:root {
  --bg: #06070e; --bg2: #0c0e1a; --glass: rgba(255,255,255,0.04);
  --glass-brd: rgba(255,255,255,0.09); --accent: #ffb02e; --accent2: #ffd479;
  --txt: #e8eef6; --txt-dim: #8b97ad;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Inter", system-ui, sans-serif;
  background:
    radial-gradient(1000px 600px at 85% -10%, rgba(255,95,210,0.12), transparent 60%),
    radial-gradient(900px 600px at 0% 110%, rgba(95,227,255,0.10), transparent 55%),
    linear-gradient(180deg, var(--bg2), var(--bg));
  color: var(--txt); min-height: 100vh;
}
header { display: flex; align-items: baseline; gap: 14px; padding: 22px 32px 8px; justify-content: space-between; }
.langsw { display: flex; gap: 4px; align-self: center; }
.langbtn { padding: 5px 10px; font-size: 12px; font-weight: 600; letter-spacing: .5px; color: var(--txt-dim); background: rgba(255,255,255,0.05); border: 1px solid var(--glass-brd); border-radius: 8px; cursor: pointer; transition: .15s; }
.langbtn:hover { color: var(--txt); }
.langbtn.active { color: #04130a; background: var(--accent); border-color: var(--accent); }
header h1 {
  font-weight: 700; font-size: 24px; letter-spacing: 0.5px;
  background: linear-gradient(90deg, #fff, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
header .sub { color: var(--txt-dim); font-size: 13px; letter-spacing: 1.2px; text-transform: uppercase; }
.layout { display: grid; grid-template-columns: 360px 1fr; gap: 24px; padding: 12px 32px 40px; align-items: start; }
@media (max-width: 920px) { .layout { grid-template-columns: 1fr; } }
.panel {
  background: var(--glass); border: 1px solid var(--glass-brd); border-radius: 18px; padding: 20px;
  backdrop-filter: blur(14px); box-shadow: 0 12px 40px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
}
.controls { max-height: calc(100vh - 90px); overflow-y: auto; }
.controls::-webkit-scrollbar { width: 8px; } .controls::-webkit-scrollbar-thumb { background: var(--glass-brd); border-radius: 4px; }

.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 14px; }
.ptab {
  padding: 11px 8px; font-size: 13px; cursor: pointer; background: rgba(0,0,0,0.25); color: var(--txt-dim);
  border: 1px solid var(--glass-brd); border-radius: 10px; transition: all 0.15s;
}
.ptab.active { background: linear-gradient(135deg, rgba(255,95,210,0.25), rgba(95,227,255,0.12)); color: #fff; border-color: rgba(255,95,210,0.4); }
.itab { padding: 9px 8px; font-size: 13px; cursor: pointer; background: rgba(0,0,0,0.25); color: var(--txt-dim); border: 1px solid var(--glass-brd); border-radius: 10px; transition: all 0.15s; }
.itab.active { background: rgba(95,227,255,0.14); color: #fff; border-color: rgba(95,227,255,0.35); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { padding: 6px 12px; font-size: 12px; cursor: pointer; background: var(--glass); color: var(--txt-dim); border: 1px solid var(--glass-brd); border-radius: 20px; }
.chip:hover { color: #fff; border-color: var(--accent); }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12px; color: var(--txt-dim); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.4px; }
.field textarea, .field select, .field input[type=text] {
  width: 100%; padding: 10px 12px; font-size: 14px; background: rgba(0,0,0,0.25); color: var(--txt);
  border: 1px solid var(--glass-brd); border-radius: 10px; outline: none; font-family: inherit; resize: vertical;
}
.field textarea:focus, .field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,95,210,0.12); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.slider-head { display: flex; justify-content: space-between; align-items: baseline; }
.slider-head .val { color: var(--accent); font-size: 13px; font-weight: 600; }

.colors { display: flex; flex-wrap: wrap; gap: 9px; }
.color-dot { width: 30px; height: 30px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; transition: transform 0.12s; }
.color-dot:hover { transform: scale(1.12); }
.color-dot.active { border-color: #fff; transform: scale(1.15); }

.toggle { display: flex; align-items: center; gap: 10px; cursor: pointer; margin-bottom: 12px; }
.toggle input { width: 18px; height: 18px; accent-color: var(--accent); }
.toggle span { font-size: 13px; }
.toggle.mini span { font-size: 12px; color: var(--txt-dim); }

.divider { height: 1px; background: var(--glass-brd); margin: 16px 0; }

.pricing { background: rgba(0,0,0,0.2); border: 1px solid var(--glass-brd); border-radius: 12px; padding: 14px; }
.pricing-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.pricing-head > span:first-child { font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--txt-dim); }
.rt { font-size: 11px; color: var(--accent2); }
.breakdown { font-size: 12px; color: var(--txt-dim); display: grid; gap: 4px; }
.breakdown > div { display: flex; justify-content: space-between; }
.price-total { display: flex; justify-content: space-between; align-items: baseline; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--glass-brd); }
.price-total span { font-size: 13px; color: var(--txt-dim); }
.price-total b { font-size: 26px; color: var(--accent); font-weight: 700; }

