/* ============================================
   SOP Hub - Modern Frontend Website UI
   Style: SaaS / Documentation Portal
   ============================================ */

/* CSS Variables */
:root {
  /* Brand Colors */
  --color-primary: #09668E;
  --color-primary-dark: #065272;
  --color-primary-light: #0a7ba8;
  --color-primary-subtle: rgba(9, 102, 142, 0.08);
  
  /* Backgrounds */
  --color-bg-white: #FFFFFF;
  --color-bg-light: #F7FAFC;
  --color-bg-hero: linear-gradient(135deg, #09668E 0%, #0a7ba8 50%, #065272 100%);
  
  /* Text Colors */
  --color-text-primary: #0F172A;
  --color-text-secondary: #334155;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  
  /* Borders */
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  
  /* Accent Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;
  
  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 56px;
  --space-12: 72px;
  --space-16: 96px;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Layout */
  --header-height: 72px;
  --container-max: 1200px;
  --content-max: 720px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-white);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

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

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ============================================
   Header / Navigation
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  max-width: 150px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 4px rgba(9, 102, 142, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(9, 102, 142, 0.4);
}

.btn-secondary {
  background: var(--color-bg-light);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
  border-color: var(--color-border);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-7);
  font-size: var(--font-size-base);
  border-radius: var(--radius-xl);
}

.btn-white {
  background: white;
  color: var(--color-primary);
}

.btn-white:hover {
  background: var(--color-bg-light);
  color: var(--color-primary-dark);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  padding: var(--space-2);
  color: var(--color-text-secondary);
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-3);
  border-radius: var(--radius-md);
}

.mobile-nav-link:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  padding-top: calc(var(--header-height) + var(--space-12));
  padding-bottom: var(--space-16);
  background: var(--color-bg-hero);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Hero Search */
.hero-search {
  max-width: 640px;
  margin: 0 auto var(--space-6);
}

.search-box {
  position: relative;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
}

.search-input-wrapper {
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: var(--space-5);
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-icon svg {
  width: 22px;
  height: 22px;
}

.search-input {
  width: 100%;
  height: 60px;
  padding: 0 var(--space-12);
  padding-right: 140px;
  border: none;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  background: transparent;
}

.search-input:focus {
  outline: none;
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-filter-btn {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.search-filter-btn:hover {
  background: var(--color-border);
}

.search-filter-btn svg {
  width: 16px;
  height: 16px;
}

/* Search Suggestions */
.search-suggestions {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: none;
  z-index: 100;
  overflow: hidden;
}

.search-suggestions.active {
  display: block;
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  transition: background var(--transition-fast);
  color: var(--color-text-primary);
}

.suggestion-item:hover {
  background: var(--color-bg-light);
}

.suggestion-icon {
  width: 40px;
  height: 40px;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.suggestion-icon svg {
  width: 20px;
  height: 20px;
}

.suggestion-content {
  flex: 1;
  min-width: 0;
  text-align: left;
}

.suggestion-title {
  font-weight: 500;
  color: var(--color-text-primary);
}

.suggestion-path {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.suggestion-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  font-weight: 500;
}

/* Popular Searches */
.popular-searches {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.popular-label {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.popular-chip {
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.popular-chip:hover {
  background: rgba(255, 255, 255, 0.25);
}

.hero-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}

.hero-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: white;
  font-size: var(--font-size-sm);
  opacity: 0.9;
  transition: opacity var(--transition-fast);
}

.hero-link:hover {
  opacity: 1;
  color: white;
}

.hero-link svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   Section Styles
   ============================================ */

.section {
  padding: var(--space-16) 0;
}

.section-light {
  background: var(--color-bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-label {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Category Cards
   ============================================ */

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.category-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-normal);
  display: block;
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.category-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: all var(--transition-normal);
}

.category-card:hover .category-icon {
  background: var(--color-primary);
  color: white;
}

.category-icon svg {
  width: 28px;
  height: 28px;
}

.category-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.category-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ============================================
   Trending SOPs
   ============================================ */

.trending-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.sop-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.sop-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.sop-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.sop-card-category {
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-light);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.sop-card-trending {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-warning);
}

.sop-card-trending svg {
  width: 14px;
  height: 14px;
}

.sop-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.4;
}

.sop-card-title a {
  color: inherit;
}

.sop-card-title a:hover {
  color: var(--color-primary);
}

.sop-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex: 1;
}

.sop-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.sop-card-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sop-card-meta-item svg {
  width: 14px;
  height: 14px;
}

/* ============================================
   How It Works
   ============================================ */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.step-card {
  text-align: center;
  position: relative;
}

.step-card:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 40px;
  right: -20%;
  width: 40%;
  height: 2px;
  background: var(--color-border);
}

