/* =========================================================
   Frame Builder — dark OPP theme
   ========================================================= */

.builder-page { background: var(--bg); }

.builder-hero {
  padding: clamp(50px, 7vw, 90px) 0 clamp(30px, 4vw, 50px);
}
.builder-hero .lede { margin-top: 1.2rem; max-width: 60ch; }

.builder {
  padding: 0 var(--gutter) 200px;
  max-width: 1480px;
  margin: 0 auto;
}
.builder__grid {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: 40px;
  align-items: start;
}

/* ---------- Preview ---------- */
.builder__preview {
  position: sticky;
  top: 90px;
}
.preview-wrap {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 28px;
  border-radius: var(--radius-lg);
}
.preview-room {
  aspect-ratio: 4/3.2;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  transition: background 0.4s ease;
}
.preview-room[data-bg="cream"] { background: #ebe2cf; }
.preview-room[data-bg="green"] { background: #4a5840; }
.preview-room[data-bg="navy"]  { background: #2a3548; }
.preview-room[data-bg="white"] { background: #f5f1e8; }
.preview-room[data-bg="dark"]  { background: #1a1612; }

.preview-room__light {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(255,255,240,0.35), transparent 50%);
  pointer-events: none;
}

.preview-frame {
  position: relative;
  max-width: 78%;
  max-height: 82%;
  transition: all 0.45s cubic-bezier(.2,.8,.2,1);
}
.preview-frame__moulding {
  position: relative;
  padding: 22px;
  background: linear-gradient(135deg, #6b4326, #4a2d18);
  box-shadow:
    0 22px 50px rgba(0,0,0,0.5),
    inset 0 1px 0 rgba(255,255,255,0.1),
    inset 0 -1px 0 rgba(0,0,0,0.3);
  transition: padding 0.4s, background 0.4s;
}
.preview-frame__mat {
  position: relative;
  padding: 30px;
  background: #f0e8d4;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.06), inset 0 2px 8px rgba(0,0,0,0.06);
  transition: padding 0.3s, background 0.3s;
}
.preview-frame__glass {
  position: relative;
  overflow: hidden;
}
.preview-frame__glass::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg,
    rgba(255,255,255,0) 0%,
    rgba(255,255,255,0) 35%,
    rgba(255,255,255,0.18) 40%,
    rgba(255,255,255,0) 48%,
    rgba(255,255,255,0) 100%);
  pointer-events: none;
  z-index: 2;
  opacity: 1;
  transition: opacity 0.3s;
}
.preview-frame__glass[data-glass="museum"]::before { opacity: 0.18; }
.preview-frame__glass[data-glass="uv"]::before { opacity: 0.6; }
.preview-frame__glass[data-glass="standard"]::before { opacity: 1; }

.preview-frame__art {
  width: 100%;
  aspect-ratio: 4/5;
  background: linear-gradient(180deg, #8aa07a 0%, #5a6a3e 60%, #3d4a2a 100%);
  transition: aspect-ratio 0.4s;
}

/* Art variations */
.preview-frame__art[data-art="landscape"] {
  background:
    radial-gradient(ellipse at 30% 30%, #f0d9a8 0%, transparent 35%),
    linear-gradient(180deg, #c4d4dc 0%, #c4d4dc 45%, #8aa07a 46%, #5a6a3e 75%, #3d4a2a 100%);
}
.preview-frame__art[data-art="portrait"] {
  background:
    radial-gradient(circle at 50% 35%, #e8c89a 0%, #b88860 25%, transparent 35%),
    linear-gradient(180deg, #5a4838 0%, #2a201a 100%);
}
.preview-frame__art[data-art="abstract"] {
  background:
    radial-gradient(circle at 25% 30%, var(--opp-amber), transparent 45%),
    radial-gradient(circle at 70% 65%, var(--opp-magenta), transparent 50%),
    radial-gradient(circle at 50% 50%, var(--opp-violet), transparent 60%),
    linear-gradient(135deg, var(--opp-blue), var(--opp-coral));
}
.preview-frame__art[data-art="bw"] {
  background: radial-gradient(ellipse at 50% 40%, #d4d0c8 0%, #6a6660 40%, #2a2825 100%);
}
.preview-frame__art[data-art="botanical"] {
  background:
    radial-gradient(circle at 50% 60%, #6a8050 0%, #4a5838 30%, transparent 50%),
    linear-gradient(180deg, #f0ead6 0%, #e3d6bd 100%);
}
.preview-frame__art[data-art="document"] {
  background: linear-gradient(180deg, #faf3e0, #ebe2cf);
  position: relative;
}
.preview-frame__art[data-art="document"]::after {
  content: "";
  position: absolute;
  left: 20%; right: 20%; top: 30%; bottom: 30%;
  background:
    linear-gradient(180deg, #4a3c30 0 1px, transparent 1px 8px) repeat-y;
  background-size: 100% 8px;
  opacity: 0.4;
}

