/* ===== CSS VARIABLES ===== */
:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.1);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #6366f1;
  --accent-blue-hover: #4f46e5;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-orange: #f59e0b;
  --accent-purple: #8b5cf6;
  --sidebar-width: 240px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: all 0.25s ease;
}

/* ===== RESET ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  font-size: 16px;
}
body {
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}
a {
  text-decoration: none;
  color: inherit;
}
input,
select,
button,
textarea {
  font-family: inherit;
}
ul {
  list-style: none;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-blue);
  border-radius: 3px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.3px;
}
.btn-primary {
  background: var(--accent-blue);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}
.btn-danger {
  background: var(--accent-red);
  color: white;
}
.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
}
.btn-outline:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.btn-full {
  width: 100%;
}
.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

/* ===== GLASS CARD ===== */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

/* ===== FORM ELEMENTS ===== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group select {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-blue);
  background: rgba(99, 102, 241, 0.1);
}
.form-group input::placeholder {
  color: var(--text-muted);
}
.form-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== MESSAGES ===== */
.error-msg {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.success-msg {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #6ee7b7;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.hidden {
  display: none !important;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 32px;
  font-size: 0.9rem;
}

/* ===== TABLE ===== */
.table-wrap {
  overflow-x: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.data-table thead th {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
  white-space: nowrap;
}
.data-table tbody tr {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: var(--transition);
}
.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}
.data-table tbody td {
  padding: 14px 16px;
  color: var(--text-primary);
  vertical-align: middle;
}
.data-table tbody tr:last-child {
  border-bottom: none;
}

/* ===== BADGES ===== */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-expense {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
}
.badge-income {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
}

/* ===== ACTION BUTTONS ===== */
.btn-delete {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}
.btn-delete:hover {
  background: rgba(239, 68, 68, 0.3);
}

/* ===== AMOUNT COLORS ===== */
.amount-expense {
  color: #fca5a5;
  font-weight: 700;
}
.amount-income {
  color: #6ee7b7;
  font-weight: 700;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.page-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}
.page-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.page-btn.active {
  background: var(--accent-blue);
  color: white;
  border-color: var(--accent-blue);
}
.page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.pagination-info {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 8px;
}

/* ===== FILTERS ===== */
.filters-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.filter-input {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  color: var(--text-primary);
  font-size: 0.875rem;
  flex: 1;
  min-width: 160px;
  transition: var(--transition);
}
.filter-input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
    max-width: 100%;
    padding: 16px;
  }
  .hamburger {
    display: block;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }
}