/* Responsive Design — Mobile-First Approach */

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Base Mobile (320px - 768px) */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* Mobile Button Touch Targets */
.btn {
  min-height: 44px;
  padding: 12px 20px !important;
  font-size: var(--font-size-sm);
}

/* Mobile Card Spacing */
.card {
  padding: 16px !important;
  margin-bottom: var(--space-md);
}

section {
  padding: 16px !important;
  margin-bottom: var(--space-md);
}

/* Mobile Headings */
h1 {
  font-size: 22px;
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: 18px;
  line-height: 1.4;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 16px;
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}

/* Mobile Text */
p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

/* Mobile Grid → Single Column */
.grid,
.alert-grid,
.stats-grid,
.menu-grid,
[class*="grid"] {
  grid-template-columns: 1fr !important;
  gap: var(--space-md) !important;
}

/* Mobile Table → Card Layout */
table {
  border: none;
  display: block;
  width: 100%;
  box-shadow: none;
}

thead {
  display: none;
}

tbody {
  display: block;
}

tr {
  display: block;
  border: 1.5px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  background: linear-gradient(145deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08), 0 1px 4px rgba(0, 0, 0, 0.04);
}

tr:hover {
  background-color: var(--bg-secondary);
  border-color: var(--primary-color);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
}

td {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0 !important;
  border: none;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

td::before {
  content: attr(data-label);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
  min-width: 30%;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
}

td:last-child {
  border: none;
}

/* Mobile Sidebar */
.sidebar {
  position: fixed;
  left: -100%;
  top: 0;
  width: 240px;
  height: 100vh;
  transition: left var(--transition-base);
  z-index: 1000;
  overflow-y: auto;
}

.sidebar.open {
  left: 0;
  box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
}

/* Mobile Hamburger Menu */
.mobile-menu-toggle {
  display: block;
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 1001;
  width: 48px;
  height: 48px;
  background: var(--primary-color);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: white;
  font-size: 24px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle:active {
  transform: scale(0.95);
}

/* Mobile Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.open {
  display: block;
}

/* Mobile Form Elements */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea,
select {
  min-height: 44px;
  font-size: 16px; /* Prevent zoom on iOS */
  padding: 12px var(--space-md) !important;
}

/* Mobile Input Focus */
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Mobile Modal */
.modal {
  width: 90vw !important;
  max-width: 400px;
  max-height: 80vh;
  overflow-y: auto;
}

/* Mobile Padding Adjustments */
.container {
  padding: var(--space-md);
  max-width: 100%;
}

main {
  margin-left: 0 !important;
  padding: var(--space-md);
}

/* Mobile Flex Stacking */
.flex-row {
  flex-direction: column !important;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Tablet (768px - 1024px) */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@media (min-width: 768px) {
  /* Tablet Headings */
  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 20px;
  }

  h3 {
    font-size: 18px;
  }

  /* Tablet Button */
  .btn {
    min-height: 40px;
    padding: 10px 20px !important;
  }

  /* Tablet Card & Section */
  .card {
    padding: 20px !important;
  }

  section {
    padding: 20px !important;
  }

  /* Tablet Grid → 2 Columns */
  .grid,
  .alert-grid,
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Tablet Sidebar */
  .sidebar {
    position: fixed;
    left: 0;
    width: 200px;
    transform: none !important;
  }

  .mobile-menu-toggle {
    display: none;
  }

  .sidebar-overlay {
    display: none !important;
  }

  main {
    margin-left: 200px !important;
  }

  /* Tablet Container */
  .container {
    max-width: 720px;
    padding: var(--space-lg);
  }

  /* Tablet Table */
  table {
    display: table;
    border: 1.5px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08), 0 1px 4px rgba(0, 0, 0, 0.04);
    overflow: hidden;
  }

  thead {
    display: table-header-group;
  }

  tbody {
    display: table-row-group;
  }

  tr {
    display: table-row;
    border: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 0 !important;
    margin: 0 !important;
    background: transparent;
    box-shadow: none;
  }

  tr:hover {
    background-color: var(--bg-secondary);
    box-shadow: none;
  }

  td,
  th {
    display: table-cell;
    padding: var(--space-md) var(--space-lg) !important;
    text-align: left;
  }

  td::before {
    content: none;
  }

  th {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    font-weight: var(--font-weight-bold);
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Desktop (1024px - 1440px) */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@media (min-width: 1024px) {
  /* Desktop Headings */
  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 22px;
  }

  h3 {
    font-size: 20px;
  }

  /* Desktop Button */
  .btn {
    min-height: 40px;
  }

  /* Desktop Card & Section */
  .card {
    padding: var(--space-lg) !important;
  }

  section {
    padding: var(--space-lg) !important;
  }

  /* Desktop Grid → 3 Columns */
  .grid,
  .alert-grid,
  .stats-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }

  /* Desktop Sidebar */
  .sidebar {
    width: 240px;
  }

  main {
    margin-left: 240px !important;
  }

  /* Desktop Container */
  .container {
    max-width: 960px;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Large Desktop (1440px+) */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@media (min-width: 1440px) {
  /* Large Desktop Headings */
  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 24px;
  }

  /* Large Desktop Container */
  .container {
    max-width: 1200px;
  }

  /* Large Desktop Grid → 4 Columns */
  .grid {
    grid-template-columns: repeat(4, 1fr) !important;
  }

  .alert-grid,
  .stats-grid {
    grid-template-columns: repeat(4, 1fr) !important;
  }

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

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Print Styles */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@media print {
  .no-print,
  .sidebar,
  .mobile-menu-toggle,
  .sidebar-overlay {
    display: none !important;
  }

  body {
    background-color: white;
    color: black;
  }

  a {
    text-decoration: none;
  }

  .card,
  section {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .btn {
    border: 1px solid #333;
    background: white !important;
    color: black !important;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Ultra-Small Devices (320px - 480px) - Extra Mobile */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@media (max-width: 480px) {
  /* Extra Small Button */
  .btn {
    font-size: 13px;
    padding: 10px 16px !important;
  }

  /* Extra Small Headings */
  h1 {
    font-size: 20px;
  }

  h2 {
    font-size: 17px;
  }

  h3 {
    font-size: 15px;
  }

  /* Extra Small Input */
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="number"],
  input[type="date"],
  input[type="time"],
  textarea,
  select {
    font-size: 14px;
    padding: 10px 12px !important;
  }

  /* Extra Small Card */
  .card {
    padding: 12px !important;
  }

  section {
    padding: 12px !important;
  }

  .container {
    padding: var(--space-sm);
  }

  main {
    padding: var(--space-sm);
  }

  /* Extra Small Modal */
  .modal {
    width: 95vw !important;
    max-width: 320px;
  }

  /* Extra Small Sidebar */
  .sidebar {
    width: 220px;
  }

  /* Table Adjustments */
  td {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-xs) 0 !important;
  }

  td::before {
    margin-bottom: var(--space-xs);
    display: block;
  }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
/* Footer Responsive                                              */
/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@media (max-width: 768px) {
  footer > div:first-child {
    grid-template-columns: 1fr 1fr !important;
    gap: 30px !important;
    padding: 36px 20px 28px !important;
  }
}

@media (max-width: 480px) {
  footer > div:first-child {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    padding: 30px 16px 20px !important;
  }

  footer > div:last-child {
    flex-direction: column !important;
    text-align: center;
    gap: 12px !important;
  }
}