/**
 * BIP Visualized — Design Tokens & Component CSS
 *
 * Drop-in stylesheet that implements the BIP Visualized style library.
 * Pair with STYLE.md (reference) and style-reference.html (visual).
 *
 * Link this file BEFORE Tailwind so Tailwind utilities can override
 * where needed:
 *
 *   <link rel="stylesheet" href="tokens.css" />
 *   <script src="https://cdn.tailwindcss.com?plugins=forms,typography&ver=3.4"></script>
 *
 * Sections:
 *   1.  CSS custom properties (tokens)
 *   2.  Global element styles
 *   3.  Utility classes
 *   4.  Component: Checkbox (.cb-row)
 *   5.  Component: Tooltips (.sidebar-tooltip, #nav-tooltip)
 *   6.  Component: Spinner (grid-spinner, anim-spin)
 *   7.  Component: Modal
 *   8.  Component: Nav rail
 *   9.  Component: Selectable card (picker-card)
 *   10. Component: Filter button / popover
 *   11. Component: Sort menu
 *   12. Animations & keyframes
 *   13. Form input defaults
 *   14. Print styles
 *   15. Accessibility — reduced motion
 */


/* ============================================================
   1. CSS CUSTOM PROPERTIES (TOKENS)
   ============================================================ */

:root {
  /* ── Colors — brand ──────────────────────────────────────── */
  --color-brand-teal-50:  #f0fafa;
  --color-brand-teal-100: #dff5f4;
  --color-brand-teal-200: #b1e3e2;
  --color-brand-teal-300: #86d1d0;
  --color-brand-teal-400: #43b0ae;
  --color-brand-teal-500: #108c89;  /* ★ brand */
  --color-brand-teal-600: #0d8078;
  --color-brand-teal-700: #006360;
  --color-brand-teal-800: #065443;
  --color-brand-teal-900: #03402f;
  --color-brand-teal-950: #01291a;

  --color-brand-coral-50:  #FCDDD4;
  --color-brand-coral-100: #fecaca;
  --color-brand-coral-400: #F0542A;
  --color-brand-coral-500: #CC3F19;  /* ★ brand */
  --color-brand-coral-600: #dc2626;
  --color-brand-coral-700: #922D11;

  --color-brand-navy-50:  #f0f3f5;
  --color-brand-navy-100: #EBEEF2;
  --color-brand-navy-200: #D0D5DC;
  --color-brand-navy-300: #9ba5b3;
  --color-brand-navy-400: #878990;
  --color-brand-navy-500: #282b3c;  /* ★ brand */
  --color-brand-navy-600: #222538;
  --color-brand-navy-700: #171a2e;
  --color-brand-navy-800: #0e1124;
  --color-brand-navy-900: #080b1c;
  --color-brand-navy-950: #030512;

  --color-brand-black: #161616;
  --color-brand-black-hover: #2d2d2d;
  --color-text-primary: #343434;    /* default body text — warm near-black */
  --color-text-muted: #8A857D;      /* inactive/placeholder text — warm muted */
  --color-beige: #F8F5EF;
  --color-beige-hover: #F1EDE5;     /* hover bg on beige/white surfaces */

  /* ── Colors — semantic ───────────────────────────────────── */
  --color-success-50:  #ecfdf5;
  --color-success-100: #d1fae5;
  --color-success-500: #10b981;
  --color-success-600: #059669;
  --color-success-700: #047857;

  --color-warning-50:  #fffbeb;
  --color-warning-100: #fef3c7;
  --color-warning-500: #f59e0b;
  --color-warning-700: #b45309;

  /* Error — bip-red expanded scale */
  --color-error-50:  #FCDDD4;
  --color-error-100: #fecaca;
  --color-error-400: #F0542A;
  --color-error-500: #CC3F19;
  --color-error-600: #dc2626;
  --color-error-700: #922D11;

  /* Info — bip-blue expanded scale */
  --color-info-50:  #e6f4fb;
  --color-info-100: #CCE9F7;
  --color-info-200: #b3ddf2;  /* ★ preferred border */
  --color-info-500: #0093D8;
  --color-info-700: #006a9e;

