/* PRCH ONLINE — 3D Frame UI & Mobile Design System Enhancement */

:root {
  --frame-pad: clamp(12px, 2.5vw, 28px);
  --frame-border: 1px solid var(--line);
  --frame-bg: var(--paper);
  --frame-radius: 12px;
}

/* Outer viewport framing */
.app-frame {
  min-height: 100vh;
  padding: var(--frame-pad);
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--paper-raised) 70%, transparent) 0%, var(--paper) 100%);
  position: relative;
}

.frame-canvas-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

.frame-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  flex: 1;
  background: color-mix(in srgb, var(--paper) 95%, transparent);
  border: var(--frame-border);
  border-radius: var(--frame-radius);
  box-shadow: 
    0 1px 2px rgba(0,0,0,0.03),
    0 12px 32px -8px rgba(0,0,0,0.08),
    inset 0 1px 0 rgba(255,255,255,0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
}

/* 3D Interactive Seam & Emblem */
.seam-3d-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.orb-stage {
  width: 140px;
  height: 140px;
  perspective: 1000px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}

.orb-stage:active {
  cursor: grabbing;
}

.emblem-disc {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  position: relative;
  background: linear-gradient(135deg, #1f1d24, #121015);
  box-shadow: 
    0 0 0 1px rgba(255,255,255,0.15),
    0 16px 36px rgba(0,0,0,0.4),
    0 0 35px var(--ent-soft),
    0 0 45px var(--cult-soft);
  transform-style: preserve-3d;
  transition: transform 0.15s ease-out, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.emblem-disc img {
  width: 58px;
  height: 58px;
  object-fit: contain;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.6));
  pointer-events: none;
  transform: translateZ(24px);
}

.orb-ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px dashed color-mix(in srgb, var(--ink) 25%, transparent);
  animation: orbSpin 24s linear infinite;
  pointer-events: none;
}

@keyframes orbSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.seam-caption {
  margin-top: 0.85rem;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  padding: 0.35rem 1.1rem;
  backdrop-filter: blur(8px);
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.seam-caption .mark-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.seam-caption .mark-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  margin-top: 1px;
}

/* 3D Tilt Card Effect for Divisions */
.hero-half-3d {
  position: relative;
  perspective: 1200px;
  transform-style: preserve-3d;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(2rem, 5vw, 4.5rem);
  text-decoration: none;
  overflow: hidden;
  transition: background 0.3s ease;
}

.hero-half-3d .content-layer {
  position: relative;
  z-index: 3;
  transform: translateZ(30px);
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
}

.hero-half-3d:hover .content-layer {
  transform: translateZ(45px);
}

.hero-bg-art {
  position: absolute;
  top: 50%;
  transform: translateY(-50%) translateZ(0);
  opacity: 0.08;
  filter: grayscale(100%) contrast(150%);
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
  max-width: 480px;
  width: 70%;
  user-select: none;
}

.hero-ent .hero-bg-art {
  right: -5%;
}

.hero-cult .hero-bg-art {
  left: -5%;
}

.hero-half-3d:hover .hero-bg-art {
  opacity: 0.18;
  transform: translateY(-50%) translateZ(20px) scale(1.04);
}

/* Mobile optimizations */
@media (max-width: 860px) {
  :root {
    --frame-pad: 8px;
    --frame-radius: 8px;
  }
  
  .seam-3d-wrap {
    position: static;
    transform: none;
    margin: 1.5rem auto;
  }
  
  .hero-half-3d {
    min-height: 48vh;
    padding: 2.2rem 1.5rem;
  }
  
  .orb-stage {
    width: 100px;
    height: 100px;
  }
  
  .emblem-disc {
    width: 76px;
    height: 76px;
  }
  
  .emblem-disc img {
    width: 44px;
    height: 44px;
  }
}