/* 
 * Export Dispatch Register - Theme and Layout Stylesheet
 */

/* ==========================================================================
   1. VARIABLES & RESET
   ========================================================================== */
:root {
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: 'Plus Jakarta Sans', var(--font-primary);
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Colors */
  --primary: #2563eb;          /* Royal Blue */
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  
  --bg-app: #f8fafc;           /* Light slate grey background */
  --bg-card: #ffffff;
  --border-color: #e2e8f0;     /* Border slate grey */
  --border-hover: #cbd5e1;
  
  --text-main: #0f172a;        /* Deep navy slate for high readability */
  --text-muted: #64748b;       /* Muted slate for captions/subtitles */
  --text-light: #94a3b8;       /* Subtle elements */
  
  /* Status/Feedback Colors */
  --success: #059669;          /* Emerald Green */
  --success-light: #ecfdf5;
  --danger: #dc2626;           /* Crimson Red */
  --danger-light: #fef2f2;
  --danger-hover: #b91c1c;
  --warning: #d97706;          /* Amber Yellow */
  --warning-light: #fef3c7;
  
  /* Sidebar Specifics (Slate Theme for contrast) */
  --sidebar-bg: #0f172a;       /* Dark Navy */
  --sidebar-hover: #1e293b;
  --sidebar-active: #2563eb;
  --sidebar-text: #f1f5f9;
  --sidebar-text-muted: #94a3b8;

  /* Elevation (Shadows) */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-overlay: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  /* Layout Dimensions */
  --sidebar-width: 260px;
  --topbar-height: 70px;

  /* Safe Area Insets (for mobile notches/bars) */
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  height: 100vh;
  overflow: hidden; /* Main window doesn't scroll; components scroll internally */
}

a {
  color: inherit;
  text-decoration: none;
}

button, input {
  font: inherit;
}

/* Utilities */
.hidden {
  display: none !important;
}

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

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  letter-spacing: -0.02em;
}

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

.w-3 { width: 0.75rem; }
.h-3 { height: 0.75rem; }
.w-4 { width: 1rem; }
.h-4 { height: 1rem; }
.w-5 { width: 1.25rem; }
.h-5 { height: 1.25rem; }
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.w-8 { width: 2rem; }
.h-8 { height: 2rem; }

/* ==========================================================================
   2. APP LAYOUT CONTAINER
   ========================================================================== */
#app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  position: relative;
}

/* Left Sidebar */
#sidebar {
  width: var(--sidebar-width);
  background-color: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  height: 100%;
  z-index: 40;
  box-shadow: 4px 0 10px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
  padding: calc(1.5rem + var(--safe-area-top)) 1.75rem 1.5rem 1.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  color: #ffffff;
  white-space: nowrap;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  gap: 0.5rem;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 1rem;
  color: var(--sidebar-text-muted);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.925rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background-color: var(--sidebar-hover);
  color: #ffffff;
}

.nav-item-active {
  background-color: var(--sidebar-active);
  color: #ffffff;
}

.nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
}

.nav-item-active .nav-icon {
  opacity: 1;
}

.sidebar-footer {
  padding: 1rem 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.75rem;
  color: var(--sidebar-text-muted);
  display: flex;
  justify-content: space-between;
}

/* Main Viewport Content */
#main-viewport {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* Top Bar */
#topbar {
  height: calc(var(--topbar-height) + var(--safe-area-top));
  padding-top: var(--safe-area-top);
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  flex-shrink: 0;
  z-index: 30;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn:hover {
  background-color: var(--bg-app);
}

.page-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.topbar-right {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 380px;
}

.search-box-wrapper {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
}

.search-icon-inside {
  position: absolute;
  left: 0.875rem;
  color: var(--text-light);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.search-input-field {
  width: 100%;
  padding: 0.625rem 1rem 0.625rem 2.375rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  background-color: var(--bg-app);
  color: var(--text-main);
  outline: none;
  transition: all 0.15s ease;
}