  /* ── Colors — neutrals (Tailwind defaults) ───────────────── */
  --color-gray-50:  #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* ── Colors — structural borders ─────────────────────────── */
  --color-structural-border: #CCCAC5;
  --color-structural-border-hover: #ADADAD;
  --color-structural-bg-hover: #E0E0E0;

  /* Coral-tint surface — pairs with brand-coral-400 (#F0542A) for the
     "How to Support" half of the mini-BIP split shell and other gentle
     coral-tinted containers. See STYLE.md §3.3. */
  --color-coral-tint-border: #F1C4B2;
  --color-coral-tint-bg:     #FBE8E0;

  /* Dashed-rule — warm gray for dashed Step-1 boxes on the mini-BIP
     overview pages (canonical structural divider on beige surfaces). */
  --color-dashed-rule:       #C9C5BC;

  /* ── Colors — standalone ─────────────────────────────────── */
  --color-spinner-dot: #b0a892;

  /* ── Colors — overlays ───────────────────────────────────── */
  --overlay-scrim-modal: rgba(0, 0, 0, 0.45);
  --overlay-scrim-picker: rgba(0, 0, 0, 0.40);
  --overlay-hover-image: rgba(22, 22, 22, 0.55);
  --overlay-loading-beige: rgba(248, 245, 239, 0.88);

  /* ── Typography ──────────────────────────────────────────── */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
                      'Roboto', 'Helvetica Neue', sans-serif;

  /* Semantic typography tokens */
  --font-size-page-card:     0.5rem;    /* 8px  */
  --font-size-page-label:    0.625rem;  /* 10px */
  --font-size-meta:          0.6875rem; /* 11px — tertiary metadata only (kickers, step subtext, status) */
  --font-size-modal-card:    1rem;      /* 16px */
  --font-size-modal-header:  1.25rem;   /* 20px */
  --line-height-card:        120%;

  /* Letter spacing */
  --tracking-normal: 0;
  --tracking-wide:   0.05em;
  --tracking-wider:  0.08em;
  --tracking-widest: 0.10em;

  /* ── Icon sizes ──────────────────────────────────────────── */
  --icon-size-placeholder: 1.5rem;  /* 24px */
  --icon-size-modal:       3rem;    /* 48px */

  /* ── Border radius ───────────────────────────────────────── */
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   8px;
  --radius-xl:   10px;
  --radius-2xl:  12px;
  --radius-3xl:  14px;
  --radius-4xl:  16px;
  --radius-5xl:  20px;
  --radius-full: 9999px;

  /* ── Shadows / elevation ─────────────────────────────────── */
  --shadow-sm:          0 1px 1px rgba(0, 0, 0, 0.25);
  --shadow-md:          0 2px 8px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.06);
  --shadow-lg:          0 4px 12px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.08);
  --shadow-xl:          0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-2xl:         0 24px 64px rgba(0, 0, 0, 0.18);
  --shadow-3xl:         0 24px 64px rgba(0, 0, 0, 0.25);
  --shadow-hover-card:  0 2px 8px rgba(0, 0, 0, 0.07);

  /* ── Z-index scale ───────────────────────────────────────── */
  --z-base:           0;
  --z-dropdown:       10;
  --z-sticky:         20;
  --z-nav:            30;
  --z-modal-overlay:  100;
  --z-modal:          1001;
  --z-tooltip:        9999;

  /* ── Motion ──────────────────────────────────────────────── */
  --duration-instant: 80ms;
  --duration-fast:    120ms;
  --duration-default: 150ms;
  --duration-medium:  180ms;
  --duration-slow:    220ms;
  --duration-rail:    240ms;

  --easing-default:  ease;
  --easing-out:      ease-out;
  --easing-entrance: cubic-bezier(0.16, 1, 0.3, 1);
}


/* ============================================================
   2. GLOBAL ELEMENT STYLES
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  font-family: var(--font-family-sans);
}

body {
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Global H2 override (matches production convention) */
h2 {
  font-size: 14px !important;
  font-weight: 400 !important;
}

