/* ═══════════════════════════════════════════════════════════════
   ORSIF Administrative Toolkit — Main Stylesheet
   Forked from ORSIF FAQs Design System
   ═══════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ────────────────────────────────────────── */
:root {
  /* Brand Colors */
  --color-primary: #0d4d5f;
  --color-primary-dark: #093a49;
  --color-primary-light: #6b9dab;
  --color-secondary: #27ae60;
  --color-secondary-dark: #219a52;
  --color-accent: #6b9dab;
  --color-danger: #dc3545;
  --color-danger-light: #f8d7da;
  --color-warning: #f39c12;
  --color-warning-light: #fef3cd;

  /* Audience Colors */
  --color-audience-admin: #0d4d5f;
  --color-audience-clinician: #27ae60;
  --color-audience-nurse: #e74c3c;

  /* Neutrals */
  --color-text: #2c3e50;
  --color-text-light: #7f8c8d;
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-bg-dark: #ecf0f1;
  --color-border: #dce1e4;

  /* Typography */
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}
img { max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

/* ─── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.3; color: var(--color-primary); }
h1 { font-size: 2.5rem; margin-bottom: var(--spacing-md); }
h2 { font-size: 2rem; margin-bottom: var(--spacing-md); }
h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
h4 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }
p { margin-bottom: var(--spacing-md); }

/* ─── Container ────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-lg); }

/* ─── Navigation ───────────────────────────────────────────── */
.main-nav {
  position: sticky;
  top: 40px;
  z-index: 1000;
  background: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: var(--spacing-sm); text-decoration: none; }
.nav-logo img { height: 36px; width: auto; }
.nav-logo .logo-text { color: #fff; font-weight: 700; font-size: 1.1rem; letter-spacing: 1px; }
.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  padding: var(--spacing-sm) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}
.nav-links a:hover, .nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.15);
  text-decoration: none;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ─── Hero Section ─────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--spacing-xxl) 0;
  text-align: center;
}
.hero h1 { color: #fff; font-size: 2.75rem; margin-bottom: var(--spacing-sm); }
.hero .tagline {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
}
.hero-stat {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg) var(--spacing-md);
}
.hero-stat .stat-value {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}
.hero-stat .stat-label { font-size: 0.9rem; opacity: 0.9; }
.hero-stat .stat-source { font-size: 0.75rem; opacity: 0.6; margin-top: var(--spacing-xs); }

/* Audience Cards */
.audience-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
}
.audience-card {
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg) var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
}
.audience-card:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-2px);
}
.audience-card.selected {
  background: rgba(255,255,255,0.2);
  border-color: #fff;
  box-shadow: 0 0 20px rgba(255,255,255,0.15);
}
.audience-card .audience-icon { font-size: 2rem; margin-bottom: var(--spacing-sm); }
.audience-card .audience-label { font-weight: 700; font-size: 1rem; }
.audience-card .audience-desc { font-size: 0.8rem; opacity: 0.75; margin-top: var(--spacing-xs); }

/* ─── Sections ─────────────────────────────────────────────── */
.section {
  padding: var(--spacing-xxl) 0;
}
.section:nth-child(even) { background: var(--color-bg-alt); }
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}
.section-header p {
  color: var(--color-text-light);
  font-size: 1.1rem;
}
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-sm);
}

/* ─── Audience Callout Banners ─────────────────────────────── */
.audience-callout {
  display: none;
  border-left: 4px solid;
  border-radius: var(--radius-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  font-size: 0.95rem;
  line-height: 1.5;
}
.audience-callout .callout-label {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-xs);
}
body.audience-administrator .audience-callout[data-audience="administrator"],
body.audience-clinician .audience-callout[data-audience="clinician"],
body.audience-nurse-tech .audience-callout[data-audience="nurse-tech"] {
  display: block;
}
.audience-callout[data-audience="administrator"] {
  border-color: var(--color-audience-admin);
  background: rgba(13, 77, 95, 0.06);
}
.audience-callout[data-audience="administrator"] .callout-label { color: var(--color-audience-admin); }
.audience-callout[data-audience="clinician"] {
  border-color: var(--color-audience-clinician);
  background: rgba(39, 174, 96, 0.06);
}
.audience-callout[data-audience="clinician"] .callout-label { color: var(--color-audience-clinician); }
.audience-callout[data-audience="nurse-tech"] {
  border-color: var(--color-audience-nurse);
  background: rgba(231, 76, 60, 0.06);
}
.audience-callout[data-audience="nurse-tech"] .callout-label { color: var(--color-audience-nurse); }