.search-input-field:focus {
  border-color: var(--primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.topbar-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-light);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  margin-right: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  background-color: var(--bg-app);
  height: 38px;
  width: 38px;
  flex-shrink: 0;
}

.topbar-btn:hover {
  background-color: var(--border-color);
  color: var(--text-main);
  border-color: var(--text-light);
}

.topbar-btn:active {
  transform: scale(0.95);
}

.topbar-btn.refreshing span {
  animation: spin 1.2s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Main Content Area */
#main-content {
  flex-grow: 1;
  padding: 2rem;
  overflow-y: auto;
  position: relative;
}

/* Sidebar Overlay for Mobile */
#sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(2px);
  z-index: 35;
}

/* ==========================================================================
   3. PAGES: DASHBOARD
   ========================================================================== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.metric-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.metric-icon-circle {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-info {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.825rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.metric-value {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-main);
  line-height: 1.2;
}

/* Metric Colors */
.metric-dispatches .metric-icon-circle {
  background-color: var(--primary-light);
  color: var(--primary);
}
.metric-weight .metric-icon-circle {
  background-color: var(--success-light);
  color: var(--success);
}
.metric-destinations .metric-icon-circle {
  background-color: var(--warning-light);
  color: var(--warning);
}
.metric-products .metric-icon-circle {
  background-color: #f5f3ff; /* Purple light */
  color: #7c3aed;            /* Purple */
}

/* ==========================================================================
   4. PAGES: DISPATCH REGISTER (TABLE)
   ========================================================================== */
.register-container {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.register-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-main);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.1);
  transition: all 0.15s ease;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 6px rgba(37, 99, 235, 0.15);
}

/* Responsive Table */
.table-scroll-wrapper {
  overflow-x: auto;
  min-height: 250px;
}

.dispatch-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.dispatch-table th {
  position: sticky;
  top: 0;
  background-color: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.725rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  user-select: none;
  cursor: pointer;
  z-index: 10;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.dispatch-table th:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.dispatch-table th.sort-active {
  color: var(--primary);
}

.header-cell-content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sort-icon-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Table rows & cells */
.dispatch-table td {
  padding: 0.875rem 1.5rem;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  white-space: nowrap;
}

.dispatch-table tr.table-row:nth-child(even) {
  background-color: var(--bg-app);
}

.dispatch-table tr.table-row:hover {
  background-color: #f1f5f9;
}

.cell-truck {
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.cell-weight {
  font-weight: 600;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  line-height: 1.25;
}

.badge-product {
  background-color: #f1f5f9;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.badge-location {
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid #dbeafe;
}

/* Actions cell buttons */
.cell-actions {
  width: 120px;
}

.action-buttons-group {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.btn-action {
  background: transparent;
  border: none;
  padding: 0.45rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

/* View (Blue) */
.btn-view-action {
  color: var(--text-muted);
}
.btn-view-action:hover {
  background-color: var(--primary-light);
  color: var(--primary);
}

/* Edit (Amber/Orange) */
.btn-edit-action {
  color: var(--text-muted);
}
.btn-edit-action:hover {
  background-color: var(--warning-light);
  color: var(--warning);
}

/* Delete (Red) */
.btn-delete-action {
  color: var(--text-muted);
}
.btn-delete-action:hover {
  background-color: var(--danger-light);
  color: var(--danger);
}

/* Empty State styling */
.table-empty {
  padding: 3rem 1.5rem !important;
  text-align: center;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.empty-icon-wrapper {
  background-color: var(--bg-app);
  padding: 0.75rem;
  border-radius: 50%;
  display: inline-flex;
}

.empty-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ==========================================================================
   5. PAGINATION FOOTER
   ========================================================================== */
.pagination-footer {
  padding: 1rem 1.5rem calc(1rem + var(--safe-area-bottom)) 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  background-color: #ffffff;
}

.pagination-summary {
  font-size: 0.825rem;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-page-nav {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  color: var(--text-main);
}

.btn-page-nav:hover:not(.btn-disabled) {
  background-color: var(--bg-app);
  border-color: var(--border-hover);
}

