/* Tight Clinic – Swiss Typography Design System */

:root {
  --color-primary: #1E3A8A;
  --color-secondary: #0F766E;
  --color-accent: #D97706;
  --color-bg: #F7F7F5;
  --color-surface: #FFFFFF;
  --color-text: #111827;
  --color-muted: #4B5563;
  --color-border: #D1D5DB;
  --radius: 14px;
  --space: 1rem;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.10);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --line-height-base: 1.7;
  --line-height-heading: 1.2;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-sans);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  padding: 0;
}

/* Typography – Swiss Style: Left-aligned, generous whitespace */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-primary);
  margin-bottom: calc(var(--space) * 0.75);
  text-align: left;
}

h1 {
  font-size: 2.25rem;
  margin-top: calc(var(--space) * 2);
  margin-bottom: var(--space);
}

h2 {
  font-size: 1.75rem;
  margin-top: calc(var(--space) * 1.5);
  border-left: 4px solid var(--color-accent);
  padding-left: calc(var(--space) * 0.75);
}

h3 {
  font-size: 1.375rem;
  margin-top: var(--space);
  color: var(--color-secondary);
}

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

a {
  color: var(--color-secondary);
  text-decoration: underline;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

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

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

ul, ol {
  margin-left: calc(var(--space) * 1.5);
  margin-bottom: var(--space);
}

li {
  margin-bottom: calc(var(--space) * 0.5);
}

/* Header and Navigation */
header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: calc(var(--space) * 1.5) var(--space);
  box-shadow: var(--shadow);
}

.site-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: calc(var(--space) * 0.75);
  text-align: left;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space);
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  padding: calc(var(--space) * 0.5);
  border-radius: calc(var(--radius) / 2);
  transition: background-color 0.2s ease, color 0.2s ease;
}

nav a:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

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

/* Breadcrumbs */
.breadcrumbs {
  padding: var(--space);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

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

/* Main Layout – CSS Grid for page shell */
main {
  padding: calc(var(--space) * 2) var(--space);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

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) * 2);
}

aside {
  background-color: var(--color-bg);
  padding: calc(var(--space) * 1.5);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius);
  margin-top: calc(var(--space) * 2);
}

/* Blockquote – Swiss style with accent border */
blockquote {
  background: linear-gradient(to right, var(--color-bg) 0%, var(--color-surface) 100%);
  border-left: 6px solid var(--color-accent);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 1.5) 0;
  font-style: italic;
  color: var(--color-muted);
  border-radius: calc(var(--radius) / 2);
}

blockquote p {
  margin-bottom: 0;
}

/* Table – Semantic, responsive, zebra striping */
.table-wrapper {
  overflow-x: auto;
  margin: calc(var(--space) * 1.5) 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-surface);
  font-size: 0.9375rem;
}

caption {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-primary);
  text-align: left;
  padding: var(--space);
  background-color: var(--color-bg);
  border-bottom: 2px solid var(--color-border);
}

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

thead th {
  padding: calc(var(--space) * 0.75);
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--color-accent);
}

tbody tr {
  border-bottom: 1px solid var(--color-border);
}

tbody tr:nth-child(even) {
  background: linear-gradient(to right, var(--color-bg) 0%, var(--color-surface) 100%);
}

tbody td {
  padding: calc(var(--space) * 0.75);
  vertical-align: top;
}

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

/* Accordion – details/summary with custom marker and transitions */
details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space);
  margin-bottom: var(--space);
  box-shadow: 0 2px 8px rgba(17, 24, 39, 0.05);
  transition: box-shadow 0.2s ease;
}

details:hover {
  box-shadow: var(--shadow);
}

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

summary {
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  padding: calc(var(--space) * 0.5);
  border-radius: calc(var(--radius) / 2);
  transition: background-color 0.2s ease, color 0.2s ease;
  position: relative;
  padding-left: calc(var(--space) * 1.75);
}

summary::before {
  content: '▸';
  position: absolute;
  left: calc(var(--space) * 0.5);
  color: var(--color-accent);
  font-size: 1.125rem;
  transition: transform 0.2s ease;
}

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

summary:hover {
  background-color: var(--color-bg);
  color: var(--color-secondary);
}

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

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

details p {
  margin-top: var(--space);
  padding-left: calc(var(--space) * 1.75);
  color: var(--color-text);
}

/* Footer */
footer {
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-border);
  padding: calc(var(--space) * 1.5) var(--space);
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* Responsive – Mobile-first, breakpoints at 768px and 1024px */
@media (min-width: 768px) {
  body {
    grid-template-columns: 1fr;
  }

  main {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 2);
  }

  h1 {
    font-size: 2.75rem;
  }

  h2 {
    font-size: 2rem;
  }

  nav {
    gap: calc(var(--space) * 1.5);
  }

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

@media (min-width: 1024px) {
  main {
    grid-template-columns: 2fr 1fr;
    max-width: 1400px;
  }

  aside {
    position: sticky;
    top: calc(var(--space) * 2);
    align-self: start;
    margin-top: 0;
  }

  h1 {
    font-size: 3rem;
  }

  .site-name {
    font-size: 1.75rem;
  }
}

/* Utility: Focus-visible for accessibility */
*:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* Utility: Smooth transitions (disabled in prefers-reduced-motion) */
a, summary, nav a, details {
  transition: all 0.2s ease;
}