/* cold-start.css — tier 2 layout.
 * Owns: first-visit splash overlay (.cold-start-*). */

/* Cold-start splash crest if present. */
.cold-start-crest svg, .cold-start-crest { animation-duration: 8s !important; }
.cold-start-root {
  position: fixed;
  inset: 0;
  z-index: 99000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  background-image: radial-gradient( ellipse at 50% 38%, rgba(var(--accent-rgb), 0.07) 0%, rgba(0, 0, 0, 0) 60% ), url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='56' height='49' viewBox='0 0 56 49'><g fill='none' stroke='%23ffffff' stroke-opacity='0.06' stroke-width='1'><path d='M14 0.5 L42 0.5 L56 24.5 L42 48.5 L14 48.5 L0 24.5 Z'/><path d='M42 0.5 L70 0.5 L84 24.5 L70 48.5 L42 48.5'/><path d='M-14 24.5 L0 24.5'/><path d='M56 24.5 L70 24.5'/></g></svg>");
  background-size: auto, 56px 49px;
  background-repeat: no-repeat, repeat;
  color: #f1f1f3;
  opacity: 1;
  transition: opacity 1s ease;
  -webkit-tap-highlight-color: transparent;
}
.cold-start-inner {
  position: relative;
  width: min(420px, calc(100vw - 32px));
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-10) var(--sp-8) var(--sp-12);
  gap: var(--sp-9);
}

/* ── Crest */
.cold-start-crest { width: 80px; height: 80px; display: block; color: var(--accent); filter: drop-shadow(0 0 12px rgba(var(--accent-rgb), 0.45)); }
.cold-start-crest-rotor { transform-origin: 50% 50%; transform-box: fill-box; animation: cold-start-rotor-spin 8s linear infinite; }
.cold-start-crest-pulse { transform-origin: 50% 50%; transform-box: fill-box; animation: cold-start-pulse 3.6s ease-in-out infinite; }

/* ── Title */
.cold-start-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-2xl);
  line-height: 1.15;
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
  margin: 0;
  color: #f1f1f3;
}
.cold-start-tagline { font-size: var(--fs-md); letter-spacing: var(--tr-wide); color: rgba(241, 241, 243, 0.72); margin: calc(-1 * var(--sp-3)) 0 0; }

/* ── Progress */
.cold-start-progress { width: min(320px, 100%); display: flex; flex-direction: column; gap: var(--sp-5); align-items: stretch; }
.cold-start-bar-track { position: relative; width: 100%; height: 6px; background: var(--ov-3); border-radius: var(--radius-pill); overflow: hidden; }
.cold-start-bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.5);
  border-radius: var(--radius-pill);
  transition: width 280ms ease;
}
.cold-start-bar-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient( 90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.35) 50%, rgba(255, 255, 255, 0) 100% );
  animation: cold-start-shimmer 1.6s ease-in-out infinite;
}
.cold-start-status {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-6);
  font-size: var(--fs-sm);
  letter-spacing: var(--tr-tight);
  color: rgba(241, 241, 243, 0.85);
  min-height: 16px;
}
.cold-start-status-name {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: var(--tr-wide);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 1 1 auto;
  text-align: left;
  transition: opacity 200ms ease;
}
.cold-start-status-count { font-variant-numeric: tabular-nums; font-feature-settings: 'tnum'; color: rgba(241, 241, 243, 0.65); flex: 0 0 auto; }

/* ── Recently-completed list */
.cold-start-recent {
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(320px, 100%);
  min-height: 88px;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  color: rgba(241, 241, 243, 0.7);
  text-align: left;
}
.cold-start-recent-item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  animation: cold-start-recent-in 380ms ease-out both;
}
.cold-start-recent-tick { color: var(--accent); flex: 0 0 auto; width: 12px; text-align: center; font-weight: 700; }
.cold-start-recent-name { overflow: hidden; text-overflow: ellipsis; }

/* ── Skip button */
.cold-start-skip {
  margin-top: var(--sp-3);
  background: transparent;
  border: 1px solid var(--ov-5);
  color: rgba(241, 241, 243, 0.78);
  font: inherit;
  font-size: var(--fs-sm);
  letter-spacing: var(--tr-normal);
  padding: var(--sp-4) var(--sp-7);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 320ms ease, transform 320ms ease, color 200ms ease, border-color 200ms ease, background 200ms ease;
}

/* ── Error state */
.cold-start-error {
  width: min(360px, 100%);
  display: none;
  flex-direction: column;
  gap: var(--sp-7);
  text-align: left;
  background: var(--sh-3);
  border: 1px solid var(--ov-4);
  border-left: 2px solid #d36969;
  padding: var(--sp-8) var(--sp-8);
  border-radius: var(--radius-sm);
}
.cold-start-error-title { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-base); letter-spacing: var(--tr-normal); margin: 0; color: #f1f1f3; }
.cold-start-error-list {
  list-style: disc;
  margin: 0;
  padding-left: var(--sp-9);
  font-size: var(--fs-sm);
  color: rgba(241, 241, 243, 0.78);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.cold-start-error-actions { display: flex; gap: var(--sp-4); flex-wrap: wrap; margin-top: var(--sp-2); }
.cold-start-error-actions button {
  background: transparent;
  border: 1px solid var(--ov-6);
  color: rgba(241, 241, 243, 0.9);
  font: inherit;
  font-size: var(--fs-sm);
  letter-spacing: var(--tr-normal);
  padding: var(--sp-4) var(--sp-7);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
}
.cold-start-error-actions .cold-start-btn-retry { border-color: rgba(var(--accent-rgb), 0.45); color: var(--accent); }
.cold-start-skip:hover, .cold-start-skip:focus-visible { color: var(--accent); border-color: var(--accent); background: rgba(var(--accent-rgb), 0.08); outline: none; }
.cold-start-skip:focus-visible { box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.35); }
.cold-start-root.is-fading { opacity: 0; pointer-events: none; }
.cold-start-status-name.is-swapping { opacity: 0; }
.cold-start-recent-item.is-aged { opacity: 0.55; }
.cold-start-recent-item.is-faded { opacity: 0.32; }
.cold-start-skip.is-visible { opacity: 1; transform: translateY(0); }
.cold-start-root.is-error .cold-start-error { display: flex; }
.cold-start-root.is-error .cold-start-progress,
.cold-start-root.is-error .cold-start-recent,
.cold-start-root.is-error .cold-start-skip,
.cold-start-root.is-error .cold-start-tagline {
  display: none;
}
@keyframes cold-start-rotor-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes cold-start-pulse {
  0%, 100% { opacity: 0.65; }
  50% { opacity: 1; }
}
@keyframes cold-start-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
@keyframes cold-start-recent-in {
  0% { opacity: 0; transform: translateY(6px); }
  100% { opacity: 1; transform: translateY(0); }
}

@media (min-width: 480px) {
  .cold-start-title { font-size: var(--fs-3xl); }
}

@media (prefers-reduced-motion: reduce) {
  /* ── Reduced motion */
  .cold-start-crest-rotor, .cold-start-crest-pulse, .cold-start-bar-fill::after, .cold-start-recent-item { animation: none !important; }
  .cold-start-root, .cold-start-skip, .cold-start-bar-fill, .cold-start-status-name { transition: none !important; }
}