.preview-frame__shadow {
  position: absolute;
  left: 6%; right: 6%; bottom: -18px;
  height: 30px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.5), transparent 70%);
  filter: blur(10px);
  z-index: -1;
}

.preview-scale {
  position: absolute;
  bottom: 18px; right: 18px;
  background: rgba(7, 8, 11, 0.85);
  color: #F5F6FA;
  padding: 6px 12px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  font-family: var(--mono), var(--sans);
  text-transform: uppercase;
  backdrop-filter: blur(4px);
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.2);
}

.preview-tools {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  align-items: center;
  justify-content: center;
}
.preview-tools__label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-family: var(--mono), var(--sans);
  margin-right: 4px;
}
.tool-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 50%;
  padding: 4px;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
}
.tool-btn:hover { transform: scale(1.1); border-color: var(--border-strong); }
.tool-btn.active {
  border-color: var(--opp-coral);
  border-width: 2px;
}
.tool-dot {
  display: block;
  width: 100%; height: 100%;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.1);
}

/* ---------- Controls ---------- */
.builder__controls {
  display: grid;
  gap: 16px;
}
.control {
  padding: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.control__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 1.25rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
}
.control__num {
  font-family: var(--mono), var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--opp-coral);
  font-weight: 500;
}
.control h2 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.hint {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 0.6rem;
  font-style: italic;
}

/* ---------- Upload zone ---------- */
.upload-zone {
  border: 2px dashed var(--border-strong);
  background: var(--surface);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s;
  position: relative;
  border-radius: var(--radius);
}
.upload-zone:hover {
  border-color: var(--opp-coral);
  background: var(--bg-hover);
}
.upload-zone--dragging {
  border-color: var(--opp-coral);
  border-style: solid;
  background: rgba(242, 106, 46, 0.06);
  transform: scale(1.01);
}
.upload-zone--filled {
  text-align: left;
  padding: 14px;
  cursor: default;
  border-style: solid;
  border-color: var(--border);
}
.upload-zone--filled:hover { background: var(--surface); }
.upload-zone__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-dim);
}
.upload-zone__inner svg { color: var(--opp-coral); }
.upload-zone__inner strong {
  display: block;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 2px;
}
.upload-zone__inner span {
  font-size: 0.82rem;
  color: var(--text-faint);
}

.upload-zone__preview {
  display: flex;
  align-items: center;
  gap: 16px;
}
.upload-zone__preview.hidden { display: none; }
.upload-zone__inner.hidden { display: none; }
.upload-zone__preview img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border: 1px solid var(--border-strong);
  flex-shrink: 0;
  border-radius: 4px;
}
.upload-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.upload-info strong {
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.upload-info span {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-bottom: 4px;
  font-family: var(--mono), var(--sans);
}
.upload-info .link-arrow {
  font-size: 0.82rem;
  align-self: flex-start;
  color: var(--opp-coral);
  border-color: var(--opp-coral);
  background: transparent;
  border-style: solid;
  border-width: 0 0 1px 0;
  padding: 0 0 2px;
  cursor: pointer;
}

.upload-warning {
  margin-top: 12px;
  padding: 10px 14px;
  background: rgba(242, 106, 46, 0.08);
  border-left: 3px solid var(--opp-coral);
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.45;
  border-radius: 0 4px 4px 0;
}
.upload-warning.hidden { display: none; }

.upload-fallback { margin-top: 14px; }
.upload-fallback summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-faint);
  padding: 6px 0;
  font-style: italic;
  user-select: none;
}
.upload-fallback summary:hover { color: var(--opp-coral); }
.upload-fallback[open] summary { margin-bottom: 12px; }

