/* ═══════════════════════════════════════════════════════════════════
   DC FRANCHISE SIMULATOR — SHARED UI SYSTEM  (UX Plan · Item 1)

   Loaded AFTER css/simulator.css. The broadcast identity (fonts,
   palette, VP skins) lives there; this layer adds the game-first
   design system on top:

     1. Scale tokens        — spacing, type, radius, elevation, state
     2. Interaction states  — hover / focus / disabled / loading /
                              success / error
     3. Accessibility       — keyboard focus rings, reduced motion
     4. Primitives          — surfaces, badges, portraits, empty
                              states, drawers, modals
     5. Utilities           — the small repeated inline-style patterns

   ACCENT RULE — one loud thing per screen.
   Solid var(--accent) backgrounds are reserved for the screen's single
   primary action (.btn-primary or .ui-cta). Every other control sits on
   surface colors; the accent may only appear as a thin border, text
   highlight, or active indicator. If two solid-accent controls are
   visible at once, one of them is wrong.
   ═══════════════════════════════════════════════════════════════════ */

/* ── 1. SCALE TOKENS ───────────────────────────────────────────── */
:root {
  /* spacing — 4px base grid */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 48px;

  /* type scale (shell UI; VP screens keep their own display sizes) */
  --fs-2xs: 9px;
  --fs-xs: 10px;
  --fs-sm: 11px;
  --fs-md: 12px;
  --fs-base: 13px;
  --fs-lg: 15px;
  --fs-xl: 18px;
  --fs-2xl: 24px;

  /* radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 14px;
  --radius-pill: 999px;

  /* elevation */
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-3: 0 12px 40px rgba(0, 0, 0, 0.55);

  /* state colors (semantic — match the strategy-grammar hues) */
  --ok: #3fb950;
  --ok-dim: rgba(63, 185, 80, 0.14);
  --warn: #e0a72e;
  --warn-dim: rgba(224, 167, 46, 0.14);
  --danger: #ef4444;
  --danger-dim: rgba(239, 68, 68, 0.12);
  --info: #57a6e8;
  --info-dim: rgba(87, 166, 232, 0.14);

  /* motion */
  --dur-fast: 0.15s;
  --dur-med: 0.3s;
}

/* ── 2 + 3. INTERACTION STATES & KEYBOARD FOCUS ────────────────── */

/* Keyboard focus ring: visible on keyboard navigation only.
   simulator.css suppresses default outlines on inputs; this restores
   an accent ring for :focus-visible so tab order is always trackable. */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Generic disabled treatment for any .btn variant */
.btn:disabled,
.btn.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  filter: none;
}

/* Loading: keeps the button's size, hides its label, spins a ring */
.btn.is-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn.is-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-top-color: var(--accent);
  animation: ui-spin 0.7s linear infinite;
}
@keyframes ui-spin { to { transform: rotate(360deg); } }

/* Success / error feedback on form fields */
.form-input.is-error,
.form-select.is-error {
  border-color: var(--danger);
}
.form-input.is-success,
.form-select.is-success {
  border-color: var(--ok);
}

/* Inline feedback line under a field or after an action */
.ui-note {
  font-size: var(--fs-sm);
  line-height: 1.5;
  color: var(--muted);
  padding: var(--space-1) 0;
}
.ui-note--ok    { color: var(--ok); }
.ui-note--warn  { color: var(--warn); }
.ui-note--error { color: var(--danger); }
.ui-note--info  { color: var(--info); }

/* Loading placeholder shimmer for panels awaiting data */
.ui-skeleton {
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, var(--surface2) 25%, var(--border) 42%, var(--surface2) 60%);
  background-size: 200% 100%;
  animation: ui-shimmer 1.2s linear infinite;
  color: transparent;
  min-height: 1em;
}
@keyframes ui-shimmer { to { background-position: -200% 0; } }

/* Reduced motion: collapse every animation/transition to a single
   instant frame. Durations stay non-zero so animationend/transitionend
   listeners still fire. */
@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;
  }
}

/* ── 4. PRIMITIVES ─────────────────────────────────────────────── */

/* Surfaces — three loudness levels so panels aren't equally loud.
   quiet: outline only · default: standard panel · raised: focal panel */
.ui-surface {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.ui-surface--quiet {
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
.ui-surface--raised {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}

