/* ============================================
   MaisonTrack — Design System
   Mode Jour / Mode Nuit
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ── */
:root {
  /* Colors - Light Mode */
  --bg-primary: #f5f3ff;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-input: #f0edf6;
  --bg-nav: rgba(255, 255, 255, 0.92);

  --text-primary: #1a1033;
  --text-secondary: #6b5f7e;
  --text-tertiary: #9d93ab;
  --text-on-accent: #ffffff;

  --accent-primary: #7c3aed;
  --accent-secondary: #a78bfa;
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #6d28d9 50%, #5b21b6 100%);
  --accent-gradient-soft: linear-gradient(135deg, #a78bfa 0%, #7c3aed 100%);

  --martin-color: #6d28d9;
  --martin-gradient: linear-gradient(135deg, #7c3aed, #6d28d9);
  --yuna-color: #ec4899;
  --yuna-gradient: linear-gradient(135deg, #f472b6, #ec4899);

  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  --border-color: rgba(124, 58, 237, 0.12);
  --border-color-strong: rgba(124, 58, 237, 0.25);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.15);

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --nav-height: 72px;
  --header-height: 56px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Dark Mode ── */
[data-theme="dark"] {
  --bg-primary: #0f0a1e;
  --bg-secondary: #1a1033;
  --bg-card: rgba(30, 20, 55, 0.85);
  --bg-card-hover: rgba(40, 28, 70, 0.95);
  --bg-input: #241a3d;
  --bg-nav: rgba(15, 10, 30, 0.95);

  --text-primary: #f0ecf7;
  --text-secondary: #b0a3c7;
  --text-tertiary: #7a6d90;

  --accent-primary: #a78bfa;
  --accent-secondary: #c4b5fd;
  --accent-gradient: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 50%, #7c3aed 100%);
  --accent-gradient-soft: linear-gradient(135deg, #c4b5fd 0%, #a78bfa 100%);

  --martin-color: #a78bfa;
  --martin-gradient: linear-gradient(135deg, #c4b5fd, #a78bfa);
  --yuna-color: #f472b6;
  --yuna-gradient: linear-gradient(135deg, #f9a8d4, #f472b6);

  --border-color: rgba(167, 139, 250, 0.12);
  --border-color-strong: rgba(167, 139, 250, 0.25);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 25px rgba(167, 139, 250, 0.2);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  transition: background var(--transition-normal), color var(--transition-normal);
  padding-bottom: calc(var(--nav-height) + 16px);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--accent-secondary);
  border-radius: var(--radius-full);
}

/* ── Typography ── */
h1 { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 1.1rem; font-weight: 600; }
h4 { font-size: 0.95rem; font-weight: 600; }

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

/* ── Page Container ── */
.page {
  display: none;
  padding: 16px 16px 24px;
  max-width: 600px;
  margin: 0 auto;
  animation: pageIn 0.35s var(--transition-slow);
}

.page.active {
  display: block;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Header ── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding: 4px 0;
}

.page-header h1 {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-header h1 .emoji {
  font-size: 1.5rem;
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-normal);
}

.card:active {
  transform: scale(0.985);
}

.card-highlight {
  border-color: var(--border-color-strong);
  box-shadow: var(--shadow-glow);
}

.card-gradient {
  background: var(--accent-gradient);
  color: var(--text-on-accent);
  border: none;
}

/* ── Stat Cards ── */
.stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.stat-card:active {
  transform: scale(0.97);
}

.stat-card .stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.stat-card .stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.stat-card.martin .stat-value { color: var(--martin-color); }
.stat-card.yuna .stat-value { color: var(--yuna-color); }

/* ── Balance Bar ── */
.balance-bar-container {
  margin: 16px 0;
}

.balance-bar-labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.8rem;
  font-weight: 600;
}

.balance-bar-labels .martin-label { color: var(--martin-color); }
.balance-bar-labels .yuna-label { color: var(--yuna-color); }

.balance-bar {
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--bg-input);
  overflow: hidden;
  display: flex;
  position: relative;
}

.balance-bar .martin-part {
  background: var(--martin-gradient);
  height: 100%;
  border-radius: var(--radius-full) 0 0 var(--radius-full);
  transition: width var(--transition-slow);
  min-width: 4px;
}

.balance-bar .yuna-part {
  background: var(--yuna-gradient);
  height: 100%;
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
  transition: width var(--transition-slow);
  min-width: 4px;
}

.balance-message {
  text-align: center;
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 16px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
}

.balance-message strong {
  color: var(--text-primary);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
  min-height: 48px;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-on-accent);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  box-shadow: var(--shadow-sm);
}

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

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 10px 16px;
  font-size: 0.85rem;
  min-height: 40px;
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
  font-size: 1.2rem;
}

