/* =========================================================================
   SD FRAMEWORKS — FRAME VISUAL SYSTEM
   Real 3D picture-frame presentation: outer metallic edge, bevel, mat board,
   glass reflection sweep, and floating shadow. Reused across the hero,
   collection cards, custom-frame builder, and wall preview.
   ========================================================================= */

:root {
  --frame-edge-a: #e9ecf1;
  --frame-edge-b: #6b7280;
  --frame-edge-c: #2b2f36;
  --mat-color: #f4f1ea;
}

/* ---- Frame color variants (drive the outer metallic edge) ---- */
.frame-color-black { --frame-edge-a: #4a4f58; --frame-edge-b: #1c1f24; --frame-edge-c: #08090b; }
.frame-color-white  { --frame-edge-a: #ffffff; --frame-edge-b: #d7dbe1; --frame-edge-c: #a7acb5; }
.frame-color-brown  { --frame-edge-a: #a9764f; --frame-edge-b: #6b4327; --frame-edge-c: #3c2414; }
.frame-color-gold   { --frame-edge-a: #f4dfa0; --frame-edge-b: #c9a03f; --frame-edge-c: #7a5c1c; }
.frame-color-silver { --frame-edge-a: #f3f5f7; --frame-edge-b: #aab0ba; --frame-edge-c: #5b6270; }

/* ---- Frame style variants (drive the edge thickness/texture) ---- */
.frame-style-classic  .frame-outer-edge { padding: 26px; }
.frame-style-modern   .frame-outer-edge { padding: 12px; }
.frame-style-wooden   .frame-outer-edge {
  padding: 24px;
  background-image:
    repeating-linear-gradient(100deg, rgba(0,0,0,.08) 0 2px, transparent 2px 10px),
    linear-gradient(135deg, var(--frame-edge-a), var(--frame-edge-b) 55%, var(--frame-edge-c));
}
.frame-style-metallic .frame-outer-edge { padding: 18px; }
.frame-style-premium  .frame-outer-edge {
  padding: 22px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.15), 0 30px 70px rgba(0,0,0,.55);
}

/* ---- Core 3D frame construction ---- */
.frame-stage {
  perspective: 1600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.frame-3d {
  position: relative;
  width: 100%;
  max-width: 460px;
  transform-style: preserve-3d;
  transform: rotateX(6deg) rotateY(-10deg);
  transition: transform 0.5s cubic-bezier(.16,1,.3,1);
  will-change: transform;
}

.frame-outer-edge {
  padding: 20px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--frame-edge-a), var(--frame-edge-b) 55%, var(--frame-edge-c));
  box-shadow:
    0 40px 80px rgba(0,0,0,.5),
    0 8px 20px rgba(0,0,0,.4),
    inset 0 1px 1px rgba(255,255,255,.5),
    inset 0 -2px 6px rgba(0,0,0,.4);
  transition: box-shadow 0.4s ease;
}

.frame-bevel {
  padding: 5px;
  border-radius: 2px;
  background: linear-gradient(135deg, rgba(0,0,0,.35), rgba(255,255,255,.25));
  box-shadow: inset 0 2px 4px rgba(0,0,0,.5), inset 0 -1px 2px rgba(255,255,255,.2);
}

.frame-mat {
  padding: 22px;
  background: var(--mat-color);
  box-shadow: inset 0 0 12px rgba(0,0,0,.18);
}

.frame-photo-window {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: #0c0f14;
  box-shadow: inset 0 0 30px rgba(0,0,0,.5);
}

.frame-photo-window img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.frame-glass-sweep {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 38%, rgba(255,255,255,.22) 50%, transparent 62%);
  transform: translateX(-120%);
  opacity: 0;
}
.frame-3d.is-swept .frame-glass-sweep {
  animation: glassSweep 1.6s cubic-bezier(.16,1,.3,1) 0.4s 1;
}
@keyframes glassSweep {
  0% { transform: translateX(-120%); opacity: 0; }
  35% { opacity: .9; }
  100% { transform: translateX(120%); opacity: 0; }
}