.step-number {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-5);
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.step-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  max-width: 280px;
  margin: 0 auto;
}

/* ============================================
   Testimonials / Trust
   ============================================ */

.trust-section {
  text-align: center;
}

.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-10);
  margin-bottom: var(--space-8);
  opacity: 0.5;
  flex-wrap: wrap;
}

.trust-logo {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  max-width: 800px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  background: var(--color-bg-hero);
  padding: var(--space-12) 0;
  text-align: center;
  color: white;
}

.cta-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.cta-subtitle {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--space-7);
}

.cta-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--color-text-primary);
  color: white;
  padding: var(--space-12) 0 var(--space-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.footer-brand {
  max-width: 280px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-4);
}

.footer-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo-icon svg {
  width: 20px;
  height: 20px;
}

.footer-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-primary);
  color: white;
}

.social-link svg {
  width: 18px;
  height: 18px;
}

.footer-column-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: white;
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.footer-legal {
  display: flex;
  gap: var(--space-5);
}

.footer-legal a {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.footer-legal a:hover {
  color: white;
}

/* ============================================
   Breadcrumb
   ============================================ */

.breadcrumb-wrapper {
  padding: var(--space-4) 0;
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.breadcrumb-item {
  color: var(--color-text-muted);
}

.breadcrumb-item:hover {
  color: var(--color-primary);
}

.breadcrumb-separator {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ============================================
   Category Page Banner
   ============================================ */

.category-banner {
  background: var(--color-bg-hero);
  color: white;
  padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-10);
}

.category-banner-content {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.category-banner-icon {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-banner-icon svg {
  width: 40px;
  height: 40px;
}

.category-banner-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.category-banner-description {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--space-3);
}

.category-banner-count {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
}

/* ============================================
   Subcategory Cards
   ============================================ */

.subcategories-section {
  padding: var(--space-10) 0;
}

.subcategories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.subcategory-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: all var(--transition-normal);
}

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

.subcategory-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.subcategory-icon svg {
  width: 24px;
  height: 24px;
}

.subcategory-title {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.subcategory-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ============================================
   SOP Library Page
   ============================================ */

.library-header {
  padding: calc(var(--header-height) + var(--space-8)) 0 var(--space-8);
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.library-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.library-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* Library Search */
.library-search {
  max-width: 600px;
  margin-bottom: var(--space-6);
}

.library-search .search-box {
  box-shadow: var(--shadow-md);
}

.library-search .search-input {
  height: 52px;
  font-size: var(--font-size-base);
}

/* Horizontal Filters */
.filters-bar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.filter-dropdown {
  position: relative;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn svg {
  width: 16px;
  height: 16px;
}

.filter-tags {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-tag {
  padding: var(--space-2) var(--space-4);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-tag.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.filters-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.results-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* SOP List Cards */
.sop-list-section {
  padding: var(--space-8) 0;
}

.sop-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.sop-list-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-5);
  transition: all var(--transition-normal);
}

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

.sop-list-content {
  min-width: 0;
}

.sop-list-path {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.sop-list-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.sop-list-title a {
  color: var(--color-text-primary);
}

.sop-list-title a:hover {
  color: var(--color-primary);
}

.sop-list-excerpt {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.sop-list-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-light);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.sop-list-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.sop-list-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sop-list-meta-item svg {
  width: 16px;
  height: 16px;
}

.sop-list-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-3);
}

.difficulty-badge {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.difficulty-beginner {
  background: #D1FAE5;
  color: #065F46;
}

.difficulty-intermediate {
  background: #FEF3C7;
  color: #92400E;
}

.difficulty-advanced {
  background: #FEE2E2;
  color: #991B1B;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-8) 0;
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.pagination-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.pagination-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-btn svg {
  width: 16px;
  height: 16px;
}

.pagination-ellipsis {
  color: var(--color-text-muted);
}

/* ============================================
   SOP Detail Page
   ============================================ */

.sop-detail-header {
  padding: calc(var(--header-height) + var(--space-8)) 0 var(--space-6);
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.sop-detail-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  max-width: 800px;
}

.sop-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-5);
}

.sop-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.sop-meta-item svg {
  width: 16px;
  height: 16px;
}

.sop-meta-value {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.sop-detail-actions {
  display: flex;
  gap: var(--space-3);
}

/* Two Column Layout */
.sop-detail-layout {
  display: grid;
  /* grid-template-columns: 1fr 280px; */
  gap: var(--space-10);
  padding: var(--space-8) 0;
}

/* Main Content */
.sop-content {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  overflow: auto;
}

.sop-section {
  margin-bottom: var(--space-8);
}

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

.sop-section-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
}

.sop-section-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: var(--content-max);
}

.sop-section-content p {
  margin-bottom: var(--space-4);
}

.sop-section-content ul,
.sop-section-content ol {
  margin-left: var(--space-5);
  margin-bottom: var(--space-4);
}

