/* Northwood Clinic – Swiss Typography Design System */

/* ——————————————————————————————————————————————————
   CSS Variables (Northwood Meridian Palette)
—————————————————————————————————————————————————— */
:root {
  --nw-bg: #F6F4EF;
  --nw-surface: #FFFFFF;
  --nw-text: #111827;
  --nw-muted: #4B5563;
  --nw-border: #D6D3CC;
  --nw-primary: #1E3A5F;
  --nw-secondary: #2F6F7E;
  --nw-accent: #C46B2B;
  --nw-radius: 14px;
  --nw-shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
  --nw-max: 1120px;
}

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

html {
  font-size: 100%;
  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: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.7;
  color: var(--nw-text);
  background-color: var(--nw-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ——————————————————————————————————————————————————
   Swiss Typographic Scale (clamp for fluid sizing)
—————————————————————————————————————————————————— */
h1 {
  font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
  line-height: 1.1;
  font-weight: 700;
  color: var(--nw-primary);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 1.25rem + 1vw, 2rem);
  line-height: 1.2;
  font-weight: 600;
  color: var(--nw-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  line-height: 1.3;
  font-weight: 600;
  color: var(--nw-secondary);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

strong {
  font-weight: 600;
  color: var(--nw-primary);
}

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

a:focus-visible {
  outline: 2px solid var(--nw-accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(196, 107, 43, 0.2);
  border-radius: 2px;
}

/* ——————————————————————————————————————————————————
   Layout: Grid-Based Page Frame
—————————————————————————————————————————————————— */
.container {
  max-width: var(--nw-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

@media (min-width: 768px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* ——————————————————————————————————————————————————
   Header: Sticky-ish Layout (no JS)
—————————————————————————————————————————————————— */
.site-header {
  background-color: var(--nw-surface);
  border-bottom: 1px solid var(--nw-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--nw-shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-name {
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  font-weight: 700;
  color: var(--nw-primary);
  letter-spacing: -0.01em;
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.main-nav a {
  font-weight: 500;
  text-decoration: none;
  color: var(--nw-text);
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--nw-accent);
}

.main-nav a:focus-visible {
  outline: 2px solid var(--nw-accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(196, 107, 43, 0.2);
  border-radius: 2px;
}

/* ——————————————————————————————————————————————————
   Main Content
—————————————————————————————————————————————————— */
main {
  padding-top: 2.5rem;
  padding-bottom: 3rem;
}

@media (min-width: 768px) {
  main {
    padding-top: 3.5rem;
    padding-bottom: 4rem;
  }
}

article {
  background-color: var(--nw-surface);
  border-radius: var(--nw-radius);
  padding: 2rem 1.5rem;
  box-shadow: var(--nw-shadow);
}

@media (min-width: 768px) {
  article {
    padding: 3rem 2.5rem;
  }
}

section {
  margin-bottom: 2.5rem;
}

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

/* ——————————————————————————————————————————————————
   Breadcrumbs
—————————————————————————————————————————————————— */
#breadcrumbs {
  margin-bottom: 1.5rem;
}

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

.breadcrumb-list li {
  margin: 0;
}

.breadcrumb-list li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--nw-border);
}

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

.breadcrumb-list a:hover {
  text-decoration: underline;
  color: var(--nw-accent);
}

/* ——————————————————————————————————————————————————
   Blockquote
—————————————————————————————————————————————————— */
blockquote {
  background-color: var(--nw-bg);
  border-left: 4px solid var(--nw-accent);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 4px;
  font-style: italic;
  color: var(--nw-muted);
}

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

/* ——————————————————————————————————————————————————
   Aside (Checklist, Callouts)
—————————————————————————————————————————————————— */
aside {
  background-color: var(--nw-bg);
  border: 1px solid var(--nw-border);
  border-radius: var(--nw-radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

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

aside ul {
  margin-bottom: 0;
}

/* ——————————————————————————————————————————————————
   Tables: Zebra Striping, Hover, Caption
—————————————————————————————————————————————————— */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background-color: var(--nw-surface);
  border-radius: var(--nw-radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(17, 24, 39, 0.06);
}

caption {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--nw-primary);
  text-align: left;
  padding: 1rem;
  background-color: var(--nw-bg);
  border-bottom: 2px solid var(--nw-border);
}