/* ─── Stats Dashboard ──────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}
.stat-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.stat-card .stat-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}
.stat-card .stat-description { font-size: 0.95rem; margin-bottom: var(--spacing-sm); }
.stat-card .stat-comparison {
  font-size: 0.85rem;
  color: var(--color-danger);
  font-weight: 600;
}
.stat-card .stat-source {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-style: italic;
  margin-top: var(--spacing-sm);
}

/* Chart Container */
.chart-container {
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  height: 420px;
}
.chart-container canvas {
  display: block;
  width: 100% !important;
  max-width: 100%;
}

/* ─── Accordion ────────────────────────────────────────────── */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  background: var(--color-bg);
}
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  background: var(--color-bg);
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.accordion-header:hover { background: var(--color-bg-alt); }
.accordion-toggle {
  font-size: 1.25rem;
  color: var(--color-primary);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  margin-left: var(--spacing-md);
}
.accordion-item.active .accordion-toggle { transform: rotate(45deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}
.accordion-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}
.accordion-content p { color: var(--color-text-light); }
.accordion-content .regulation-ref {
  display: inline-block;
  background: var(--color-bg-alt);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: monospace;
  margin-bottom: var(--spacing-sm);
}
.accordion-content .key-point {
  background: var(--color-warning-light);
  border-left: 3px solid var(--color-warning);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-sm);
  font-size: 0.9rem;
}
.accordion-content .agency-link {
  display: inline-block;
  margin-top: var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ─── Role Cards ───────────────────────────────────────────── */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}
.role-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border-top: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.role-card .role-icon {
  width: 48px;
  height: 48px;
  background: rgba(13, 77, 95, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}
.role-card h3 { font-size: 1.25rem; }
.role-card .role-regulation {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-family: monospace;
  margin-bottom: var(--spacing-sm);
}
.role-card .role-summary { margin-bottom: var(--spacing-md); }
.role-card .role-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}
.role-card.expanded .role-details { max-height: 500px; }
.role-card .role-details ul {
  list-style: none;
  padding: 0;
}
.role-card .role-details li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  font-size: 0.9rem;
  color: var(--color-text-light);
}
.role-card .role-details li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}
.learn-more-btn {
  display: inline-block;
  background: none;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.learn-more-btn:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ─── Tabs ─────────────────────────────────────────────────── */
.tab-nav {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-xs);
}
.tab-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  background: none;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-light);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
  margin-bottom: -2px;
}
.tab-btn:hover { color: var(--color-primary); }
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* PPE Table */
.ppe-table {
  width: 100%;
  border-collapse: collapse;
}
.ppe-table th {
  background: var(--color-primary);
  color: #fff;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
}
.ppe-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.ppe-table tr:hover { background: var(--color-bg-alt); }
.ppe-table .note { color: var(--color-text-light); font-size: 0.85rem; }

/* Equipment Cards */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-md);
}
.equipment-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: transform var(--transition-fast);
}
.equipment-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.equipment-card h4 { font-size: 1rem; margin-bottom: var(--spacing-sm); }
.equipment-card p { font-size: 0.9rem; color: var(--color-text-light); margin: 0; }

/* ─── ALARA Section ────────────────────────────────────────── */
.alara-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.alara-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border-top: 4px solid var(--color-secondary);
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.alara-card .alara-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}
.alara-card h3 { color: var(--color-secondary); }
.alara-card .alara-tips {
  text-align: left;
  list-style: none;
  padding: 0;
  margin-top: var(--spacing-md);
}
.alara-card .alara-tips li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  font-size: 0.9rem;
  color: var(--color-text-light);
}
.alara-card .alara-tips li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: 700;
}

/* Inverse Square Law Slider */
.slider-demo {
  max-width: 500px;
  margin: var(--spacing-xl) auto 0;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.slider-demo label { font-weight: 600; display: block; margin-bottom: var(--spacing-sm); }
.slider-demo input[type="range"] { width: 100%; accent-color: var(--color-primary); }
.slider-demo .slider-output {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-top: var(--spacing-sm);
}
.slider-demo .slider-explanation {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: var(--spacing-sm);
}

/* ─── Dose Limits Table ────────────────────────────────────── */
.dose-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.dose-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg);
}
.dose-table thead th {
  background: var(--color-primary);
  color: #fff;
  padding: var(--spacing-md);
  text-align: left;
  font-size: 0.9rem;
}
.dose-table thead th small { font-weight: 400; opacity: 0.8; display: block; }
.dose-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.dose-table tr.highlight-row {
  background: var(--color-danger-light);
}
.dose-table tr.highlight-row td { font-weight: 600; }
.gap-badge {
  display: inline-block;
  background: var(--color-danger);
  color: #fff;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 700;
}
.gap-callout {
  background: var(--color-danger-light);
  border: 2px solid var(--color-danger);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  text-align: center;
}
.gap-callout .gap-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-danger);
}
.gap-callout p { margin: var(--spacing-sm) 0 0; }