.frame-shadow-el {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: -36px;
  height: 40px;
  background: radial-gradient(ellipse at center, rgba(0,0,0,.55), transparent 72%);
  filter: blur(6px);
  transform: translateZ(-40px) scale(1, 0.5);
  z-index: -1;
}

@media (prefers-reduced-motion: reduce) {
  .frame-3d { transition: none; }
  .frame-glass-sweep { display: none; }
}

/* ---- Framed media utility (product/gallery imagery gets a mat border) ---- */
.framed-media {
  position: relative;
  padding: 10px;
  background: linear-gradient(135deg, #dfe2e7, #8b909a 55%, #43474f);
  border-radius: 10px;
  box-shadow: 0 18px 40px rgba(0,0,0,.4);
}
.framed-media-inner {
  position: relative;
  overflow: hidden;
  background: var(--mat-color);
  padding: 8px;
  border-radius: 3px;
}
.framed-media-inner img { display: block; width: 100%; height: 100%; object-fit: cover; border-radius: 1px; }

/* ---- Frame Collection section ---- */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
@media (max-width: 1100px) { .collection-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .collection-grid { grid-template-columns: 1fr; } }

.collection-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/4;
  border: 1px solid var(--border);
  transition: transform 0.5s var(--ease-premium), box-shadow 0.5s var(--ease-premium);
}
.collection-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.8s var(--ease-premium), filter 0.5s ease;
}
.collection-card:hover { transform: translateY(-8px) perspective(800px) rotateX(2deg); box-shadow: 0 30px 60px rgba(0,0,0,.5); }
.collection-card:hover img { transform: scale(1.09); }
.collection-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(4,6,10,.92) 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 22px;
}
.collection-overlay .g-cat { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-300); margin-bottom: 6px; display: block; }
.collection-overlay h3 { font-size: 1.05rem; color: #fff; margin-bottom: 4px; }
.collection-overlay p { font-size: 12px; color: var(--text-2); max-height: 0; opacity: 0; overflow: hidden; transition: max-height 0.4s ease, opacity 0.4s ease; }
.collection-card:hover .collection-overlay p { max-height: 60px; opacity: 1; }
.collection-edge {
  position: absolute; inset: 0;
  border: 1px solid rgba(255,255,255,0);
  border-radius: inherit;
  transition: border-color 0.4s ease;
  pointer-events: none;
}
.collection-card:hover .collection-edge { border-color: rgba(79,195,255,.35); }

/* ---- Frame Showroom (cinematic wall) ---- */
.showroom {
  position: relative;
  padding: 60px 0 20px;
  overflow: hidden;
}
.showroom-wall {
  position: relative;
  min-height: 560px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(700px 400px at 50% 0%, rgba(47,107,255,.08), transparent 60%),
    linear-gradient(180deg, #f2f4f8, #e6e9ef);
  border: 1px solid var(--border);
  overflow: hidden;
}
.showroom-frame {
  position: absolute;
  width: 15%;
  min-width: 120px;
  border-radius: 4px;
  box-shadow: 0 30px 60px rgba(16,24,40,.22);
  transition: transform 0.2s ease-out;
  will-change: transform;
}
.showroom-frame img { width: 100%; display: block; border-radius: 2px; }
.showroom-frame.sf-1 { top: 12%; left: 10%; width: 16%; }
.showroom-frame.sf-2 { top: 8%; left: 40%; width: 13%; }
.showroom-frame.sf-3 { top: 18%; left: 70%; width: 17%; }
.showroom-frame.sf-4 { top: 46%; left: 22%; width: 14%; }
.showroom-frame.sf-5 { top: 50%; left: 55%; width: 19%; }
.showroom-frame.sf-6 { top: 42%; left: 82%; width: 12%; }
@media (max-width: 860px) {
  .showroom-wall { min-height: 420px; }
  .showroom-frame { width: 24% !important; }
}