/* App shell — fixed viewport, never scrolls the page */
#app {
  width: 100%;
  height: 100vh;
  overflow: hidden;
}


/* ============================================================
   3. UTILITY CLASSES
   ============================================================ */

/* ── Typography utilities ────────────────────────────────── */
.text-page-card          { font-size: var(--font-size-page-card); }
.text-page-label         { font-size: var(--font-size-page-label); }
.text-meta               { font-size: var(--font-size-meta); line-height: 1rem; }
.text-modal-card         { font-size: var(--font-size-modal-card); }
.leading-card            { line-height: var(--line-height-card); }
.text-page-card-default  { font-size: var(--font-size-page-card); line-height: var(--line-height-card); }
.text-modal-card-default { font-size: var(--font-size-modal-card); line-height: var(--line-height-card); }

/* ── Brand color utilities ───────────────────────────────── */
.text-brand-black   { color: var(--color-brand-black); }
.bg-brand-black     { background-color: var(--color-brand-black); }
.border-brand-black { border-color: var(--color-brand-black); }

.hover\:text-brand-black:hover   { color: var(--color-brand-black); }
.hover\:bg-brand-black:hover     { background-color: var(--color-brand-black); }
.hover\:border-brand-black:hover { border-color: var(--color-brand-black); }

/* 60% opacity variant — for H2 underline and similar dividers */
.border-brand-black-60 { border-color: rgba(22, 22, 22, 0.6); }

/* ── Text color utilities (warm near-blacks) ─────────────── */
.text-text-primary { color: var(--color-text-primary); }
.text-text-muted   { color: var(--color-text-muted); }

/* ── Surface utilities (beige variants) ──────────────────── */
.bg-beige       { background-color: var(--color-beige); }
.bg-beige-hover { background-color: var(--color-beige-hover); }
.hover\:bg-beige-hover:hover { background-color: var(--color-beige-hover); }

/* ── Icon size utilities ─────────────────────────────────── */
.icon-placeholder {
  width: var(--icon-size-placeholder);
  height: var(--icon-size-placeholder);
  color: var(--color-gray-300);
  transition: color var(--duration-default) var(--easing-out);
}

#edit-modal .group:hover .icon-placeholder,
.placeholder-resource-card .group\/card:hover svg {
  color: var(--color-brand-black);
}

.icon-modal {
  width: var(--icon-size-modal);
  height: var(--icon-size-modal);
}

/* ── Modal section header ────────────────────────────────── */
.modal-section-header {
  font-size: var(--font-size-modal-header);
  font-weight: 400;
  color: #000;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-brand-black);
  padding-bottom: 0.5rem;
}

.modal-section-header.with-icon {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Line clamp polyfill ─────────────────────────────────── */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}


/* ============================================================
   4. COMPONENT: CHECKBOX (.cb-row)
   ============================================================ */

.cb-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 16px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background var(--duration-default) var(--easing-default);
  user-select: none;
}

.cb-row:hover { background: var(--color-gray-200); }
.cb-row:hover .cb-box::before { border-color: var(--color-gray-400); }

.cb-input {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.cb-box {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.cb-box::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-gray-300);
  background: #fff;
  transition: background var(--duration-fast) var(--easing-default),
              border-color var(--duration-fast) var(--easing-default);
}

.cb-box::after {
  content: '';
  position: absolute;
  display: none;
  width: 10px;
  height: 10px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M1.5 5l2.5 2.5 4.5-5' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.cb-input:checked + .cb-box::before {
  background: var(--color-brand-black);
  border-color: var(--color-brand-black);
}

.cb-input:checked + .cb-box::after { display: block; }

.cb-row:hover .cb-input:checked + .cb-box::before {
  background: var(--color-brand-black-hover);
  border-color: var(--color-brand-black-hover);
}

/* Radio variant — same .cb-row + .cb-input, but pair with .cb-box.is-radio.
   Overrides the box's border-radius to round and swaps the checkmark for
   a centered white dot. See STYLE.md §10.1. */
.cb-box.is-radio::before { border-radius: 9999px; }
.cb-box.is-radio::after {
  border-radius: 9999px;
  width: 6px;
  height: 6px;
  background-color: #fff;
  background-image: none;
}

