/**
 * TenderRadar App Styles
 * Shared styles for dashboard, profile, alerts, and other app pages
 * Complements the landing page styles.css
 */

/* ===========================
   EXTENDED COLOR VARIABLES
   =========================== */
:root {
  /* Existing variables */
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-alt: #f3f4f6;
  --border: #e5e7eb;
  --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 -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);

  /* App-specific colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --info: #3b82f6;
  --info-light: #dbeafe;
  --neutral-50: #f9fafb;
  --neutral-100: #f3f4f6;
  --neutral-200: #e5e7eb;
  --neutral-300: #d1d5db;
  --neutral-400: #9ca3af;
  --neutral-500: #6b7280;
  --neutral-600: #4b5563;
  --neutral-700: #374151;
  --neutral-800: #1f2937;
  --neutral-900: #111827;
}

/* ===========================
   APP LAYOUT & STRUCTURE
   =========================== */

/* Page wrapper for proper layout */
html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
}

/* Main content area that sits between navbar and footer */
main, .app-main {
  flex: 1;
  padding-top: 80px; /* Account for fixed navbar */
  padding-bottom: 0;
  min-height: calc(100vh - 160px); /* Approximate for navbar + footer */
}

/* ===========================
   NAVBAR STYLES
   =========================== */

.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  height: 72px;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.25rem;
  transition: opacity 0.2s;
}

.brand-link:hover {
  opacity: 0.8;
}

.nav-logo {
  width: auto;
  height: 50px;
  display: block;
}

.brand-text {
  color: var(--text-primary);
  display: none;
}

/* Mobile menu wrapper */
.nav-menu-wrapper {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex: 1;
  justify-content: flex-end;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  transition: all 0.2s;
  position: relative;
}

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

.nav-link.active {
  color: var(--primary);
  background: var(--primary);
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1) 0%, rgba(30, 64, 175, 0.05) 100%);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

/* User menu */
.nav-user {
  position: relative;
  display: flex;
  align-items: center;
}

.user-menu-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: none;
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--text-primary);
  transition: all 0.2s;
}

.user-menu-toggle:hover {
  background: var(--bg-secondary);
  border-color: var(--primary);
}

.user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.user-email {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dropdown-icon {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.user-menu-toggle.active .dropdown-icon {
  transform: rotate(180deg);
}

/* User dropdown menu */
.user-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 2000;
}

.dropdown-link {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all 0.2s;
}

.dropdown-link:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

.dropdown-link:first-child {
  border-radius: 0.375rem 0.375rem 0 0;
}

.dropdown-link:last-child {
  border-radius: 0 0 0.375rem 0.375rem;
}

.logout-btn {
  color: var(--danger);
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.05);
  color: var(--danger);
}

/* Unauthenticated nav */
.nav-auth {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: auto;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s;
  border-radius: 1px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(10px, 10px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===========================
   FOOTER STYLES
   =========================== */

.app-footer {
  background: var(--neutral-900);
  color: var(--text-light);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.footer-logo {
  width: auto;
  height: 40px;
  display: block;
}

.footer-brand-text {
  font-weight: 700;
  font-size: 1.125rem;
  color: white;
}

.footer-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-light);
}

.footer-heading {
  font-weight: 600;
  color: white;
  margin: 0;
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-light);
}

.footer-bottom p {
  margin: 0;
}

.footer-social {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  text-decoration: none;
  transition: all 0.2s;
}

.social-link:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

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

/* ===========================
   CARD COMPONENTS
   =========================== */

.card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0.5rem 0 0;
}

.card-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

/* Card variants */
.card-primary {
  border-color: var(--primary-light);
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.card-success {
  border-color: var(--success-light);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(16, 185, 129, 0.02) 100%);
}

.card-warning {
  border-color: var(--warning-light);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(245, 158, 11, 0.02) 100%);
}

.card-danger {
  border-color: var(--danger-light);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(239, 68, 68, 0.02) 100%);
}

/* ===========================
   TABLE COMPONENTS
   =========================== */

.table-wrapper {
  overflow-x: auto;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-primary);
}

thead {
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--border);
}

th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  color: var(--text-primary);
}

tbody tr:hover {
  background: var(--bg-secondary);
}

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

/* Table actions */
.table-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.table-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  background: var(--bg-primary);
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0;
}

.table-action-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary);
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1) 0%, rgba(30, 64, 175, 0.05) 100%);
}

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

/* ===========================
   FORM ELEMENTS
   =========================== */

.form-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.9375rem;
}

.label-required::after {
  content: ' *';
  color: var(--danger);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="tel"],
textarea,
select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: all 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

input[type="text"]:disabled,
input[type="email"]:disabled,
select:disabled {
  background: var(--bg-secondary);
  color: var(--text-light);
  cursor: not-allowed;
}

/* Form error state */
input.error,
textarea.error,
select.error {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.02);
}

input.error:focus,
textarea.error:focus,
select.error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-error {
  font-size: 0.8125rem;
  color: var(--danger);
  margin-top: 0.25rem;
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Select dropdown */
select {
  appearance: none;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

/* Form layouts */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.form-row-2 {
  grid-template-columns: repeat(2, 1fr);
}

/* ===========================
   BUTTON VARIANTS
   =========================== */

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-size: 0.9375rem;
  line-height: 1.5;
  white-space: nowrap;
  user-select: none;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  background: var(--text-light);
  cursor: not-allowed;
  transform: none;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

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

.btn-danger:hover {
  background: #dc2626;
}

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

.btn-success:hover {
  background: #059669;
}

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

.btn-warning:hover {
  background: #d97706;
}

/* Button sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn-block {
  display: block;
  width: 100%;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
}

