/* =========================================================
 * Trade Logik — PWA Splash (centered + modern + white bg)
 * ========================================================= */

/* Accent color follows your theme; background is forced white */
:root {
  --pwa-primary: var(--bs-primary, var(--tblr-primary, #3b82f6));
  --pwa-card-max: 520px;
  --pwa-radius: 20px;
  --pwa-ease: cubic-bezier(.22,.61,.36,1);
  --pwa-fade: .34s;
  --pwa-bar-dur: 1.15s;
}

/* Lock scroll while splash is visible (belt & braces) */
.pwa-splash-lock { overflow: hidden !important; }

/* Fullscreen layer — ALWAYS white, perfectly centered */
#pwa-splash {
  position: fixed;
  inset: 0;
  z-index: 2147483000;

  /* Centering: grid + flex fallback */
  display: grid;
  place-items: center;
  /* flex fallback if some embedded webviews ignore grid */
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center; -ms-flex-pack: center; justify-content: center;
  -webkit-box-align: center; -ms-flex-align: center; align-items: center;

  /* ensure full viewport on mobile with dynamic toolbars */
  min-block-size: 100dvb; /* modern */
  min-height: 100lvh;     /* fallback */
  height: 100vh;          /* old fallback */

  padding: calc(20px + env(safe-area-inset-top)) 20px calc(20px + env(safe-area-inset-bottom));
  background: #ffffff; /* fixed white */

  /* subtle depth to avoid “flat white” */
  --vignette: radial-gradient(1100px 700px at 50% -20%, rgba(0,0,0,.06), transparent 60%);
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='2' seed='3' type='fractalNoise'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='table' tableValues='0 0 0 .04 .08 .04 0 0'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
  background-image: var(--vignette), var(--grain);
  background-repeat: no-repeat, repeat;
  background-size: cover, 240px 240px;
  background-position: center, center;

  transition: opacity var(--pwa-fade) var(--pwa-ease), transform var(--pwa-fade) var(--pwa-ease);
  will-change: opacity, transform;
}

#pwa-splash.hide { opacity: 0; transform: translateY(6px); pointer-events: none; }

/* Card */
#pwa-splash .pwa-card {
  width: min(92vw, var(--pwa-card-max));
  border-radius: var(--pwa-radius);
  background: #ffffff;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow:
    0 20px 60px rgba(0,0,0,.10),
    0 6px 18px rgba(0,0,0,.06);
  padding: 36px 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  animation: pwa-pop-in .36s var(--pwa-ease) both;
}

@keyframes pwa-pop-in {
  from { opacity: 0; transform: translateY(8px) scale(.985); }
  to   { opacity: 1; transform: translateY(0)   scale(1);    }
}

/* Logo */
#pwa-splash .pwa-logo {
  width: min(66vw, 260px);
  height: auto;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.10));
}

/* ============================
   Spinner (dual ring w/ glow)
   ============================ */
#pwa-splash .pwa-spinner {
  position: relative;
  width: 56px;
  height: 56px;
}
#pwa-splash .pwa-spinner::before,
#pwa-splash .pwa-spinner::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: 50%;
}

/* Base track ring */
#pwa-splash .pwa-spinner::before {
  background:
    radial-gradient(circle 16px, transparent 55%, rgba(0,0,0,.14) 56% 99%, transparent 100%),
    conic-gradient(from 0deg, rgba(0,0,0,.16) 0turn, transparent .78turn);
  -webkit-mask: radial-gradient(closest-side, transparent 60%, #000 61%);
          mask: radial-gradient(closest-side, transparent 60%, #000 61%);
  filter: blur(.15px);
}

/* Active arc */
#pwa-splash .pwa-spinner::after {
  background: conic-gradient(from 0deg, var(--pwa-primary) 0.18turn, transparent .42turn 1turn);
  -webkit-mask: radial-gradient(closest-side, transparent 60%, #000 61%);
          mask: radial-gradient(closest-side, transparent 60%, #000 61%);
  animation: pwa-spin 1s linear infinite;
  filter:
    drop-shadow(0 0 12px color-mix(in oklab, var(--pwa-primary) 45%, transparent))
    drop-shadow(0 0 3px  color-mix(in oklab, var(--pwa-primary) 65%, transparent));
}

@keyframes pwa-spin { to { transform: rotate(360deg); } }

/* ============================
   Progress bar (background sweep — Safari-proof)
   ============================ */
#pwa-splash .pwa-bar {
  position: relative;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  overflow: hidden;

  /* static track */
  background: rgba(0,0,0,.08);

  /* animated sheen layer */
  background-image:
    linear-gradient(90deg,
      transparent 0%,
      color-mix(in oklab, var(--pwa-primary) 65%, white 15%) 20%,
      var(--pwa-primary) 40%,
      color-mix(in oklab, var(--pwa-primary) 65%, black 6%) 60%,
      transparent 80%);
  background-size: 200% 100%;
  background-position: -50% 0;
  animation: pwa-bar-sheen var(--pwa-bar-dur) var(--pwa-ease) infinite;
}

@keyframes pwa-bar-sheen {
  0%   { background-position: -50% 0; }
  50%  { background-position:  25% 0; }
  100% { background-position: 150% 0; }
}

/* Tagline */
#pwa-splash .pwa-tag {
  margin-top: 2px;
  font: 500 .92rem/1.35 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  color: rgba(0,0,0,.55);
  letter-spacing: .2px;
}

/* Compact screens */
@media (max-width: 360px) {
  #pwa-splash .pwa-card { padding: 28px 20px 22px; gap: 18px; }
  #pwa-splash .pwa-logo { width: min(72vw, 220px); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  #pwa-splash, #pwa-splash .pwa-card { transition: none; animation: none; }
  #pwa-splash .pwa-spinner::after { animation: none; }
  #pwa-splash .pwa-bar { animation: none; background-position: 0 0; }
}