/* Norlys Kystlinjen Annual Report 2026 */
/* Nordic editorial design: cool neutrals, warm accent, restraint */

/* === Type System === */
:root {
  /* Font stacks - system fonts only */
  --font-serif: ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, 'Courier New', monospace;
  --font-display: "Helvetica Neue", Helvetica, Arial, sans-serif;
  
  /* Type scale - modular scale 1.25 */
  --type-xs: 0.8rem;
  --type-sm: 1rem;
  --type-md: 1.25rem;
  --type-lg: 1.563rem;
  --type-xl: 1.953rem;
  --type-2xl: 2.441rem;
  --type-3xl: 3.052rem;
  
  /* Colors - Nordic palette */
  --color-primary: #27ae60;      /* Warm accent (green) */
  --color-primary-dark: #1e8449;
  --color-bg: #f8f9fa;          /* Paper-like background */
  --color-bg-alt: #ffffff;      /* White for cards */
  --color-text: #2c3e50;        /* Dark slate for readability */
  --color-text-lite: #34495e;
  --color-text-muted: #7f8c8d;
  
  /* Accent colors */
  --color-primary-accent: #3498db;  /* Blue */
  --color-success: #3498db;
  --color-warning: #f39c12;         /* Amber */
  --color-error: #c0392b;           /* Red */
  
  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Grid */
  --grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  --grid-gap: var(--space-lg);
  
  /* Line height and measures */
  --line-height: 1.6;
  --max-width: 70ch;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* === Base Styles === */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-padding-top: 80px; /* Account for sticky header */
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--type-sm);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  font-feature-settings: 'kern', 'liga';
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background-color: var(--color-primary);
  color: white;
  padding: 8px 12px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* === Header & Navigation === */
.site-header {
  position: sticky;
  top: 0;
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-sm) var(--space-md);
  z-index: 99;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  transition: background-color 0.2s ease;
  position: relative;
}

.nav-link:hover,
.nav-link:focus {
  background-color: var(--color-gray-100);
}

.nav-link[aria-current="page"],
.nav-link.active {
  background-color: var(--color-primary);
  color: white;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-link.active::after,
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

/* Reading progress */
.reading-progress {
  width: 100%;
  height: 4px;
  background-color: var(--color-gray-300);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--space-sm);
}

.progress-bar {
  height: 100%;
  width: 0%;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

/* === Main Content === */
.main-content {
  max-width: min(70ch, 100%);
  margin: 0 auto;
  padding: var(--space-lg);
}

.section {
  margin-bottom: var(--space-3xl);
  scroll-margin-top: 80px;
  position: relative;
}

.section-header {
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: var(--type-3xl);
  font-weight: 700;
  margin: 0 0 var(--space-md) 0;
  color: var(--color-text);
  line-height: 1.2;
}

/* === Opening Section === */
.section-opening {
  text-align: center;
}

.opening-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-2xl) 0;
}

.opening-quote {
  font-size: var(--type-lg);
  font-style: italic;
  max-width: 55ch;
  margin: 0 auto;
  line-height: 1.7;
  color: var(--color-text-lite);
}

.hero-button-container {
  margin-top: var(--space-lg);
}

.hero-button {
  display: inline-block;
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-size: var(--type-md);
  font-weight: 600;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.hero-button:hover,
.hero-button:focus {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* === Key Figures Grid === */
.key-figures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.key-figure {
  background-color: var(--color-bg-alt);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
  text-align: center;
}

.key-figure-primary {
  background: linear-gradient(135deg, var(--color-gray-100), var(--color-bg-alt));
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.1);
}

.key-figure-value {
  font-size: var(--type-3xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.key-figure-label {
  font-size: var(--type-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.key-figure-comparison {
  font-size: var(--type-xs);
  color: var(--color-gray-600);
}

.comparison-change {
  font-weight: 600;
}

.comparison-change.positive {
  color: var(--color-success);
}

/* === Route Map Section === */
.map-container {
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

.coastline-map {
  width: 100%;
  max-width: 600px;
  height: auto;
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  background-color: white;
}

.route-marker {
  cursor: pointer;
  transition: transform 0.2s ease, r 0.2s ease;
  fill: var(--color-primary);
  stroke: white;
  stroke-width: 2;
}

.route-marker:hover,
.route-marker:focus {
  transform: scale(1.2);
  r: 10;
}

.route-arc {
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.route-marker:hover ~ .route-arc[data-route],
.route-marker:focus ~ .route-arc[data-route] {
  opacity: 1;
}

/* Route table */
.route-table-container {
  margin-top: var(--space-lg);
}

.route-table,
.fleet-table,
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-md);
}

.route-table th,
.route-table td,
.fleet-table th,
.fleet-table td,
.data-table th,
.data-table td {
  padding: var(--space-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.route-table th,
.fleet-table th,
.data-table th {
  background-color: var(--color-gray-100);
  font-weight: 600;
}

/* Highlight for cross-referencing */
.route-table tbody tr.highlighted,
.fleet-table tbody tr.highlighted,
.route-marker.highlighted {
  background-color: var(--color-primary);
  color: white;
}

.route-table tbody tr.highlighted td,
.fleet-table tbody tr.highlighted td,
.route-marker.highlighted {
  stroke: white;
  fill: var(--color-primary-dark);
}