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

thead th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

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

tbody tr:nth-child(even) {
  background-color: var(--nw-bg);
}

tbody tr:hover {
  background-color: rgba(47, 111, 126, 0.08);
}

tbody td {
  padding: 0.875rem 1rem;
  color: var(--nw-text);
}

@media (max-width: 767px) {
  table, thead, tbody, th, td, tr {
    display: block;
  }
  thead tr {
    position: absolute;
    top: -9999px;
    left: -9999px;
  }
  tr {
    margin-bottom: 1rem;
    border: 1px solid var(--nw-border);
    border-radius: var(--nw-radius);
  }
  td {
    border: none;
    position: relative;
    padding-left: 40%;
    text-align: left;
  }
  td::before {
    content: attr(data-label);
    position: absolute;
    left: 1rem;
    width: 35%;
    padding-right: 0.5rem;
    font-weight: 600;
    color: var(--nw-primary);
  }
}

/* ——————————————————————————————————————————————————
   Accordion: <details> / <summary>
—————————————————————————————————————————————————— */
details {
  background-color: var(--nw-surface);
  border: 1px solid var(--nw-border);
  border-radius: var(--nw-radius);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

details:hover {
  box-shadow: 0 4px 12px rgba(17, 24, 39, 0.1);
}

details[open] {
  box-shadow: 0 4px 12px rgba(17, 24, 39, 0.1);
}

summary {
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--nw-primary);
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  background-color: var(--nw-bg);
  transition: background-color 0.2s ease;
  user-select: none;
}

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

summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 0.5rem;
  transition: transform 0.2s ease;
}

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

summary:hover {
  background-color: rgba(47, 111, 126, 0.08);
}

summary:focus-visible {
  outline: 2px solid var(--nw-accent);
  outline-offset: -2px;
  box-shadow: inset 0 0 0 3px rgba(196, 107, 43, 0.2);
}

.details-content {
  padding: 1.25rem 1.25rem 1.5rem 1.25rem;
  color: var(--nw-text);
}

.details-content p:last-child {
  margin-bottom: 0;
}

@media (prefers-reduced-motion: reduce) {
  summary::before {
    transition: none;
  }
  details {
    transition: none;
  }
}

/* ——————————————————————————————————————————————————
   Footer
—————————————————————————————————————————————————— */
.site-footer {
  background-color: var(--nw-primary);
  color: var(--nw-surface);
  padding: 1.5rem 0;
  text-align: center;
  margin-top: 3rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.9rem;
}

/* ——————————————————————————————————————————————————
   Responsive Two-Column Layout (>=1024px)
—————————————————————————————————————————————————— */
@media (min-width: 1024px) {
  article {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2.5rem;
  }
  article > section:first-child {
    grid-column: 1 / -1;
  }
}

/* ——————————————————————————————————————————————————
   Utility: Button-Style Links
—————————————————————————————————————————————————— */
a.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--nw-secondary);
  color: var(--nw-surface);
  text-decoration: none;
  border-radius: var(--nw-radius);
  font-weight: 600;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

a.btn:hover {
  background-color: var(--nw-accent);
  box-shadow: 0 4px 12px rgba(196, 107, 43, 0.3);
}

a.btn:focus-visible {
  outline: 2px solid var(--nw-accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(196, 107, 43, 0.2);
}

/* ——————————————————————————————————————————————————
   Accessibility: Focus-Visible Ring
—————————————————————————————————————————————————— */
*:focus-visible {
  outline: 2px solid var(--nw-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(196, 107, 43, 0.2);
}

/* ——————————————————————————————————————————————————
   Print Styles
—————————————————————————————————————————————————— */
@media print {
  body {
    background-color: white;
    color: black;
  }
  .site-header,
  .site-footer,
  nav {
    display: none;
  }
  a {
    text-decoration: underline;
    color: black;
  }
  article {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}