@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,700&family=Inter:wght@400;500;600;700&display=swap');

/* ===== Design tokens ===== */
:root {
  --color-background: #FFFBEB;
  --color-surface: #FFFFFF;
  --color-muted: #F5EDE6;
  --color-border: #E8DDD4;
  --color-border-strong: #C7B29F;
  --color-primary: #9A3412;
  --color-primary-hover: #7C2D12;
  --color-on-primary: #FFFBEB;
  --color-secondary: #C2410C;
  --color-accent: #047857;
  --color-destructive: #B91C1C;
  --color-text: #1C1917;
  --color-text-muted: #57534E;
  --color-text-subtle: #A8A29E;

  --step-1-tint: #FEF3C7;
  --step-2-tint: #FED7AA;
  --step-3-tint: #FDBA74;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Menlo, monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-8: 48px;
  --space-10: 64px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.06);
  --shadow-md: 0 4px 12px rgba(28, 25, 23, 0.08);
  --shadow-lg: 0 12px 32px rgba(28, 25, 23, 0.12);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-base: 220ms;
  --dur-slow: 320ms;

  --container: 640px;
}

/* ===== Reset mínimo ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, p, ul, ol, dl, dt, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
input, button, select, textarea { font: inherit; }
img, svg { display: block; max-width: 100%; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  font: 400 16px/1.55 var(--font-body);
  color: var(--color-text);
  background: var(--color-background);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ===== Tipografia utilitária ===== */
.display { font: 700 32px/1.1 var(--font-display); letter-spacing: -0.02em; }
.h1 { font: 700 24px/1.2 var(--font-display); letter-spacing: -0.01em; }
.h2 { font: 600 20px/1.3 var(--font-body); }
.h3 { font: 600 18px/1.35 var(--font-body); }
.body-muted { color: var(--color-text-muted); }
.body-sm { font-size: 14px; line-height: 1.5; }
.body-sm-muted { font-size: 14px; line-height: 1.5; color: var(--color-text-muted); }
.caption { font: 500 12px/1.4 var(--font-body); }
.num { font-variant-numeric: tabular-nums; font-weight: 600; }

/* ===== Layout ===== */
.page {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) calc(var(--space-8) + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.page__hero { display: flex; flex-direction: column; gap: var(--space-2); }
.page__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

/* ===== Utilities ===== */
.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;
}
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.link-subtle {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== Botões ===== */
.btn {
  min-height: 48px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  font: 600 16px/1 var(--font-body);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.btn--primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn--primary:active { transform: scale(0.97); background: var(--color-primary-hover); }
.btn--secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-border-strong);
}
.btn--secondary:active { transform: scale(0.97); background: var(--color-muted); }
.btn--ghost { background: transparent; color: var(--color-primary); }
.btn--ghost:active { background: var(--color-muted); }
.btn--destructive { background: var(--color-destructive); color: #fff; }
.btn--destructive:active { transform: scale(0.97); }
.btn--lg { min-height: 56px; font-size: 18px; width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: background-color var(--dur-fast);
}
.btn-icon:active { background: var(--color-muted); }
.btn-icon--destructive { color: var(--color-destructive); }
.btn-icon:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Chips e badges ===== */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: var(--color-muted);
  border-radius: var(--radius-pill);
  font: 500 13px/1 var(--font-body);
  color: var(--color-text);
}
.chip--method {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px; height: 24px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font: 600 12px/1 var(--font-body);
}

/* ===== Cards ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.recipe-list { display: flex; flex-direction: column; gap: var(--space-3); }
.recipe-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--dur-fast), border-color var(--dur-fast);
}
.recipe-card:active { transform: scale(0.99); border-color: var(--color-border-strong); }
.recipe-card__media {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.recipe-card__body { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.recipe-card__body h3 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chevron { color: var(--color-text-subtle); font-size: 20px; }

.method-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.method-card__head { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.params-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3) var(--space-4);
}
.params-grid dt { color: var(--color-text-muted); font-size: 13px; margin-bottom: 2px; }
.params-grid dd { font-weight: 500; }
.notes {
  padding: var(--space-3);
  background: var(--color-muted);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ===== Wizard ===== */
.wizard {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.wizard[data-step="1"] { background: linear-gradient(to bottom, var(--step-1-tint) 0%, var(--color-background) 160px); }
.wizard[data-step="2"] { background: linear-gradient(to bottom, var(--step-2-tint) 0%, var(--color-background) 160px); }
.wizard[data-step="3"] { background: linear-gradient(to bottom, var(--step-3-tint) 0%, var(--color-background) 160px); }

