/* ==========================================================================
   Silid Help Center - Master Stylesheet
   Single CSS file for all help center pages.
   Brand tokens derived from the Silid design system.
   ========================================================================== */

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

:root {
  /* Brand colors */
  --color-primary: #005461;
  --color-primary-hover: #003844;
  --color-primary-light: #e0f2f1;

  /* Neutrals */
  --color-bg: #fffefa;
  --color-surface: #f8f9fa;
  --color-text: #1f2937;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --color-white: #ffffff;

  /* Status */
  --color-info: #448aff;
  --color-success: #10b981;
  --color-warning: #ed8634;
  --color-danger: #ef4444;

  /* Accent */
  --color-accent-bronze: #ad7a51;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'DM Sans', var(--font-sans);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 40px;
  --space-3xl: 48px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);

  /* Layout */
  --sidebar-width: 280px;
  --header-height: 64px;
  --content-max-width: 780px;
}

/* ---------- Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@500;700&family=Inter:wght@400;500;600&display=swap');

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Links ---------- */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* ---------- Header ---------- */
.kb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  box-shadow: var(--shadow-md);
}

.kb-header__logo {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.kb-header__logo:hover {
  color: var(--color-white);
  text-decoration: none;
}

.kb-header__title {
  font-weight: 500;
  font-size: 14px;
  opacity: 0.85;
  margin-left: var(--space-sm);
  padding-left: var(--space-md);
  border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.kb-header__search {
  margin-left: auto;
  position: relative;
  width: 260px;
}

.kb-header__search input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  font-size: 14px;
  outline: none;
  transition: background 0.2s;
}

.kb-header__search input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.kb-header__search input:focus {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
}

.kb-header__search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.6;
}

/* ---------- Layout Shell ---------- */
.kb-layout {
  display: flex;
  flex: 1;
  min-height: calc(100vh - var(--header-height));
}

/* ---------- Sidebar ---------- */
.kb-sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  overflow-y: auto;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
}

.kb-sidebar__section {
  margin-bottom: var(--space-sm);
}

.kb-sidebar__heading {
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-lg);
}

.kb-sidebar__link {
  display: block;
  padding: 6px var(--space-lg) 6px 28px;
  font-size: 14px;
  color: var(--color-text);
  border-left: 3px solid transparent;
  transition: all 0.15s;
}

.kb-sidebar__link:hover {
  background: var(--color-border);
  text-decoration: none;
  color: var(--color-primary);
}

.kb-sidebar__link--active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 500;
}

/* ---------- Main Content ---------- */
.kb-main {
  flex: 1;
  padding: var(--space-2xl) var(--space-3xl);
  max-width: calc(var(--content-max-width) + var(--space-3xl) * 2);
}

/* ---------- Breadcrumbs ---------- */
.kb-breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.kb-breadcrumbs a {
  color: var(--color-text-secondary);
}

.kb-breadcrumbs a:hover {
  color: var(--color-primary);
}

.kb-breadcrumbs__sep::after {
  content: '›';
  margin: 0 2px;
}

/* ---------- Article Content ---------- */
.kb-article h1 {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.kb-article h2 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.kb-article h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.kb-article p {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.kb-article ul,
.kb-article ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.kb-article li {
  margin-bottom: var(--space-xs);
}

.kb-article .kb-note {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  font-size: 14px;
}

.kb-article .kb-warning {
  background: #fef3c7;
  border-left: 4px solid var(--color-warning);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  font-size: 14px;
}

/* Numbered step lists - applies to any <ol> inside article content */
.kb-article ol {
  counter-reset: step-counter;
  list-style: none;
  padding-left: 0;
}

.kb-article ol li {
  counter-increment: step-counter;
  padding-left: 36px;
  position: relative;
  margin-bottom: var(--space-md);
}

.kb-article ol li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 1px;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Home Page ---------- */
.kb-hero {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
}

.kb-hero h1 {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.kb-hero p {
  font-size: 16px;
  opacity: 0.9;
  max-width: 500px;
  margin: 0 auto;
}

.kb-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.kb-category-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.kb-category-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.kb-category-card h2 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.kb-category-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.kb-category-card__links {
  list-style: none;
  padding: 0;
}

