/**
 * REITS H5 UI Kit · iOS-aligned foundation
 * ------------------------------------------------------------
 * Structural language follows Apple HIG (type scale, 44pt touch,
 * continuous radii, hairline separators, grouped surfaces).
 * Product chrome (Order yellow / Matrix X blue) is themed via
 * data-reits-product — never fork field geometry per app.
 *
 * Consumers: @import this from matrix-ui.css (Order) or link
 * directly from other H5 surfaces during migration knives.
 */

:root {
  /* ── Type (iOS Dynamic Type–inspired, CSS px ≈ pt @1x) ── */
  --reits-font-family: "SF Pro Text", "PingFang SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  --reits-font-family-display: "SF Pro Display", "PingFang SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;

  --reits-text-large-title: 34px;
  --reits-text-title1: 28px;
  --reits-text-title2: 22px;
  --reits-text-title3: 20px;
  --reits-text-headline: 17px;
  --reits-text-body: 17px;
  --reits-text-callout: 16px;
  --reits-text-subhead: 15px;
  --reits-text-footnote: 13px;
  --reits-text-caption1: 12px;
  --reits-text-caption2: 11px;

  --reits-leading-tight: 1.2;
  --reits-leading-body: 1.35;
  --reits-leading-relaxed: 1.45;

  --reits-weight-regular: 400;
  --reits-weight-medium: 500;
  --reits-weight-semibold: 600;
  --reits-weight-bold: 700;

  /* ── Space (4pt grid, HIG-friendly) ── */
  --reits-space-1: 4px;
  --reits-space-2: 8px;
  --reits-space-3: 12px;
  --reits-space-4: 16px;
  --reits-space-5: 20px;
  --reits-space-6: 24px;
  --reits-space-8: 32px;
  --reits-space-10: 40px;
  --reits-space-12: 48px;

  /* Semantic spacing — prefer these over raw numbers in page CSS */
  --reits-space-page-x: var(--reits-space-4);      /* 16 · page horizontal inset */
  --reits-space-page-y: var(--reits-space-5);      /* 20 · page top/bottom */
  --reits-space-section: var(--reits-space-6);     /* 24 · between sections */
  --reits-space-stack: var(--reits-space-3);       /* 12 · vertical stack in a card */
  --reits-space-inline: var(--reits-space-2);      /* 8 · chips / button groups */
  --reits-space-field-gap: var(--reits-space-3);   /* 12 · between form fields */
  --reits-space-label-gap: var(--reits-space-1);   /* 4 · label → control */
  --reits-space-card: var(--reits-space-4);        /* 16 · card inner padding */
  --reits-space-list-row: var(--reits-space-3);    /* 12 · list row padding-y */
  --reits-space-nav: var(--reits-space-2);         /* 8 · sidebar/nav item gap */

  /* ── Geometry ── */
  --reits-radius-xs: 6px;
  --reits-radius-sm: 8px;
  --reits-radius-md: 10px; /* iOS continuous field */
  --reits-radius-lg: 14px;
  --reits-radius-xl: 20px;
  --reits-radius-pill: 999px;
  --reits-hairline: 0.5px;

  --reits-touch: 44px;
  --reits-field-h: 44px;
  --reits-control-h: 44px;

  /* ── Semantic colors (defaults = Order light; override per product) ── */
  --reits-label: #1c1c1e;
  --reits-secondary-label: #3a3a3c;
  --reits-tertiary-label: #8e8e93;
  --reits-quaternary-label: #c7c7cc;
  --reits-separator: rgba(60, 60, 67, 0.18);
  --reits-opaque-separator: #c6c6c8;
  --reits-bg: #f2f2f7; /* systemGroupedBackground */
  --reits-surface: #ffffff;
  --reits-surface-secondary: #f2f2f7;
  --reits-fill: rgba(120, 120, 128, 0.12);
  --reits-fill-secondary: rgba(120, 120, 128, 0.08);
  --reits-fill-tertiary: rgba(120, 120, 128, 0.16);

  --reits-tint: #ffc300; /* Order brand; Matrix X → #176BFF */
  --reits-tint-press: #e6b000;
  --reits-tint-ink: #1c1c1e;
  --reits-danger: #ff3b30;
  --reits-success: #34c759;
  --reits-warning: #ff9f0a;

  /* Bridge to existing Matrix Order aliases */
  --mx-brand: var(--reits-tint);
  --mx-brand-press: var(--reits-tint-press);
  --mx-brand-ink: var(--reits-tint-ink);
  --mx-bg: var(--reits-bg);
  --mx-surface: var(--reits-surface);
  --mx-border: var(--reits-opaque-separator);
  --mx-text: var(--reits-label);
  --mx-text-2: var(--reits-secondary-label);
  --mx-text-3: var(--reits-tertiary-label);
  --mx-radius-sm: var(--reits-radius-sm);
  --mx-radius-md: var(--reits-radius-md);
  --mx-radius-lg: var(--reits-radius-lg);
  --mx-radius-pill: var(--reits-radius-pill);
}

