/* ============================================
   KSS33 — Responsive / Mobile CSS
   Covers: Mobile (320px+), Tablet (768px+), Desktop (1024px+)
   ============================================ */

/* ===== GLOBAL RESPONSIVE BOX MODEL ===== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

/* ===== VIEWPORT META SAFETY (via CSS) ===== */
body {
  min-width: 320px;
  overflow-x: hidden;
}

/* ===== CONTENT AREA PADDING ===== */
@media (max-width: 480px) {
  .content-area {
    padding: 12px !important;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  .content-area {
    padding: 16px !important;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .content-area {
    padding: 24px !important;
  }
}

/* ===== PAGE HEADER ===== */
@media (max-width: 640px) {
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

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

  .page-header-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .page-header h2 {
    font-size: 1.2rem;
  }
}

/* ===== STAT CARDS GRID ===== */
@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: 1fr !important;
  }

  .stat-card {
    flex-direction: row;
    align-items: center;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

/* ===== CARD ===== */
@media (max-width: 480px) {
  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px !important;
  }

  .card-body {
    padding: 14px !important;
  }
}

/* ===== TOOLBAR ===== */
@media (max-width: 640px) {
  .toolbar {
    flex-direction: column;
    gap: 10px;
  }

  .toolbar-left,
  .toolbar-right {
    width: 100%;
    flex-direction: column;
    gap: 8px;
  }

  .search-input {
    width: 100%;
  }

  .search-input input {
    width: 100%;
  }

  .filter-select {
    width: 100%;
  }
}

/* ===== DATA TABLES (Scrollable on mobile) ===== */
.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
  .data-table {
    min-width: 540px;
  }

  .data-table th,
  .data-table td {
    padding: 10px 12px;
    font-size: 0.8rem;
  }

  .table-actions {
    flex-wrap: nowrap;
    gap: 4px;
  }

  .btn-icon {
    width: 30px;
    height: 30px;
  }
}

@media (max-width: 480px) {
  .data-table {
    min-width: 480px;
  }
}

/* ===== MODALS ===== */
@media (max-width: 640px) {
  .modal-backdrop {
    padding: 0;
    align-items: flex-end;
  }

  .modal {
    max-width: 100% !important;
    width: 100% !important;
    border-radius: 16px 16px 0 0;
    max-height: 92vh;
    overflow-y: auto;
  }

  .modal-header {
    padding: 16px;
  }

  .modal-body {
    padding: 16px;
  }

  .modal-footer {
    padding: 12px 16px;
    gap: 8px;
    flex-direction: column;
  }

  .modal-footer .btn {
    width: 100%;
    justify-content: center;
  }

  .form-row {
    flex-direction: column !important;
    gap: 0 !important;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .modal {
    max-width: 560px !important;
    width: 90vw !important;
  }
}

/* ===== FORMS ===== */
@media (max-width: 640px) {
  .form-group {
    margin-bottom: 12px;
  }

  .form-control {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }

  input[type="text"],
  input[type="number"],
  input[type="date"],
  input[type="email"],
  input[type="password"],
  select,
  textarea {
    font-size: 16px !important; /* Prevents iOS zoom */
  }
}

/* ===== PAGINATION ===== */
@media (max-width: 640px) {
  .pagination-bar {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }

  .pagination-buttons {
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
  }

  .pagination-info {
    font-size: 0.75rem;
    text-align: center;
  }
}

/* ===== BADGES ===== */
@media (max-width: 480px) {
  .badge {
    font-size: 0.65rem;
    padding: 2px 6px;
  }
}

/* ===== SITE DETAILS PAGE ===== */
@media (max-width: 768px) {
  .site-detail-grid {
    grid-template-columns: 1fr !important;
  }

  .site-stats-row {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 480px) {
  .site-stats-row {
    grid-template-columns: 1fr !important;
  }
}

/* ===== INLINE TABLE (dispatch form in modals) ===== */
@media (max-width: 640px) {
  .inline-table {
    min-width: 400px;
  }
}

/* ===== CHARTS ===== */
@media (max-width: 640px) {
  .chart-container canvas {
    max-height: 200px !important;
  }
}

/* ===== MOBILE HEADER ===== */
@media (max-width: 1024px) {
  .mobile-header {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  }
}

/* ===== SIDEBAR MOBILE ===== */
@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    height: 100%;
    z-index: 1000;
    transition: left 0.3s ease;
    width: 260px !important;
    min-width: 260px !important;
    box-shadow: 4px 0 24px rgba(0,0,0,0.15);
  }

  .sidebar.open {
    left: 0;
  }
}

/* ===== REPORTS GRID ===== */
@media (max-width: 768px) {
  .reports-grid,
  .report-cards-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ===== BUTTON GROUPS ON MOBILE ===== */
@media (max-width: 480px) {
  .btn-group {
    flex-direction: column;
    gap: 8px;
  }

  .btn-group .btn {
    width: 100%;
  }
}

/* ===== AUTH PAGE ===== */
@media (max-width: 480px) {
  .auth-card {
    margin: 16px;
    padding: 24px 20px !important;
    border-radius: 12px;
  }
}

/* ===== SCROLLBAR MOBILE ===== */
@media (max-width: 768px) {
  ::-webkit-scrollbar {
    width: 4px;
    height: 4px;
  }

  ::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.2);
    border-radius: 4px;
  }
}

/* ===== TOUCH TARGETS (minimum 44px for accessibility) ===== */
@media (max-width: 768px) {
  .btn, .nav-item, .btn-icon {
    min-height: 44px;
  }

  .btn-sm {
    min-height: 36px;
  }
}

/* ===== UTILITY CLASSES ===== */
@media (max-width: 640px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 641px) {
  .hide-desktop { display: none !important; }
}

@media (max-width: 768px) {
  .text-truncate-mobile {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
  }
}