.cb-input:indeterminate + .cb-box::before {
  background: var(--color-brand-black);
  border-color: var(--color-brand-black);
}

.cb-input:indeterminate + .cb-box::after {
  display: block;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M2 5h6' stroke='white' stroke-width='1.5' stroke-linecap='round' fill='none'/%3E%3C/svg%3E");
}

.cb-input:focus-visible + .cb-box::before {
  outline: 2.5px solid var(--color-brand-black);
  outline-offset: 2px;
}

.cb-input:disabled + .cb-box { cursor: not-allowed; }
.cb-input:disabled + .cb-box::before {
  background: var(--color-gray-100);
  border-color: var(--color-gray-200);
}

.cb-row:has(.cb-input:disabled) { cursor: not-allowed; }
.cb-row:has(.cb-input:disabled):hover { background: transparent; }

.cb-label {
  font-size: 14px;
  color: #343434;
  font-weight: 500;
  line-height: 1.4;
}

.cb-input:disabled ~ .cb-label { color: var(--color-gray-400); }

/* "Show all" sticky variant */
.cb-show-all-sticky {
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
  background: #fff;
  padding-top: 2px;
}
.cb-row--show-all { margin-bottom: 2px; }
.cb-label--show-all { font-weight: 600; color: var(--color-brand-black); }
.cb-show-all-divider {
  height: 1px;
  background: var(--color-gray-200);
  margin: 6px 16px 8px;
}

/* Groups */
.cb-group { margin-bottom: 20px; }
.cb-group:last-child { margin-bottom: 0; }

.cb-group-header {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-gray-500);
  padding: 0 16px 4px;
  margin-top: 16px;
}

.cb-group:first-child .cb-group-header { margin-top: 4px; }


/* ============================================================
   5. COMPONENT: TOOLTIPS
   ============================================================ */

/* Sidebar tooltip — appended to <body> so parent overflow:hidden doesn't clip */
.sidebar-tooltip {
  position: fixed;
  z-index: var(--z-tooltip);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-default) var(--easing-default),
              visibility var(--duration-default) var(--easing-default);
  white-space: nowrap;
}

.sidebar-tooltip.is-visible {
  opacity: 1;
  visibility: visible;
}

.sidebar-tooltip-inner {
  background: #fff;
  color: var(--color-gray-900);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.sidebar-tooltip-arrow {
  position: absolute;
  left: -4px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background: #fff;
  box-shadow: -1px 1px 2px rgba(0, 0, 0, 0.08);
}

/* Nav tooltip — for nav rail items */
#nav-tooltip {
  display: none;
  position: fixed;
  z-index: var(--z-tooltip);
  pointer-events: none;
  background: #fff;
  color: #111;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  padding: 5px 10px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--easing-default);
}

#nav-tooltip.nav-tooltip--visible { display: block; opacity: 1; }

#nav-tooltip::before {
  content: '';
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-right-color: rgba(0, 0, 0, 0.08);
  margin-right: 1px;
}

#nav-tooltip::after {
  content: '';
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-right-color: #fff;
}


/* ============================================================
   6. COMPONENT: SPINNER (3-dot grid spinner — canonical)
   ============================================================ */

.grid-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
  width: 100%;
  grid-column: 1 / -1;
}

.grid-spinner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-spinner-dot);
  margin: 0 4px;
  animation: spinnerBounce 1.2s ease-in-out infinite;
}

.grid-spinner-dot:nth-child(2) { animation-delay: 0.15s; }
.grid-spinner-dot:nth-child(3) { animation-delay: 0.30s; }

@keyframes spinnerBounce {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
  40%           { opacity: 1;   transform: scale(1); }
}

/* Inline ring spinner — for buttons, image overlays */
.anim-spin { animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }


/* ============================================================
   7. COMPONENT: MODAL
   ============================================================ */

#modal-container {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-medium) var(--easing-default);
}

