/* ━━━ Design Tokens ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
:root {
  --color-primary: #E07A5F;
  --color-primary-light: #F2A68B;
  --color-primary-dark: #C4624A;
  --color-secondary: #81B29A;
  --color-secondary-light: #A8D4BE;
  --color-accent: #F2CC8F;
  --color-bg: #FAF8F5;
  --color-surface: #FFFFFF;
  --color-text: #3D405B;
  --color-text-light: #6B6E8A;
  --color-text-lighter: #9A9CB8;
  --color-border: #E8E4DF;
  --color-danger: #E07A5F;
  --color-success: #81B29A;
  --shadow-sm: 0 1px 3px rgba(61,64,91,0.06);
  --shadow-md: 0 4px 12px rgba(61,64,91,0.08);
  --shadow-lg: 0 8px 30px rgba(61,64,91,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* ━━━ App Container ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.4s ease;
}

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

.container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* ━━━ Typography ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
h1 { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
h2 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.01em; line-height: 1.2; }
h3 { font-size: 1.1rem; font-weight: 600; line-height: 1.3; }

.text-light { color: var(--color-text-light); }
.text-lighter { color: var(--color-text-lighter); }
.text-center { text-align: center; }
.text-small { font-size: 0.875rem; }

/* ━━━ Buttons ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(224,122,95,0.3);
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(224,122,95,0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { background: var(--color-border); color: var(--color-text-lighter); box-shadow: none; cursor: not-allowed; transform: none; }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-light);
  padding: 10px 20px;
}
.btn-ghost:hover { color: var(--color-primary); background: rgba(224,122,95,0.06); }

.btn-sm { padding: 8px 16px; font-size: 0.875rem; }
.btn-block { width: 100%; }

/* ━━━ Welcome Step ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.welcome {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.welcome-inner {
  max-width: 480px;
}

.welcome .logo {
  font-size: 3.5rem;
  margin-bottom: 8px;
}

.welcome h1 {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.welcome .tagline {
  font-size: 1.15rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.5;
}

.welcome .btn {
  margin-bottom: 32px;
}

.how-it-works {
  text-align: left;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 0;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.how-it-works summary {
  padding: 16px 20px;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text-light);
  font-size: 0.95rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.how-it-works summary::before { content: "?"; display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; background: var(--color-accent); color: var(--color-text); font-size: 0.8rem; font-weight: 700; flex-shrink: 0; }
.how-it-works summary::-webkit-details-marker { display: none; }

.how-it-works .steps-list {
  padding: 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.how-step {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.how-step .num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.how-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.5;
  padding-top: 3px;
}

/* ━━━ Step Header ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.step-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 20px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.step-header .container {
  padding: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.step-header .back-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-light);
  padding: 4px;
  line-height: 1;
  transition: color var(--transition);
}
.step-header .back-btn:hover { color: var(--color-primary); }

.step-header h2 { font-size: 1.15rem; flex: 1; }

.progress-dots {
  display: flex;
  gap: 6px;
}

.progress-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background var(--transition);
}

.progress-dots .dot.active { background: var(--color-primary); }
.progress-dots .dot.done { background: var(--color-secondary); }

/* ━━━ Setup Step ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.name-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}

.name-input-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.name-input-group input {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition);
}

.name-input-group input:focus { outline: none; border-color: var(--color-primary); }
.name-input-group input::placeholder { color: var(--color-text-lighter); }

.chore-category {
  margin-bottom: 20px;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

.category-header .emoji { font-size: 1.1rem; }
.category-header h3 { flex: 1; font-size: 0.95rem; color: var(--color-text-light); }

.chore-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
}

.chore-item input[type="text"] {
  flex: 1;
  padding: 8px 10px;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--color-text);
  background: transparent;
  transition: all var(--transition);
}

.chore-item input[type="text"]:hover { background: rgba(0,0,0,0.02); }
.chore-item input[type="text"]:focus { outline: none; border-color: var(--color-primary-light); background: var(--color-surface); }

.chore-item .remove-btn {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-lighter);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.chore-item .remove-btn:hover { background: rgba(224,122,95,0.1); color: var(--color-danger); }

.add-chore-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-lighter);
  font-family: var(--font);
  font-size: 0.9rem;
  cursor: pointer;
  width: 100%;
  transition: all var(--transition);
  margin-top: 4px;
}

.add-chore-btn:hover { border-color: var(--color-primary-light); color: var(--color-primary); background: rgba(224,122,95,0.03); }

.add-kid-chores {
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
  cursor: pointer;
  transition: all var(--transition);
}

.add-kid-chores:hover { border-color: var(--color-primary-light); background: rgba(224,122,95,0.02); }
.add-kid-chores .icon { font-size: 1.5rem; margin-bottom: 6px; }
.add-kid-chores p { font-size: 0.9rem; color: var(--color-text-light); font-weight: 500; }
.add-kid-chores .sub { font-size: 0.8rem; color: var(--color-text-lighter); margin-top: 2px; }

.setup-footer {
  position: sticky;
  bottom: 0;
  background: linear-gradient(to top, var(--color-bg) 60%, transparent);
  padding: 20px 0 8px;
}

/* ━━━ Bidding Step ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.budget-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 20px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.budget-bar .container { padding: 0; }

