/* ── Variables ── */
:root {
  --bg: #f0f4ff;
  --surface: #ffffff;
  --surface2: #f8faff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text2: #64748b;
  --shadow: 0 2px 16px rgba(99,102,241,0.08);
  --radius: 14px;
  --sidebar-w: 280px;

  --blue: #3b82f6;
  --purple: #8b5cf6;
  --green: #10b981;
  --red: #ef4444;
  --orange: #f59e0b;
  --teal: #14b8a6;
  --pink: #ec4899;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface2: #162032;
  --border: #334155;
  --text: #f1f5f9;
  --text2: #94a3b8;
  --shadow: 0 2px 16px rgba(0,0,0,0.3);
}

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

body {
  font-family: 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: linear-gradient(160deg, #1e1b4b 0%, #312e81 40%, #4c1d95 100%);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.sidebar-logo span { font-size: 1.8rem; }

.sidebar-logo h1 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

/* Stat Cards */
.stat-card {
  border-radius: 12px;
  padding: 14px 16px;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-card p {
  font-size: 0.72rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-card strong { font-size: 1.5rem; font-weight: 700; }

.card-blue   { background: rgba(59,130,246,0.35); border: 1px solid rgba(99,179,255,0.3); }
.card-purple { background: rgba(139,92,246,0.35); border: 1px solid rgba(196,167,255,0.3); }
.card-green  { background: rgba(16,185,129,0.35); border: 1px solid rgba(110,231,183,0.3); }

/* Sidebar sections */
.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.budget-row {
  display: flex;
  gap: 6px;
}

.budget-row input {
  flex: 1;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 0.85rem;
}

.budget-row input::placeholder { color: rgba(255,255,255,0.4); }

#budgetBarWrap {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.budget-bar {
  height: 8px;
  background: rgba(255,255,255,0.15);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 4px;
}

.budget-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--teal));
  border-radius: 99px;
  transition: width 0.5s ease;
  width: 0%;
}

.budget-bar-fill.warning { background: linear-gradient(90deg, var(--orange), #fbbf24); }
.budget-bar-fill.over    { background: linear-gradient(90deg, var(--red), #f97316); }

.budget-warning {
  font-size: 0.75rem;
  color: #fca5a5;
  font-weight: 500;
}

/* Chart in sidebar */
.chart {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chart-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
}

.chart-label {
  width: 80px;
  flex-shrink: 0;
  color: rgba(255,255,255,0.75);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chart-bar-wrap {
  flex: 1;
  background: rgba(255,255,255,0.12);
  border-radius: 99px;
  height: 7px;
  overflow: hidden;
}

.chart-bar {
  height: 100%;
  border-radius: 99px;
  transition: width 0.5s ease;
}

.chart-amount {
  width: 48px;
  text-align: right;
  color: rgba(255,255,255,0.6);
  font-size: 0.72rem;
}

.chart-Food          { background: #f59e0b; }
.chart-Transport     { background: #3b82f6; }
.chart-Shopping      { background: #ec4899; }
.chart-Health        { background: #10b981; }
.chart-Entertainment { background: #8b5cf6; }
.chart-Bills         { background: #ef4444; }
.chart-Other         { background: #94a3b8; }

.theme-btn {
  margin-top: auto;
  padding: 10px 14px;
  border-radius: 99px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  text-align: center;
}

.theme-btn:hover { background: rgba(255,255,255,0.15); }

.logout-btn {
  padding: 10px 14px;
  border-radius: 99px;
  border: 1px solid rgba(255,100,100,0.3);
  background: rgba(255,100,100,0.1);
  color: #fca5a5;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  text-align: center;
}

.logout-btn:hover { background: rgba(255,100,100,0.2); }

.user-email {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  word-break: break-all;
  margin-top: -8px;
}

/* ── Main Content ── */
.main {
  margin-left: var(--sidebar-w);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 100vh;
}

/* ── Card ── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.section-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text2);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* ── Form ── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.form-grid input,
.form-grid select {
  padding: 10px 12px;
  font-size: 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--surface2);
  color: var(--text);
  transition: border 0.2s;
  width: 100%;
}

.form-grid input:focus,
.form-grid select:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--surface);
}

.form-grid .btn-primary { grid-column: span 3; }

/* ── Buttons ── */
.btn {
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }

.btn-dark {
  background: var(--text);
  color: var(--surface);
}

.btn-dark:hover { opacity: 0.85; }

.btn-ghost {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover { background: var(--border); }

/* ── Filters ── */
.filter-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-row input,
.filter-row select {
  padding: 9px 12px;
  font-size: 0.85rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--surface2);
  color: var(--text);
}

.filter-row input:focus,
.filter-row select:focus {
  outline: none;
  border-color: var(--blue);
}

#searchInput { flex: 1; min-width: 160px; }

/* ── Expense List ── */
#expenseList {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#expenseList li {
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 14px 18px;
  border-radius: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: fadeIn 0.2s ease;
  transition: transform 0.15s, box-shadow 0.15s;
}

#expenseList li:hover {
  transform: translateX(4px);
  box-shadow: -3px 0 0 #6366f1, var(--shadow);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.expense-info { display: flex; flex-direction: column; gap: 3px; }

.expense-desc {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.expense-note {
  font-size: 0.78rem;
  color: var(--text2);
  font-style: italic;
}

.expense-meta { font-size: 0.78rem; color: var(--text2); display: flex; align-items: center; gap: 6px; }

.category-badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
}

.cat-Food          { background: #fef3c7; color: #92400e; }
.cat-Transport     { background: #dbeafe; color: #1e40af; }
.cat-Shopping      { background: #fce7f3; color: #9d174d; }
.cat-Health        { background: #d1fae5; color: #065f46; }
.cat-Entertainment { background: #ede9fe; color: #5b21b6; }
.cat-Bills         { background: #fee2e2; color: #991b1b; }
.cat-Other         { background: #f1f5f9; color: #475569; }

.expense-right { display: flex; align-items: center; gap: 10px; }

.expense-amount {
  font-weight: 700;
  font-size: 1rem;
  color: var(--red);
}

.edit-btn, .delete-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 5px 7px;
  border-radius: 6px;
  transition: background 0.15s;
}

.edit-btn:hover   { background: #eff6ff; }
.delete-btn:hover { background: #fef2f2; }

.empty-msg {
  text-align: center;
  color: var(--text2);
  padding: 40px 0;
  font-size: 0.9rem;
}

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  justify-content: center;
  align-items: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--surface);
  padding: 28px;
  border-radius: 16px;
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  animation: fadeIn 0.2s ease;
}

.modal h2 { font-size: 1.1rem; color: var(--text); }

.modal input,
.modal select {
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  background: var(--surface2);
  color: var(--text);
  width: 100%;
}

.modal-actions { display: flex; gap: 8px; margin-top: 4px; }
.modal-actions button { flex: 1; padding: 10px; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #1e293b;
  color: #fff;
  padding: 12px 28px;
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 500;
  z-index: 999;
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
}

.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.success { background: linear-gradient(135deg, var(--green), var(--teal)); }
.toast.error   { background: linear-gradient(135deg, var(--red), #f97316); }

/* ── Mobile ── */
@media (max-width: 768px) {
  body { grid-template-columns: 1fr; }
  .sidebar { position: relative; width: 100%; min-height: auto; flex-direction: row; flex-wrap: wrap; }
  .main { margin-left: 0; padding: 16px; }
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .btn-primary { grid-column: span 2; }
}