/* Ripple Effect */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple-anim 0.5s ease-out;
  pointer-events: none;
}

@keyframes ripple-anim {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ── Toggle Buttons (Person Selector) ── */
.toggle-group {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.toggle-btn {
  flex: 1;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.toggle-btn:active {
  transform: scale(0.97);
}

.toggle-btn.active-martin {
  background: var(--martin-gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(109, 40, 217, 0.3);
}

.toggle-btn.active-yuna {
  background: var(--yuna-gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
}

.toggle-btn.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

/* ── Category Grid ── */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.category-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 8px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 72px;
  font-family: inherit;
}

.category-chip:active {
  transform: scale(0.95);
}

.category-chip .cat-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.category-chip .cat-name {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.2;
}

.category-chip.selected {
  border-color: var(--accent-primary);
  background: rgba(124, 58, 237, 0.1);
  box-shadow: 0 0 0 1px var(--accent-primary);
}

[data-theme="dark"] .category-chip.selected {
  background: rgba(167, 139, 250, 0.15);
}

.category-chip.selected .cat-name {
  color: var(--accent-primary);
}

/* ── Form Inputs ── */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-input);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
  min-height: 52px;
}

.form-input:focus {
  border-color: var(--accent-primary);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input-big {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  padding: 20px 16px;
  min-height: 72px;
}

/* ── Expense List ── */
.expense-list {
  list-style: none;
}

.expense-day-header {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 4px 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 6px;
}

.expense-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast);
  position: relative;
}

.expense-item:last-child {
  border-bottom: none;
}

.expense-item:active {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
}

.expense-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  background: var(--bg-input);
}

.expense-info {
  flex: 1;
  min-width: 0;
}

.expense-info .expense-desc {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.expense-info .expense-meta {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.expense-amount {
  font-size: 1.05rem;
  font-weight: 700;
  flex-shrink: 0;
}

.expense-amount.martin { color: var(--martin-color); }
.expense-amount.yuna { color: var(--yuna-color); }

.expense-delete {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: none;
  background: var(--danger);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

/* ── Subscription Cards ── */
.sub-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  transition: all var(--transition-fast);
}

.sub-card:active {
  transform: scale(0.985);
}

.sub-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  background: var(--bg-input);
}

.sub-info {
  flex: 1;
  min-width: 0;
}

.sub-info .sub-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.sub-info .sub-details {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
}

.sub-amount {
  text-align: right;
  flex-shrink: 0;
}

.sub-amount .amount {
  font-size: 1.1rem;
  font-weight: 700;
}

.sub-amount .freq {
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

/* ── Person Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
}

.badge-martin {
  background: rgba(109, 40, 217, 0.12);
  color: var(--martin-color);
}

.badge-yuna {
  background: rgba(236, 72, 153, 0.12);
  color: var(--yuna-color);
}

[data-theme="dark"] .badge-martin {
  background: rgba(167, 139, 250, 0.15);
}

[data-theme="dark"] .badge-yuna {
  background: rgba(244, 114, 182, 0.15);
}

/* ── Month Navigator ── */
.month-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
  padding: 8px 0;
}

.month-nav .month-label {
  font-size: 1rem;
  font-weight: 700;
  min-width: 160px;
  text-align: center;
  text-transform: capitalize;
}

.month-nav button {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.month-nav button:active {
  transform: scale(0.93);
  background: var(--bg-input);
}

/* ── Frequency Toggle ── */
.freq-group {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}

.freq-btn {
  flex: 1;
  padding: 12px 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  min-height: 48px;
}

.freq-btn:active {
  transform: scale(0.97);
}

.freq-btn.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
}

/* ── Bottom Navigation ── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 8px;
  padding-bottom: env(safe-area-inset-bottom, 0);
  z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .bottom-nav {
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
  min-width: 56px;
  position: relative;
}

.nav-item:active {
  transform: scale(0.9);
}

.nav-item .nav-icon {
  font-size: 1.35rem;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.nav-item.active {
  color: var(--accent-primary);
}

.nav-item.active .nav-icon {
  transform: scale(1.1);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 0 0 3px 3px;
}

/* Special Add Button */
.nav-item.nav-add {
  position: relative;
}

.nav-item.nav-add .nav-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.35);
  margin-top: -20px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-item.nav-add:active .nav-icon {
  transform: scale(0.92);
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
}

.nav-item.nav-add.active .nav-icon {
  transform: scale(1.08);
}

.nav-item.nav-add.active::after {
  display: none;
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-tertiary);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: 0.6;
}

.empty-state .empty-text {
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.empty-state .empty-sub {
  font-size: 0.8rem;
}

