/* ═══════════════════════════════════════════════════════════════
   Smart Budget Planner — style.css
   Aesthetic: Luxury Fintech Dark · Glassmorphism · Gold accents
   ═══════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
  /* Base palette */
  --bg-deep:        #080c1a;
  --bg-mid:         #0d1225;
  --bg-surface:     #111827;
  --bg-card:        rgba(17, 24, 39, 0.72);
  --bg-card-hover:  rgba(22, 32, 55, 0.85);

  /* Gold accent system */
  --gold-100:  #fef3c7;
  --gold-300:  #fcd34d;
  --gold-400:  #F5C842;
  --gold-500:  #e8a82a;
  --gold-600:  #E8994A;

  /* Category colors */
  --cat-nourriture:     #34d399;
  --cat-transport:      #60a5fa;
  --cat-loyer:          #f472b6;
  --cat-internet:       #a78bfa;
  --cat-divertissement: #fb923c;
  --cat-autre:          #94a3b8;

  /* Semantic */
  --success:  #34d399;
  --warning:  #fbbf24;
  --danger:   #f87171;
  --info:     #60a5fa;

  /* Text */
  --text-primary:   #f0f4ff;
  --text-secondary: #8b9cc8;
  --text-muted:     #4a5578;

  /* Border */
  --border:       rgba(255,255,255,0.06);
  --border-glow:  rgba(245,200,66,0.25);

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  /* Spacing */
  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  /* Glassmorphism blur */
  --glass-blur:   blur(16px);
  --glass-border: 1px solid rgba(255,255,255,0.07);

  /* Shadow */
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.04) inset;
  --shadow-btn:  0 4px 20px rgba(245,200,66,0.28);
}

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

html {
  font-size: 15px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Screen reader only ── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ══════════════════════════════════════
   AMBIENT BACKGROUND ORBS
   ══════════════════════════════════════ */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 12s ease-in-out infinite alternate;
}
.bg-orb--1 {
  width: 600px; height: 600px;
  top: -200px; left: -150px;
  background: radial-gradient(ellipse, rgba(245,200,66,0.07) 0%, transparent 70%);
  animation-delay: 0s;
}
.bg-orb--2 {
  width: 500px; height: 500px;
  top: 30%; right: -100px;
  background: radial-gradient(ellipse, rgba(96,165,250,0.06) 0%, transparent 70%);
  animation-delay: -4s;
}
.bg-orb--3 {
  width: 400px; height: 400px;
  bottom: -100px; left: 40%;
  background: radial-gradient(ellipse, rgba(167,139,250,0.05) 0%, transparent 70%);
  animation-delay: -8s;
}
@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.08); }
}

/* ══════════════════════════════════════
   HEADER
   ══════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  background: rgba(8, 12, 26, 0.85);
  border-bottom: var(--glass-border);
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: rgba(245,200,66,0.08);
  border: 1px solid rgba(245,200,66,0.2);
  border-radius: 10px;
  flex-shrink: 0;
}
.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.brand-name em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold-400) 0%, var(--gold-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Header meta */
.header-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.currency-badge {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(245,200,66,0.1);
  border: 1px solid rgba(245,200,66,0.22);
  color: var(--gold-400);
}
.header-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ══════════════════════════════════════
   MAIN LAYOUT
   ══════════════════════════════════════ */
.main-layout {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: clamp(1.2rem, 3vw, 2.4rem) clamp(1rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
}

.col-left {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.col-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ══════════════════════════════════════
   CARD BASE
   ══════════════════════════════════════ */
.card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  animation: cardFadeIn 0.5s ease both;
}
.card:hover {
  border-color: rgba(255,255,255,0.1);
}
@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: 6px;
}
.card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.card-title--sm {
  font-size: 0.98rem;
  margin-bottom: 16px;
}

/* ══════════════════════════════════════
   BUDGET SETUP CARD
   ══════════════════════════════════════ */
.card--setup { animation-delay: 0.05s; }

/* Income input */
.input-group {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.input-group:focus-within {
  border-color: rgba(245,200,66,0.4);
  box-shadow: 0 0 0 3px rgba(245,200,66,0.08);
}
.input-prefix {
  padding: 0 14px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--gold-500);
  background: rgba(245,200,66,0.06);
  border-right: 1px solid rgba(255,255,255,0.07);
  height: 46px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  white-space: nowrap;
}
.income-field {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  padding: 0 14px;
  height: 46px;
  width: 100%;
  min-width: 0;
}
.income-field::placeholder {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 400;
  font-family: var(--font-body);
}
/* Remove spinner arrows */
.income-field::-webkit-inner-spin-button,
.income-field::-webkit-outer-spin-button { -webkit-appearance: none; }
.income-field[type=number] { -moz-appearance: textfield; }

/* 50/30/20 Breakdown */
.rule-breakdown {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.rule-item {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.05);
  transition: border-color 0.3s;
}
.rule-item:hover { border-color: rgba(255,255,255,0.1); }

