/* Planning Poker — layout & components.
   All colors come from ../palettes/web-tokens.css custom properties
   ([data-theme="coast"], dark via [data-mode="dark"] on <html>). */

* { box-sizing: border-box; }

/* Keep the hidden attribute authoritative over display rules below. */
[hidden] { display: none !important; }

/* Motion principles:
   - State-critical motion (card flips, results) is TRANSITION-based and
     driven by class flips from JS timers, so a throttled/occluded tab
     (screen sharing!) still lands on the final state.
   - Keyframe entrances always start legible (opacity >= 0.4) so a frozen
     first frame never blanks content.
   - Everything collapses under prefers-reduced-motion. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}

.no-anim { animation: none !important; }

@keyframes rise-in {
  from { opacity: 0.4; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pop-in {
  0% { opacity: 0.5; transform: scale(0.85); }
  70% { transform: scale(1.06); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

main > section { animation: rise-in 0.25s ease backwards; }

/* Brief global color transition while switching light/dark. */
.theme-anim, .theme-anim * {
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease !important;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-surface-background);
  color: var(--color-text-primary);
}

:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

/* ---------- header ---------- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-surface-default);
  border-bottom: 1px solid var(--color-border-default);
}

.app-header-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.app-logo { width: 1.6rem; height: 1.6rem; }

.app-header-actions { display: flex; align-items: center; gap: 0.5rem; }

/* ---------- layout ---------- */

main {
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

h1 { font-size: 1.6rem; margin: 0.5rem 0 0.75rem; }
h1:focus { outline: none; }

.lead {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 42rem;
}

.landing-points {
  margin-top: 2rem;
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 42rem;
}
.landing-points li { margin: 0.4rem 0; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.5rem 1.1rem;
  border-radius: 0.6rem;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  color: var(--color-text-primary);
  background: transparent;
}
.btn svg { width: 1em; height: 1em; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn {
  transition: background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease, opacity 0.2s ease, transform 0.1s ease;
}
.btn:not(:disabled):active { transform: scale(0.96); }
.btn.pulse { animation: pulse 0.3s ease; }

#theme-toggle svg { transition: transform 0.45s cubic-bezier(0.3, 0.7, 0.25, 1.2); }
#theme-toggle[aria-pressed="true"] svg { transform: rotate(220deg); }

.btn-primary {
  background: var(--color-brand-primary);
  color: var(--color-neutral-white);
}
.btn-primary:not(:disabled):hover { background: var(--color-action-primary-hover); }
[data-mode="dark"] .btn-primary { color: var(--color-neutral-black); }

.btn-secondary {
  border-color: var(--color-brand-primary);
  color: var(--color-brand-primary);
  background: var(--color-surface-default);
}
.btn-secondary:not(:disabled):hover { background: var(--color-surface-highlight); }

.btn-ghost { color: var(--color-text-secondary); }
.btn-ghost:hover { background: var(--color-surface-highlight); color: var(--color-text-primary); }

.btn-icon { min-width: 44px; padding: 0.5rem; }
.btn-icon svg { width: 1.15rem; height: 1.15rem; }

.btn-large { font-size: 1.05rem; padding: 0.7rem 1.6rem; }

/* ---------- forms ---------- */

.field { margin: 1.1rem 0; max-width: 24rem; }

.field label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
.label-soft { font-weight: 400; color: var(--color-text-secondary); }

.field input,
.field select,
.story-form input {
  width: 100%;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  font: inherit;
  color: var(--color-text-primary);
  background: var(--color-surface-default);
  border: 1px solid var(--color-text-secondary-muted);
  border-radius: 0.6rem;
}

.field-hint { color: var(--color-text-secondary); font-size: 0.9rem; margin: 0.35rem 0 0; }
.field-error { color: var(--color-feedback-error); font-size: 0.9rem; margin: 0.35rem 0 0; }
input[aria-invalid="true"] { border-color: var(--color-feedback-error); }

