:root {
  --bg: #0b1020;
  --bg2: #111831;
  --card: #161e3a;
  --card2: #1b2447;
  --line: #26305c;
  --text: #e8ecff;
  --muted: #93a0c9;
  --accent: #5b7cfa;
  --accent2: #7c5bfa;
  --ok: #2dd4a7;
  --warn: #f5a623;
  --err: #ff5c7a;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", Tahoma, "Noto Sans Arabic", Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1a2350 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 26px;
  background: rgba(11, 16, 32, .85);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  font-size: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(91, 124, 250, .35);
}
.brand h1 { font-size: 20px; letter-spacing: .5px; }
.brand p { font-size: 12px; color: var(--muted); }

.steps { display: flex; gap: 8px; flex-wrap: wrap; }
.step {
  font-size: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  border: 1px solid var(--line);
  transition: .25s;
}
.step.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(91, 124, 250, .35);
}
.step.done { color: var(--ok); border-color: rgba(45, 212, 167, .4); }

main {
  flex: 1;
  width: min(1200px, 96vw);
  margin: 22px auto;
}

.panel { display: none; animation: fade .3s ease; }
.panel.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; } }

.btn {
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: 12px;
  transition: .2s;
  text-decoration: none;
  display: inline-block;
  color: var(--text);
}
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 8px 22px rgba(91, 124, 250, .35);
}
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(91, 124, 250, .45); }
.btn.primary:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn.ghost {
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--muted);
}
.btn.ghost:hover { color: var(--text); border-color: var(--accent); }
.btn.big { width: 100%; padding: 14px; font-size: 16px; margin-top: 14px; }

/* upload */
.dropzone {
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 60px 20px;
  text-align: center;
  cursor: pointer;
  transition: .25s;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--accent);
  background: var(--card2);
  box-shadow: 0 0 0 4px rgba(91, 124, 250, .12);
}
.dz-icon { font-size: 46px; margin-bottom: 12px; opacity: .8; }
.dz-inner h2 { font-size: 22px; margin-bottom: 8px; }
.dz-inner p { color: var(--muted); font-size: 14px; margin-bottom: 20px; }

.loading { display: flex; align-items: center; gap: 10px; justify-content: center; margin-top: 18px; color: var(--muted); }
.spinner {
  width: 18px; height: 18px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* crop */
.crop-layout { display: grid; grid-template-columns: 1fr 300px; gap: 16px; }
.canvas-wrap { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.canvas-toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.canvas-toolbar .btn { font-size: 13px; padding: 7px 12px; }
.zoom-label { font-size: 13px; color: var(--muted); min-width: 48px; text-align: center; }
.spacer { flex: 1; }
.lock-toggle { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); cursor: pointer; }
.lock-toggle input { accent-color: var(--accent); width: 16px; height: 16px; }
.ratio-label { font-size: 12px; color: var(--ok); background: rgba(45,212,167,.1); padding: 4px 8px; border-radius: 8px; }

.canvas-scroll {
  overflow: auto;
  max-height: 62vh;
  background:
    linear-gradient(45deg, #0e1430 25%, transparent 25%, transparent 75%, #0e1430 75%),
    linear-gradient(45deg, #0e1430 25%, #0b1020 25%, #0b1020 75%, #0e1430 75%);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  display: grid;
  place-items: center;
  padding: 14px;
}
#crop-canvas { display: block; cursor: crosshair; touch-action: none; }
.hint { font-size: 12px; color: var(--muted); padding: 10px 14px; border-top: 1px solid var(--line); }

.crop-side { display: flex; flex-direction: column; gap: 14px; }
.side-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.side-card h3 { font-size: 15px; margin-bottom: 12px; color: var(--text); }

.preview-box {
  background: #0b1020;
  border: 1px solid var(--line);
  border-radius: 10px;
  height: 170px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.preview-box img { max-width: 100%; max-height: 100%; object-fit: contain; }
.dims-readout { margin-top: 10px; font-size: 13px; color: var(--muted); text-align: center; font-variant-numeric: tabular-nums; }

/* dims */
.dims-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.field-row {
  display: grid;
  grid-template-columns: 90px 1fr 110px;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}
.field-row label { font-size: 13px; color: var(--muted); }
.field-row input, .field-row select {
  background: var(--bg2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 14px;
  width: 100%;
}
.field-row input:focus, .field-row select:focus { outline: none; border-color: var(--accent); }
.muted { color: var(--muted); font-size: 12px; }

