right: 0;
    }

    .timeline-item:nth-child(even) {
        padding-left: 2rem;
    }

    .timeline-content::before {
        left: -8px;
        right: auto;
    }

    .cuisine-grid {
        gap: 2rem;
    }

    .cuisine-content {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .heritage-card img,
    .cuisine-image img {
        height: 200px;
    }

    .innovation-card,
    .festival-card {
        padding: 1.5rem;
    }
}

/* Print styles for new sections */
@media print {
    .heritage-card,
    .cuisine-content,
    .timeline-content,
    .festival-card,
    .innovation-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }
}