.btn-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-numbers {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0 0.25rem;
}

.btn-page {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-page:hover {
  background-color: var(--bg-app);
}

.btn-page-active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  font-weight: 600;
}

.btn-page-active:hover {
  background-color: var(--primary);
}

/* ==========================================================================
   6. MODAL STYLES (BACKDROP & LAYOUT)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1.5rem;
}

.modal-box {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-overlay);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  max-height: 90vh;
}

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

.modal-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.btn-modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-modal-close:hover {
  background-color: var(--bg-app);
  color: var(--text-main);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  background-color: #f8fafc;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* Custom Modals Specifics */
.modal-confirm-box {
  max-width: 440px;
}

.confirm-alert-icon {
  margin: 0.5rem auto 1.25rem auto;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--danger-light);
  color: var(--danger);
  display: flex;
  align-items: center;
  justify-content: center;
}

.confirm-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 0.5rem;
}

.confirm-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.45;
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   7. FORM CONTROL STYLES (ADD/EDIT MODAL)
   ========================================================================== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

/* Spans full width */
.col-span-2 {
  grid-column: span 2;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.required-dot {
  color: var(--danger);
  margin-left: 0.2rem;
  font-weight: 700;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-main);
  background-color: #ffffff;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-control.input-error {
  border-color: var(--danger);
  background-color: var(--danger-light);
}

.form-control.input-error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.error-message {
  font-size: 0.725rem;
  color: var(--danger);
  margin-top: 0.25rem;
  font-weight: 500;
}

/* Buttons inside forms */
.btn-secondary {
  background-color: #ffffff;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  background-color: var(--bg-app);
  color: var(--text-main);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
  border: none;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 2px 4px rgba(220, 38, 38, 0.1);
}

.btn-danger:hover {
  background-color: var(--danger-hover);
  box-shadow: 0 4px 6px rgba(220, 38, 38, 0.15);
}

/* ==========================================================================
   8. DETAIL VIEW GRID
   ========================================================================== */
.detail-view-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.detail-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
  word-break: break-word;
}

.detail-value-truck {
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ==========================================================================
   9. TOAST NOTIFICATIONS
   ========================================================================== */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 380px;
  width: calc(100% - 4rem);
}

.toast {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary);
  pointer-events: auto;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.25s ease-in-out, transform 0.25s ease-in-out, border-color 0.25s;
  overflow: hidden;
}

.toast-fade-out {
  opacity: 0;
  transform: translateY(12px);
}

.toast-body {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.toast-icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.toast-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  line-height: 1.4;
}

/* Toast Color Types */
.toast-success {
  border-left-color: var(--success);
}
.toast-error {
  border-left-color: var(--danger);
}
.toast-info {
  border-left-color: var(--primary);
}

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

/* ==========================================================================
   10. RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 768px) {
  /* Layout shifts */
  #sidebar {
    position: fixed;
    left: calc(-1 * var(--sidebar-width));
    top: 0;
    transition: left 0.25s ease-in-out;
  }
  
  #sidebar.sidebar-open {
    left: 0;
  }
  
  #sidebar.sidebar-open + #sidebar-overlay {
    display: block;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  #topbar {
    padding: 0 1rem;
  }
  
  #main-content {
    padding: 1.25rem;
  }
  
  /* Detail view changes to single column */
  .detail-view-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  
  /* Form changes to single column */
  .form-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .col-span-2 {
    grid-column: span 1;
  }
  
  /* Dashboard layout */
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .metric-card {
    padding: 1.25rem;
  }
  
  /* Pagination responsiveness */
  .pagination-footer {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  /* Topbar search adjustment */
  .topbar-right {
    max-width: 220px;
  }
}

@media (max-width: 480px) {
  /* Tight spaces on small phones */
  #topbar {
    flex-direction: column;
    height: auto;
    padding: 0.75rem 1rem;
    gap: 0.75rem;
    align-items: stretch;
  }
  
  .topbar-right {
    max-width: 100%;
  }
  
  .register-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-primary {
    justify-content: center;
  }
}