/* ─── Worker Rights ────────────────────────────────────────── */
.rights-list { list-style: none; padding: 0; }
.rights-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  background: var(--color-bg);
}

/* ─── Reporting Steps ──────────────────────────────────────── */
.steps-list { list-style: none; padding: 0; counter-reset: steps; }
.step-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}
.step-item:last-child { border-bottom: none; }
.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
}
.step-content h4 { margin-bottom: var(--spacing-xs); }
.step-content p { color: var(--color-text-light); margin: 0; font-size: 0.95rem; }

/* ─── Resources Grid ───────────────────────────────────────── */
.resources-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}
.resource-group h3 {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
}
.resource-card {
  display: block;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.resource-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transform: translateX(4px);
}
.resource-card .resource-name {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
}
.resource-card .resource-desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin: var(--spacing-xs) 0 0;
}

/* ─── Checklist ────────────────────────────────────────────── */
.checklist-progress {
  margin-bottom: var(--spacing-lg);
  text-align: center;
}
.progress-bar {
  width: 100%;
  height: 12px;
  background: var(--color-bg-dark);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
  border-radius: 6px;
  transition: width var(--transition-normal);
  width: 0%;
}
.progress-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 600;
}
.checklist-group { margin-bottom: var(--spacing-lg); }
.checklist-group h3 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
}
.checklist-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--color-secondary);
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
}
.checklist-item label {
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1.5;
}
.checklist-item.checked label {
  color: var(--color-text-light);
  text-decoration: line-through;
}

/* ─── CTA Section ──────────────────────────────────────────── */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--spacing-xxl) 0;
  text-align: center;
}
.cta-section h2 { color: #fff; }
.cta-section p { color: rgba(255,255,255,0.9); max-width: 600px; margin: 0 auto var(--spacing-lg); }
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-secondary);
  color: #fff;
  border-color: var(--color-secondary);
}
.btn-primary:hover {
  background: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: #fff;
  text-decoration: none;
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
  text-decoration: none;
}

/* ─── Footer ───────────────────────────────────────────────── */
.main-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: var(--spacing-xl) 0;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.footer-section h4 { color: #fff; margin-bottom: var(--spacing-sm); }
.footer-section a { color: var(--color-primary-light); }
.footer-section ul { list-style: none; padding: 0; }
.footer-section li { padding: var(--spacing-xs) 0; font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 0.85rem;
}

/* ─── Utility ──────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-danger { color: var(--color-danger); }
.text-primary { color: var(--color-primary); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ─── Stat Counter Animation ───────────────────────────────── */
.stat-number { transition: all 0.5s ease-out; }
.stat-number.counting { opacity: 1; }

/* ─── Responsive: Tablet (768px) ───────────────────────────── */
@media (max-width: 1024px) {
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
  .alara-grid { grid-template-columns: 1fr; }
  .resources-columns { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-primary-dark);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }
  .nav-links.active { display: flex; }
  .nav-links a { padding: var(--spacing-md); }

  /* Hero */
  .hero { padding: var(--spacing-xl) 0; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .audience-selector { grid-template-columns: 1fr; }

  /* Sections */
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  .section { padding: var(--spacing-xl) 0; }

  /* Layout */
  .roles-grid { grid-template-columns: 1fr; }
  .alara-grid { grid-template-columns: 1fr; }
  .resources-columns { grid-template-columns: 1fr; }

  /* Chart */
  .chart-container { height: 380px; }

  /* Tabs */
  .tab-nav { flex-wrap: wrap; }
  .tab-btn { flex: 1; min-width: 100px; font-size: 0.85rem; padding: var(--spacing-sm); text-align: center; }
}

/* ─── Responsive: Small Mobile (480px) ─────────────────────── */
@media (max-width: 480px) {
  .container { padding: 0 var(--spacing-md); }
  .hero h1 { font-size: 1.75rem; }
  .hero .tagline { font-size: 1rem; }
  .hero-stat .stat-value { font-size: 2rem; }
  .stat-card .stat-number { font-size: 2.25rem; }
  .dose-table { font-size: 0.8rem; }
  .dose-table td, .dose-table th { padding: var(--spacing-sm); }
}