/*
 * War Memorial Hall - Professional Stylesheet
 * A registered charity serving the community of Frating, Essex
 * Charity Number: 245237
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
    /* Primary Colour Palette - Heritage Green */
    --colour-primary-900: #1a3a1f;
    --colour-primary-800: #224528;
    --colour-primary-700: #2a5030;
    --colour-primary-600: #325b38;
    --colour-primary-500: #3a6640;
    --colour-primary-400: #4d7a53;
    --colour-primary-300: #6b9470;
    --colour-primary-200: #9bb89e;
    --colour-primary-100: #ccdccd;
    --colour-primary-50: #e8f0e8;

    /* Secondary Colour Palette - Warm Bronze */
    --colour-secondary-500: #8b5a2b;
    --colour-secondary-50: #f5e8d5;

    /* Accent Colour - Memorial Gold */
    --colour-accent-500: #c9a227;
    --colour-accent-400: #d4b23d;
    --colour-accent-300: #dfc253;
    --colour-accent-hover: #b8920f;

    /* Neutral Palette */
    --colour-neutral-900: #1a1a1a;
    --colour-neutral-800: #2d2d2d;
    --colour-neutral-700: #404040;
    --colour-neutral-600: #525252;
    --colour-neutral-500: #666666;
    --colour-neutral-400: #858585;
    --colour-neutral-300: #a3a3a3;
    --colour-neutral-200: #d4d4d4;
    --colour-neutral-100: #e5e5e5;
    --colour-neutral-50: #f5f5f5;
    --colour-white: #ffffff;

    /* Semantic Colours */
    --colour-success: #2e7d32;
    --colour-error: #d32f2f;
    --colour-info: #0288d1;

    /* Typography */
    --font-family-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Georgia', 'Cambria', 'Times New Roman', serif;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;

    /* Layout - QUAN TRỌNG */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */

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

html {
    font-size: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--colour-neutral-800);
    background-color: var(--colour-white);
    min-height: 100vh;
}

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

/* ============================================
   ACCESSIBILITY
   ============================================ */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 9999;
    padding: var(--space-3) var(--space-4);
    background-color: var(--colour-primary-500);
    color: var(--colour-white);
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.skip-link:focus {
    top: 0;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--colour-primary-500);
    outline-offset: 2px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--colour-primary-800);
    margin-bottom: var(--space-4);
}

h1 { font-size: 2.25rem; }
h2 { 
    font-size: 1.875rem; 
    margin-top: var(--space-10);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--colour-primary-100);
}
h3 { 
    font-size: 1.5rem; 
    margin-top: var(--space-8);
    color: var(--colour-primary-700);
}
h4 { 
    font-size: 1.25rem; 
    margin-top: var(--space-6);
}

p {
    margin-bottom: var(--space-4);
}

a {
    color: var(--colour-primary-600);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--colour-primary-800);
}

ul, ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

li {
    margin-bottom: var(--space-2);
}

li::marker {
    color: var(--colour-primary-500);
}

address {
    font-style: normal;
}

/* ============================================
   HEADER & NAVIGATION - Full width background
   ============================================ */

.site-header {
    background-color: var(--colour-primary-800);
    color: var(--colour-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    width: 100%;
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--space-4) var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.site-title {
    font-family: var(--font-family-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.site-title a {
    color: var(--colour-white);
    text-decoration: none;
}

.site-title a:hover {
    color: var(--colour-accent-300);
}

/* Navigation */
.main-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin: 0;
    padding: 0;
}

.main-nav a {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--colour-white);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.main-nav a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--colour-white);
}

.main-nav a[aria-current="page"] {
    background-color: var(--colour-primary-600);
}

/* ============================================
   HERO SECTION - Full width background
   ============================================ */

.hero {
    background: linear-gradient(
        135deg,
        rgba(26, 58, 31, 0.92) 0%,
        rgba(58, 102, 64, 0.88) 50%,
        rgba(42, 80, 48, 0.9) 100%
    ),
    url('/assets/images/hall-exterior.jpg') center/cover no-repeat;
    color: var(--colour-white);
    width: 100%;
    padding: var(--space-16) var(--container-padding);
    text-align: center;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.75rem;
    color: var(--colour-white);
    margin-bottom: var(--space-4);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--space-8);
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
}

/* ============================================
   MAIN CONTENT - Centered container
   ============================================ */

main {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--space-8) var(--container-padding);
}

section {
    margin-bottom: var(--space-12);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background-color: var(--colour-accent-500);
    color: var(--colour-neutral-900);
    border-color: var(--colour-accent-500);
}

.btn-primary:hover {
    background-color: var(--colour-accent-hover);
    border-color: var(--colour-accent-hover);
    color: var(--colour-neutral-900);
}

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

.btn-secondary:hover {
    background-color: var(--colour-white);
    color: var(--colour-primary-800);
}