.btns { display: grid; gap: 10px; }
button.act { padding: 12px; border: none; border-radius: 11px; cursor: pointer; font-size: 14px; font-weight: 600; transition: transform 0.1s; }
button.primary { background: linear-gradient(135deg, var(--accent), #ff8a2b); color: #1a0512; box-shadow: 0 6px 20px rgba(255,95,210,0.3); }
button.ghost { background: var(--glass); color: var(--txt); border: 1px solid var(--glass-brd); }
button.act:hover { transform: translateY(-1px); }
.note { font-size: 11px; color: var(--txt-dim); line-height: 1.5; margin-top: 10px; }

.stage { position: relative; display: flex; align-items: center; justify-content: center; min-height: 72vh; border-radius: 22px; overflow: hidden; }
#preview { width: 100%; height: auto; border-radius: 14px; }
.stage-top { position: absolute; top: 14px; right: 16px; z-index: 3; display: flex; gap: 16px; background: rgba(0,0,0,0.35); padding: 6px 14px; border-radius: 20px; border: 1px solid var(--glass-brd); backdrop-filter: blur(8px); }
.stage-top .toggle { margin: 0; }

/* walidacja produkcyjna */
.warnings { display: grid; gap: 5px; font-size: 12px; margin: 4px 0; }
.warnings > div { color: #ffcf7a; background: rgba(255,180,60,0.08); border: 1px solid rgba(255,180,60,0.2); border-radius: 8px; padding: 7px 10px; line-height: 1.4; }
.warnings.ok > div { color: #7dffb0; background: rgba(95,255,160,0.07); border-color: rgba(95,255,160,0.2); }

/* modal formularza */
.modal { position: fixed; inset: 0; z-index: 100; background: rgba(3,5,12,0.78); backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal-box { background: linear-gradient(180deg, #141828, #0c0e1a); border: 1px solid var(--glass-brd); border-radius: 18px; padding: 26px; width: 100%; max-width: 420px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.modal-box h3 { font-size: 19px; margin-bottom: 8px; color: #fff; }
.modal-box input, .modal-box textarea { width: 100%; margin-top: 10px; padding: 11px 13px; font-size: 14px; background: rgba(0,0,0,0.3); color: var(--txt); border: 1px solid var(--glass-brd); border-radius: 10px; font-family: inherit; outline: none; }
.modal-box input:focus, .modal-box textarea:focus { border-color: var(--accent); }
.modal-box .btns { margin-top: 16px; grid-template-columns: 1fr 1fr; display: grid; gap: 10px; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; max-height: 60vh; overflow-y: auto; margin-top: 12px; }
@media (max-width: 600px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
.gcard { cursor: pointer; }
.gcard canvas { width: 100%; border-radius: 8px; border: 1px solid var(--glass-brd); transition: transform 0.1s, border-color 0.1s; background: #06070e; display: block; }
.gcard:hover canvas { transform: scale(1.04); border-color: var(--accent); }
.gcap { font-size: 11px; color: var(--txt-dim); text-align: center; margin-top: 4px; }

/* porównanie 2 wariantów liter (B4) */
.cmp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 12px; }
@media (max-width: 760px) { .cmp-grid { grid-template-columns: 1fr; } }
.cmp-col { display: flex; flex-direction: column; gap: 8px; }
.cmp-col select { padding: 9px 11px; font-size: 13px; background: rgba(0,0,0,0.3); color: var(--txt); border: 1px solid var(--glass-brd); border-radius: 9px; }
.cmp-col canvas { width: 100%; border-radius: 10px; border: 1px solid var(--glass-brd); background: #06070e; display: block; }
.cmp-price { font-size: 18px; font-weight: 700; color: var(--accent); text-align: center; }
.cmp-price small { display: block; font-size: 11px; font-weight: 400; color: var(--txt-dim); }

/* kafelki wykończenia liter z mini-podglądem */
.lettertiles { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.lettertile { display: flex; flex-direction: column; align-items: stretch; gap: 5px; padding: 6px; background: rgba(255,255,255,0.04); border: 1.5px solid var(--glass-brd); border-radius: 10px; cursor: pointer; transition: .15s; }
.lettertile:hover { border-color: rgba(255,255,255,0.25); }
.lettertile.active { border-color: var(--accent); background: rgba(255,176,46,0.12); }
.lettertile canvas { width: 100%; height: 50px; border-radius: 6px; display: block; }
.lettertile .lt-lab { font-size: 11px; color: var(--txt-dim); text-align: center; line-height: 1.2; }
.lettertile.active .lt-lab { color: var(--txt); }