/* Validation Labs - Main Stylesheet */
/* Professional regulatory compliance SaaS design */

:root {
  /* Primary Colors */
  --navy-900: #0d1b2a;
  --navy-800: #1b263b;
  --navy-700: #1a365d;
  --navy-600: #2c5282;
  --navy-500: #3182ce;
  
  /* Accent Colors */
  --teal-500: #38b2ac;
  --teal-400: #4fd1c5;
  --teal-600: #2c7a7b;
  
  /* Status Colors */
  --success: #48bb78;
  --warning: #ed8936;
  --danger: #f56565;
  --info: #4299e1;
  
  /* Neutrals */
  --gray-50: #f7fafc;
  --gray-100: #edf2f7;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e0;
  --gray-400: #a0aec0;
  --gray-500: #718096;
  --gray-600: #4a5568;
  --gray-700: #2d3748;
  --gray-800: #1a202c;
  --gray-900: #171923;
  
  /* Typography */
  --font-display: 'Outfit', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition: 200ms ease;
  --transition-slow: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.3;
  color: var(--navy-800);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--gray-600);
}

a {
  color: var(--navy-600);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--teal-500);
}

/* Utility Classes */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--navy-600) 0%, var(--navy-700) 100%);
  color: white;
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--navy-500) 0%, var(--navy-600) 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--navy-700);
  border: 1px solid var(--gray-300);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--navy-500);
  color: var(--navy-600);
}

.btn-accent {
  background: linear-gradient(135deg, var(--teal-500) 0%, var(--teal-600) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-accent:hover {
  background: linear-gradient(135deg, var(--teal-400) 0%, var(--teal-500) 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--radius);
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--gray-100);
  background: var(--gray-50);
}

/* Form Elements */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--gray-800);
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--navy-500);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.15);
}

.form-input::placeholder {
  color: var(--gray-400);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-help {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-top: 0.375rem;
}

.form-error {
  font-size: 0.8125rem;
  color: var(--danger);
  margin-top: 0.375rem;
}

/* Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

thead {
  background: var(--gray-50);
}

th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
}

tbody tr:hover {
  background: var(--gray-50);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-success {
  background: rgba(72, 187, 120, 0.15);
  color: #22543d;
}

.badge-warning {
  background: rgba(237, 137, 54, 0.15);
  color: #744210;
}

.badge-danger {
  background: rgba(245, 101, 101, 0.15);
  color: #742a2a;
}

.badge-info {
  background: rgba(66, 153, 225, 0.15);
  color: #2a4365;
}

.badge-neutral {
  background: var(--gray-100);
  color: var(--gray-600);
}

/* Status Indicators */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.5rem;
}

.status-dot.active { background: var(--success); }
.status-dot.warning { background: var(--warning); }
.status-dot.inactive { background: var(--gray-400); }
.status-dot.overdue { background: var(--danger); }

/* Navigation - Marketing */
.nav-marketing {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: all var(--transition);
}

.nav-marketing.scrolled {
  padding: 0.75rem 0;
  background: rgba(13, 27, 42, 0.98);
}

.nav-marketing .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}

.nav-logo svg {
  width: 40px;
  height: 40px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--gray-300);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: white;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Navigation - App */
.nav-app {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  background: var(--navy-800);
  border-bottom: 1px solid var(--navy-700);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
}

.nav-app .nav-logo {
  font-size: 1.25rem;
}

.nav-app-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Sidebar - App */
.sidebar {
  position: fixed;
  top: 64px;
  left: 0;
  bottom: 0;
  width: 260px;
  background: var(--gray-800);
  border-right: 1px solid var(--gray-700);
  overflow-y: auto;
  z-index: 900;
}

.sidebar-nav {
  padding: 1rem 0;
}

.sidebar-section {
  margin-bottom: 0.5rem;
}

.sidebar-title {
  padding: 0.5rem 1.25rem;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  color: var(--gray-400);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: all var(--transition);
  border-left: 3px solid transparent;
}

.sidebar-link:hover {
  background: var(--gray-700);
  color: white;
}

.sidebar-link.active {
  background: rgba(56, 178, 172, 0.1);
  color: var(--teal-400);
  border-left-color: var(--teal-400);
}

.sidebar-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-link.disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* Main Content Area */
.main-content {
  margin-left: 260px;
  margin-top: 64px;
  min-height: calc(100vh - 64px);
  padding: 2rem;
  background: var(--gray-100);
}

/* Page Header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: 0.25rem;
}

.page-header p {
  color: var(--gray-500);
  margin: 0;
}

.page-header-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow);
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.stat-card-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-500);
}

.stat-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-card-icon.teal {
  background: rgba(56, 178, 172, 0.15);
  color: var(--teal-600);
}

.stat-card-icon.blue {
  background: rgba(66, 153, 225, 0.15);
  color: var(--navy-600);
}

.stat-card-icon.orange {
  background: rgba(237, 137, 54, 0.15);
  color: #c05621;
}

.stat-card-icon.red {
  background: rgba(245, 101, 101, 0.15);
  color: #c53030;
}

.stat-card-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--navy-800);
}

.stat-card-change {
  font-size: 0.8125rem;
  margin-top: 0.25rem;
}

.stat-card-change.positive {
  color: var(--success);
}

.stat-card-change.negative {
  color: var(--danger);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: white;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95) translateY(20px);
  transition: all var(--transition);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--navy-800);
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--gray-400);
  cursor: pointer;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--gray-600);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Alerts/Notifications */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert-success {
  background: rgba(72, 187, 120, 0.1);
  border: 1px solid rgba(72, 187, 120, 0.3);
  color: #22543d;
}

.alert-warning {
  background: rgba(237, 137, 54, 0.1);
  border: 1px solid rgba(237, 137, 54, 0.3);
  color: #744210;
}

.alert-danger {
  background: rgba(245, 101, 101, 0.1);
  border: 1px solid rgba(245, 101, 101, 0.3);
  color: #742a2a;
}

.alert-info {
  background: rgba(66, 153, 225, 0.1);
  border: 1px solid rgba(66, 153, 225, 0.3);
  color: #2a4365;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  color: var(--gray-300);
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.empty-state-text {
  color: var(--gray-500);
  margin-bottom: 1.5rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: 1.5rem;
}

.tab {
  padding: 0.875rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-500);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: -1px;
}

.tab:hover {
  color: var(--gray-700);
}

.tab.active {
  color: var(--navy-600);
  border-bottom-color: var(--navy-600);
}

/* Search Input with Icon */
.search-wrapper {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-wrapper svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--gray-400);
}

.search-wrapper input {
  padding-left: 2.75rem;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-100);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
  z-index: 100;
}

.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--gray-700);
  text-decoration: none;
  transition: background var(--transition);
}

.dropdown-item:hover {
  background: var(--gray-50);
}

.dropdown-divider {
  height: 1px;
  background: var(--gray-100);
  margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .nav-links {
    display: none;
  }
  
  .main-content {
    padding: 1rem;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { 
    opacity: 0;
    transform: translateY(20px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-slide-up {
  animation: slideUp 0.5s ease forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.5s ease forwards;
}

/* Staggered animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }