/* ==========================================================================
   Tasslim Alwataniah - Main Stylesheet
   Design Language: Modern Dark Slate & Vibrant Accents
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette - White Theme */
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F1F5F9;
  --bg-card: var(--bg-secondary);
  --bg-card-hover: #F8FAFC;
  
  --text-primary: #0F172A;
  --text-main: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  
  --accent-primary: #0D6EFD;      /* Royal Blue */
  --accent-color: #0D6EFD;
  --accent-hover: #0B5ED7;
  --accent-primary-glow: rgba(13, 110, 253, 0.15);
  --accent-light: rgba(13, 110, 253, 0.15);
  
  --accent-success: #198754;      /* Emerald Green */
  --success: #198754;
  --success-light: rgba(25, 135, 84, 0.15);
  --accent-success-glow: rgba(25, 135, 84, 0.15);
  
  --accent-error: #DC3545;        /* Crimson Red */
  --danger: #DC3545;
  --danger-light: rgba(220, 53, 69, 0.15);
  --accent-error-glow: rgba(220, 53, 69, 0.15);
  
  --warning: #F5A623;
  --warning-light: rgba(245, 166, 35, 0.15);
  
  /* Layout & Spacing */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;
  
  --border-color: rgba(0, 0, 0, 0.08);
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px var(--accent-primary-glow);
  
  --container-width: 1100px;
}

/* Base Reset & Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-sans);
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Background Gradients/Glow Effects */
body::before {
  content: "";
  position: absolute;
  top: -10%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(13, 110, 253, 0.05) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: "";
  position: absolute;
  bottom: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(25, 135, 84, 0.05) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h2 { font-size: 1.8rem; margin-bottom: 24px; }
h3 { font-size: 1.4rem; margin-bottom: 16px; }

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  filter: brightness(1.2);
}

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

/* Header & Navigation (Replaces Sidebar) */
header.top-navbar {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-icon {
  background: var(--bg-tertiary);
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 1.25rem;
  flex-shrink: 0;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
  border: 1px solid var(--border-color);
}

.brand-logo {
  height: 70px;
  width: auto;
  object-fit: contain;
  border-radius: var(--border-radius-sm);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  font-family: var(--font-display);
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.nav-tabs {
  display: flex;
  background-color: var(--bg-tertiary);
  padding: 4px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  align-items: center;
  gap: 4px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.6rem 1.25rem;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Admin Sidebar Layout */
.admin-layout {
  display: flex;
  min-height: calc(100vh - 72px); /* minus header */
}

.admin-sidebar {
  width: 250px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin-sidebar .tab-btn {
  width: 100%;
  justify-content: flex-start;
  padding: 12px 16px;
  font-size: 15px;
}

.admin-content-area {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
}

.tab-btn.danger-tab {
  color: var(--danger);
}
.tab-btn.danger-tab:hover {
  background-color: var(--danger-light);
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-overlay.show { display: flex; }

.modal-content {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--border-radius-lg);
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.modal-header h3 { margin: 0; }
.modal-close {
  background: transparent; border: none; font-size: 20px; cursor: pointer; color: var(--text-muted);
}
.modal-close:hover { color: var(--danger); }

/* App Main Container */
main.main-content {
  flex: 1;
  max-width: var(--container-width);
  width: 100%;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

main.main-content > * {
  width: 100%;
  max-width: 800px; /* Keep containers contained and centered */
}

/* Cards */
.glass-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  transition: var(--transition-normal);
  margin-bottom: 24px;
}

.glass-card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #2563eb);
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4), var(--shadow-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #b91c1c);
  color: white;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-full {
  width: 100%;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.75rem;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.form-control {
  width: 100%;
  padding: 0.95rem 1.25rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-normal);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
  background-color: #FFFFFF;
}

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

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* Data Tables */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 16px;
}

.data-table th, .data-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

.data-table th {
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
}

.data-table th:first-child { border-top-left-radius: var(--border-radius-sm); }
.data-table th:last-child { border-top-right-radius: var(--border-radius-sm); }

