:root {
  --bg: #262628;
  --card: rgba(28, 28, 29, 1);
  --ink: #f0f1f2;
  --muted: #a6adb5;
  --accent: #3b82f6;
  --accent-dark: #2563eb;
  --border: #343437;
  --ok: #3ecf8e;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
}

.page-header {
  background: linear-gradient(135deg, #0b1220 0%, #101a2e 55%, #12203f 100%);
  border-bottom: 1px solid var(--border);
  padding: 34px 18px 30px;
}

.slider {
  max-width: 1044px;
  margin: 0 auto;
  position: relative;
}

.slide { display: none; }
.slide.active { display: block; animation: slideIn .45s ease; }
@keyframes slideIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

.banner {
  color: #e2e8f0;
  padding-left: 22px;
  border-left: 4px solid var(--accent);
}

.banner-tag {
  display: inline-block;
  background: rgba(59, 130, 246, .16);
  border: 1px solid rgba(59, 130, 246, .4);
  color: #93c5fd;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.banner h1 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.3;
}

.banner p { margin: 0 0 12px; color: #cbd5e1; font-size: 15px; max-width: 800px; }
.banner .banner-sub { font-weight: 600; color: #e2e8f0; }
.banner ul { margin: 0; padding-left: 20px; }
.banner li { margin: 6px 0; color: #cbd5e1; font-size: 15px; }
.banner li::marker { color: var(--accent); }
.banner strong { color: #fff; }

.slider-btn {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(30, 41, 59, .85);
  border: 1px solid var(--border);
  color: #cbd5e1;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  transition: background .15s, color .15s, border-color .15s;
  z-index: 2;
}
.slider-btn:hover { background: rgba(59, 130, 246, .25); border-color: var(--accent); color: #fff; }
.slider-btn.prev { left: -58px; }
.slider-btn.next { right: -58px; }

.slider-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 18px;
}
.slider-dots button {
  width: 9px; height: 9px;
  border-radius: 50%;
  border: 1px solid rgba(203, 213, 225, .5);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background .15s, transform .15s;
}
.slider-dots button:hover { border-color: #93c5fd; }
.slider-dots button.on { background: var(--accent); border-color: var(--accent); transform: scale(1.25); }

@media (max-width: 1180px) {
  .slider-btn.prev { left: 8px; }
  .slider-btn.next { right: 8px; }
}

.layout {
  max-width: 1080px;
  margin: 26px auto;
  padding: 0 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 22px;
}

.card h2 {
  margin: 0 0 16px;
  font-size: 17px;
  color: var(--ink);
}

.step {
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-num {
  display: grid;
  place-items: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }

.dropzone {
  border: 2px dashed #3d3d41;
  border-radius: var(--radius);
  padding: 34px 16px;
  text-align: center;
  display: block;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  background: #202021;
}

.dropzone.drag, .dropzone:hover {
  border-color: var(--accent);
  background: #1f2a3d;
}

.dz-icon { display: block; font-size: 34px; margin-bottom: 8px; }
.dz-text { display: block; font-weight: 600; }
.dz-hint { display: block; color: var(--muted); font-size: 13px; margin-top: 4px; }

.preview-wrap {
  position: relative;
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.preview-wrap img {
  display: block;
  width: 100%;
  height: auto;
}

.mask-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.hide-zones {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.switch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: #a8b3bf; }
.field input[type="text"], .field input[type="date"], .field select {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 14px;
  background: #262627;
  color: var(--ink);
}
.field select option { background: #1c1c1d; }
.field input:focus, .field select:focus {
  outline: 2px solid rgba(59, 130, 246, .35);
  border-color: var(--accent);
}

.field input[type="range"] { width: 100%; accent-color: var(--accent); }
.field output { color: var(--accent); font-weight: 700; }
.field input[type="date"] { color-scheme: dark; }

.field.row { display: flex; align-items: flex-end; gap: 12px; }
.field.row > div { flex: 1; }

.row-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.row-inline input[type="color"] {
  width: 44px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #1c1c1d;
  padding: 2px;
}

.swatches { display: flex; gap: 8px; }
.swatches button {
  width: 26px; height: 26px;
  border-radius: 7px;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--border);
  cursor: pointer;
}

.hint { margin: 6px 0 0; font-size: 12px; color: var(--muted); }

.btn {
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background .15s, transform .05s;
}

.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:disabled { background: #6e8fbf; cursor: wait; }

.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--border); }
.btn-ghost:hover { background: #2b2b2d; }

.btn-small { font-size: 13px; padding: 8px 12px; }
.btn-block { width: 100%; margin-top: 4px; }

