/* ══════════════════════════════════════════════════════════
   Penny — Personal Budget Tracker
   ══════════════════════════════════════════════════════════ */

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

:root {
  /* Light theme */
  --bg:          #f0f2f8;
  --surface:     #ffffff;
  --surface2:    #f7f8fc;
  --border:      #e4e7f0;
  --text:        #1a1d2e;
  --text-muted:  #6b7280;
  --text-faint:  #9ca3af;
  --accent:      #6366f1;
  --accent-soft: #ede9fe;
  --green:       #10b981;
  --green-soft:  #d1fae5;
  --red:         #ef4444;
  --red-soft:    #fee2e2;
  --yellow:      #f59e0b;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:   0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --radius:      14px;
  --radius-sm:   8px;
  --header-h:    60px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body.dark {
  --bg:          #0f1117;
  --surface:     #1a1d2e;
  --surface2:    #21253a;
  --border:      #2d3350;
  --text:        #e8eaf6;
  --text-muted:  #8b93b8;
  --text-faint:  #4a5176;
  --accent:      #818cf8;
  --accent-soft: #1e1b4b;
  --green:       #34d399;
  --green-soft:  #064e3b;
  --red:         #f87171;
  --red-soft:    #450a0a;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.3);
  --shadow-md:   0 4px 12px rgba(0,0,0,.4);
}

html { font-size: 15px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}

/* ── Typography ── */
h1 { font-size: 1.5rem; font-weight: 700; }
h2 { font-size: 1rem; font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 700; }
h4 { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); }

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: background 0.2s, border-color 0.2s;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.header-center {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.month-label {
  font-size: 0.95rem;
  font-weight: 600;
  min-width: 130px;
  text-align: center;
  color: var(--text);
}

.month-nav {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
  line-height: 1;
}
.month-nav:hover { background: var(--surface2); color: var(--text); }
.month-nav:disabled { opacity: 0.3; cursor: default; }
.month-nav:disabled:hover { background: none; color: var(--text-muted); }

.header-right {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.icon-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.4rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.icon-btn:hover { background: var(--surface2); color: var(--text); border-color: var(--border); }

/* ── Main Layout ── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}

/* ── Summary Cards ── */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.summary-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.accent-card {
  background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
  border-color: transparent;
  color: white;
}
.accent-card .card-label { color: rgba(255,255,255,0.8); }
.accent-card .card-sub   { color: rgba(255,255,255,0.7); }

.card-label {
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
}
.card-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.card-value.small { font-size: 1.1rem; }
.card-value.green { color: var(--green); }
.card-value.red   { color: var(--red); }
.card-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── Main Grid ── */
.main-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.left-col, .right-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── Section Headers ── */
.section-title {
  color: var(--text);
  margin-bottom: 0.85rem;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}
.section-header .section-title { margin-bottom: 0; }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 0.85rem; }
.form-group:last-child { margin-bottom: 0; }
.form-group label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); }
.optional { font-weight: 400; color: var(--text-faint); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

input[type="text"],
input[type="number"],
input[type="date"],
select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
  appearance: none;
}
input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.amount-input-wrap {
  position: relative;
}
.currency-symbol {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}
.amount-input-wrap input { padding-left: 1.6rem; }

/* ── Category Grid ── */
.category-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.cat-chip {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1.5px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.cat-chip:hover { border-color: var(--accent); color: var(--accent); }
.cat-chip.selected {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

/* ── Buttons ── */
.btn-primary {
  width: 100%;
  padding: 0.7rem 1.2rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  margin-top: 0.5rem;
}
.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: var(--font);
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-ghost:hover { background: var(--surface2); color: var(--text); border-color: var(--accent); }

.btn-danger {
  background: none;
  border: 1px solid var(--red);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font);
  color: var(--red);
  cursor: pointer;
  transition: background 0.15s;
}
.btn-danger:hover { background: var(--red-soft); }

/* ── Charts ── */
.chart-card { position: relative; }
.chart-wrap {
  position: relative;
  max-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bar-wrap { max-height: 200px; }
.chart-empty {
  position: absolute;
  color: var(--text-faint);
  font-size: 0.85rem;
  pointer-events: none;
}

