/* CSS Design System - Task & Expense Hub (PHP Sans BD) */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', var(--font-family);

  /* Thème Sombre (Par défaut) */
  --bg-main: #0b0f19;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(26, 35, 54, 0.85);
  --bg-input: #131b2e;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-focus: #6366f1;

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

  /* Modificateurs de Couleur */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);

  --secondary: #ec4899;
  --secondary-glow: rgba(236, 72, 153, 0.35);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);

  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);

  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);

  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --border-radius: 16px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Thème Clair (Toggle) */
[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-input: #f1f5f9;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-focus: #6366f1;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  --glass-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(236, 72, 153, 0.1) 0%, transparent 40%);
  background-attachment: fixed;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* --- HEADER & NAVIGATION --- */
header.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.logo-text h1 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(90deg, #fff, var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .logo-text h1 {
  background: linear-gradient(90deg, var(--text-main), #475569);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge-nodb {
  font-size: 0.72rem;
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  border: 1px solid var(--primary-glow);
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* --- TABS --- */
.nav-tabs {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-card);
  padding: 0.4rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background: var(--border-color);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
}
.btn-icon:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* --- STATS SUMMARY BAR --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--glass-shadow);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.15);
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.stat-icon.tasks { background: rgba(99, 102, 241, 0.15); color: var(--primary); }
.stat-icon.income { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.stat-icon.expense { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.stat-icon.balance { background: rgba(245, 158, 11, 0.15); color: var(--warning); }

.stat-info h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-info .value {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 0.2rem;
}

/* --- TAB CONTENT PANELS --- */
.tab-content {
  display: none;
  animation: fadeIn 0.35s ease-out forwards;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- CONTROLS & FILTER BAR --- */
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.search-filter-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  flex: 1;
  max-width: 600px;
}

.input-field, select.input-field, textarea.input-field {
  width: 100%;
  padding: 0.65rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: var(--transition);
}

.input-field:focus {
  outline: none;
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* --- TASKS LIST --- */
.tasks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.task-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.task-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.task-item.priority-haute::before { background-color: var(--danger); }
.task-item.priority-moyenne::before { background-color: var(--warning); }
.task-item.priority-basse::before { background-color: var(--success); }

.task-item:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  box-shadow: var(--glass-shadow);
}

.task-item.completed {
  opacity: 0.65;
}

.task-item.completed .task-title {
  text-decoration: line-through;
}

.task-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.custom-checkbox {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid var(--border-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  margin-top: 2px;
  flex-shrink: 0;
}

.task-item.completed .custom-checkbox {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.task-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
}

.task-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.task-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

.badge {
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: capitalize;
}

.badge-cat { background: rgba(255, 255, 255, 0.08); color: var(--text-muted); }
.badge-priority-haute { background: var(--danger-bg); color: var(--danger); }
.badge-priority-moyenne { background: var(--warning-bg); color: var(--warning); }
.badge-priority-basse { background: var(--success-bg); color: var(--success); }

/* --- EXPENSES LAYOUT --- */
.expense-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .expense-layout {
    grid-template-columns: 1fr;
  }
}

.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  overflow-x: auto;
}

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

.data-table th, .data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  font-family: var(--font-heading);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.amount-income { color: var(--success); font-weight: 700; }
.amount-expense { color: var(--danger); font-weight: 700; }

/* Visual Chart Widget */
.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  backdrop-filter: blur(12px);
}

.chart-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

.bar-chart-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bar-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.bar-track {
  height: 10px;
  background: var(--bg-input);
  border-radius: 5px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 5px;
  transition: width 0.6s ease;
}

/* --- NOTES GRID --- */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.note-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 180px;
}

.note-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--glass-shadow);
}

.note-color-stripe {
  height: 4px;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  border-top-left-radius: var(--border-radius);
  border-top-right-radius: var(--border-radius);
}

.note-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.note-content {
  font-size: 0.9rem;
  color: var(--text-muted);
  white-space: pre-line;
  flex-grow: 1;
  margin-bottom: 1rem;
}

/* --- MODALS --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 1000;
  padding: 1rem;
}

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

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 540px;
  padding: 1.75rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  transform: scale(0.95);
  transition: var(--transition);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* --- TOAST NOTIFICATIONS --- */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 9999;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  padding: 0.85rem 1.25rem;
  border-radius: 10px;
  box-shadow: var(--glass-shadow);
  color: var(--text-main);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideIn 0.3s ease-out forwards;
}

.toast.success { border-left-color: var(--success); }
.toast.danger { border-left-color: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-dim);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  opacity: 0.5;
}