/* ── Section Header ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.section-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-header .see-all {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.section-header .see-all:active {
  background: rgba(124, 58, 237, 0.08);
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  cursor: pointer;
}

.theme-toggle-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.theme-toggle-label .toggle-icon {
  font-size: 1.3rem;
}

.toggle-switch {
  width: 52px;
  height: 28px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition-fast);
  border: 2px solid var(--border-color);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle-switch.active {
  background: var(--accent-primary);
  border-color: transparent;
}

.toggle-switch.active::after {
  transform: translateX(24px);
}

/* ── Modal / Sheet ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  display: none;
  align-items: flex-end;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-sheet {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 24px 20px;
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  animation: slideUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.modal-handle {
  width: 36px;
  height: 4px;
  background: var(--text-tertiary);
  border-radius: var(--radius-full);
  margin: 0 auto 16px;
  opacity: 0.3;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

/* ── Toast Notification ── */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-120%);
  padding: 14px 24px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }

/* ── Color Picker Grid ── */
.color-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.color-option {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 36px;
}

.color-option:active {
  transform: scale(0.9);
}

.color-option.selected {
  border-color: var(--text-primary);
  box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--text-primary);
}

/* ── Category List (Settings) ── */
.category-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border-color);
}

.category-list-item:last-child {
  border-bottom: none;
}

.category-list-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.category-list-name {
  flex: 1;
  font-weight: 600;
  font-size: 0.92rem;
}

.category-list-delete {
  width: 36px;
  height: 36px;
  border: none;
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.category-list-delete:active {
  transform: scale(0.9);
  background: rgba(239, 68, 68, 0.2);
}

/* ── Confirm Modal ── */
.confirm-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.confirm-actions .btn {
  flex: 1;
}

/* ── Responsive - Tablet ── */
@media (min-width: 600px) {
  .page {
    padding: 24px;
  }

  .stats-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .category-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .bottom-nav {
    padding: 0 24px;
  }
}

/* ── Responsive - Desktop ── */
@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
    padding-left: 240px;
  }

  .bottom-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: auto;
    width: 240px;
    height: 100vh;
    flex-direction: column;
    justify-content: flex-start;
    padding: 24px 16px;
    gap: 4px;
    border-top: none;
    border-right: 1px solid var(--border-color);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.06);
  }

  [data-theme="dark"] .bottom-nav {
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
  }

  .nav-item {
    flex-direction: row;
    justify-content: flex-start;
    gap: 12px;
    padding: 14px 16px;
    width: 100%;
    font-size: 0.85rem;
    border-radius: var(--radius-md);
  }

  .nav-item .nav-icon {
    font-size: 1.2rem;
  }

  .nav-item.active::after {
    top: 50%;
    left: 0;
    right: auto;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    border-radius: 0 3px 3px 0;
  }

  .nav-item.nav-add {
    margin-top: 8px;
    order: 5;
  }

  .nav-item.nav-add .nav-icon {
    width: auto;
    height: auto;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    margin-top: 0;
    font-size: 1.1rem;
    box-shadow: none;
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px 24px;
    font-size: 1.1rem;
    font-weight: 800;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
  }

  .page {
    max-width: 700px;
    padding: 32px;
  }

  .category-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .modal-sheet {
    border-radius: var(--radius-xl);
    margin-bottom: 40px;
  }

  .modal-overlay {
    align-items: center;
  }
}

/* ── Nav Logo (hidden on mobile) ── */
.nav-logo {
  display: none;
}

/* ── Utility ── */
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.gap-8 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.hidden { display: none !important; }
/* ── Login Enhancements ── */
.login-bg {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: radial-gradient(circle at top left, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
              radial-gradient(circle at bottom right, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  background-color: var(--bg-primary);
  transition: background var(--transition-normal);
}

[data-theme="dark"] .login-bg {
  background: radial-gradient(circle at top left, rgba(124, 58, 237, 0.25) 0%, transparent 60%),
              radial-gradient(circle at bottom right, rgba(16, 185, 129, 0.15) 0%, transparent 60%);
  background-color: var(--bg-primary);
}

@keyframes floating {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
  100% { transform: translateY(0px); }
}

.login-logo-container {
  text-align: center;
  margin-bottom: 40px;
  animation: floating 4s ease-in-out infinite;
  z-index: 1;
}

.login-glow {
  text-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
  transition: text-shadow var(--transition-normal);
}

[data-theme="dark"] .login-glow {
  text-shadow: 0 0 30px rgba(124, 58, 237, 0.8), 0 0 10px rgba(124, 58, 237, 0.5);
}

.login-card-wrapper {
  width: 100%;
  max-width: 400px;
  z-index: 1;
  position: relative;
}