.btn-tertiary {
    background-color: var(--colour-primary-500);
    color: var(--colour-white);
    border-color: var(--colour-primary-500);
}

.btn-tertiary:hover {
    background-color: var(--colour-primary-600);
    border-color: var(--colour-primary-600);
}

/* ============================================
   CARDS
   ============================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.card {
    background: var(--colour-white);
    border: 1px solid var(--colour-neutral-200);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card h3 {
    font-size: 1.25rem;
    margin-top: 0;
    margin-bottom: var(--space-3);
    color: var(--colour-primary-700);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.card h3::before {
    content: '';
    display: block;
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--colour-accent-500), var(--colour-primary-500));
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.card p {
    color: var(--colour-neutral-600);
    margin-bottom: var(--space-4);
}

.card ul {
    margin-bottom: 0;
}

/* ============================================
   TABLES
   ============================================ */

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-6) 0;
    background: var(--colour-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.pricing-table thead {
    background: linear-gradient(135deg, var(--colour-primary-700) 0%, var(--colour-primary-800) 100%);
}

.pricing-table th {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    color: var(--colour-white);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-table td {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--colour-neutral-100);
    color: var(--colour-neutral-700);
}

.pricing-table tbody tr:hover {
    background-color: var(--colour-primary-50);
}

.pricing-table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================
   FORMS
   ============================================ */

.contact-form {
    max-width: 640px;
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--colour-neutral-800);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--colour-neutral-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--colour-neutral-800);
    background-color: var(--colour-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--colour-primary-500);
    box-shadow: 0 0 0 3px rgba(58, 102, 64, 0.15);
}

.form-group textarea {
    min-height: 160px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--colour-neutral-400);
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--colour-primary-500);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: 400;
    color: var(--colour-neutral-700);
    cursor: pointer;
}

/* ============================================
   MAP & MEDIA
   ============================================ */

.map-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-xl);
    margin: var(--space-6) 0;
    box-shadow: var(--shadow-md);
}

.map-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.image-gallery img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   FOOTER - Full width background
   ============================================ */

.site-footer {
    background: linear-gradient(180deg, var(--colour-primary-800) 0%, var(--colour-primary-900) 100%);
    color: var(--colour-white);
    padding: var(--space-12) var(--container-padding) var(--space-6);
    margin-top: var(--space-12);
    width: 100%;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
}

.footer-section h4 {
    color: var(--colour-accent-400);
    font-size: 1.125rem;
    margin-bottom: var(--space-4);
    font-family: var(--font-family-heading);
    border-bottom: none;
    padding-bottom: 0;
    margin-top: 0;
}

.footer-section p {
    color: var(--colour-neutral-200);
    line-height: 1.75;
    margin-bottom: var(--space-4);
}

.footer-section a {
    color: var(--colour-white);
    text-decoration: none;
}

.footer-section a:hover {
    color: var(--colour-accent-400);
    text-decoration: underline;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li {
    margin-bottom: var(--space-2);
}

.footer-bottom {
    max-width: var(--container-max-width);
    margin: var(--space-8) auto 0;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
}

.footer-bottom p {
    color: var(--colour-neutral-300);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* ============================================
   POLICY PAGE NAVIGATION
   ============================================ */

section nav[aria-label="Policy sections"] {
    background: var(--colour-primary-50);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    margin: var(--space-6) 0;
}

section nav[aria-label="Policy sections"] h2 {
    font-size: 1.125rem;
    margin: 0 0 var(--space-3) 0;
    padding-bottom: 0;
    border-bottom: none;
}

section nav[aria-label="Policy sections"] ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-2);
    margin: 0;
    padding: 0;
    list-style: none;
}

section nav[aria-label="Policy sections"] li {
    margin: 0;
}

section nav[aria-label="Policy sections"] a {
    display: block;
    padding: var(--space-2) var(--space-3);
    background: var(--colour-white);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--colour-primary-700);
}

section nav[aria-label="Policy sections"] a:hover {
    background: var(--colour-primary-100);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-4); }
.mt-2 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-4); }
.mb-2 { margin-bottom: var(--space-8); }

/* ============================================
   RESPONSIVE STYLES
   ============================================ */

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        text-align: center;
    }

    .main-nav ul {
        justify-content: center;
    }

    .hero {
        padding: var(--space-12) var(--container-padding);
        min-height: 350px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.125rem;
    }

    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

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

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

@media (max-width: 480px) {
    .main-nav ul {
        flex-direction: column;
        width: 100%;
    }

    .main-nav a {
        text-align: center;
        padding: var(--space-3);
    }

    .hero {
        min-height: 300px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .site-header,
    .site-footer,
    .btn,
    nav,
    .skip-link,
    .map-container,
    .hero {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    main {
        max-width: 100%;
        padding: 0;
    }

    h1, h2, h3, h4 {
        color: black;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}