/* ── Budget Bars ── */
.budget-bars { display: flex; flex-direction: column; gap: 0.85rem; }
.budget-bar-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.3rem;
}
.budget-bar-name { font-size: 0.85rem; font-weight: 500; }
.budget-bar-amt { font-size: 0.78rem; color: var(--text-muted); }
.budget-bar-track {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.budget-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* ── Savings Goals ── */
.goals-list { display: flex; flex-direction: column; gap: 0.85rem; }
.goal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.3rem;
}
.goal-name-row { display: flex; align-items: center; gap: 0.5rem; }
.goal-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.goal-name { font-size: 0.85rem; font-weight: 500; }
.goal-pct { font-size: 0.78rem; font-weight: 700; }
.goal-amounts { font-size: 0.78rem; color: var(--text-muted); }
.goal-track {
  height: 8px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 0.35rem 0;
}
.goal-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.4s ease;
}
.goal-actions { display: flex; gap: 0.3rem; }
.goal-action-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  font-size: 0.8rem;
  padding: 2px 4px;
  border-radius: 4px;
  font-family: var(--font);
  transition: color 0.15s;
}
.goal-action-btn:hover { color: var(--text); }
.goal-deposit-btn {
  font-weight: 800;
  font-size: 1rem;
  color: var(--accent) !important;
  line-height: 1;
}
.goal-deposit-row {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px dashed var(--border);
}
.goal-deposit-row .deposit-input { flex: 1; font-size: 0.85rem; }
.btn-dep-save {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.15s;
}
.btn-dep-save:hover { opacity: 0.85; }
.btn-dep-cancel {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  transition: background 0.15s;
}
.btn-dep-cancel:hover { background: var(--surface2); }

/* ── Transactions ── */
.transactions-card { }
.tx-filters {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.tx-filters input { width: 150px; }
.tx-filters select { width: 160px; }

.tx-list { display: flex; flex-direction: column; gap: 0; margin-top: 0.5rem; }
.tx-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}
.tx-item:last-child { border-bottom: none; }
.tx-item:hover { background: var(--surface2); margin: 0 -1.25rem; padding: 0.7rem 1.25rem; border-radius: 0; }
.tx-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.tx-info { flex: 1; min-width: 0; }
.tx-note { font-size: 0.88rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tx-meta { font-size: 0.75rem; color: var(--text-muted); margin-top: 1px; }
.tx-amount { font-size: 0.95rem; font-weight: 700; color: var(--red); flex-shrink: 0; }
.tx-edit,
.tx-delete {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
  padding: 4px;
  border-radius: 4px;
  line-height: 1;
  font-size: 0.9rem;
}
.tx-item:hover .tx-edit,
.tx-item:hover .tx-delete { opacity: 1; }
.tx-edit:hover  { color: var(--accent); }
.tx-delete:hover { color: var(--red); }

.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-faint);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.empty-state p { font-size: 0.88rem; }

/* ── Modals ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  backdrop-filter: blur(2px);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  transform: scale(0.95);
  transition: transform 0.2s;
}
.modal-overlay.open .modal { transform: scale(1); }
.modal.modal-sm { max-width: 380px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color 0.15s;
}
.modal-close:hover { color: var(--text); }

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}
.modal-hint { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1rem; }

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-footer .btn-primary { margin-top: 0; }

.budget-inputs { display: flex; flex-direction: column; gap: 0.75rem; }
.budget-input-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.budget-input-label { flex: 1; font-size: 0.88rem; font-weight: 500; display: flex; align-items: center; gap: 0.4rem; }
.budget-input-row input { width: 110px; flex-shrink: 0; }

.danger-zone {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ── Category Manager ── */
.category-manager { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.5rem; }
.category-manage-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--surface2);
}
.category-manage-name { font-size: 0.85rem; display: flex; align-items: center; gap: 0.4rem; }
.category-delete-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-faint);
  font-size: 1rem;
  line-height: 1;
  transition: color 0.15s;
}
.category-delete-btn:hover { color: var(--red); }
.add-category-row { display: flex; gap: 0.5rem; }
.add-category-row input { flex: 1; }

/* ── Color Picker ── */
.color-picker { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2.5px solid transparent;
  cursor: pointer;
  transition: transform 0.1s, border-color 0.1s;
}
.color-swatch:hover { transform: scale(1.15); }
.color-swatch.selected { border-color: var(--text); transform: scale(1.1); }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text);
  color: var(--surface);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 1000;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .main-grid { grid-template-columns: 1fr; }
  .summary-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  main { padding: 1rem; gap: 1rem; }
  header { padding: 0 1rem; }
  .header-center .month-label { min-width: 100px; }
  .summary-cards { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .card-value { font-size: 1.35rem; }
  .tx-filters { flex-wrap: wrap; }
  .tx-filters input, .tx-filters select { width: 100%; }
  .logo span { display: none; }
}

@media (max-width: 400px) {
  .summary-cards { grid-template-columns: 1fr; }
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.tx-item { animation: fadeIn 0.2s ease; }
.goal-item { animation: fadeIn 0.2s ease; }