.wizard__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  padding-top: calc(var(--space-3) + env(safe-area-inset-top));
}
.wizard__body {
  flex: 1;
  padding: var(--space-4) var(--space-4) calc(var(--space-8) + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.step-indicator { display: flex; gap: var(--space-2); }
.step-dot {
  width: 24px; height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  transition: background-color var(--dur-base);
}
.step-dot--done { background: var(--color-primary); }

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (min-width: 640px) {
  .option-grid { grid-template-columns: repeat(3, 1fr); }
}
.option-card {
  min-height: 96px;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-align: center;
  color: var(--color-text);
  transition: border-color var(--dur-fast), transform var(--dur-fast), background-color var(--dur-fast);
}
.option-card[aria-checked="true"] {
  border-color: var(--color-primary);
  background: var(--color-muted);
}
.option-card:active { transform: scale(0.97); }
.option-card:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}
.option-card__icon { font-size: 28px; line-height: 1; }
.option-card__label { font-weight: 600; font-size: 15px; }

/* ===== Slider ===== */
.slider-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-muted);
  border-radius: var(--radius-lg);
}
.slider-field__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-weight: 500;
  color: var(--color-text);
}
.slider-field__value {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--color-primary);
}
.slider-field__hint {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-muted);
}
.slider {
  width: 100%;
  height: 28px;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  touch-action: pan-x;
  margin: 0;
  padding: 0;
}
.slider:active { cursor: grabbing; }
.slider::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: 4px;
  background: var(--color-border);
}
.slider::-moz-range-track {
  height: 8px;
  border-radius: 4px;
  background: var(--color-border);
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
  margin-top: -10px;
  cursor: grab;
}
.slider::-moz-range-thumb {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
  cursor: grab;
}
.slider:focus-visible::-webkit-slider-thumb {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Modal ===== */
.modal__overlay {
  position: fixed; inset: 0;
  background: rgba(28, 25, 23, 0.5);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  animation: fade var(--dur-slow) var(--ease-out);
}
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-5);
  width: 100%;
  max-height: 85dvh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  animation: slide-up var(--dur-slow) var(--ease-out);
  padding-bottom: calc(var(--space-5) + env(safe-area-inset-bottom));
}
.modal__footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
@media (min-width: 640px) {
  .modal__overlay { align-items: center; }
  .modal {
    max-width: 480px;
    border-radius: var(--radius-xl);
    animation: scale-in var(--dur-slow) var(--ease-out);
  }
  .modal__footer { flex-direction: row-reverse; }
  .modal__footer .btn { flex: 1; width: auto; }
}

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  left: 0; right: 0;
  bottom: var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  pointer-events: none;
  z-index: 200;
  padding-bottom: env(safe-area-inset-bottom);
}
.toast {
  pointer-events: auto;
  background: var(--color-text);
  color: var(--color-background);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  max-width: 92vw;
  font: 500 14px/1.4 var(--font-body);
  animation: toast-in var(--dur-base) var(--ease-out);
}
.toast--success { background: var(--color-accent); }
.toast--error { background: var(--color-destructive); }

/* ===== Empty state ===== */
.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-8) var(--space-4);
}
.empty__icon {
  width: 64px; height: 64px;
  color: var(--color-border-strong);
}
.empty .btn { margin-top: var(--space-3); }

/* ===== Dropzone ===== */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6);
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-muted);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--dur-fast), background-color var(--dur-fast);
}
.dropzone:hover, .dropzone:focus-within {
  border-color: var(--color-primary);
  background: var(--color-background);
}
.import-report { display: block; padding-top: var(--space-3); color: var(--color-text-muted); font-size: 14px; }

/* ===== Animations ===== */
@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slide-up {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
@keyframes scale-in {
  from { transform: scale(0.96); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
@keyframes toast-in {
  from { transform: translateY(8px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== Responsivo ===== */
@media (min-width: 640px) {
  .page { padding: var(--space-8) var(--space-5) var(--space-8); gap: var(--space-8); }
  .params-grid { grid-template-columns: repeat(3, 1fr); }
}