.btn-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ===========================
   BADGES & TAGS
   =========================== */

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: rgba(30, 64, 175, 0.15);
  color: var(--primary);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.badge-info {
  background: rgba(59, 130, 246, 0.15);
  color: var(--info);
}

.badge-neutral {
  background: rgba(107, 114, 128, 0.15);
  color: var(--text-secondary);
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  border-radius: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  transition: all 0.2s;
}

.tag:hover {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.05) 0%, rgba(30, 64, 175, 0.02) 100%);
}

.tag-removable {
  cursor: pointer;
  padding-right: 0.5rem;
}

.tag-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  margin-left: 0.25rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.tag-close:hover {
  opacity: 1;
}

/* ===========================
   ALERTS & NOTIFICATIONS
   =========================== */

.alert {
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  border-left: 4px solid;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.alert-success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(16, 185, 129, 0.02) 100%);
  border-left-color: var(--success);
  color: var(--success);
}

.alert-error,
.alert-danger {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(239, 68, 68, 0.02) 100%);
  border-left-color: var(--danger);
  color: var(--danger);
}

.alert-warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(245, 158, 11, 0.02) 100%);
  border-left-color: var(--warning);
  color: var(--warning);
}

.alert-info {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
  border-left-color: var(--info);
  color: var(--info);
}

.alert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.alert-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.alert-title {
  font-weight: 600;
  font-size: 0.9375rem;
}

.alert-message {
  font-size: 0.875rem;
  opacity: 0.9;
}

.alert-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
  padding: 0;
  flex-shrink: 0;
  margin-top: -0.25rem;
}

.alert-close:hover {
  opacity: 1;
}

/* ===========================
   LOADING STATES
   =========================== */

.spinner {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(30, 64, 175, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spinner-sm {
  width: 1rem;
  height: 1rem;
}

.spinner-lg {
  width: 2rem;
  height: 2rem;
}

.spinner-dark {
  border-color: rgba(0, 0, 0, 0.1);
  border-top-color: var(--text-primary);
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-secondary) 0%, var(--bg-alt) 50%, var(--bg-secondary) 100%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 1rem;
  border-radius: 0.375rem;
  margin-bottom: 0.75rem;
}

.skeleton-text-sm {
  height: 0.75rem;
}

.skeleton-text-lg {
  height: 1.25rem;
}

/* ===========================
   EMPTY STATES
   =========================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  text-align: center;
  gap: 1rem;
}

.empty-state-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.empty-state-icon svg {
  width: 32px;
  height: 32px;
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.empty-state-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 400px;
  margin: 0;
}

.empty-state-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* ===========================
   DASHBOARD GRID LAYOUTS
   =========================== */

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.page-header {
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.page-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.page-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin: 0.5rem 0 0;
}

.page-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Grid layouts */
.grid {
  display: grid;
  gap: 1.5rem;
}

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

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}

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

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

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

/* Dashboard stat card */
.stat-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

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

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 1rem;
}

.stat-change {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

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

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

/* ===========================
   SIDEBAR NAVIGATION (if needed)
   =========================== */

.app-layout {
  display: flex;
  min-height: 100vh;
  padding-top: 72px;
}

.app-sidebar {
  width: 250px;
  background: var(--bg-primary);
  border-right: 1px solid var(--border);
  padding: 2rem 0;
  position: sticky;
  top: 72px;
  height: calc(100vh - 72px);
  overflow-y: auto;
}

.sidebar-item {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: all 0.2s;
  border-left: 3px solid transparent;
  margin: 0 0.75rem;
  border-radius: 0 0.375rem 0.375rem 0;
}

.sidebar-item:hover {
  color: var(--primary);
  background: var(--bg-secondary);
}

.sidebar-item.active {
  color: var(--primary);
  background: linear-gradient(90deg, rgba(30, 64, 175, 0.1) 0%, rgba(30, 64, 175, 0.05) 100%);
  border-left-color: var(--primary);
  font-weight: 600;
}

.app-content {
  flex: 1;
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
    z-index: 999;
  }

  .nav-menu-wrapper.active .nav-menu {
    max-height: 500px;
  }

  .nav-link {
    border-radius: 0;
    padding: 1rem 1.5rem;
    border-left: 3px solid transparent;
    margin: 0;
  }

  .nav-link.active {
    border-left-color: var(--primary);
    background: var(--bg-secondary);
  }

  .nav-link.active::after {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .page-header {
    flex-direction: column;
    align-items: stretch;
  }

  .page-actions {
    width: 100%;
    flex-direction: column;
  }

  .page-actions .btn {
    width: 100%;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }

  .table-wrapper {
    font-size: 0.875rem;
  }

  th,
  td {
    padding: 0.75rem;
  }

  .form-row-2 {
    grid-template-columns: 1fr;
  }

  .app-sidebar {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-social {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .app-container {
    padding: 1rem;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .card {
    padding: 1rem;
  }

  .btn {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
  }

  .form-group {
    margin-bottom: 1rem;
  }

  input[type="text"],
  input[type="email"],
  input[type="password"],
  textarea,
  select {
    padding: 0.625rem 0.75rem;
    font-size: 1rem; /* Prevents zoom on iOS */
  }

  table {
    font-size: 0.8125rem;
  }

  th,
  td {
    padding: 0.5rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .alert {
    flex-direction: column;
  }

  .user-email {
    display: none;
  }
}

/* ===========================
   UTILITY CLASSES
   =========================== */

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }

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

.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.bg-primary { background: var(--primary); }
.bg-secondary { background: var(--bg-secondary); }

.hidden { display: none; }
.visible { display: block; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}