/* ==========================================================================
   Dunkerton Parish Hall - Styles
   Mobile-First, Accessible, Custom CSS
   ========================================================================== */

/* CSS Variables */
:root {
  --colour-primary: #2d5a3d;
  --colour-primary-dark: #1e3d29;
  --colour-secondary: #c4a35a;
  --colour-accent: #8b4513;
  --colour-background: #faf8f5;
  --colour-surface: #ffffff;
  --colour-text: #2c2c2c;
  --colour-text-light: #5a5a5a;
  --colour-border: #e0ddd8;
  --colour-focus: #2563eb;
  --colour-error: #dc2626;
  --colour-success: #16a34a;
  --colour-warning: #d97706;

  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-heading: Georgia, 'Times New Roman', serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  --transition: 0.2s ease;
  --max-width: 1200px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--colour-text);
  background-color: var(--colour-background);
  -webkit-font-smoothing: antialiased;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--colour-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  z-index: 10000;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--spacing-sm);
  outline: 3px solid var(--colour-focus);
  outline-offset: 2px;
}

/* Focus Styles */
:focus-visible {
  outline: 3px solid var(--colour-focus);
  outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 0;
  color: var(--colour-primary-dark);
}

h1 { font-size: 2rem; margin-bottom: var(--spacing-md); }
h2 { font-size: 1.75rem; margin-bottom: var(--spacing-sm); }
h3 { font-size: 1.375rem; margin-bottom: var(--spacing-xs); }

p { margin-top: 0; margin-bottom: var(--spacing-sm); }

a {
  color: var(--colour-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

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

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

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  background: var(--colour-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-sm);
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--colour-primary);
  text-decoration: none;
}

.logo:hover {
  color: var(--colour-primary-dark);
}

/* Mobile Menu Button */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 2px solid var(--colour-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
}

.nav-toggle:hover {
  background: var(--colour-background);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}

.nav-toggle-icon {
  position: relative;
  width: 20px;
  height: 2px;
  background: var(--colour-text);
  transition: background var(--transition);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--colour-text);
  transition: transform var(--transition);
}

.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { bottom: -6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* Navigation Links */
.nav-links {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--colour-surface);
  box-shadow: var(--shadow-md);
  list-style: none;
  margin: 0;
  padding: var(--spacing-sm);
}

.nav-links.is-open {
  display: block;
}

.nav-links li {
  margin-bottom: var(--spacing-xs);
}

.nav-links a {
  display: block;
  padding: var(--spacing-sm);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  background: linear-gradient(rgba(45, 90, 61, 0.85), rgba(30, 61, 41, 0.9)),
              url('https://images.pexels.com/photos/12148264/pexels-photo-12148264.jpeg?auto=compress&cs=tinysrgb&w=1200');
  background-size: cover;
  background-position: center;
  color: white;
  padding: var(--spacing-xxl) var(--spacing-sm);
  text-align: center;
}

.hero h1 {
  color: white;
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.hero-strapline {
  font-size: 1.125rem;
  opacity: 0.95;
  margin-bottom: var(--spacing-lg);
}

.hero-buttons {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  min-height: 44px;
  min-width: 44px;
}

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

.btn-primary:hover {
  background: var(--colour-accent);
  border-color: var(--colour-accent);
  color: white;
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: white;
  border-color: white;
}

.btn-secondary:hover {
  background: white;
  color: var(--colour-primary);
  text-decoration: none;
}

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

.btn-outline:hover {
  background: var(--colour-primary);
  color: white;
  text-decoration: none;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--colour-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

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

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--colour-background);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
}

/* ==========================================================================
   Noticeboard
   ========================================================================== */

.noticeboard {
  background: #fffbeb;
  border-left: 4px solid var(--colour-secondary);
}

.noticeboard-item {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--colour-border);
}

.noticeboard-item:last-child {
  border-bottom: none;
}

.noticeboard-date {
  font-size: 0.875rem;
  color: var(--colour-text-light);
}

.noticeboard-priority-high {
  border-left-color: var(--colour-error);
  padding-left: var(--spacing-sm);
}