/* Section heading inside any panel (same voice as .panel-title) */
.ui-section-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
}

/* Badges — semantic status pills for shell UI (VP keeps sg-*) */
.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}
.ui-badge--ok     { background: var(--ok-dim);     border-color: transparent; color: var(--ok); }
.ui-badge--warn   { background: var(--warn-dim);   border-color: transparent; color: var(--warn); }
.ui-badge--danger { background: var(--danger-dim); border-color: transparent; color: var(--danger); }
.ui-badge--info   { background: var(--info-dim);   border-color: transparent; color: var(--info); }

/* Portraits — one circular avatar language everywhere.
   <span class="ui-portrait ui-portrait--md"><img src=…></span>
   Fallback initials render from the span's text when no img. */
.ui-portrait {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--surface2);
  border: 2px solid var(--border);
  overflow: hidden;
  font-weight: 700;
  color: var(--muted);
}
.ui-portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.ui-portrait--sm { width: 24px; height: 24px; font-size: var(--fs-xs); border-width: 1px; }
.ui-portrait--md { width: 38px; height: 38px; font-size: var(--fs-lg); }
.ui-portrait--lg { width: 56px; height: 56px; font-size: var(--fs-xl); }
.ui-portrait--xl { width: 84px; height: 84px; font-size: var(--fs-2xl); }
.ui-portrait--out { filter: grayscale(1) brightness(0.62); }

/* Empty states — icon / headline / hint / optional action */
.ui-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-2);
  padding: var(--space-8) var(--space-5);
  color: var(--muted);
}
.ui-empty-icon  { font-size: 36px; }
.ui-empty-title { font-size: var(--fs-lg); font-weight: 600; color: var(--text); }
.ui-empty-hint  { font-size: var(--fs-base); max-width: 380px; line-height: 1.6; }

/* Drawer — right-side slide-over for editing without leaving context.
   Markup: .ui-drawer-backdrop + .ui-drawer, both toggled with .open. */
.ui-drawer-backdrop,
.ui-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(4, 8, 14, 0.6);
  backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast);
}
.ui-drawer-backdrop.open,
.ui-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}
.ui-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 910;
  width: min(420px, 94vw);
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-3);
  transform: translateX(102%);
  transition: transform var(--dur-med) var(--ease-broadcast);
}
.ui-drawer.open { transform: translateX(0); }
.ui-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
}
.ui-drawer-title { font-size: var(--fs-lg); font-weight: 700; }
.ui-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.ui-drawer-foot {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-4);
  border-top: 1px solid var(--border);
}

/* Modal — centered confirm/decision card */
.ui-modal {
  position: fixed;
  inset: 0;
  z-index: 910;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast);
}
.ui-modal.open { opacity: 1; pointer-events: auto; }
.ui-modal-card {
  width: min(520px, 100%);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-3);
  transform: translateY(10px) scale(0.98);
  transition: transform var(--dur-fast) var(--ease-broadcast);
}
.ui-modal.open .ui-modal-card { transform: none; }
.ui-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--border);
}
.ui-modal-title { font-size: var(--fs-lg); font-weight: 700; }
.ui-modal-body { overflow-y: auto; padding: var(--space-4); font-size: var(--fs-base); line-height: 1.6; }
.ui-modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4) var(--space-4);
}

/* Close button shared by drawers and modals */
.ui-close {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--muted);
  font-size: var(--fs-lg);
  line-height: 1;
  cursor: pointer;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.ui-close:hover { color: var(--text); border-color: var(--muted); }

/* ── 5. UTILITIES (extracted repeated inline patterns) ─────────── */
.u-hidden { display: none !important; }
.u-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.u-muted { color: var(--muted); }
.u-field-note { font-size: var(--fs-sm); color: var(--muted); margin-bottom: 2px; }
.u-hint { font-weight: 400; font-size: var(--fs-xs); color: var(--muted); }
.u-subnote { font-size: var(--fs-md); font-weight: 400; color: var(--muted); }
.u-check-row { display: flex; align-items: center; gap: 6px; cursor: pointer; }