/* ─────────────────────────────────────────────────────────────────── */
/* Tillerstead — Professional Contractor Site                           */
/* Base CSS Layer — Semantic HTML Defaults + Foundational Styles        */
/* ─────────────────────────────────────────────────────────────────── */

/* ─── CSS Reset ─────────────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family:
    'Geist',
    'Segoe UI',
    system-ui,
    -apple-system,
    sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-surface-secondary);
}

/* ─── Typography ────────────────────────────────────────────────── */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
}

h2 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5,
h6 {
  font-size: 1rem;
}

p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ─── Lists ────────────────────────────────────────────────────── */

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ─── Forms ────────────────────────────────────────────────────── */

input,
textarea,
select,
button {
  font-family: inherit;
  font-size: inherit;
}

input[type='text'],
input[type='email'],
input[type='number'],
textarea,
select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border-secondary);
  border-radius: 0.5rem;
  font-size: 1rem;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

/* ─── Media ────────────────────────────────────────────────────── */

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

/* ─── Layout Utilities ─────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: 64rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

/* ─── Accessibility ────────────────────────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.sr-only:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* ─── Focus State ────────────────────────────────────────────────── */

:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}

/* ─── Motion Safety ────────────────────────────────────────────────── */

@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;
  }
}

/* ─── Print Styles ─────────────────────────────────────────────── */

@media print {
  body {
    background: white;
  }

  a {
    text-decoration: underline;
  }

  a::after {
    content: ' (' attr(href) ')';
    font-size: 0.75rem;
  }
}

/* ─── Component Classes ─────────────────────────────────────────── */

/* Footer links — token-driven, dark-mode ready */
.footer-link {
  color: var(--color-text-inverse-tertiary);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-text-inverse-primary);
}

/* Hero secondary CTA — hover via CSS, no inline JS */
.hero-secondary-cta:hover,
.hero-secondary-cta:focus-visible {
  border-color: var(--color-brand-primary) !important;
  color: var(--color-text-inverse-primary) !important;
}

/* Tool cards — hover elevation + brand border */
.tool-card:hover,
.tool-card:focus-visible {
  border-color: var(--color-brand-primary) !important;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Service page links — hover underline */
.service-link:hover,
.service-link:focus-visible {
  text-decoration: underline;
}

/* Guide cards — hover elevation + brand border */
.guide-card:hover,
.guide-card:focus-visible {
  border-color: var(--color-brand-primary) !important;
  box-shadow: var(--shadow-md);
}

/* Form inputs — token-driven borders and focus ring */
.form-input {
  border-color: var(--color-border-primary);
  color: var(--color-text-primary);
  background-color: var(--color-surface-primary);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 2px var(--color-brand-primary-glow);
}

@media (prefers-reduced-motion: reduce) {
  .tool-card:hover,
  .tool-card:focus-visible {
    transform: none;
  }
}

/* ─── Footer Links (dark background) ────────────────────────────── */

.footer-link {
  color: var(--color-text-inverse-tertiary);
  transition: color var(--transition-fast);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-text-inverse-primary);
}

/* ─── Documentation Layout with Sidebar ─────────────────────────── */

.docs-layout {
  min-height: 100vh;
}

.docs-container {
  display: flex;
  min-height: calc(100vh - 64px); /* Account for header height */
}

/* Sidebar: Full-height, anchored, stable */
.docs-sidebar {
  position: sticky;
  top: 64px; /* Below header */
  left: 0;
  width: 300px;
  height: calc(100vh - 64px);
  overflow-y: auto;
  flex-shrink: 0;
  border-right: 1px solid var(--color-border-primary);
  background-color: var(--color-surface-primary);
  z-index: 10;
}

.docs-sidebar__inner {
  padding: var(--space-lg);
  padding-bottom: var(--space-2xl);
}

/* Navigation sections */
.docs-nav-section {
  margin-bottom: var(--space-xl);
}

.docs-nav-section__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  color: var(--color-text-tertiary);
}

.docs-nav-section__icon {
  width: 1rem;
  height: 1rem;
}

/* Navigation list */
.docs-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.docs-nav-item {
  margin: 0;
}

/* Navigation links */
.docs-nav-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.docs-nav-link:hover,
.docs-nav-link:focus-visible {
  color: var(--color-text-primary);
  background-color: var(--color-surface-secondary);
  border-color: var(--color-border-primary);
  outline: none;
}

.docs-nav-link--active {
  color: var(--color-brand-primary);
  background-color: var(--color-brand-primary-tint);
  border-color: var(--color-brand-primary-border);
  font-weight: 600;
}

/* Main content area */
.docs-content {
  flex: 1;
  min-width: 0; /* Allow content to shrink properly */
  padding: var(--space-xl) var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.docs-content__inner {
  max-width: 960px;
}

/* Mobile: Hide sidebar, show content full-width */
@media (max-width: 768px) {
  .docs-container {
    flex-direction: column;
  }

  .docs-sidebar {
    position: static;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border-primary);
  }

  .docs-content {
    padding: var(--space-lg) var(--space-md);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .docs-nav-link:hover,
  .docs-nav-link:focus-visible {
    transition: none;
  }
}