.data-table tr:hover td {
  background-color: var(--bg-tertiary);
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border-radius: 4px;
  font-size: 12px;
  border: 1px solid var(--border-color);
}
.tag.role-admin {
  background-color: #fee2e2;
  color: #ef4444;
  border-color: #fca5a5;
  font-weight: 600;
}
.tag.role-supervisor {
  background-color: #fef3c7;
  color: #d97706;
  border-color: #fcd34d;
  font-weight: 600;
}
.tag.role-senior-mechanic {
  background-color: #dbeafe;
  color: #2563eb;
  border-color: #93c5fd;
  font-weight: 600;
}
.tag.role-helper {
  background-color: #e2e8f0;
  color: #475569;
  border-color: #cbd5e1;
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
}
.status-badge.active {
  background-color: var(--success-light);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.2);
}
.status-badge.inactive {
  background-color: var(--danger-light);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.2);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

/* Slot Picker Grid */
.slot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.slot-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
}

.slot-item i {
  font-size: 24px;
  margin-bottom: 8px;
}

.slot-item span {
  font-size: 12px;
  font-weight: 600;
}

.slot-item:hover:not(.booked) {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background-color: rgba(13, 110, 253, 0.05);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.slot-item.selected {
  border-color: var(--accent-primary);
  color: #FFFFFF;
  background: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.slot-item.booked {
  border-color: var(--border-color);
  background-color: var(--bg-tertiary);
  color: #CBD5E1;
  cursor: not-allowed;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.toast {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--border-radius-sm);
  padding: 16px 24px;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  transform: translateX(120%);
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  gap: 12px;
}
.toast.show {
  transform: translateX(0);
}

/* RTL Layout Support */
.rtl-layout { direction: rtl; text-align: right; }
.rtl-layout .form-control { text-align: right; }
.rtl-layout .btn i { margin-left: 8px; margin-right: 0; }
.rtl-layout .data-table th, .rtl-layout .data-table td { text-align: right; }
.rtl-layout .nav-actions { flex-direction: row-reverse; }

/* Responsive Foundations */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 1rem;
}

.grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

@media (max-width: 768px) {
  .grid-2-col {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .header-flex {
    flex-direction: column;
    align-items: stretch !important;
  }
  
  .header-flex > div {
    display: flex;
    flex-direction: column;
    width: 100%;
  }
  
  .header-flex .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Responsive Mobile Layouts (Standard Web) */
@media (max-width: 600px) {
  body { font-size: 13px; }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1.1rem; }
  
  .btn {
    padding: 8px 12px;
    font-size: 12px;
  }

  .nav-container { flex-direction: column; gap: 12px; align-items: center; }
  .nav-actions { width: 100%; justify-content: space-between; }
  
  main.main-content { padding: 0 1rem; margin-top: 1rem; }
  .glass-card { padding: 1rem; }
  
  /* Make tables fit without horizontal scrolling */
  .table-responsive {
    overflow-x: visible;
  }
  .data-table th, .data-table td {
    padding: 8px 4px;
    font-size: 11px;
    word-wrap: break-word;
  }
  
  /* Admin Sidebar switches to top row of buttons */
  .admin-layout {
    flex-direction: column;
  }
  .admin-sidebar {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
  }
  .admin-sidebar .tab-btn {
    width: auto;
    flex: 1 1 45%;
    justify-content: center;
  }
  
  /* Touch friendly slot grids */
  .slot-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  .slot-item {
    padding: 12px 4px;
  }
  .slot-item i { font-size: 20px; margin-bottom: 4px; }
  
  /* Modals on Mobile */
  .modal-content {
    margin: 16px;
    padding: 24px;
    max-height: 85vh;
    overflow-y: auto;
  }
}

@media print {
  header.top-navbar, .toast-container, .btn, .status-badge { display: none !important; }
  body { background: #FFF; color: #000; }
  .glass-card { box-shadow: none; border: 1px solid #CCC; padding: 0; background: #FFF; }
  .data-table th, .data-table td { border: 1px solid #CCC; color: #000; }
}