/* =====================================================================
   AOT ERP - Professional Site Engineering UI Stylesheet
   Theme: Industrial Dark Mode (Default) & Light Mode Switchable
   Responsive: Mobile Portrait (Thumb-zone), Landscape & Desktop (Multi-col)
   ===================================================================== */

:root,
[data-theme="dark"],
.dark {
  --navy-primary: #1e3a5f;
  --navy-dark: #0b1523;
  --navy-light: #2563eb;
  --orange-accent: #f97316;
  --orange-hover: #ea580c;
  --orange-glow: rgba(249, 115, 22, 0.35);
  
  /* Dark Mode Palette */
  --bg-main: #0b1120;
  --bg-secondary: #0f172a;
  --card-bg: #151e32;
  --card-hover: #1c273e;
  --card-border: #23334d;
  --border-color: #23334d;
  --border-subtle: #1e293b;
  
  /* Text */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* Form Inputs */
  --input-bg: #090e1a;
  --input-border: #334155;
  --input-focus-border: #f97316;
  
  /* Status Colors */
  --safe-green: #10b981;
  --safe-green-bg: rgba(16, 185, 129, 0.15);
  --safe-green-border: rgba(16, 185, 129, 0.35);
  
  --danger-red: #f87171;
  --danger-red-bg: rgba(239, 68, 68, 0.15);
  --danger-red-border: rgba(239, 68, 68, 0.35);
  
  --warning-amber: #fbbf24;
  --warning-amber-bg: rgba(245, 158, 11, 0.15);
  --warning-amber-border: rgba(245, 158, 11, 0.35);

  --info-blue: #38bdf8;
  --info-blue-bg: rgba(56, 189, 248, 0.15);
  --info-blue-border: rgba(56, 189, 248, 0.35);
  
  --shadow-card: 0 4px 16px -2px rgba(0, 0, 0, 0.45);
  --shadow-header: 0 2px 10px rgba(0, 0, 0, 0.5);
  --modal-backdrop: rgba(3, 7, 18, 0.82);
}

[data-theme="light"],
.light {
  --navy-primary: #0f3b6c;
  --navy-dark: #092544;
  --navy-light: #164e8a;
  --orange-accent: #e67e22;
  --orange-hover: #d35400;
  --orange-glow: rgba(230, 126, 34, 0.3);
  
  /* Light Mode Palette */
  --bg-main: #f1f5f9;
  --bg-secondary: #e2e8f0;
  --card-bg: #ffffff;
  --card-hover: #f8fafc;
  --card-border: #e2e8f0;
  --border-color: #e2e8f0;
  --border-subtle: #f1f5f9;
  
  /* Text */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  
  /* Form Inputs */
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --input-focus-border: #e67e22;
  
  --safe-green: #059669;
  --safe-green-bg: #d1fae5;
  --safe-green-border: #a7f3d0;
  
  --danger-red: #dc2626;
  --danger-red-bg: #fee2e2;
  --danger-red-border: #fecaca;
  
  --warning-amber: #d97706;
  --warning-amber-bg: #fef3c7;
  --warning-amber-border: #fde68a;

  --info-blue: #0284c7;
  --info-blue-bg: #e0f2fe;
  --info-blue-border: #bae6fd;
  
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-header: 0 2px 8px rgba(0, 0, 0, 0.12);
  --modal-backdrop: rgba(15, 23, 42, 0.65);
}

/* =====================================================================
   Base Elements
   ===================================================================== */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  -webkit-tap-highlight-color: transparent;
  min-height: 100vh;
  transition: background-color 0.25s ease, color 0.25s ease;
  margin: 0;
  padding: 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--orange-accent);
}

/* =====================================================================
   Header Component
   ===================================================================== */
.site-header {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-primary) 100%);
  color: #ffffff;
  border-bottom: 2px solid var(--orange-accent);
  box-shadow: var(--shadow-header);
}

.nav-tab-desktop {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  font-size: 13px;
  font-weight: 600;
  color: #94a3b8;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}
.nav-tab-desktop:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
}
.nav-tab-desktop.active {
  color: #ffffff;
  background-color: var(--orange-accent);
  box-shadow: 0 2px 8px var(--orange-glow);
}
.nav-tab-desktop i {
  margin-right: 6px;
  font-size: 14px;
}

/* =====================================================================
   Cards & Surfaces
   ===================================================================== */
.site-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-card);
  transition: transform 0.15s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Prevent double-spacing and ensure perfect row height alignment in CSS grids */
.grid > .site-card {
  margin-bottom: 0;
  height: 100%;
}