.kb-category-card__links li {
  margin-bottom: 4px;
}

.kb-category-card__links a {
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-category-card__links a::before {
  content: '→';
  font-size: 12px;
  opacity: 0.5;
}

/* ---------- Footer ---------- */
.kb-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  text-align: center;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: auto;
}

.kb-footer a {
  color: var(--color-primary);
}

/* ---------- Mobile Sidebar Toggle ---------- */
.kb-sidebar-toggle {
  display: none;
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 40;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  align-items: center;
  justify-content: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .kb-header__search {
    display: none;
  }

  .kb-header__title {
    display: none;
  }

  .kb-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    z-index: 30;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }

  .kb-sidebar--open {
    transform: translateX(0);
  }

  .kb-sidebar-toggle {
    display: flex;
  }

  .kb-main {
    padding: var(--space-lg) var(--space-md);
  }

  .kb-hero h1 {
    font-size: 24px;
  }

  .kb-categories {
    grid-template-columns: 1fr;
  }

  .kb-article h1 {
    font-size: 24px;
  }
}

/* ---------- Home page (full width, no sidebar) ---------- */
.kb-layout--home .kb-sidebar {
  display: none;
}

.kb-layout--home .kb-main {
  max-width: 1000px;
  margin: 0 auto;
}

/* ---------- Role Picker (Home) ---------- */
.kb-role-picker {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.kb-role-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.15s;
  text-decoration: none;
  color: var(--color-text);
}

.kb-role-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--color-text);
}

.kb-role-card__icon {
  font-size: 32px;
  margin-bottom: var(--space-sm);
}

.kb-role-card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: var(--space-xs);
}

.kb-role-card__desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* ---------- Callout Boxes ---------- */
.kb-article .kb-callout {
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  font-size: 14px;
  line-height: 1.6;
}

.kb-article .kb-callout strong:first-child {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kb-article .kb-callout--tip {
  background: #ecfdf5;
  border-left: 4px solid var(--color-success);
}

.kb-article .kb-callout--info {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
}

.kb-article .kb-callout--important {
  background: #fef3c7;
  border-left: 4px solid var(--color-warning);
}

.kb-article .kb-callout--warning {
  background: #fef2f2;
  border-left: 4px solid var(--color-danger);
}

/* ---------- Comparison Tables ---------- */
.kb-article table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-lg);
  font-size: 14px;
}

.kb-article table th {
  background: var(--color-surface);
  font-family: var(--font-heading);
  font-weight: 700;
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 2px solid var(--color-border);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary);
}

.kb-article table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.kb-article table tr:last-child td {
  border-bottom: none;
}

.kb-article table tr:hover td {
  background: var(--color-surface);
}

/* ---------- Related Articles ---------- */
.kb-related {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.kb-related h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kb-related ul {
  list-style: none;
  padding: 0;
}

.kb-related li {
  margin-bottom: var(--space-sm);
}

.kb-related a {
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.kb-related a::before {
  content: '→';
  font-size: 12px;
  opacity: 0.5;
}

/* ---------- Support Banner ---------- */
.kb-support-banner {
  margin-top: var(--space-xl);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text-secondary);
  text-align: center;
}

.kb-support-banner a {
  color: var(--color-primary);
  font-weight: 500;
}

/* ---------- Glossary ---------- */
.kb-glossary-list {
  list-style: none;
  padding: 0;
}

.kb-glossary-list dt {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.kb-glossary-list dt:first-child {
  margin-top: 0;
}

.kb-glossary-list dd {
  margin: 0 0 var(--space-sm) 0;
  padding-left: 0;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
}

/* ---------- Section anchor (Home) ---------- */
.kb-section-label {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

/* ---------- Search Dropdown ---------- */
.kb-search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  max-height: 320px;
  overflow-y: auto;
  z-index: 60;
  margin-top: 4px;
  display: none;
}

.kb-search-results--open {
  display: block;
}

.kb-search-results__item {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: 14px;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.kb-search-results__item:last-child {
  border-bottom: none;
}

.kb-search-results__item:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  text-decoration: none;
}

.kb-search-results__item small {
  display: block;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.kb-search-results__empty {
  padding: var(--space-md);
  text-align: center;
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ---------- Responsive additions ---------- */
@media (max-width: 768px) {
  .kb-role-picker {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .kb-role-picker {
    grid-template-columns: 1fr;
  }
}