/* ---------- Print medium options ---------- */
.print-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.print-option {
  cursor: pointer;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 14px;
  text-align: left;
  transition: all 0.2s;
  font-family: var(--sans);
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text);
  border-radius: 4px;
}
.print-option:hover {
  border-color: var(--opp-coral);
  transform: translateY(-1px);
}
.print-option.active {
  border-color: var(--opp-coral);
  border-width: 2px;
  padding: 13px;
  background: rgba(242, 106, 46, 0.06);
}
.print-option__name {
  font-size: 0.95rem;
  font-weight: 500;
}
.print-option__desc {
  font-size: 0.78rem;
  color: var(--text-faint);
}
.print-option__price {
  font-family: var(--mono), var(--sans);
  color: var(--opp-coral);
  font-size: 0.82rem;
  margin-top: 4px;
}

/* ---------- Uploaded image inside preview ---------- */
.preview-frame__art--uploaded { background: var(--bg-elevated) !important; }
.preview-frame__art--uploaded::after { display: none; }
.preview-frame__art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- Size ---------- */
.size-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.size-tab {
  flex: 1;
  padding: 10px 14px;
  background: transparent;
  border: none;
  font-family: var(--sans);
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-dim);
  transition: all 0.2s;
}
.size-tab.active {
  background: var(--text);
  color: var(--ink);
}
.size-pane.hidden { display: none; }
.size-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.size-chip {
  padding: 10px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--sans);
  font-size: 0.84rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-dim);
  transition: all 0.2s;
  border-radius: 4px;
}
.size-chip:hover {
  border-color: var(--opp-coral);
  color: var(--text);
}
.size-chip.active {
  background: var(--text);
  color: var(--ink);
  border-color: var(--text);
}
.size-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.size-inputs label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--mono), var(--sans);
}
.size-inputs input {
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-family: var(--sans);
  font-size: 1.1rem;
  text-transform: none;
  color: var(--text);
  border-radius: 4px;
}
.size-inputs input:focus { outline: none; border-color: var(--opp-coral); }

/* ---------- Frame options ---------- */
.frame-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.frame-option {
  cursor: pointer;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 14px;
  text-align: left;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--sans);
  color: var(--text);
  border-radius: 4px;
}
.frame-option:hover {
  border-color: var(--opp-coral);
  transform: translateY(-1px);
}
.frame-option.active {
  border-color: var(--opp-coral);
  border-width: 2px;
  padding: 13px;
  background: rgba(242, 106, 46, 0.06);
}
.frame-option__swatch {
  width: 36px; height: 36px;
  flex-shrink: 0;
  border: 1px solid rgba(0,0,0,0.3);
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
  border-radius: 2px;
}
.frame-option__info { flex: 1; min-width: 0; }
.frame-option__name {
  font-size: 0.92rem;
  font-weight: 500;
  display: block;
  margin-bottom: 2px;
}
.frame-option__desc {
  font-size: 0.76rem;
  color: var(--text-faint);
  display: block;
}

/* ---------- Mat ---------- */
.mat-toggle {
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px dashed var(--border);
}
.switch {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
}
.switch input { cursor: pointer; accent-color: var(--opp-coral); }

.mat-width-control {
  margin-top: 1rem;
  transition: opacity 0.2s, max-height 0.2s;
}
.mat-width-control.hidden {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  margin-top: 0;
}
.mat-width-control label {
  display: block;
  font-size: 0.84rem;
  color: var(--text-dim);
  font-weight: 500;
}
.mat-width-control input[type="range"] {
  width: 100%;
  margin-top: 8px;
  accent-color: var(--opp-coral);
}

.mat-options {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}
.mat-option {
  aspect-ratio: 1;
  cursor: pointer;
  border: 1px solid var(--border-strong);
  position: relative;
  transition: transform 0.2s, border-color 0.2s;
  border-radius: 3px;
}
.mat-option:hover { transform: scale(1.08); }
.mat-option.active {
  border-color: var(--text);
  border-width: 2px;
  box-shadow: 0 0 0 2px var(--bg-elevated), 0 0 0 4px var(--opp-coral);
}
.mat-option__name {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--text-dim);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}
.mat-option:hover .mat-option__name { opacity: 1; }

/* ---------- Glass ---------- */
.glass-options {
  display: grid;
  gap: 10px;
}
.glass-option {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  text-align: left;
  font-family: var(--sans);
  color: var(--text);
  transition: all 0.2s;
  border-radius: 4px;
}
.glass-option:hover { border-color: var(--opp-coral); }
.glass-option.active {
  border-color: var(--opp-coral);
  border-width: 2px;
  padding: 13px;
  background: rgba(242, 106, 46, 0.06);
}
.glass-option__radio {
  width: 18px; height: 18px;
  border: 1.5px solid var(--text-dim);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
}
.glass-option.active .glass-option__radio {
  border-color: var(--opp-coral);
}
.glass-option.active .glass-option__radio::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--opp-coral);
  border-radius: 50%;
}
.glass-option__info { flex: 1; }
.glass-option__name {
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 2px;
  display: block;
}
.glass-option__desc {
  font-size: 0.8rem;
  color: var(--text-faint);
  line-height: 1.4;
}
.glass-option__price {
  font-family: var(--mono), var(--sans);
  color: var(--opp-coral);
  font-size: 0.86rem;
  white-space: nowrap;
}

