/* banner-eyelets — styl oparty na summa-cut "warsztat" */
:root {
  --ink:        #16202c;
  --ink-soft:   #4a5663;
  --ink-faint:  #8995a3;
  --paper:      #eef1f5;
  --surface:    #ffffff;
  --surface-2:  #f7f9fb;
  --line:       #d4dbe3;
  --line-soft:  #e4e9ef;
  --brand:      #1f9d6b;
  --brand-dark: #18815a;
  --accent:     #2563eb;
  --danger:     #c0362c;
  --radius:     10px;
  --radius-sm:  7px;
  --shadow:     0 1px 2px rgba(22,32,44,.05), 0 4px 14px rgba(22,32,44,.06);
  --ring:       0 0 0 3px rgba(37,99,235,.35);
  --mono: ui-monospace, "DejaVu Sans Mono", "SFMono-Regular", Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 14px/1.5 var(--sans);
  color: var(--ink);
  background: radial-gradient(1200px 600px at 100% -10%, #f4f7fb 0%, transparent 60%), var(--paper);
  min-height: 100vh;
}

/* Header */
header {
  padding: 14px 22px;
  background: linear-gradient(180deg, #1b2632 0%, #16202c 100%);
  color: #fff;
  border-bottom: 1px solid #0d141c;
}
header h1 {
  margin: 0; font-size: 18px; font-weight: 650; letter-spacing: -.01em;
  display: flex; align-items: baseline; gap: 10px;
}
header h1::before {
  content: ""; width: 9px; height: 18px; border-radius: 2px;
  background: var(--brand); align-self: center;
}
.muted { color: #93a1b1; font-size: 13px; font-weight: 400; }

/* Layout */
main {
  display: grid;
  grid-template-columns: minmax(320px, 360px) 1fr;
  gap: 18px; padding: 18px;
  align-items: start; max-width: 1400px; margin: 0 auto;
}

/* Cards (fieldset) */
fieldset {
  position: relative; margin: 0 0 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 14px 12px; background: var(--surface); box-shadow: var(--shadow);
}
fieldset::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(90deg, var(--line-soft), transparent 70%);
}
legend {
  font-weight: 650; font-size: 12px; letter-spacing: .04em;
  text-transform: uppercase; color: var(--ink-soft); padding: 0 6px; margin-left: -4px;
}

/* Rows */
.row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; padding: 3px 0;
}
.label { color: var(--ink-soft); flex: 1; min-width: 0; }
.val { font-family: var(--mono); font-size: 13px; color: var(--ink); }
.ro  { color: var(--ink-faint); }
.mono { font-family: var(--mono); font-size: 13px; }

/* Inputs */
input[type=number] {
  font: 13px/1 var(--mono); text-align: right; width: 74px;
  color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 6px 8px;
  transition: border-color .12s, box-shadow .12s;
}
input[type=number]:hover { border-color: #b9c3cf; }
input:focus-visible, button:focus-visible {
  outline: none; border-color: var(--accent); box-shadow: var(--ring);
}
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--brand); cursor: pointer; }
label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; color: var(--ink); }

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--line); border-radius: var(--radius);
  padding: 20px 16px; text-align: center; background: var(--surface-2);
  margin-bottom: 14px; transition: border-color .15s, background .15s;
}
.drop-zone.drag-over { border-color: var(--brand); background: #f0faf6; }
.drop-zone p { margin: 0 0 10px; color: var(--ink-soft); font-size: 13.5px; }

/* Buttons */
button {
  font: inherit; font-weight: 550; cursor: pointer;
  padding: 7px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink);
  transition: background .12s, border-color .12s, transform .04s;
}
button:hover { background: var(--surface-2); border-color: #b9c3cf; }
button:active { transform: translateY(1px); }

#generate-btn {
  width: 100%; margin-top: 2px;
  background: var(--brand); color: #fff; border-color: var(--brand-dark);
  font-weight: 650; padding: 10px 16px;
  box-shadow: 0 1px 0 rgba(0,0,0,.05), 0 6px 16px rgba(31,157,107,.22);
}
#generate-btn:hover { background: var(--brand-dark); }

#actions { margin-bottom: 14px; }

/* Points list */
.points-list {
  margin-top: 8px; max-height: 280px; overflow-y: auto;
  border-top: 1px solid var(--line-soft); padding-top: 8px;
}
.point-item {
  font-family: var(--mono); font-size: 12.5px; color: var(--ink-soft);
  padding: 2px 0;
}

/* Preview panel */
.preview { position: sticky; top: 18px; }
.preview-card { height: 100%; }
.preview-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 300px; background: var(--surface-2); border-radius: var(--radius-sm);
  border: 1px solid var(--line-soft);
}
#preview-img { max-width: 100%; max-height: 70vh; display: block; border-radius: var(--radius-sm); }
.placeholder { color: var(--ink-faint); font-size: 13px; text-align: center; padding: 40px; }

/* Responsive */
@media (max-width: 700px) {
  main { grid-template-columns: 1fr; }
  .preview { position: static; }
}