/* ---------- room ---------- */

.session-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}
.session-title-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.session-head h1 { margin-bottom: 0.1rem; overflow-wrap: anywhere; }

.session-date {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.presenting .session-head h1 { font-size: clamp(1.8rem, 3.5vw, 2.3rem); }
.presenting .session-date { font-size: 1.1rem; }

.title-form { display: flex; gap: 0.6rem; margin: 0.75rem 0; flex-wrap: wrap; max-width: 32rem; }
.title-form input {
  flex: 1 1 14rem;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  font: inherit;
  color: var(--color-text-primary);
  background: var(--color-surface-default);
  border: 1px solid var(--color-text-secondary-muted);
  border-radius: 0.6rem;
}

.room-grid { display: grid; gap: 1.5rem; margin-top: 1rem; }

@media (min-width: 720px) {
  .room-grid { grid-template-columns: minmax(0, 1fr) 16rem; }
}

.room-main { display: flex; flex-direction: column; gap: 1.5rem; min-width: 0; }

.panel-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin: 0 0 0.5rem;
}

.story-panel,
.deck-panel,
.results-panel,
.room-side {
  background: var(--color-surface-default);
  border: 1px solid var(--color-border-default);
  border-radius: 0.9rem;
  padding: 1.1rem 1.25rem;
}

.story-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  overflow-wrap: anywhere;
}
.story-title-row {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
}
.story-title-row .story-title { flex: 1 1 auto; min-width: 0; }

.story-form { display: flex; gap: 0.6rem; flex-wrap: wrap; max-width: 36rem; margin-top: 0.75rem; }
.story-form input { flex: 1 1 14rem; }

/* ---------- deck ---------- */

.deck {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.card {
  min-width: 3.4rem;
  min-height: 4.6rem;
  padding: 0.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-primary);
  background: var(--color-surface-background);
  border: 2px solid var(--color-border-default);
  border-radius: 0.7rem;
  cursor: pointer;
  transition: transform 0.18s cubic-bezier(0.3, 0.7, 0.25, 1.2),
    border-color 0.15s ease, background 0.15s ease,
    box-shadow 0.18s ease, opacity 0.25s ease;
  animation: rise-in 0.3s ease backwards;
  animation-delay: var(--deal-delay, 0ms);
}

.card:not([aria-disabled="true"]):hover {
  transform: translateY(-4px);
  border-color: var(--color-text-secondary-muted);
}
.card:not([aria-disabled="true"]):active { transform: translateY(-1px) scale(0.96); }

.card[aria-checked="true"] {
  background: var(--color-surface-highlight);
  border-color: var(--color-brand-primary);
  transform: translateY(-6px);
  box-shadow: 0 6px 14px -8px var(--color-brand-primary);
}

.card[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; }

/* ---------- board (Scrum Master presentation view) ---------- */

.presenting .room-grid { grid-template-columns: minmax(0, 1fr); }
.presenting .room-side,
.presenting #deck-panel { display: none !important; }

.presenting .story-title { font-size: clamp(1.6rem, 4vw, 2.6rem); }

.board-status {
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  margin: 0 0 1rem;
}

.board-tiles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 1.75rem;
}

.tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  width: 7.5rem;
  text-align: center;
}

.tile.is-new { animation: pop-in 0.3s ease backwards; }

/* Two-faced card. The flip is a TRANSITION (never a keyframe animation):
   throttled/occluded tabs (screen shares!) freeze keyframes on their first,
   invisible frame, while a transition always lands on the final state. */
.tile-flip-stage { display: block; perspective: 700px; }

.tile-flip {
  display: block;
  position: relative;
  width: 5.4rem;
  height: 7.2rem;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.35, 0.7, 0.25, 1);
  transition-delay: var(--flip-delay, 0ms);
}
.tile-flip.is-flipped { transform: rotateY(180deg); }

.tile-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  border: 2px solid var(--color-border-default);
  background: var(--color-surface-background);
  color: var(--color-text-secondary);
}