[data-reits-product="matrix-x"] {
  --reits-tint: #176bff;
  --reits-tint-press: #0f57d9;
  --reits-tint-ink: #ffffff;
}

[data-reits-product="order"],
[data-theme="sakura-pink"],
body {
  /* Order remains default tint */
}

/* ── Base ── */
html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--reits-font-family);
  font-size: var(--reits-text-body);
  font-weight: var(--reits-weight-regular);
  line-height: var(--reits-leading-body);
  color: var(--reits-label);
  background: var(--reits-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Type utilities ── */
.reits-large-title { font-family: var(--reits-font-family-display); font-size: var(--reits-text-large-title); font-weight: var(--reits-weight-bold); line-height: var(--reits-leading-tight); letter-spacing: 0.01em; }
.reits-title1 { font-family: var(--reits-font-family-display); font-size: var(--reits-text-title1); font-weight: var(--reits-weight-bold); line-height: var(--reits-leading-tight); }
.reits-title2 { font-family: var(--reits-font-family-display); font-size: var(--reits-text-title2); font-weight: var(--reits-weight-bold); line-height: var(--reits-leading-tight); }
.reits-title3 { font-size: var(--reits-text-title3); font-weight: var(--reits-weight-semibold); line-height: var(--reits-leading-tight); }
.reits-headline { font-size: var(--reits-text-headline); font-weight: var(--reits-weight-semibold); line-height: var(--reits-leading-body); }
.reits-body { font-size: var(--reits-text-body); font-weight: var(--reits-weight-regular); line-height: var(--reits-leading-body); }
.reits-callout { font-size: var(--reits-text-callout); line-height: var(--reits-leading-body); }
.reits-subhead { font-size: var(--reits-text-subhead); color: var(--reits-secondary-label); line-height: var(--reits-leading-body); }
.reits-footnote { font-size: var(--reits-text-footnote); color: var(--reits-tertiary-label); line-height: var(--reits-leading-relaxed); }
.reits-caption1 { font-size: var(--reits-text-caption1); color: var(--reits-tertiary-label); }
.reits-caption2 { font-size: var(--reits-text-caption2); color: var(--reits-tertiary-label); }

/* ── Fields (iOS Form / Settings style) ── */
.reits-field,
.form-grid input,
.form-grid select,
.form-grid textarea,
.auth-panel input,
.auth-panel select,
.auth-panel textarea,
.price-row input,
.price-create-form input,
.price-create-form select,
.price-create-form textarea,
.booking-form input,
.booking-form select,
.booking-form textarea,
.login-form input,
.login-form select,
.status-form input,
.status-form select,
.status-form textarea,
.lookup-form input,
.form-card input,
.form-card textarea,
.form-card select {
  display: block;
  width: 100%;
  min-height: var(--reits-field-h);
  margin: 0;
  padding: var(--reits-space-3) var(--reits-space-3);
  border: var(--reits-hairline) solid var(--reits-opaque-separator);
  border-radius: var(--reits-radius-md);
  background: var(--reits-surface);
  color: var(--reits-label);
  font: inherit;
  font-size: var(--reits-text-body);
  line-height: var(--reits-leading-body);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

.form-grid textarea,
.auth-panel textarea,
.price-create-form textarea,
.booking-form textarea,
.form-card textarea,
.status-form textarea {
  min-height: 96px;
  resize: vertical;
}

.reits-field:focus,
.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus,
.auth-panel input:focus,
.auth-panel select:focus,
.auth-panel textarea:focus,
.price-row input:focus,
.price-create-form input:focus,
.price-create-form select:focus,
.price-create-form textarea:focus,
.booking-form input:focus,
.booking-form select:focus,
.booking-form textarea:focus,
.login-form input:focus,
.status-form input:focus,
.status-form select:focus,
.status-form textarea:focus,
.lookup-form input:focus,
.form-card input:focus,
.form-card textarea:focus,
.form-card select:focus {
  border-color: color-mix(in srgb, var(--reits-tint) 70%, var(--reits-opaque-separator));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--reits-tint) 28%, transparent);
}

.reits-field-label,
.form-grid label > span,
.auth-panel label > span,
.booking-form label > span,
.status-form label,
.field-label {
  display: block;
  margin: 0 0 var(--reits-space-label-gap);
  font-size: var(--reits-text-footnote);
  font-weight: var(--reits-weight-medium);
  color: var(--reits-secondary-label);
  letter-spacing: 0.01em;
}

.form-grid label,
.auth-panel label {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
}

/**
 * Form stacks — iOS HIG vertical rhythm
 * Labels/inputs/buttons as siblings need an explicit column gap.
 * Without this, block siblings collapse to zero spacing (login console bug).
 */
.auth-panel,
.reits-form-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.auth-panel > .hint,
.auth-panel > .reits-hint,
.reits-form-stack > .hint,
.reits-form-stack > .reits-hint {
  margin: 0;
}

