/* ===================================
   Beach Volleyball DK - Design System
   Warm sand/beige aesthetic with muted teal
   =================================== */

/* === CSS Variables === */
:root {
  /* Colors */
  --color-sand-light: #f5f1e8;
  --color-sand: #e8dfd0;
  --color-sand-dark: #d4c5ad;
  --color-teal: #5a9a92;
  --color-teal-dark: #4a8079;
  --color-teal-light: #7db8b0;
  --color-orange: #c89563;
  --color-orange-dark: #b07f4f;
  --color-gray: #4a4a4a;
  --color-gray-light: #8a8a8a;
  --color-white: #ffffff;
  --color-black: #1a1a1a;
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-large: 18px;
  --line-height: 1.6;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Layout */
  --container-width: 1200px;
  --border-radius: 12px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  background: #faf8f3;
}

body {
  font-family: var(--font-primary);
  line-height: var(--line-height);
  color: var(--color-gray);
  background: #faf8f3;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.1);
}

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

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a {
  color: var(--color-teal);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* === Container === */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* === Header & Navigation === */
.header {
  background: var(--color-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.nav-brand {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-teal);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-links a {
  color: var(--color-gray);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-links a:hover {
  background: var(--color-sand-light);
  color: var(--color-teal);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-gray);
  cursor: pointer;
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  text-decoration: none;
}

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

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

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

.btn-secondary:hover {
  background: var(--color-teal);
  color: var(--color-white);
}

.btn-disabled {
  background: var(--color-sand-dark);
  color: var(--color-gray-light);
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-disabled:hover {
  transform: none;
  box-shadow: none;
}

.btn-accent {
  background: var(--color-orange);
  color: var(--color-white);
}

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

/* === Hero Section === */
.hero {
  padding: var(--spacing-xl) 0;
  background: var(--color-sand-light);
  position: relative;
  background-image: url('/assets/img/bg-shape.png');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  position: relative;
  z-index: 1;
  padding: var(--spacing-lg);
}

.hero-text h1 {
  font-size: 2.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-black);
}

.hero-text p {
  font-size: var(--font-size-large);
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
}

.hero-image {
  text-align: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
}

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

/* Principles Section Background */
.section-principles {
  /*background-image: url('/assets/img/bg-principles.png');*/
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  position: relative;
  margin-top: calc(-1 * var(--spacing-xl));
}

/* Design line on same level as "Built on three principles" heading */
.section-principles .section-header h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.section-principles .section-header h2::before,
.section-principles .section-header h2::after {
  content: '';
  flex: 1;
  height: 3px;
  background: var(--color-teal);
  opacity: 0.3;
}

/* Tools Section Background */
.section-tools {
  background-image: url('/assets/img/bg-tools.png');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  position: relative;
  padding-top: var(--spacing-md);
}

/* Move "Our Tools" heading up slightly */
.section-tools .section-header {
  margin-top: calc(-1 * var(--spacing-sm));
}

/* Design line on same level as "Our Tools" heading */
.section-tools .section-header h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.section-tools .section-header h2::before,
.section-tools .section-header h2::after {
  content: '';
  flex: 1;
  height: 3px;
  background: var(--color-teal);
  opacity: 0.3;
}

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

.section-header h2 {
  font-size: 2.25rem;
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  font-size: var(--font-size-large);
  color: var(--color-gray-light);
  max-width: 700px;
  margin: 0 auto;
}

/* === Cards === */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.card {
  background: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

/* Horizontal layout for cards with card-left */
.card:has(.card-left) {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.card-left {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: stretch;
  flex-shrink: 0;
}

.card-image {
  width: 120px;
  min-width: 120px;
  height: 120px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}

.card-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.card-left .btn {
  width: 120px;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.card-content {
  flex: 1;
}

.card-icon {
  width: 60px;
  height: 60px;
  margin-bottom: var(--spacing-sm);
}

.card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
}

.card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-sand);
  color: var(--color-gray);
  border-radius: 20px;
  font-size: var(--font-size-small);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.card-tag.available {
  background: var(--color-teal-light);
  color: var(--color-white);
}

/* === Principle Cards === */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.principle-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(0, 0, 0, 0.04);
  background-image: url('/assets/img/bg-tools.png');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  position: relative;
}

.principle-card h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.principle-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--color-sand-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.principle-icon img {
  width: 48px;
  height: 48px;
}

/* === PWA Install Hint === */
.pwa-hint {
  background: var(--color-teal-light);
  color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-top: var(--spacing-lg);
}

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

.pwa-hint ul {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

/* === Footer === */
.footer {
  background: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.08);
}

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

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

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: var(--color-gray);
  font-size: var(--font-size-small);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-sand);
  color: var(--color-gray-light);
  font-size: var(--font-size-small);
}

/* === Legal Pages === */
.legal-page {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
  box-shadow: var(--shadow);
}

.legal-page h1 {
  margin-bottom: var(--spacing-md);
}

.legal-page h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal-page h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.legal-page ul {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.legal-placeholder {
  background: var(--color-sand-light);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: monospace;
  font-weight: 600;
}

/* === Contact Page === */
.contact-info {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  margin: var(--spacing-lg) 0;
}

.contact-email {
  font-size: 1.5rem;
  color: var(--color-teal);
  font-weight: 600;
  margin: var(--spacing-md) 0;
}

/* === Responsive Design === */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow);
    padding: var(--spacing-sm);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
  }
  
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .principles {
    grid-template-columns: 1fr;
  }
  
  .cards {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
}

@media (max-width: 480px) {
  :root {
    --font-size-base: 14px;
  }
  
  .hero-text h1 {
    font-size: 1.75rem;
  }
  
  .section-header h2 {
    font-size: 1.75rem;
  }
}