.tile-face.is-waiting { border-style: dashed; }

.tile-face.is-voted {
  border-color: var(--color-brand-primary);
  background: var(--color-brand-primary);
  color: var(--color-neutral-white);
  background-image: repeating-linear-gradient(
    45deg, transparent 0 6px, rgba(255, 255, 255, 0.14) 6px 12px);
  animation: pop-in 0.25s ease;
}
[data-mode="dark"] .tile-face.is-voted { color: var(--color-neutral-black); }

.tile-face-back {
  transform: rotateY(180deg);
  border-color: var(--color-brand-primary);
  background: var(--color-surface-highlight);
  color: var(--color-text-primary);
  animation: none;
}

.tile-name {
  font-weight: 600;
  overflow-wrap: anywhere;
  line-height: 1.25;
}

.tile-role { font-size: 0.78rem; color: var(--color-text-secondary); }

.presenting .results-stats dd { font-size: 2.6rem; }
.presenting .consensus-nudge { font-size: 1.35rem; }

/* ---------- facilitator controls ---------- */

.facilitator-controls { display: flex; gap: 0.6rem; flex-wrap: wrap; }

/* ---------- participants ---------- */

.vote-progress { color: var(--color-text-secondary); font-size: 0.95rem; margin: 0 0 0.6rem; }

.participants { list-style: none; margin: 0; padding: 0; }

.participants li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--color-border-default);
}
.participants li.is-new { animation: rise-in 0.3s ease backwards; }
.participants li:last-child { border-bottom: none; }

.participant-name { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }

.role-chip {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 1rem;
  background: var(--color-surface-highlight);
  color: var(--color-text-primary);
}

.vote-state {
  flex-shrink: 0;
  min-width: 2.2rem;
  text-align: center;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.vote-state.is-thinking { color: var(--color-text-secondary); font-weight: 400; font-size: 0.85rem; }
.vote-state.is-voted { color: var(--color-feedback-success); animation: pop-in 0.25s ease; }
.vote-state.is-revealed {
  background: var(--color-surface-highlight);
  border-radius: 0.4rem;
  padding: 0.1rem 0.35rem;
  animation: pop-in 0.3s ease backwards;
  animation-delay: var(--reveal-delay, 0ms);
}

.ephemeral-note {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ---------- results ---------- */

.results-panel {
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.results-panel.pre-enter { opacity: 0.4; transform: translateY(12px); }

.consensus-nudge { transition: opacity 0.3s ease 0.3s; }
.results-panel.pre-enter .consensus-nudge { opacity: 0.4; transition: none; }

.results-panel h2 { margin: 0 0 0.75rem; font-size: 1.1rem; }
.results-panel h2:focus { outline: none; }

.results-stats {
  display: flex;
  gap: 2.5rem;
  margin: 0 0 0.5rem;
}
.results-stats dt { font-size: 0.8rem; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.06em; }
.results-stats dd { margin: 0; font-size: 1.7rem; font-weight: 700; font-variant-numeric: tabular-nums; }

.consensus-nudge { font-size: 1rem; margin: 0.75rem 0 1rem; }

/* ---------- notices / status ---------- */

.story-panel, .notice-box, .board-status { animation: rise-in 0.3s ease backwards; }

.notice-box {
  margin: 1.25rem 0;
  padding: 1rem 1.25rem;
  background: var(--color-feedback-warning-surface);
  border: 1px solid var(--color-feedback-warning-muted);
  border-radius: 0.9rem;
  max-width: 42rem;
}
.notice-box h2 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.notice-box p { margin: 0.25rem 0 0.75rem; }
.notice-box code {
  background: var(--color-surface-default);
  padding: 0.1rem 0.35rem;
  border-radius: 0.3rem;
}
.notice-box a { color: var(--color-brand-primary); }

.connection-status {
  padding: 0.5rem 0.9rem;
  border-radius: 0.6rem;
  background: var(--color-feedback-warning-surface);
  color: var(--color-text-primary);
  font-size: 0.9rem;
  max-width: 42rem;
}