/* === Fleet Section === */
.fleet-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  background-color: var(--color-bg-alt);
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
}

.fleet-filter label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.fleet-filter select {
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-gray-300);
  border-radius: 4px;
  font-family: var(--font-mono);
}

.fleet-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.ship-profiles {
  margin-top: var(--space-lg);
}

.ship-profile {
  width: 100%;
  max-width: 320px;
  margin: 0 auto var(--space-lg) auto;
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  padding: var(--space-md);
  background-color: var(--color-bg-alt);
}

/* Scale bar styling */
.ship-profile line {
  stroke: var(--color-text);
  stroke-width: 2;
}

.ship-profile text.scale-label {
  fill: var(--color-text-muted);
  font-size: 10px;
}

/* === Financials Section === */
.financial-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-xl);
}

.chart-container {
  background-color: var(--color-bg-alt);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
}

.chart-container h3 {
  margin-top: 0;
  font-size: var(--type-lg);
  color: var(--color-text);
}

.bar-chart,
.waterfall-chart,
.emissions-pie {
  width: 100%;
  height: auto;
  overflow: visible;
}

/* === Sustainability Section === */
.sustainability-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.emissions-chart {
  flex-shrink: 0;
}

.methodology {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background-color: var(--color-bg-alt);
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
}

.methodology h3 {
  margin-top: 0;
  font-size: var(--type-lg);
}

.methodology-note {
  margin: var(--space-xs) 0;
  font-size: var(--type-sm);
}

.methodology-note sup {
  font-weight: bold;
  color: var(--color-primary);
}

.methodology-note small {
  font-size: 0.85em;
  color: var(--color-gray-600);
}

/* === CEO Letter Section === */
.ceo-letter {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg);
  background-color: var(--color-bg-alt);
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
  font-size: var(--type-lg);
  line-height: 1.7;
}

.ceo-letter h3 {
  font-size: var(--type-2xl);
  margin-top: 0;
  color: var(--color-text);
}

.ceo-letter p {
  margin: var(--space-md) 0;
}

.ceo-letter a {
  color: var(--color-primary);
  text-decoration: underline;
}

.signature {
  margin-top: var(--space-2xl);
  text-align: right;
}

.signature-name {
  display: block;
  font-weight: 600;
  font-size: var(--type-lg);
}

.signature-title {
  display: block;
  font-size: var(--type-sm);
  color: var(--color-text-muted);
}

.footnotes {
  margin-top: var(--space-lg);
  font-size: var(--type-xs);
  color: var(--color-gray-600);
  font-family: var(--font-mono);
}

/* === Governance Section === */
.governance-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.directory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.directory-item {
  background-color: var(--color-bg-alt);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
}

.directory-item h4 {
  margin-top: 0;
  margin-bottom: var(--space-md);
  font-size: var(--type-md);
  color: var(--color-text);
}

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

.directory-list li {
  margin-bottom: var(--space-sm);
}

.directory-list strong {
  color: var(--color-text);
}

/* === Back to Top === */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
}

.top-link {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-size: var(--type-sm);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.top-link.visible {
  opacity: 1;
  visibility: visible;
}

.top-link:hover,
.top-link:focus {
  background-color: var(--color-primary-dark);
}

/* === Responsive Adjustments === */
@media (max-width: 1200px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 2rem;
    --space-2xl: 2.5rem;
  }
  
  .main-content {
    padding: var(--space-lg);
  }
}

@media (max-width: 900px) {
  .nav {
    justify-content: center;
  }
  
  .nav-link {
    font-size: var(--type-sm);
    padding: var(--space-xs) var(--space-sm);
  }
  
  .key-figures-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section-title {
    font-size: var(--type-2xl);
  }
}

@media (max-width: 576px) {
  .section {
    padding: var(--space-md) var(--space-sm);
  }
  
  .main-content {
    padding: var(--space-md) var(--space-sm);
  }
  
  .key-figures-grid {
    grid-template-columns: 1fr;
  }
  
  .financial-container {
    grid-template-columns: 1fr;
  }
  
  .sustainability-container {
    grid-template-columns: 1fr;
  }
  
  .directory-grid {
    grid-template-columns: 1fr;
  }
  
  .back-to-top {
    bottom: var(--space-md);
    right: var(--space-md);
  }
}

/* === Print Styles === */
@media print {
  body {
    background-color: white;
    color: black;
  }
  
  .site-header,
  .back-to-top,
  .skip-link {
    display: none;
  }
  
  .main-content {
    padding: 0;
    max-width: none;
  }
  
  .section {
    margin-bottom: var(--space-2xl);
    page-break-inside: avoid;
  }
  
  .section-header {
    margin-bottom: var(--space-lg);
  }
  
  .section-title {
    font-size: 24pt;
    color: black;
  }
  
  .key-figures-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10pt;
  }
  
  .key-figure {
    page-break-inside: avoid;
    border: 1px solid #ccc;
  }
  
  .route-table,
  .fleet-table,
  .data-table {
    page-break-inside: avoid;
  }
  
  .chart-container {
    page-break-inside: avoid;
  }
  
  .coastline-map {
    max-width: 100%;
    height: auto;
  }
  
  .ceo-letter {
    font-size: 12pt;
    page-break-inside: avoid;
  }
  
  .methodology {
    page-break-inside: avoid;
  }
}