#modal-container.modal-is-open {
  opacity: 1;
  pointer-events: auto;
}

#modal-container .modal-panel {
  transform: scale(0.97) translateY(6px);
  transition: transform var(--duration-medium) var(--easing-entrance),
              opacity var(--duration-medium) var(--easing-default);
  opacity: 0;
}

#modal-container.modal-is-open .modal-panel {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* Standalone overlay animation (used by inline modals like the Image Generator) */
.overlay-anim         { animation: modal-backdrop-in var(--duration-medium) var(--easing-default) forwards; }
.overlay-anim > div   { animation: modal-panel-in    var(--duration-medium) var(--easing-entrance) forwards; }

@keyframes modal-backdrop-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modal-panel-in {
  from { opacity: 0; transform: scale(0.97) translateY(6px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}

@keyframes modal-backdrop-out {
  from { opacity: 1; } to { opacity: 0; }
}

@keyframes modal-panel-out {
  from { opacity: 1; transform: scale(1) translateY(0); }
  to   { opacity: 0; transform: scale(0.97) translateY(6px); }
}

.modal-leaving       { animation: modal-backdrop-out var(--duration-fast) var(--easing-default) forwards; }
.modal-leaving > *   { animation: modal-panel-out    var(--duration-fast) var(--easing-default) forwards; }


/* ============================================================
   8. COMPONENT: NAV RAIL
   ============================================================ */

#nav-rail-container {
  position: relative;
  z-index: var(--z-sticky);
}

#nav-rail {
  width: 56px;
  transition: width var(--duration-rail) var(--easing-out);
}

#nav-rail.is-expanded { width: 220px; }

#nav-rail-items {
  padding-left: 8px;
  padding-right: 8px;
}

.nav-rail-item {
  gap: 12px;
  width: 100%;
  align-self: stretch;
}

/* Labels — invisible & zero-width when collapsed */
#nav-rail .nav-label {
  opacity: 0;
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  transform: translateX(-8px);
  transition: opacity 140ms ease-out,
              transform var(--duration-medium) ease-out,
              max-width var(--duration-rail) ease-out;
}

#nav-rail.is-expanded .nav-label {
  opacity: 1;
  max-width: 180px;
  transform: translateX(0);
  transition: opacity 140ms ease-out 160ms,
              transform var(--duration-medium) ease-out 140ms,
              max-width var(--duration-rail) ease-out;
}

/* Settings panel — anchored at bottom, expands upward */
.settings-wrapper {
  max-height: 57px;
  transition: max-height 280ms ease-in-out;
}

.settings-wrapper.settings-open {
  max-height: 320px;
  min-width: 220px;
}

/* Logo mark — always anchored at fixed left, no horizontal jump on expand */
.nav-logo-mark {
  position: absolute;
  left: 11px;
  top: 50%;
  height: 21.6px;
  width: auto;
  transform: translateY(-50%);
  pointer-events: none;
}

.nav-logo-suffix {
  position: absolute;
  left: 50px;
  top: 50%;
  height: 24px;
  width: auto;
  pointer-events: none;
  opacity: 0;
  transform: translate(-6px, calc(-50% - 2px));
  transition: opacity 200ms ease-out,
              transform var(--duration-rail) ease-out;
}

#nav-rail.is-expanded .nav-logo-suffix {
  opacity: 1;
  transform: translate(0, calc(-50% - 2px));
  transition: opacity 200ms ease-out 100ms,
              transform var(--duration-rail) ease-out 80ms;
}

/* Nav arrow press feedback */
.nav-arrow:not([disabled]):active {
  transform: scale(0.9);
  transition: transform var(--duration-instant) var(--easing-default);
}


/* ============================================================
   9. COMPONENT: SELECTABLE CARD (picker-card)
   ============================================================ */

.picker-card.selected {
  border: 1.5px solid var(--color-brand-black) !important;
}

.picker-card.selected .picker-check {
  display: flex !important;
}


/* ============================================================
   10. COMPONENT: FILTER BUTTON / POPOVER
   ============================================================ */

.picker-filter-btn.open {
  border-color: var(--color-brand-black) !important;
  color: var(--color-brand-black) !important;
}