.site-card:hover {
  border-color: rgba(249, 115, 22, 0.4);
}

.interactive-card {
  cursor: pointer;
}
.interactive-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -2px rgba(0, 0, 0, 0.4);
}

/* Sub-card/inner box */
.inner-box {
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 12px;
}

/* =====================================================================
   Status Badges (WCAG Compliant Contrast)
   ===================================================================== */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  border-width: 1px;
  border-style: solid;
}

.badge-draft {
  background-color: rgba(148, 163, 184, 0.15);
  color: #cbd5e1;
  border-color: rgba(148, 163, 184, 0.35);
}
.badge-pending {
  background-color: var(--warning-amber-bg);
  color: var(--warning-amber);
  border-color: var(--warning-amber-border);
}
.badge-approved {
  background-color: var(--safe-green-bg);
  color: #34d399;
  border-color: var(--safe-green-border);
}
.badge-active {
  background-color: var(--info-blue-bg);
  color: var(--info-blue);
  border-color: var(--info-blue-border);
}
.badge-rejected {
  background-color: var(--danger-red-bg);
  color: var(--danger-red);
  border-color: var(--danger-red-border);
}

/* =====================================================================
   Form Controls Dark Styling
   ===================================================================== */
.form-input,
.form-select,
.form-textarea {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-main);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--orange-accent);
  box-shadow: 0 0 0 2px var(--orange-glow);
}

.form-label {
  display: block;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* =====================================================================
   Buttons
   ===================================================================== */
.btn-primary {
  background: linear-gradient(135deg, var(--orange-accent) 0%, var(--orange-hover) 100%);
  color: #ffffff;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px var(--orange-glow);
  transition: all 0.15s ease;
  font-size: 12.5px;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.5);
}
.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  font-size: 12.5px;
}
.btn-secondary:hover {
  background-color: var(--card-border);
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  font-weight: 700;
  padding: 7px 13px;
  border-radius: 7px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  transition: all 0.15s ease;
}
.btn-success:hover {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

/* =====================================================================
   Mobile Thumb-Zone Bottom Navigation
   ===================================================================== */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 62px;
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.35);
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: 100%;
  color: var(--text-muted);
  font-size: 10.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
}

.nav-item.active {
  color: var(--orange-accent);
  font-weight: 800;
}

.nav-item i {
  font-size: 18px;
  margin-bottom: 3px;
}

.nav-item.active i {
  transform: translateY(-2px);
  color: var(--orange-accent);
}

/* Nút Tròn Hành Động Nhanh (FAB Center) */
.fab-center {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange-accent) 0%, var(--orange-hover) 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--orange-glow);
  transform: translateY(-16px);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 3px solid var(--card-bg);
}

.fab-center:active {
  transform: translateY(-12px) scale(0.95);
}

/* =====================================================================
   Modal Windows (Dark Mode Optimized)
   ===================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--modal-backdrop);
  backdrop-filter: blur(6px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-sheet {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 640px;
  max-height: 88vh;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  transform: scale(0.96);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal-sheet {
  transform: scale(1);
}

.modal-header {
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-primary) 100%);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 18px 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 12px 20px;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* Tem Chữ Ký Điện Tử */
.digital-stamp {
  border: 2px dashed var(--orange-accent);
  background-color: var(--input-bg);
  border-radius: 8px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  color: var(--text-main);
}

/* =====================================================================
   RESPONSIVE MODES: Desktop & Landscape Enhancements
   ===================================================================== */

/* DESKTOP MODE (min-width: 1024px) */
@media (min-width: 1024px) {
  body {
    padding-bottom: 24px; /* No bottom nav on desktop */
  }

  .bottom-nav {
    display: none !important;
  }

  .desktop-nav-container {
    display: flex !important;
  }

  .site-card {
    padding: 18px 20px;
  }

  .modal-sheet {
    max-width: 720px;
  }
}

/* LANDSCAPE MODE (orientation: landscape) & Height constrained (< 600px) */
@media (orientation: landscape) and (max-height: 600px) {
  body {
    padding-bottom: 12px;
  }

  .bottom-nav {
    display: none !important;
  }

  .site-header {
    padding-top: 4px;
    padding-bottom: 4px;
  }

  .site-header .header-inner {
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  .desktop-nav-container {
    display: flex !important;
  }

  .modal-sheet {
    max-height: 94vh;
  }

  .modal-body {
    padding: 12px 16px;
  }

  .modal-header,
  .modal-footer {
    padding: 8px 16px;
  }
}