#px-fields .field-row { grid-template-columns: 130px 1fr; }

.toggle-row { display: flex; align-items: center; gap: 10px; margin: 14px 0; font-size: 14px; }
.switch { position: relative; width: 44px; height: 24px; display: inline-block; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; inset: 0;
  background: var(--line);
  border-radius: 24px;
  transition: .25s;
  cursor: pointer;
}
.slider::before {
  content: "";
  position: absolute;
  width: 18px; height: 18px;
  right: 3px; top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: .25s;
}
.switch input:checked + .slider { background: var(--accent); }
.switch input:checked + .slider::before { transform: translateX(-20px); }

.calc-box {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  margin-top: 6px;
}
.calc-line {
  display: flex; justify-content: space-between;
  font-size: 14px; padding: 5px 0;
}
.calc-line b { color: var(--ok); font-variant-numeric: tabular-nums; }
.warning {
  margin-top: 8px; font-size: 13px;
  color: var(--warn);
  background: rgba(245, 166, 35, .1);
  border: 1px solid rgba(245, 166, 35, .35);
  padding: 8px 10px; border-radius: 8px;
}
.info {
  margin-top: 8px; font-size: 13px;
  color: var(--accent);
  background: rgba(91, 124, 250, .1);
  border: 1px solid rgba(91, 124, 250, .35);
  padding: 8px 10px; border-radius: 8px;
}

.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.card {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
  transition: .2s;
  position: relative;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card.selected {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(91,124,250,.18), rgba(124,91,250,.14));
  box-shadow: 0 0 0 3px rgba(91, 124, 250, .25);
}
.card .factor { font-size: 22px; font-weight: 800; }
.card .out { font-size: 12px; color: var(--muted); margin: 6px 0; font-variant-numeric: tabular-nums; direction: ltr; text-align: right; }
.card .row { font-size: 12px; color: var(--text); display: flex; justify-content: space-between; margin-top: 3px; }
.badge {
  position: absolute; top: 10px; left: 10px;
  font-size: 10px; font-weight: 700;
  padding: 3px 7px; border-radius: 999px;
}
.badge.pure { background: rgba(45, 212, 167, .15); color: var(--ok); border: 1px solid rgba(45,212,167,.4); }
.badge.mix { background: rgba(245, 166, 35, .15); color: var(--warn); border: 1px solid rgba(245,166,35,.4); }
.card .big-badge {
  position: static;
  display: inline-block;
  margin-bottom: 6px;
}
.card.target-card { border-color: rgba(124, 91, 250, .6); }

.format-row { display: flex; align-items: center; gap: 14px; margin-top: 16px; font-size: 14px; color: var(--muted); }
.format-row input { accent-color: var(--accent); }

.back-row { margin-top: 14px; }

/* process */
.process-box, .result-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  text-align: center;
}
.process-box h2 { font-size: 20px; margin-bottom: 22px; }
.progress-track {
  height: 16px;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--ok));
  background-size: 200% 100%;
  animation: shimmer 2.2s linear infinite;
  transition: width .6s ease;
  border-radius: 999px;
}
@keyframes shimmer { to { background-position: -200% 0; } }
.progress-meta {
  display: flex; justify-content: space-between;
  margin-top: 12px; font-size: 14px; color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.error {
  margin-top: 18px;
  color: var(--err);
  background: rgba(255, 92, 122, .1);
  border: 1px solid rgba(255, 92, 122, .4);
  padding: 12px;
  border-radius: 10px;
  font-size: 14px;
}

/* result */
.success-badge {
  display: inline-block;
  font-size: 16px; font-weight: 700;
  color: var(--ok);
  background: rgba(45, 212, 167, .12);
  border: 1px solid rgba(45, 212, 167, .4);
  padding: 10px 22px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.result-meta {
  display: flex; justify-content: center; gap: 18px;
  flex-wrap: wrap;
  font-size: 14px; color: var(--muted);
  margin-bottom: 18px;
  font-variant-numeric: tabular-nums;
}
.result-preview {
  background: #0b1020;
  border: 1px solid var(--line);
  border-radius: 12px;
  max-height: 46vh;
  overflow: auto;
  display: grid;
  place-items: center;
  padding: 10px;
}
.result-preview img { max-width: 100%; max-height: 44vh; object-fit: contain; }
.result-actions { display: flex; gap: 12px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.result-actions .btn.big { width: auto; margin-top: 0; padding: 14px 30px; }

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 18px;
  border-top: 1px solid var(--line);
  margin-top: 30px;
}

.hidden { display: none !important; }

@media (max-width: 900px) {
  .crop-layout, .dims-layout { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .steps { display: none; }
}