/* ---- Wall Preview ---- */
.wall-preview {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16/9;
  background-size: cover;
  background-position: center;
}
.wall-preview-frame {
  position: absolute;
  top: 50%; left: 50%;
  width: 26%;
  transform: translate(-50%, -50%);
  box-shadow: 0 40px 70px rgba(0,0,0,.6);
  border-radius: 3px;
  transition: opacity 0.4s ease;
}
.wall-preview-frame img { width: 100%; display: block; border-radius: 2px; }
.wall-preview-picker { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.wall-swatch {
  width: 56px; height: 56px;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid var(--border-bright);
  cursor: pointer;
  opacity: .65;
  transition: opacity 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.wall-swatch img { width: 100%; height: 100%; object-fit: cover; }
.wall-swatch.is-active, .wall-swatch:hover { opacity: 1; border-color: var(--blue-400); transform: translateY(-3px); }

/* ---- Before / After slider ---- */
.ba-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  user-select: none;
  --pos: 50;
}
.ba-after, .ba-before { position: absolute; inset: 0; }
.ba-after img, .ba-before img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ba-before { clip-path: inset(0 calc(100% - var(--pos) * 1%) 0 0); }
.ba-label { position: absolute; top: 16px; font-size: 10px; letter-spacing: .1em; text-transform: uppercase; padding: 6px 12px; border-radius: var(--radius-pill); background: rgba(4,6,10,.6); color: #fff; backdrop-filter: blur(6px); }
.ba-label-before { left: 16px; }
.ba-label-after { right: 16px; }
.ba-handle-line {
  position: absolute; top: 0; bottom: 0;
  left: calc(var(--pos) * 1%);
  width: 2px;
  background: #fff;
  box-shadow: 0 0 12px rgba(0,0,0,.5);
  pointer-events: none;
  transform: translateX(-1px);
}
.ba-handle-btn {
  position: absolute; top: 50%; left: calc(var(--pos) * 1%);
  width: 44px; height: 44px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 8px 20px rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  color: #111;
  pointer-events: none;
  font-size: 14px;
}
.ba-range {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0;
  cursor: ew-resize;
  margin: 0;
}

/* ---- Custom Frame Builder ---- */
.builder-layout { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 60px; align-items: start; }
@media (max-width: 960px) { .builder-layout { grid-template-columns: 1fr; } }

.builder-preview { position: sticky; top: 110px; }
.builder-upload-zone {
  margin-top: 28px;
  border: 1px dashed var(--border-bright);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  color: var(--text-2);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.builder-upload-zone:hover { border-color: var(--blue-400); background: rgba(47,107,255,.04); }
.builder-upload-zone svg { color: var(--blue-300); margin-bottom: 10px; }
.builder-upload-zone input[type="file"] {
  position: absolute;
  width: 1px; height: 1px;
  opacity: 0;
  overflow: hidden;
}
.builder-upload-zone.has-file { border-color: var(--blue-400); color: var(--text-1); }

.swatch-group { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch-option { position: relative; }
.swatch-option input { position: absolute; opacity: 0; pointer-events: none; }
.swatch-pill {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-bright);
  font-size: 12px; color: var(--text-1);
  cursor: pointer;
  transition: all 0.2s ease;
}
.swatch-option input:checked + .swatch-pill {
  border-color: var(--blue-400);
  background: var(--blue-glow-soft);
  color: var(--blue-500);
  font-weight: 600;
}
.swatch-dot { width: 16px; height: 16px; border-radius: 50%; border: 1px solid rgba(16,24,40,.15); flex-shrink: 0; }
.swatch-dot.sw-black { background: #1c1f24; }
.swatch-dot.sw-white { background: #f2f4f7; }
.swatch-dot.sw-brown { background: #6b4327; }
.swatch-dot.sw-gold { background: linear-gradient(135deg,#f4dfa0,#c9a03f); }
.swatch-dot.sw-silver { background: linear-gradient(135deg,#f3f5f7,#aab0ba); }

.builder-field { margin-bottom: 26px; }
.builder-field h4 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-2); margin-bottom: 14px; }