/* === SDG 11 Eindhoven - Modern One-Page Website === */

/* === COLOR PALETTE === */
:root {
  /* Colors */
  --primary-blue: #3b82f6;
  --primary-green: #10b981;
  --secondary-blue: #0369a1;
  --secondary-green: #059669;
  --light-blue: #dbeafe;
  --light-green: #dcfce7;

  /* Neutral */
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-lighter: #f1f5f9;
  --border-color: #e2e8f0;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition: all 0.3s ease;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-white);
  color: var(--text-dark);
  line-height: 1.6;
}

body {
  margin: 0;
}

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

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--secondary-blue);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2, .section-title {
  font-size: 2rem;
  color: var(--text-dark);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.2rem;
}

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

.lead {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--text-dark);
}

.text-muted {
  color: var(--text-muted);
}

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

.small {
  font-size: 0.875rem;
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

.grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

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

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }

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

.span-2 {
  grid-column: span 2;
}

/* === UTILITIES === */
.mt-3 {
  margin-top: var(--space-lg);
}

.mt-4 {
  margin-top: 2rem;
}

.mt-5 {
  margin-top: 2.5rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

/* === HEADER & NAVIGATION === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.brand-mark {
  font-size: 1.5rem;
}

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

.nav a {
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 500;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
  padding-bottom: 0.25rem;
}

.nav a:hover,
.nav a.active {
  color: var(--primary-blue);
  border-bottom-color: var(--primary-blue);
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
}

/* === HERO SECTION === */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f1f5f9 0%, #e0f2fe 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.5) 0%, rgba(16, 185, 129, 0.5) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-title {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  font-weight: 800;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
  opacity: 0.95;
}

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

@media (max-width: 768px) {
  .hero {
    min-height: 400px;
  }

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

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

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: white;
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background-color: var(--primary-green);
  color: white;
  box-shadow: var(--shadow-md);
}

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

.btn-large {
  padding: var(--space-lg) 2.5rem;
  font-size: 1.1rem;
}

/* === SECTIONS === */
.section {
  padding: var(--space-2xl) 0;
}

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

.section-accent {
  background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
}

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

/* === CARDS === */
.card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

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

.card-accent {
  background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
  border-color: var(--primary-blue);
}

.card-title {
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
  color: var(--primary-blue);
}

.card-image {
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.card-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition);
}

.card-image:hover img {
  transform: scale(1.05);
}

.card-minimal {
  text-align: center;
  padding: var(--space-lg);
}

.card-minimal h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-sm);
}

/* === STATS BOX === */
.stats-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
  background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
  border-radius: 0.75rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
}

/* === LISTS === */
.bullets,
.bullets-small {
  list-style: none;
  padding-left: 0;
}

.bullets li,
.bullets-small li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-lg);
  position: relative;
}

.bullets li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-blue);
  font-weight: bold;
}

.bullets-small {
  font-size: 0.95rem;
}

/* === PLAN CARDS === */
.plan-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.plan-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
  transform: translateY(-4px);
}

.plan-icon {
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.plan-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  display: block;
}

.plan-card h3 {
  color: var(--primary-blue);
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.construction-image {
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.construction-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* === TABLE === */
.table-responsive {
  overflow-x: auto;
  margin-bottom: var(--space-xl);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.data-table th {
  background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
  padding: var(--space-md);
  text-align: left;
  font-weight: 700;
  color: var(--primary-blue);
  border-bottom: 2px solid var(--border-color);
}

.data-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
  background-color: var(--bg-light);
}

/* === TIMELINE === */
.timeline-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

@media (min-width: 768px) {
  .timeline-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.timeline-item {
  padding: var(--space-lg);
  background-color: var(--bg-white);
  border: 2px solid var(--primary-blue);
  border-radius: 0.75rem;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: -12px;
  left: var(--space-lg);
  width: 24px;
  height: 24px;
  background-color: var(--primary-blue);
  border: 3px solid var(--bg-light);
  border-radius: 50%;
}

.timeline-marker {
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: var(--space-md);
  display: block;
}

.timeline-content ul li {
  margin-bottom: var(--space-sm);
}

/* === QUOTES === */
.quotes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

@media (min-width: 768px) {
  .quotes-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.quote {
  background-color: var(--bg-white);
  padding: var(--space-xl);
  border-left: 4px solid var(--primary-blue);
  border-radius: 0.5rem;
  font-size: 1.1rem;
  font-style: italic;
  line-height: 1.8;
  box-shadow: var(--shadow-sm);
}

.quote p {
  margin-bottom: var(--space-md);
}

.quote footer {
  font-style: normal;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* === INVOLVEMENT === */
.involvement-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

@media (min-width: 768px) {
  .involvement-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .involvement-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.involvement-card {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  transition: var(--transition);
}

.involvement-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.involvement-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  display: block;
}

.involvement-card h3 {
  color: var(--primary-blue);
  margin-bottom: var(--space-sm);
}

/* === FOOTER === */
.footer {
  background-color: var(--text-dark);
  color: white;
  padding: var(--space-2xl) 0;
  margin-top: var(--space-2xl);
}