/* ============================================================
   11. COMPONENT: SORT MENU
   ============================================================ */

.sort-menu-item .sort-menu-check {
  opacity: 0;
  transition: opacity var(--duration-default) var(--easing-default);
}

.sort-menu-item[aria-checked="true"] .sort-menu-check { opacity: 1; }
.sort-menu-item[aria-checked="true"] { font-weight: 500; }

.sort-menu-item:focus-visible {
  outline: 2px solid var(--color-brand-teal-500);
  outline-offset: -2px;
}


/* ============================================================
   12. ANIMATIONS & KEYFRAMES (shared)
   ============================================================ */

/* Card fade-in — uniform, single keyframe */
.card-fade-in {
  opacity: 0;
  transform: translateY(6px);
  animation: cardAppear 0.3s ease-out forwards;
}

@keyframes cardAppear {
  to { opacity: 1; transform: translateY(0); }
}

/* Grid content exit transition */
.grid-content-exit {
  opacity: 0;
  transition: opacity var(--duration-default) ease-out;
}

/* Page viewer transition */
@keyframes page-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-viewer-transitioning { pointer-events: none; }

.page-viewer-content-enter {
  animation: page-fade-in 200ms var(--easing-entrance) forwards;
}


/* ============================================================
   13. FORM INPUT DEFAULTS
   ============================================================ */

/* Suppress browser autofill blue/yellow bg */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
textarea:-webkit-autofill,
textarea:-webkit-autofill:hover,
textarea:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0 1000px #fff inset;
          box-shadow: 0 0 0 1000px #fff inset;
  -webkit-text-fill-color: var(--color-gray-700);
  transition: background-color 5000s ease-in-out 0s;
}

/* Form-element focus — STYLE.md §7.1: inputs change border to brand-black,
   no outline ring. Suppress Tailwind forms-plugin ring + browser outline. */
input:focus,
input:focus-visible,
textarea:focus,
textarea:focus-visible,
select:focus,
select:focus-visible {
  outline: none;
  box-shadow: none;
  --tw-ring-shadow: 0 0 transparent;
  --tw-ring-offset-shadow: 0 0 transparent;
  border-color: var(--color-brand-black);
}

/* Common state classes — JS-toggled */
.loading.visible    { display: flex !important; }
.error-msg.visible  { display: flex !important; }


/* ============================================================
   14. SIDEBAR HEIGHT-RESPONSIVE BEHAVIOR
   ============================================================ */

#sidebar nav > ul { max-height: 100%; }

@media (max-height: 640px) {
  #sidebar > div {
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  #sidebar > div > button:first-child {
    margin-bottom: 1rem;
  }
}


/* ============================================================
   15. PRINT STYLES (8.5 × 11" page export)
   ============================================================ */

@media print {
  .scalable-content {
    transform: none !important;
    width: 8.5in !important;
    height: 11in !important;
  }

  .page-container {
    width: 8.5in !important;
    height: 11in !important;
    max-width: none !important;
    max-height: none !important;
    box-shadow: none !important;
  }

  .page-content-scalable {
    width: 8.5in !important;
    height: 11in !important;
    overflow: visible !important;
  }
}


/* ============================================================
   16. ACCESSIBILITY — REDUCED MOTION
   ============================================================ */

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


/* ============================================================
   17. COMPONENT: STEPPER BULLET — STYLE.md §10.14c
   ============================================================ */

/* 22x22 rounded-full bullet used in the wizard rail. Three state
   modifiers: default (gray-300 border), .is-active (brand-black fill),
   .is-done (teal-500 fill + check icon). */
.stepper-bullet {
  width: 22px;
  height: 22px;
  border-radius: 9999px;
  border: 1.5px solid var(--color-gray-300);
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  transition: background var(--duration-default) ease,
              border-color var(--duration-default) ease,
              color var(--duration-default) ease;
}

.stepper-bullet.is-done {
  background: var(--color-brand-teal-500);
  border-color: var(--color-brand-teal-500);
  color: #fff;
}

.stepper-bullet.is-active {
  background: var(--color-brand-black);
  border-color: var(--color-brand-black);
  color: #fff;
}