.noticeboard-priority-medium {
  border-left-color: var(--colour-warning);
  padding-left: var(--spacing-sm);
}

/* ==========================================================================
   Events
   ========================================================================== */

.event-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
  background: var(--colour-surface);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.is-active {
  background: var(--colour-primary);
  color: white;
  border-color: var(--colour-primary);
}

.event-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

.event-date {
  display: inline-block;
  background: var(--colour-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  min-width: 80px;
}

.event-category {
  display: inline-block;
  background: var(--colour-background);
  color: var(--colour-text-light);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.form-label .required {
  color: var(--colour-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: 1rem;
  border: 2px solid var(--colour-border);
  border-radius: var(--radius-sm);
  background: var(--colour-surface);
  transition: border-color var(--transition);
}

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

.form-input:invalid:not(:placeholder-shown),
.form-input[aria-invalid="true"] {
  border-color: var(--colour-error);
}

.form-error {
  color: var(--colour-error);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form-error.is-visible {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

/* ==========================================================================
   Gallery
   ========================================================================== */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xs);
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

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

.gallery-item:hover img {
  transform: scale(1.05);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.lightbox.is-open {
  display: flex;
}

.lightbox-content {
  max-width: 100%;
  max-height: 80vh;
  position: relative;
}

.lightbox-close {
  position: absolute;
  top: -44px;
  right: 0;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  border-radius: 50%;
}

.lightbox-prev { left: -60px; }
.lightbox-next { right: -60px; }

.lightbox-caption {
  color: white;
  text-align: center;
  margin-top: var(--spacing-sm);
}

/* ==========================================================================
   Cookie Banner
   ========================================================================== */

.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--colour-surface);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  padding: var(--spacing-md);
  z-index: 10001;
}

.cookie-banner.is-visible {
  display: block;
}

.cookie-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.cookie-banner h3 {
  margin-bottom: var(--spacing-xs);
}

.cookie-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--colour-primary-dark);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

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

.footer h3 {
  color: white;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

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

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
}

.footer-links a:hover {
  color: white;
  text-decoration: underline;
}

.footer-contact {
  font-style: normal;
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.2);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.85;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */

.toast {
  display: none;
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background: var(--colour-success);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10002;
}

.toast.is-visible {
  display: block;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

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

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

.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ==========================================================================
   Tablet Breakpoint (640px+)
   ========================================================================== */

@media (min-width: 640px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }

  .hero {
    padding: var(--spacing-xxl) var(--spacing-md);
  }

  .hero h1 {
    font-size: 2.75rem;
  }

  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }

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

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

  .cookie-buttons {
    flex-direction: row;
    justify-content: flex-end;
  }

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

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

  .event-card {
    grid-template-columns: auto 1fr;
    align-items: start;
  }

  .lightbox-nav {
    left: -70px;
    right: auto;
  }

  .lightbox-nav + .lightbox-nav {
    left: auto;
    right: -70px;
  }
}

/* ==========================================================================
   Desktop Breakpoint (1024px+)
   ========================================================================== */

@media (min-width: 1024px) {
  :root {
    --spacing-xl: 4rem;
  }

  h1 { font-size: 3rem; }

  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    box-shadow: none;
    background: transparent;
    gap: var(--spacing-xs);
    padding: 0;
  }

  .nav-links li {
    margin-bottom: 0;
  }

  .nav-links a {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
  }

  .header-inner {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .hero {
    padding: var(--spacing-xxl) var(--spacing-md);
  }

  .hero h1 {
    font-size: 3.25rem;
  }

  .hero-strapline {
    font-size: 1.25rem;
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .form-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .gallery-item {
    aspect-ratio: 4/3;
  }

  .event-filters {
    justify-content: center;
  }
}

/* ==========================================================================
   Large Desktop (1280px+)
   ========================================================================== */

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .gallery-grid {
    gap: var(--spacing-md);
  }
}