.rule-item__header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.rule-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.rule-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  flex: 1;
}
.rule-pct {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.rule-bar {
  height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
  margin-bottom: 8px;
}
.rule-bar__fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.rule-amount {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  display: block;
}

/* Needs: green */
.rule-item--needs { border-left: 3px solid var(--cat-nourriture); }
.rule-item--needs .rule-dot { background: var(--cat-nourriture); }
.rule-item--needs .rule-pct { color: var(--cat-nourriture); }
.rule-item--needs .rule-bar__fill { background: linear-gradient(90deg, var(--cat-nourriture), #6ee7b7); }
.rule-item--needs .rule-amount { color: var(--cat-nourriture); }

/* Leisure: blue */
.rule-item--leisure { border-left: 3px solid var(--info); }
.rule-item--leisure .rule-dot { background: var(--info); }
.rule-item--leisure .rule-pct { color: var(--info); }
.rule-item--leisure .rule-bar__fill { background: linear-gradient(90deg, var(--info), #93c5fd); }
.rule-item--leisure .rule-amount { color: var(--info); }

/* Savings: gold */
.rule-item--savings { border-left: 3px solid var(--gold-400); }
.rule-item--savings .rule-dot { background: var(--gold-400); }
.rule-item--savings .rule-pct { color: var(--gold-400); }
.rule-item--savings .rule-bar__fill { background: linear-gradient(90deg, var(--gold-500), var(--gold-300)); }
.rule-item--savings .rule-amount { color: var(--gold-400); }

/* ══════════════════════════════════════
   EXPENSE FORM CARD
   ══════════════════════════════════════ */
.card--add-expense { animation-delay: 0.1s; }

.form-row { margin-bottom: 14px; }
.form-row--2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.field-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}
.field-input {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 10px 13px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
  appearance: none;
  -webkit-appearance: none;
}
.field-input:focus {
  border-color: rgba(245,200,66,0.4);
  box-shadow: 0 0 0 3px rgba(245,200,66,0.08);
}
.field-input::placeholder { color: var(--text-muted); }
.field-input option { background: var(--bg-surface); }
.field-input--sm { font-size: 0.8rem; padding: 7px 10px; }
/* Remove number arrows */
.field-input[type=number]::-webkit-inner-spin-button,
.field-input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; }
.field-input[type=number] { -moz-appearance: textfield; }

/* Select wrapper */
.select-wrap { position: relative; }
.select-wrap .field-input { padding-right: 32px; cursor: pointer; }
.select-arrow {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
}

/* Form error */
.form-error {
  font-size: 0.8rem;
  color: var(--danger);
  min-height: 1.2em;
  margin-bottom: 8px;
  padding-left: 2px;
  transition: opacity 0.3s;
}
.form-error:empty { margin-bottom: 0; }

/* Form actions */
.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ══════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.22s ease;
  letter-spacing: 0.01em;
  outline: none;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background 0.2s;
}
.btn:hover::after { background: rgba(255,255,255,0.06); }
.btn:active { transform: scale(0.97); }
.btn:focus-visible { box-shadow: 0 0 0 3px rgba(245,200,66,0.4); }

.btn--primary {
  background: linear-gradient(135deg, var(--gold-400) 0%, var(--gold-600) 100%);
  color: #1a0f00;
  font-weight: 600;
  box-shadow: var(--shadow-btn);
}
.btn--primary:hover {
  box-shadow: 0 6px 28px rgba(245,200,66,0.38);
  transform: translateY(-1px);
}
.btn--ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.08);
}
.btn--ghost:hover { color: var(--text-primary); }
.btn--danger {
  background: rgba(248,113,113,0.15);
  color: var(--danger);
  border: 1px solid rgba(248,113,113,0.3);
}
.btn--danger:hover { background: rgba(248,113,113,0.25); }
.btn--danger-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 0.78rem;
}
.btn--danger-ghost:hover { color: var(--danger); border-color: rgba(248,113,113,0.3); }
.btn--full { width: 100%; justify-content: center; }
.btn--sm { padding: 7px 13px; font-size: 0.8rem; }

/* ══════════════════════════════════════
   STAT CARDS ROW
   ══════════════════════════════════════ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  animation: cardFadeIn 0.5s ease both;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,0,0,0.5); }
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.stat-card--remaining::before { background: linear-gradient(90deg, var(--success), transparent); animation-delay: 0.08s; }
.stat-card--spent::before     { background: linear-gradient(90deg, var(--danger), transparent); animation-delay: 0.12s; }
.stat-card--usage::before     { background: linear-gradient(90deg, var(--warning), transparent); animation-delay: 0.16s; }
.stat-card--savings::before   { background: linear-gradient(90deg, var(--gold-400), transparent); animation-delay: 0.2s; }

.stat-icon {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  flex-shrink: 0;
}
.stat-card--remaining .stat-icon { background: rgba(52,211,153,0.12); color: var(--success); }
.stat-card--spent .stat-icon     { background: rgba(248,113,113,0.12); color: var(--danger); }
.stat-card--usage .stat-icon     { background: rgba(251,191,36,0.12);  color: var(--warning); }
.stat-card--savings .stat-icon   { background: rgba(245,200,66,0.12);  color: var(--gold-400); }

