/* ============================================================
   QR Studio — кастомный стиль поверх Bootstrap 5
   Эстетика: refined studio, фирменный градиент violet→teal,
   мягкие панели, аккуратные контролы, авто тёмная/светлая тема.
   ============================================================ */

:root {
  --grad: linear-gradient(135deg, #6d5efc 0%, #8b5cf6 40%, #11d3bc 100%);
  --grad-soft: linear-gradient(135deg, rgba(109,94,252,.14), rgba(17,211,188,.14));
  --accent: #6d5efc;
  --accent-2: #11d3bc;

  --bg: #f4f4f8;
  --bg-2: #ffffff;
  --panel: #ffffff;
  --panel-2: #fafafc;
  --ink: #14141a;
  --ink-soft: #5c5c6b;
  --line: #e7e7ee;
  --line-strong: #d7d7e2;
  --shadow: 0 1px 2px rgba(20,20,40,.04), 0 8px 24px rgba(20,20,40,.06);
  --shadow-lg: 0 12px 40px rgba(20,20,40,.12);
  --radius: 20px;
  --radius-sm: 12px;

  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
}

[data-bs-theme="dark"] {
  --bg: #0c0c11;
  --bg-2: #131319;
  --panel: #15151c;
  --panel-2: #1b1b23;
  --ink: #f1f1f5;
  --ink-soft: #9a9aab;
  --line: #26262f;
  --line-strong: #33333f;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  --shadow-lg: 0 16px 50px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }

body {
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(109,94,252,.10), transparent 60%),
    radial-gradient(1000px 500px at -10% 10%, rgba(17,211,188,.08), transparent 55%),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(109,94,252,.25); }

/* ---------------- ВЕРХНЯЯ ПАНЕЛЬ ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-size: 19px;
  box-shadow: 0 6px 18px rgba(109,94,252,.4);
}
.brand-text { font-family: var(--font-display); font-weight: 600; font-size: 20px; letter-spacing: -.02em; }
.brand-text b { font-weight: 800; }
.tagline { color: var(--ink-soft); font-size: 14px; }

.icon-btn {
  width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); display: inline-grid; place-items: center;
  font-size: 17px; cursor: pointer; transition: .18s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }

/* Сегментный переключатель */
.seg { display: inline-flex; gap: 4px; padding: 4px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; }
.seg-btn {
  border: 0; background: transparent; color: var(--ink-soft); font-weight: 600; font-size: 13px;
  padding: 7px 13px; border-radius: 9px; cursor: pointer; text-decoration: none; transition: .16s;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.active { background: var(--bg-2); color: var(--ink); box-shadow: var(--shadow); }
#styleSeg .seg-btn.active { background: var(--grad); color: #fff; }

/* ---------------- ПАНЕЛИ ---------------- */
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
  animation: rise .5s cubic-bezier(.2,.7,.2,1) both;
}
.col-lg-7 .panel:nth-child(2) { animation-delay: .06s; }
.col-lg-5 .panel { animation-delay: .1s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.panel-head {
  font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: -.01em;
  display: flex; align-items: center; gap: 9px; margin-bottom: 16px; color: var(--ink);
}
.panel-head i { color: var(--accent); }

.micro {
  display: block; font-size: 11.5px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .07em; color: var(--ink-soft); margin-bottom: 7px;
}
.micro b { color: var(--accent); font-weight: 700; }

/* ---------------- ТИП КОНТЕНТА ---------------- */
.type-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px; }
.type-chip {
  border: 1px solid var(--line); background: var(--panel-2); color: var(--ink-soft);
  border-radius: 14px; padding: 13px 6px; cursor: pointer; transition: .18s;
  display: flex; flex-direction: column; align-items: center; gap: 6px; font-weight: 600; font-size: 12.5px;
}
.type-chip i { font-size: 20px; }
.type-chip:hover { border-color: var(--line-strong); color: var(--ink); transform: translateY(-2px); }
.type-chip.active {
  border-color: transparent; color: #fff; background: var(--grad);
  box-shadow: 0 8px 22px rgba(109,94,252,.32);
}