.auth-panel > .primary-btn,
.auth-panel > .secondary-btn,
.auth-panel > .reits-btn,
.reits-form-stack > .primary-btn,
.reits-form-stack > .secondary-btn,
.reits-form-stack > .reits-btn {
  width: 100%;
  flex-shrink: 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.form-grid .wide,
.form-grid label.wide {
  grid-column: 1 / -1;
}

/* ── Buttons ── */
.reits-btn,
.mx-btn-primary,
.primary-btn,
.mx-btn-secondary,
.secondary-btn,
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--reits-space-inline);
  min-height: var(--reits-control-h);
  padding: 0 var(--reits-space-5);
  border-radius: var(--reits-radius-md);
  font: inherit;
  font-size: var(--reits-text-subhead);
  font-weight: var(--reits-weight-semibold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.12s ease, background 0.12s ease, opacity 0.12s ease;
}

.reits-btn:disabled,
.primary-btn:disabled,
.secondary-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.reits-btn-primary,
.mx-btn-primary,
.primary-btn {
  border: none;
  background: var(--reits-tint);
  color: var(--reits-tint-ink);
}

.reits-btn-primary:active:not(:disabled),
.mx-btn-primary:active:not(:disabled),
.primary-btn:active:not(:disabled) {
  transform: scale(0.98);
  background: var(--reits-tint-press);
}

.reits-btn-secondary,
.mx-btn-secondary,
.secondary-btn {
  border: var(--reits-hairline) solid var(--reits-opaque-separator);
  background: var(--reits-surface);
  color: var(--reits-label);
}

.reits-btn-ghost,
.ghost-btn {
  border: var(--reits-hairline) solid var(--reits-opaque-separator);
  background: transparent;
  color: var(--reits-secondary-label);
}

.reits-btn-block,
.primary-btn.block {
  width: 100%;
}

/**
 * Button groups — iOS HIG
 * - .reits-btn-group: spaced chips on a fill track (gap must be visually readable;
 *   white-on-white gap reads as "no spacing" even when layout gap exists)
 * - .reits-seg: classic connected segmented control
 * Literal px first so spacing never collapses if tokens fail to load.
 */
.reits-btn-group {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 10px;
  padding: 4px;
  border-radius: 12px;
  background: var(--reits-fill-tertiary, rgba(120, 120, 128, 0.16));
  box-sizing: border-box;
}

.reits-btn-group > .reits-btn,
.reits-btn-group > .auth-tab,
.reits-btn-group > button {
  flex: 1 1 0;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--reits-control-h, 44px);
  margin: 0;
  padding: 0 12px;
  border-radius: 10px;
  text-align: center;
  line-height: 1;
  box-sizing: border-box;
}

.reits-seg {
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: var(--reits-space-1, 4px);
  border-radius: var(--reits-radius-md, 10px);
  background: var(--reits-fill-tertiary, rgba(120, 120, 128, 0.16));
}

.reits-seg__item,
.reits-seg > button {
  flex: 1 1 0;
  min-width: 0;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--reits-space-1, 4px);
  margin: 0;
  padding: 0 var(--reits-space-3, 12px);
  border: 0;
  border-radius: calc(var(--reits-radius-md, 10px) - 2px);
  background: transparent;
  color: var(--reits-label, #1c1c1e);
  font: inherit;
  font-size: var(--reits-text-footnote, 13px);
  font-weight: var(--reits-weight-medium, 500);
  line-height: 1;
  text-align: center;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.reits-seg__item.is-active,
.reits-seg > button.is-active,
.reits-seg > button[aria-selected="true"] {
  background: var(--reits-surface, #fff);
  font-weight: var(--reits-weight-semibold, 600);
  box-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* ── Grouped panel (iOS inset grouped) ── */
.reits-group,
.panel {
  background: var(--reits-surface);
  border: var(--reits-hairline) solid var(--reits-separator);
  border-radius: var(--reits-radius-lg);
  padding: var(--reits-space-card);
}

.reits-group-title,
.panel h2,
.workspace-title {
  margin: 0 0 var(--reits-space-3);
  font-size: var(--reits-text-headline);
  font-weight: var(--reits-weight-semibold);
  color: var(--reits-label);
}

.reits-hint,
.hint {
  margin: 0 0 var(--reits-space-3);
  font-size: var(--reits-text-footnote);
  color: var(--reits-tertiary-label);
  line-height: var(--reits-leading-relaxed);
}

/* ── Spacing utilities (prefer semantic tokens in page CSS) ── */
.reits-page {
  padding: var(--reits-space-page-y) var(--reits-space-page-x) var(--reits-space-6);
}

.reits-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.reits-stack-tight {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reits-stack-loose {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.reits-row {
  display: flex;
  align-items: center;
  gap: var(--reits-space-inline);
}

.reits-section + .reits-section {
  margin-top: var(--reits-space-section);
}

@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}