/* ---------- Art chips ---------- */
.art-options {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}
.art-chip {
  aspect-ratio: 4/5;
  border: 1px solid var(--border-strong);
  cursor: pointer;
  background-size: cover;
  background-position: center;
  transition: transform 0.2s, border-color 0.2s;
  border-radius: 3px;
}
.art-chip:hover { transform: scale(1.06); }
.art-chip.active {
  border-color: var(--opp-coral);
  border-width: 2px;
}
.art-chip[data-art="landscape"] {
  background:
    radial-gradient(ellipse at 30% 30%, #f0d9a8 0%, transparent 35%),
    linear-gradient(180deg, #c4d4dc 0%, #c4d4dc 45%, #8aa07a 46%, #5a6a3e 75%, #3d4a2a 100%);
}
.art-chip[data-art="portrait"] {
  background:
    radial-gradient(circle at 50% 35%, #e8c89a 0%, #b88860 25%, transparent 35%),
    linear-gradient(180deg, #5a4838 0%, #2a201a 100%);
}
.art-chip[data-art="abstract"] {
  background:
    radial-gradient(circle at 25% 30%, var(--opp-amber), transparent 45%),
    radial-gradient(circle at 70% 65%, var(--opp-magenta), transparent 50%),
    linear-gradient(135deg, var(--opp-blue), var(--opp-coral));
}
.art-chip[data-art="bw"] {
  background: radial-gradient(ellipse at 50% 40%, #d4d0c8 0%, #6a6660 40%, #2a2825 100%);
}
.art-chip[data-art="botanical"] {
  background:
    radial-gradient(circle at 50% 60%, #6a8050 0%, #4a5838 30%, transparent 50%),
    linear-gradient(180deg, #f0ead6 0%, #e3d6bd 100%);
}
.art-chip[data-art="document"] {
  background: linear-gradient(180deg, #faf3e0, #ebe2cf);
}

/* ---------- Sticky summary ---------- */
.summary {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--bg);
  color: var(--text);
  border-top: 1px solid var(--border-strong);
  z-index: 40;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.summary::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--opp-gradient-edge);
  opacity: 0.4;
}
.summary__inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 30px;
  align-items: center;
}
.summary__label {
  display: block;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 3px;
  font-family: var(--mono), var(--sans);
}
.summary__details strong {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
}
.summary__price strong {
  font-family: var(--sans);
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  background: var(--opp-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.summary__actions { display: flex; gap: 10px; }

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal.open { display: flex; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
}
.modal__card {
  position: relative;
  z-index: 2;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  padding: 40px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius-lg);
}
.modal__close {
  position: absolute;
  top: 14px; right: 18px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-dim);
  line-height: 1;
}
.modal__close:hover { color: var(--text); }
.modal__form {
  display: grid;
  gap: 14px;
  margin-top: 1.5rem;
}
.modal__form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--mono), var(--sans);
}
.modal__form input,
.modal__form textarea {
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-family: var(--sans);
  font-size: 0.95rem;
  text-transform: none;
  color: var(--text);
  border-radius: 4px;
}
.modal__form input:focus,
.modal__form textarea:focus { outline: none; border-color: var(--opp-coral); }
.modal__form button { margin-top: 0.5rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .builder__grid { grid-template-columns: 1fr; }
  .builder__preview {
    position: static;
    margin-bottom: 30px;
  }
  .preview-room { aspect-ratio: 4/2.6; }
}
@media (max-width: 720px) {
  .builder { padding-bottom: 260px; }
  .size-grid { grid-template-columns: repeat(3, 1fr); }
  .frame-options, .print-options { grid-template-columns: 1fr; }
  .mat-options, .art-options { grid-template-columns: repeat(5, 1fr); }
  .summary__inner {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 14px var(--gutter);
  }
  .summary__actions { width: 100%; }
  .summary__actions .btn { flex: 1; }
  .modal__card { padding: 28px 22px; }
}