/* CSS Variables - North Shore Slate Palette */
:root {
  --color-primary: #1F4B5A;
  --color-secondary: #2E6F6B;
  --color-accent: #C86B3C;
  --color-bg: #F6F7F8;
  --color-surface: #FFFFFF;
  --color-text: #0F1A1F;
  --color-muted: #4B5B63;
  --color-border: #D6DEE2;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 26, 31, 0.10);
  --space: clamp(12px, 1.6vw, 18px);
  --maxw: 1120px;
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --line-height-base: 1.7;
  --line-height-heading: 1.3;
}

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

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography - Swiss Style */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-primary);
  margin-bottom: 0.75em;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-top: 1.5em;
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  margin-top: 1.25em;
}

p {
  margin-bottom: 1em;
}

a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

ul, ol {
  margin-bottom: 1em;
  padding-left: 1.5em;
}

li {
  margin-bottom: 0.5em;
}

code {
  font-family: 'Courier New', Courier, monospace;
  background-color: var(--color-bg);
  padding: 0.125em 0.25em;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Layout - Mobile First */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--space);
}

header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: calc(var(--space) * 1.5) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

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

.site-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

nav[aria-label="Main navigation"] ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 1.5);
}

nav[aria-label="Main navigation"] a {
  text-decoration: none;
  font-weight: 600;
  color: var(--color-text);
  transition: color 0.2s ease;
}

nav[aria-label="Main navigation"] a:hover,
nav[aria-label="Main navigation"] a[aria-current="page"] {
  color: var(--color-accent);
}

main {
  padding: calc(var(--space) * 3) 0;
  min-height: 60vh;
}

footer {
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: calc(var(--space) * 2) 0;
  margin-top: calc(var(--space) * 4);
  text-align: center;
}

footer p {
  margin: 0;
}

/* Breadcrumb */
.breadcrumb {
  margin-bottom: calc(var(--space) * 2);
}

.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.breadcrumb li:not(:last-child)::after {
  content: '/';
  margin-left: 0.5em;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-secondary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* Article and Section */
article {
  background-color: var(--color-surface);
  padding: calc(var(--space) * 2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--space) * 2);
}

section {
  margin-bottom: calc(var(--space) * 3);
}

section:last-child {
  margin-bottom: 0;
}

/* Aside */
aside {
  background-color: var(--color-bg);
  border-left: 4px solid var(--color-accent);
  padding: var(--space);
  margin: calc(var(--space) * 2) 0;
  border-radius: var(--radius);
}

aside h3 {
  font-size: 1.125rem;
  margin-top: 0;
  color: var(--color-accent);
}

/* Blockquote */
blockquote {
  background-color: var(--color-bg);
  border-left: 6px solid var(--color-secondary);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
  border-radius: var(--radius);
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

blockquote strong {
  color: var(--color-primary);
  font-style: normal;
}

/* Tables - Swiss Grid Style */
table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--space) * 2) 0;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

caption {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-primary);
  text-align: left;
  padding: var(--space);
  background-color: var(--color-bg);
}

thead {
  background-color: var(--color-primary);
  color: var(--color-surface);
}

thead th {
  padding: calc(var(--space) * 1.25);
  text-align: left;
  font-weight: 600;
}

tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.2s ease;
}

tbody tr:hover {
  background-color: var(--color-bg);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody td {
  padding: var(--space);
  vertical-align: top;
}

/* Details/Summary Accordion */
details {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space);
  margin-bottom: var(--space);
  transition: border-color 0.2s ease;
}

details:hover {
  border-color: var(--color-secondary);
}

details[open] {
  border-color: var(--color-accent);
}

summary {
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5em;
  transition: color 0.2s ease;
  padding: calc(var(--space) * 0.5);
  margin: calc(var(--space) * -0.5);
  border-radius: calc(var(--radius) - 4px);
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: '▸';
  font-size: 1.25em;
  transition: transform 0.2s ease;
  display: inline-block;
}

details[open] summary::before {
  transform: rotate(90deg);
}

summary:hover {
  color: var(--color-accent);
}

summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

details p,
details ul {
  margin-top: var(--space);
}

details p:last-child,
details ul:last-child {
  margin-bottom: 0;
}

/* Responsive Grid - Swiss Typography */
@media (min-width: 768px) {
  header .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  article {
    padding: calc(var(--space) * 3);
  }

  /* Sticky table header */
  thead th {
    position: sticky;
    top: 0;
    z-index: 10;
    background-color: var(--color-primary);
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 1.0625rem;
  }

  .container {
    padding: 0 calc(var(--space) * 2);
  }
}

/* Focus Visible - High Contrast Accessibility */
*:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  summary::before {
    transition: none;
  }
}

/* Print Styles */
@media print {
  body {
    background-color: white;
    color: black;
  }

  header,
  footer,
  nav {
    display: none;
  }

  a {
    text-decoration: underline;
    color: black;
  }

  a[href^="http"]::after {
    content: ' (' attr(href) ')';
    font-size: 0.875em;
  }

  article,
  table,
  blockquote,
  aside {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  details {
    border: 1px solid #ccc;
  }

  details summary::before {
    content: '';
  }

  details[open] summary ~ * {
    display: block;
  }

  h1, h2, h3 {
    page-break-after: avoid;
  }

  table, figure {
    page-break-inside: avoid;
  }
}

/* Utility Classes */
.faq-intro,
.faq-questions,
.faq-table,
.faq-closing {
  margin-bottom: calc(var(--space) * 2.5);
}

.quick-contacts {
  font-size: 0.95rem;
}