.budget-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.budget-used {
  font-weight: 700;
  font-size: 1.1rem;
}

.budget-remaining {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.budget-track {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.budget-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease, background 0.3s ease;
}

.budget-fill.complete { background: var(--color-success); }
.budget-fill.over { background: var(--color-danger); }

.budget-hint {
  font-size: 0.8rem;
  color: var(--color-text-lighter);
  margin-top: 6px;
  text-align: center;
}

.bid-category {
  margin-bottom: 8px;
}

.bid-category-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-lighter);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 0 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.bid-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.bid-row.has-points { box-shadow: 0 0 0 1.5px var(--color-primary-light), var(--shadow-sm); }

.bid-row .chore-name {
  flex: 1;
  font-size: 0.95rem;
  font-weight: 500;
  margin-right: 12px;
}

.stepper {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.stepper button {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  font-family: var(--font);
}

.stepper button:hover { background: var(--color-primary-light); color: white; }
.stepper button:active { transform: scale(0.92); }
.stepper button:disabled { color: var(--color-text-lighter); cursor: not-allowed; }
.stepper button:disabled:hover { background: transparent; color: var(--color-text-lighter); }

.stepper .value {
  width: 36px;
  text-align: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text);
  user-select: none;
}

.stepper .value.nonzero { color: var(--color-primary); }

.bidding-actions {
  padding: 16px 0;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.bid-footer {
  position: sticky;
  bottom: 0;
  background: linear-gradient(to top, var(--color-bg) 70%, transparent);
  padding: 20px 0 8px;
}

.lock-message {
  text-align: center;
  font-size: 0.85rem;
  margin-bottom: 10px;
  font-weight: 500;
}

.lock-message.ready { color: var(--color-success); }
.lock-message.not-ready { color: var(--color-text-lighter); }

/* ━━━ Handoff Step ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.handoff {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.handoff-inner { max-width: 400px; }

.handoff .icon {
  font-size: 4rem;
  margin-bottom: 16px;
  animation: handoffPulse 2s ease-in-out infinite;
}

@keyframes handoffPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.handoff h2 { margin-bottom: 12px; }
.handoff p { color: var(--color-text-light); margin-bottom: 32px; font-size: 1.05rem; }

/* ━━━ Results Step ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.results-header {
  text-align: center;
  padding: 32px 20px 16px;
}

.results-header h1 {
  font-size: 2rem;
  margin-bottom: 4px;
}

.results-header .sub {
  color: var(--color-text-light);
  font-size: 1rem;
}

.results-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

@media (max-width: 540px) {
  .results-columns { grid-template-columns: 1fr; }
}

.result-col {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-md);
}

.result-col.person-a { border-top: 3px solid var(--color-primary); }
.result-col.person-b { border-top: 3px solid var(--color-secondary); }

.result-col h3 {
  font-size: 1.1rem;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-col h3 .badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.person-a .badge { background: rgba(224,122,95,0.12); color: var(--color-primary); }
.person-b .badge { background: rgba(129,178,154,0.15); color: #5a9b7d; }

.result-chore {
  padding: 7px 0;
  font-size: 0.9rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  animation: slideIn 0.3s ease both;
}

.result-chore:last-child { border-bottom: none; }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

.shared-section {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-md);
  margin-bottom: 20px;
  border-top: 3px solid var(--color-accent);
}

.shared-section h3 { margin-bottom: 14px; }

.shared-chore {
  margin-bottom: 14px;
}

.shared-chore:last-child { margin-bottom: 0; }

.shared-chore .name {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.split-bar {
  display: flex;
  height: 24px;
  border-radius: var(--radius-full);
  overflow: hidden;
  font-size: 0.75rem;
  font-weight: 600;
}

.split-bar .part-a {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 0.6s ease;
}

.split-bar .part-b {
  background: var(--color-secondary-light);
  color: #4a8068;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 0.6s ease;
}

.burden-section {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
}

.burden-section h3 { margin-bottom: 14px; text-align: center; }

.burden-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.burden-row:last-child { margin-bottom: 0; }

.burden-row .name {
  width: 80px;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.burden-track {
  flex: 1;
  height: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.burden-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 10px;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  min-width: 40px;
}

.burden-fill.a { background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary)); }
.burden-fill.b { background: linear-gradient(90deg, var(--color-secondary-light), var(--color-secondary)); }

.envy-free-badge {
  text-align: center;
  padding: 12px;
  background: rgba(129,178,154,0.1);
  border-radius: var(--radius-sm);
  color: var(--color-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 12px;
}

.results-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  padding-bottom: 40px;
}

/* ━━━ Confetti ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
#confetti {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 100;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  width: 10px;
  height: 10px;
  top: -10px;
  animation: confettiFall linear forwards;
}

@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  80% { opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* ━━━ Toast ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--color-text);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  transition: transform 0.3s ease;
  white-space: nowrap;
}

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

/* ━━━ Responsive ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  .name-inputs { grid-template-columns: 1fr; }
  .welcome .logo { font-size: 2.5rem; }
  .container { padding: 20px 16px; }
}

/* ━━━ Print ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media print {
  body { background: white; }
  .btn, .results-actions, .step-header, #confetti { display: none !important; }
  .result-col, .shared-section, .burden-section { box-shadow: none; border: 1px solid #ddd; }
}