.footer-text {
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
}

.footer-text a {
  color: var(--primary-green);
  text-decoration: underline;
}

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

/* === RESPONSIVE === */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2, .section-title {
    font-size: 1.5rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: span 1;
  }

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

  .nav {
    gap: var(--space-md);
  }

  .stats-box {
    grid-template-columns: 1fr 1fr;
  }

  .hero-cta {
    gap: var(--space-sm);
  }

  .btn {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }
}

/* === SMOOTH SCROLL === */
html {
  scroll-behavior: smooth;
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* === RIPPLE EFFECT === */
.btn {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  transform: scale(0);
  animation: rippleAnimation 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleAnimation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}

/* === FOCUS STATES === */
.btn:focus,
.nav a:focus,
a:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* === ROADMAP TIMELINE STYLES === */
.roadmap-timeline {
  position: relative;
}

.roadmap-phase {
  position: relative;
  margin-bottom: 3rem;
  padding: 2rem;
  background-color: var(--bg-white);
  border-left: 5px solid var(--primary-blue);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-md);
  animation: slideInUp 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.roadmap-phase.phase-1 {
  animation-delay: 0.2s;
  border-left-color: var(--primary-blue);
}

.roadmap-phase.phase-2 {
  animation-delay: 0.5s;
  border-left-color: var(--primary-green);
}

.roadmap-phase.phase-3 {
  animation-delay: 0.8s;
  border-left-color: var(--secondary-blue);
}

.phase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-color);
}

.phase-title {
  margin: 0;
  color: var(--primary-blue);
  font-size: 1.3rem;
}

.phase-years {
  background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-weight: 700;
  color: var(--primary-blue);
  font-size: 0.95rem;
}

.phase-goal {
  margin-bottom: 1rem;
  color: var(--text-dark);
  font-size: 1.05rem;
}

.phase-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
  padding: 1rem;
  background-color: var(--bg-light);
  border-radius: 0.5rem;
}

.metric-item {
  text-align: center;
  animation: scaleIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
  transition: transform 0.3s ease;
  cursor: pointer;
}

.roadmap-phase.phase-1 .metric-item:nth-child(1) { animation-delay: 0.4s; }
.roadmap-phase.phase-1 .metric-item:nth-child(2) { animation-delay: 0.5s; }
.roadmap-phase.phase-1 .metric-item:nth-child(3) { animation-delay: 0.6s; }
.roadmap-phase.phase-1 .metric-item:nth-child(4) { animation-delay: 0.7s; }

.roadmap-phase.phase-2 .metric-item:nth-child(1) { animation-delay: 0.7s; }
.roadmap-phase.phase-2 .metric-item:nth-child(2) { animation-delay: 0.8s; }
.roadmap-phase.phase-2 .metric-item:nth-child(3) { animation-delay: 0.9s; }
.roadmap-phase.phase-2 .metric-item:nth-child(4) { animation-delay: 1s; }

.roadmap-phase.phase-3 .metric-item:nth-child(1) { animation-delay: 1s; }
.roadmap-phase.phase-3 .metric-item:nth-child(2) { animation-delay: 1.1s; }
.roadmap-phase.phase-3 .metric-item:nth-child(3) { animation-delay: 1.2s; }
.roadmap-phase.phase-3 .metric-item:nth-child(4) { animation-delay: 1.3s; }

.metric-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  font-weight: 600;
}

.metric-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.metric-change {
  display: block;
  font-size: 0.9rem;
  color: var(--primary-green);
  font-weight: 600;
  margin-top: 0.25rem;
}

.phase-content h4 {
  color: var(--primary-blue);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.phase-outcomes {
  margin-top: 1.5rem;
  padding: 1rem;
  background-color: #f0f9ff;
  border-left: 4px solid var(--primary-green);
  border-radius: 0.5rem;
  font-size: 0.95rem;
}

.timeline-connector {
  position: relative;
  height: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.5s both;
}

.connector-line {
  position: absolute;
  top: 0;
  width: 3px;
  height: 0;
  background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-green) 100%);
  animation: drawLine 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.5s both;
}

.connector-label {
  position: absolute;
  bottom: 5px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  background-color: var(--bg-white);
  padding: 0 0.5rem;
}

/* === ANIMATIONS === */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes drawLine {
  from {
    height: 0;
  }
  to {
    height: 60px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* === SCROLL PROGRESS BAR === */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-green) 100%);
  z-index: 9999;
  width: 0;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* === ANIMATION HELPER CLASSES === */
.animated {
  animation-duration: 0.6s;
  animation-timing-function: ease-out;
  animation-fill-mode: forwards;
}

.animated.fadeInUp {
  animation-name: fadeInUp;
}

.animated.slideInUp {
  animation-name: slideInUp;
}

.animated.scaleIn {
  animation-name: scaleIn;
}

/* === PRINT STYLES === */
@media print {
  header,
  footer {
    display: none;
  }

  .hero {
    height: auto;
    min-height: auto;
  }

  .btn {
    display: none;
  }
}