/* ---------------- ФОРМЫ ---------------- */
.form-control, .form-select {
  background: var(--panel-2); border: 1px solid var(--line); color: var(--ink);
  border-radius: var(--radius-sm); padding: 11px 14px; font-size: 14.5px; transition: .16s;
}
.form-control::placeholder { color: var(--ink-soft); opacity: .7; }
.form-control:focus, .form-select:focus {
  background: var(--bg-2); border-color: var(--accent); color: var(--ink);
  box-shadow: 0 0 0 4px rgba(109,94,252,.14);
}
.form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }
.form-check-input:focus { box-shadow: 0 0 0 4px rgba(109,94,252,.14); border-color: var(--accent); }

/* Диапазоны */
.form-range { height: 1.6rem; }
.form-range::-webkit-slider-thumb { background: var(--accent); box-shadow: 0 2px 8px rgba(109,94,252,.5); }
.form-range::-webkit-slider-thumb:active { background: var(--accent-2); }
.form-range::-moz-range-thumb { background: var(--accent); border: 0; }
.form-range::-webkit-slider-runnable-track { background: var(--line-strong); border-radius: 10px; height: 5px; }
.form-range::-moz-range-track { background: var(--line-strong); border-radius: 10px; height: 5px; }

/* ---------------- ЦВЕТА ---------------- */
.color-field {
  display: flex; align-items: center; gap: 10px; background: var(--panel-2);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 6px 12px 6px 6px;
}
.color-field.sm { justify-content: center; padding: 6px; }
.color-field input[type="color"] {
  width: 36px; height: 36px; border: 0; border-radius: 9px; padding: 0; cursor: pointer; background: none;
}
.color-field input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-field input[type="color"]::-webkit-color-swatch { border: 1px solid var(--line-strong); border-radius: 9px; }
.color-field input[type="color"]::-moz-color-swatch { border: 1px solid var(--line-strong); border-radius: 9px; }
.hexval { font-family: ui-monospace, monospace; font-size: 13px; color: var(--ink-soft); text-transform: uppercase; }

.grad-box {
  background: var(--panel-2); border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm); padding: 14px;
}

/* Пресеты */
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; }
.preset {
  border: 1px solid var(--line); background: var(--panel-2); color: var(--ink);
  border-radius: 999px; padding: 6px 13px 6px 6px; cursor: pointer; font-weight: 600; font-size: 12.5px;
  display: inline-flex; align-items: center; gap: 8px; transition: .16s;
}
.preset span { width: 18px; height: 18px; border-radius: 50%; background: linear-gradient(135deg, var(--a), var(--b)); }
.preset:hover { border-color: var(--accent); transform: translateY(-1px); }

/* ---------------- ДРОПЗОНА ---------------- */
.dropzone {
  border: 1.5px dashed var(--line-strong); border-radius: var(--radius-sm);
  background: var(--panel-2); padding: 18px; text-align: center; cursor: pointer; transition: .18s;
  position: relative; min-height: 86px; display: grid; place-items: center;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--grad-soft); }
.dz-empty { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--ink-soft); font-size: 13px; }
.dz-empty i { font-size: 24px; }
.dz-preview { position: relative; }
.dz-preview img { max-width: 76px; max-height: 76px; border-radius: 10px; }
.dz-remove {
  position: absolute; top: -10px; right: -10px; width: 26px; height: 26px; border-radius: 50%;
  border: 0; background: #ef4444; color: #fff; cursor: pointer; font-size: 11px;
}