.sop-section-content li {
  margin-bottom: var(--space-2);
  list-style: disc;
}

/* Procedure Steps */
.procedure-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.procedure-step {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
}

.step-number {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-title {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.step-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Note/Warning Blocks */
.note-block {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin: var(--space-5) 0;
}

.note-block.info {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
}

.note-block.warning {
  background: #FEF3C7;
  border: 1px solid #FCD34D;
}

.note-block.danger {
  background: #FEE2E2;
  border: 1px solid #FECACA;
}

.note-icon {
  flex-shrink: 0;
}

.note-icon svg {
  width: 20px;
  height: 20px;
}

.note-block.info .note-icon {
  color: var(--color-info);
}

.note-block.warning .note-icon {
  color: var(--color-warning);
}

.note-block.danger .note-icon {
  color: var(--color-error);
}

.note-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.note-title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

/* Table of Contents */
.toc-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
  height: fit-content;
}

.toc-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}

.toc-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.toc-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
}

.toc-link:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

.toc-link.active {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 500;
}

/* Helpful Block */
.helpful-block {
  margin-top: var(--space-8);
  padding: var(--space-6);
  background: var(--color-bg-light);
  border-radius: var(--radius-xl);
  text-align: center;
}

.helpful-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.helpful-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}

.helpful-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.helpful-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.helpful-btn svg {
  width: 18px;
  height: 18px;
}

/* Related SOPs */
.related-sops {
  margin-top: var(--space-10);
}

.related-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.related-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all var(--transition-normal);
}

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

.related-card-title {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.related-card:hover .related-card-title {
  color: var(--color-primary);
}

.related-card-path {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .trending-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .subcategories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .sop-detail-layout {
    grid-template-columns: 1fr;
  }
  
  .toc-sidebar {
    display: none;
  }
  
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero {
    padding-top: calc(var(--header-height) + var(--space-10));
    padding-bottom: var(--space-10);
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-base);
  }
  
  .search-input {
    height: 52px;
    font-size: var(--font-size-base);
    padding-right: 100px;
  }
  
  .search-filter-btn span {
    display: none;
  }
  
  .categories-grid,
  .trending-grid,
  .subcategories-grid,
  .steps-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }
  
  .step-card:not(:last-child)::after {
    display: none;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section {
    padding: var(--space-10) 0;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .sop-list-card {
    grid-template-columns: 1fr;
  }
  
  .sop-list-actions {
    flex-direction: row;
    align-items: center;
  }
  
  .filters-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filters-right {
    margin-left: 0;
    justify-content: space-between;
  }
  
  .sop-detail-actions {
    flex-direction: column;
  }
  
  .sop-detail-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .popular-searches {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .popular-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
  }
  
  .hero-links {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .helpful-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .helpful-btn {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }
  
  .category-banner-content {
    flex-direction: column;
    text-align: center;
  }
  
  .sop-content {
    padding: var(--space-5);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .header-inner {
    padding: 0 var(--space-4);
  }
  
  .logo span {
    display: none;
  }
  
  .hero-badge {
    font-size: var(--font-size-xs);
  }
  
  .category-card {
    padding: var(--space-5);
  }
  
  .category-icon {
    width: 52px;
    height: 52px;
  }
  
  .sop-detail-meta {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .procedure-step {
    flex-direction: column;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .header,
  .footer,
  .toc-sidebar,
  .sop-detail-actions,
  .helpful-block,
  .related-sops {
    display: none !important;
  }
  
  .sop-detail-layout {
    grid-template-columns: 1fr;
  }
  
  .sop-content {
    border: none;
    padding: 0;
  }
  
  .procedure-step {
    break-inside: avoid;
  }
}

/* ============================================
   Utility Classes
   ============================================ */

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

.text-center {
  text-align: center;
}

.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-6 { margin-bottom: var(--space-6); }


.ri-30px{
  font-size: 30px;
}
.ri-40px{
  font-size: 40px;
}

.attachment-slide {
  height: 200px;
  background-size: cover;
  background-position: center;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: end;
  padding: 10px;
}

.attachment-name {
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  padding: 6px 10px;
  border-radius: 5px;
  width: 100%;
  text-align: center;
  font-size: 13px;
  word-break: break-all;
}

#swiper-attachments {
  padding: 0 0 54px;
}


.section .sop-detail-layout article.sop-content h3 {
    margin: 15px 0;
}
.section .sop-detail-layout article.sop-content p {
    margin: 10px 0;
}
.section .sop-detail-layout article.sop-content ol {
    list-style: auto;
    margin: 15px 0;
    padding-left: 40px;
}
.section .sop-detail-layout article.sop-content ol li {
    margin: 15px 0;
}