/* ==========================================================
   VelocityOps - Modern Design System (Hostinger/PHP Ready)
   Brand: VelocityTechnosoft Internal Intelligence Platform
   ========================================================== */

:root {
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Color Palette - Dark Obsidian & Vibrant Cyber/Royal Accents */
  --bg-body: #0b0f17;
  --bg-surface: #111827;
  --bg-surface-elevated: #1a2234;
  --bg-surface-hover: #222d42;
  --bg-glass: rgba(17, 24, 39, 0.75);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #6366f1;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  --primary-subtle: rgba(99, 102, 241, 0.12);

  --accent-cyan: #06b6d4;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  /* Status Colors */
  --status-not-started: #6b7280;
  --status-in-progress: #3b82f6;
  --status-on-hold: #f59e0b;
  --status-hold-payment: #ef4444;
  --status-completed: #10b981;
  --status-cancelled: #4b5563;

  /* Layout */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 72px;
  --header-height: 64px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px 0 rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: #e2e8f0;
  --border-focus: #4f46e5;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08);
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--primary-hover);
}

/* App Layout Structure */
.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

.page-body {
  padding: 1.75rem 1.5rem;
  flex: 1;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

/* Sidebar Elements */
.sidebar-brand {
  height: var(--header-height);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}
.brand-logo {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: 0 0 12px var(--primary-glow);
}
.brand-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}
.brand-badge {
  font-size: 0.65rem;
  background: var(--primary-subtle);
  color: var(--primary);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  margin-left: auto;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.nav-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  padding: 0.75rem 0.75rem 0.35rem 0.75rem;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.75rem;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.92rem;
  transition: all 0.15s ease;
}
.nav-link svg, .nav-link i {
  font-size: 1.15rem;
  width: 1.25rem;
  text-align: center;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.nav-link:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
}
.nav-link:hover svg {
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary-subtle);
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active svg {
  color: var(--primary);
}
.nav-badge {
  margin-left: auto;
  font-size: 0.75rem;
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface-hover);
  color: var(--text-muted);
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(0,0,0,0.15);
}
.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-cyan), var(--primary));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.user-info {
  flex: 1;
  min-width: 0;
}
.user-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-role-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Cards & Surfaces */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card-elevated {
  background: var(--bg-surface-elevated);
}
.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 255, 255, 0.15);
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 1.25rem;
}
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
}

/* Stat Cards */
.stat-card {
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 90px;
  height: 90px;
  background: radial-gradient(circle at top right, var(--primary-subtle), transparent 70%);
  pointer-events: none;
}
.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.stat-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}
.stat-footer {
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: white;
  box-shadow: 0 2px 8px var(--primary-glow);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 14px var(--primary-glow);
  color: white;
}
.btn-secondary {
  background: var(--bg-surface-elevated);
  border-color: var(--border-color);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(255,255,255,0.18);
  color: var(--text-main);
}
.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-muted);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-subtle);
}
.btn-danger {
  background: var(--accent-rose);
  color: white;
}
.btn-danger:hover {
  background: #e11d48;
  color: white;
}
.btn-success {
  background: var(--accent-emerald);
  color: white;
}
.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}
.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}
.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.74rem;
  font-weight: 600;
  line-height: 1;
}
.badge-primary { background: rgba(99, 102, 241, 0.15); color: #818cf8; border: 1px solid rgba(99, 102, 241, 0.3); }
.badge-secondary { background: rgba(107, 114, 128, 0.15); color: #9ca3af; border: 1px solid rgba(107, 114, 128, 0.3); }
.badge-success { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-info { background: rgba(6, 182, 212, 0.15); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-dark { background: rgba(15, 23, 42, 0.6); color: #cbd5e1; border: 1px solid rgba(255, 255, 255, 0.1); }

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
}
.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}
.table th {
  padding: 0.85rem 1rem;
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}
.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}
.table tr:last-child td {
  border-bottom: none;
}
.table tbody tr {
  transition: background-color 0.15s ease;
}
.table tbody tr:hover {
  background-color: var(--bg-surface-hover);
}

/* Forms */
.form-group {
  margin-bottom: 1.15rem;
}
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}
.form-control, .form-select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
}
textarea.form-control {
  min-height: 80px;
  resize: vertical;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 1.25rem;
}
.filter-item {
  flex: 1;
  min-width: 180px;
}

/* Progress Bar */
.progress {
  height: 8px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
}
.progress-bar {
  height: 100%;
  background: var(--primary);
  transition: width 0.3s ease;
}
.progress-bar-warning { background: var(--accent-amber); }
.progress-bar-danger { background: var(--accent-rose); }
.progress-bar-success { background: var(--accent-emerald); }

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.modal-backdrop.show {
  display: flex;
  opacity: 1;
}
.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}
.modal-backdrop.show .modal-dialog {
  transform: scale(1);
}
.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-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}
.modal-body {
  padding: 1.5rem;
}
.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--bg-surface-elevated);
}

/* Alert / Flash */
.alert {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  border: 1px solid transparent;
}
.alert-success { background: rgba(16, 185, 129, 0.12); color: #34d399; border-color: rgba(16, 185, 129, 0.25); }
.alert-danger { background: rgba(239, 68, 68, 0.12); color: #f87171; border-color: rgba(239, 68, 68, 0.25); }
.alert-info { background: rgba(6, 182, 212, 0.12); color: #22d3ee; border-color: rgba(6, 182, 212, 0.25); }
.alert-warning { background: rgba(245, 158, 11, 0.12); color: #fbbf24; border-color: rgba(245, 158, 11, 0.25); }

/* Quick Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

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

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-sm { font-size: 0.82rem; }
.text-xs { font-size: 0.74rem; }
.text-lg { font-size: 1.15rem; }
.text-xl { font-size: 1.35rem; }
.text-2xl { font-size: 1.65rem; }

.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.text-light { color: var(--text-main); }
.text-primary { color: var(--primary); }
.text-success { color: var(--accent-emerald); }
.text-warning { color: var(--accent-amber); }
.text-danger { color: var(--accent-rose); }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.w-full { width: 100%; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-4xl { max-width: 56rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.min-h-screen { min-height: 100vh; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* Mobile Hamburger & Responsive */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .mobile-toggle {
    display: block;
  }
  .page-body {
    padding: 1rem;
  }
}