/* ---------------- ПРЕДПРОСМОТР ---------------- */
.preview-sticky { position: sticky; top: 88px; }
.preview-panel { padding: 20px; }
.preview-stage {
  position: relative; aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden;
  display: grid; place-items: center; background: var(--panel-2); border: 1px solid var(--line);
}
.checker {
  position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(45deg, var(--line) 25%, transparent 25%),
    linear-gradient(-45deg, var(--line) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--line) 75%),
    linear-gradient(-45deg, transparent 75%, var(--line) 75%);
  background-size: 22px 22px; background-position: 0 0, 0 11px, 11px -11px, -11px 0;
}
#preview {
  position: relative; max-width: 86%; max-height: 86%; border-radius: 6px;
  animation: pop .35s cubic-bezier(.2,.8,.2,1);
}
@keyframes pop { from { opacity: 0; transform: scale(.92); } to { opacity: 1; transform: none; } }
.preview-empty { position: relative; text-align: center; color: var(--ink-soft); padding: 20px; }
.preview-empty i { font-size: 44px; opacity: .5; }
.preview-empty p { margin: 12px 0 0; font-size: 14px; }
.preview-loading { position: absolute; inset: 0; display: grid; place-items: center; background: color-mix(in srgb, var(--panel-2) 70%, transparent); }
.spinner { width: 34px; height: 34px; border-radius: 50%; border: 3px solid var(--line-strong); border-top-color: var(--accent); animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Кнопки скачивания */
.dl-row { display: flex; gap: 8px; margin-top: 16px; }
.dl-btn {
  flex: 1; border: 1px solid var(--line); background: var(--panel-2); color: var(--ink);
  border-radius: var(--radius-sm); padding: 11px 8px; font-weight: 600; font-size: 13.5px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; transition: .16s;
}
.dl-btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.dl-btn.primary { background: var(--grad); border-color: transparent; color: #fff; box-shadow: 0 8px 22px rgba(109,94,252,.32); }
.dl-btn.primary:hover { color: #fff; filter: brightness(1.05); }
.dl-btn.ghost { background: transparent; }
.dl-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

.err-box {
  margin-top: 14px; padding: 11px 14px; border-radius: var(--radius-sm);
  background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.3); color: #ef4444; font-size: 13px;
}

.footnote { text-align: center; color: var(--ink-soft); font-size: 12.5px; margin-top: 16px; }
.footnote i { color: var(--accent-2); }

/* ---------------- ИСТОРИЯ / OFFCANVAS ---------------- */
.offcanvas { background: var(--panel); color: var(--ink); border-left: 1px solid var(--line); }
.offcanvas-header { border-bottom: 1px solid var(--line); }
.hist-item {
  display: flex; align-items: center; gap: 12px; padding: 10px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); margin-bottom: 8px; cursor: pointer; transition: .16s; background: var(--panel-2);
}
.hist-item:hover { border-color: var(--accent); transform: translateX(-2px); }
.hist-item img { width: 46px; height: 46px; border-radius: 9px; background: #fff; padding: 3px; }
.hist-meta { min-width: 0; }
.hist-type { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--accent); }
.hist-text { font-size: 13px; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------------- ПАКЕТ ---------------- */
.batch-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.batch-cell { border: 1px solid var(--line); border-radius: 12px; padding: 8px; background: var(--panel-2); text-align: center; }
.batch-cell img { width: 100%; border-radius: 8px; background: #fff; }
.batch-cell .bc-label { font-size: 10.5px; color: var(--ink-soft); margin-top: 5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------------- ТОСТ ---------------- */
.toast-wrap { position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 1080; pointer-events: none; }
.toast-msg {
  background: var(--ink); color: var(--bg); padding: 11px 20px; border-radius: 999px; font-weight: 600; font-size: 14px;
  opacity: 0; transform: translateY(12px); transition: .25s; box-shadow: var(--shadow-lg);
}
.toast-msg.show { opacity: 1; transform: none; }

/* ---------------- АДАПТИВ ---------------- */
@media (max-width: 991px) {
  .preview-sticky { position: static; }
  .preview-panel { margin-top: 4px; }
}
@media (max-width: 575px) {
  .panel { padding: 16px; }
  .type-grid { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); }
  .brand-text { font-size: 18px; }
}