.stat-body { flex: 1; }
.stat-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  transition: color 0.3s;
}
.stat-card--remaining .stat-value { color: var(--success); }
.stat-card--spent .stat-value     { color: var(--danger); }
.stat-card--usage .stat-value     { color: var(--warning); }
.stat-card--savings .stat-value   { color: var(--gold-400); }

/* Usage bar */
.usage-bar {
  height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.07);
  overflow: hidden;
  margin-top: 6px;
}
.usage-bar__fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--warning), #f59e0b);
  width: 0%;
  transition: width 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ══════════════════════════════════════
   CHARTS ROW
   ══════════════════════════════════════ */
.charts-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 20px;
}

.card--chart { animation-delay: 0.18s; }

.chart-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chart-wrap--donut {
  height: 200px;
  margin-bottom: 14px;
}
.chart-wrap--bar { height: 210px; }

.chart-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  pointer-events: none;
  transition: opacity 0.3s;
}
.chart-empty p {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}
.chart-empty.hidden { opacity: 0; }

/* Donut legend */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  justify-content: center;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  color: var(--text-secondary);
}
.legend-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ══════════════════════════════════════
   EXPENSE LIST CARD
   ══════════════════════════════════════ */
.card--expenses { animation-delay: 0.22s; padding: 0; overflow: hidden; }

.expenses-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.expenses-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.expenses-header .card-label { margin-bottom: 4px; }
.expenses-header .card-title--sm { margin-bottom: 0; }

/* Expense list */
.expense-list {
  list-style: none;
  max-height: 380px;
  overflow-y: auto;
  padding: 8px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}
.expense-list::-webkit-scrollbar { width: 5px; }
.expense-list::-webkit-scrollbar-track { background: transparent; }
.expense-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }

/* Empty state */
.expense-empty {
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  color: var(--text-muted);
}
.expense-empty p { font-size: 0.95rem; font-weight: 500; color: var(--text-secondary); }
.expense-empty span { font-size: 0.8rem; max-width: 280px; }

/* Expense item */
.expense-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  transition: background 0.2s;
  animation: slideIn 0.3s ease both;
}
.expense-item:last-child { border-bottom: none; }
.expense-item:hover { background: rgba(255,255,255,0.025); }
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}
.expense-item.deleting {
  animation: slideOut 0.3s ease forwards;
}
@keyframes slideOut {
  from { opacity: 1; transform: translateX(0); max-height: 100px; }
  to   { opacity: 0; transform: translateX(20px); max-height: 0; padding: 0 24px; }
}

/* Category badge */
.cat-badge {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
/* Category-specific styles injected via JS */

.expense-info { flex: 1; min-width: 0; }
.expense-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.expense-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.expense-amount {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--danger);
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.expense-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
.expense-item:hover .expense-actions { opacity: 1; }

.icon-btn {
  width: 30px; height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
}
.icon-btn:focus-visible { outline: 2px solid var(--gold-400); }
.icon-btn--edit { color: var(--text-muted); }
.icon-btn--edit:hover { background: rgba(96,165,250,0.15); color: var(--info); }
.icon-btn--delete { color: var(--text-muted); }
.icon-btn--delete:hover { background: rgba(248,113,113,0.15); color: var(--danger); }

/* ══════════════════════════════════════
   TOAST NOTIFICATION
   ══════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: rgba(22, 32, 55, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 40px;
  padding: 12px 22px;
  font-size: 0.86rem;
  color: var(--text-primary);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
}
.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.toast--success { border-color: rgba(52,211,153,0.4); }
.toast--error   { border-color: rgba(248,113,113,0.4); }
.toast--info    { border-color: rgba(245,200,66,0.3); }

/* ══════════════════════════════════════
   CONFIRMATION MODAL
   ══════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8,12,26,0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}
.modal-overlay[hidden] { display: none !important; }
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.modal {
  background: var(--bg-surface);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  max-width: 380px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  animation: modalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.9) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.modal-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 1180px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .charts-row { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
  .col-left { flex-direction: row; }
  .card--setup,
  .card--add-expense { flex: 1; min-width: 0; }
}

@media (max-width: 640px) {
  .col-left { flex-direction: column; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .form-row--2col { grid-template-columns: 1fr; }
  .brand-name { font-size: 1rem; }
  .header-date { display: none; }
  .expense-actions { opacity: 1; }
}

@media (max-width: 400px) {
  .stats-row { grid-template-columns: 1fr; }
  .expenses-header { flex-direction: column; align-items: flex-start; }
}

/* ── Utility: number animation ── */
@keyframes countUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.stat-value.updating {
  animation: countUp 0.25s ease;
}

/* ── Edit highlight ── */
.expense-item--editing {
  background: rgba(245,200,66,0.05) !important;
  border-left: 3px solid var(--gold-400);
}