.controls { border-top: 1px dashed var(--border); padding-top: 14px; margin-top: 4px; }

.result { text-align: center; }
.result img {
  max-width: 100%;
  max-height: 60vh;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 26px rgba(20, 40, 80, .14);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 18, 28, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}
.modal-overlay[hidden] { display: none; }

.modal {
  position: relative;
  max-width: 640px;
  width: 100%;
  max-height: 92vh;
  overflow: auto;
  margin: auto;
}

.modal-close {
  position: absolute;
  top: 8px;
  right: 12px;
  border: 0;
  background: transparent;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
}
.modal-close:hover { color: var(--ink); }

.result-actions {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.dl-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.format-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.format-row select {
  background: #262627;
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
}

.format-row select option { background: #1c1c1d; }

.privacy-note {
  margin-top: 14px;
  font-size: 13px;
  color: #7ce0b4;
  background: rgba(62, 207, 142, .10);
  border: 1px solid rgba(62, 207, 142, .35);
  border-radius: 10px;
  padding: 10px 14px;
}

.alert {
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 14px;
}

.alert-error {
  background: rgba(255, 90, 90, .12);
  border: 1px solid rgba(255, 90, 90, .4);
  color: #ffb3b3;
}

.page-footer {
  border-top: 1px solid var(--border);
  margin-top: 26px;
  padding: 16px 0 26px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.page-footer p { margin: 0; }

.footer-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.footer-logos img {
  height: 44px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}

.info h2 { font-size: 18px; margin: 24px 0 10px; color: var(--ink); }
.info h2:first-child { margin-top: 0; }
.info p { margin: 8px 0; color: var(--muted); }
.info .sub { color: var(--ink); font-weight: 600; }
.info ul { margin: 8px 0 14px; padding-left: 20px; color: var(--muted); }
.info li { margin: 6px 0; }
.info strong { color: var(--ink); }

.intro-note {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  background: rgba(59, 130, 246, .12);
  border: 1px solid rgba(59, 130, 246, .35);
  border-radius: 10px;
  padding: 10px 14px;
}

.rotate-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 12px 0 4px;
}

.rotate-label {
  font-size: 13px;
  color: var(--muted);
}

.rotate-btns { display: flex; gap: 6px; }

.rot-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--ink);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.rot-btn:hover { border-color: var(--accent); }

.rot-btn.on {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.assistant {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.assistant-avatar {
  position: relative;
  width: 62px;
  height: 62px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  background: linear-gradient(180deg, #60a5fa, #2563eb);
  box-shadow: 0 10px 26px rgba(37, 99, 235, .45);
  display: grid;
  place-items: center;
  animation: asstBob 3.2s ease-in-out infinite;
}

.assistant-avatar svg { width: 40px; height: 40px; }
.assistant-avatar:hover { animation-play-state: paused; }

.assistant-ping {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(96, 165, 250, .7);
  animation: asstPing 2.6s ease-out infinite;
}

@keyframes asstBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes asstPing {
  0% { transform: scale(1); opacity: .7; }
  70%, 100% { transform: scale(1.7); opacity: 0; }
}

.assistant-bubble {
  position: relative;
  max-width: 280px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 16px 12px;
  box-shadow: var(--shadow);
  animation: asstPop .25s ease-out;
}

.assistant-bubble[hidden] { display: none; }

.assistant-bubble::after {
  content: '';
  position: absolute;
  right: 24px;
  bottom: -7px;
  width: 13px;
  height: 13px;
  background: var(--card);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transform: rotate(45deg);
}

@keyframes asstPop {
  from { opacity: 0; transform: translateY(8px) scale(.96); }
  to { opacity: 1; transform: none; }
}

.assistant-text {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  text-align: justify;
}

.assistant-close {
  position: absolute;
  top: 4px;
  right: 6px;
  width: 26px;
  height: 26px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  border-radius: 6px;
}

.assistant-close:hover { color: var(--ink); background: rgba(255, 255, 255, .06); }

.assistant-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.assistant-dots { display: flex; gap: 6px; }

.assistant-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
}

.assistant-dots span.on { background: var(--accent); }

.assistant-next {
  border: 0;
  border-radius: 8px;
  padding: 6px 12px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.assistant-next:hover { background: var(--accent-dark); }

@media (max-width: 640px) {
  .assistant { right: 14px; bottom: 14px; }
  .assistant-avatar { width: 54px; height: 54px; }
  .assistant-avatar svg { width: 34px; height: 34px; }
  .assistant-bubble { max-width: 64vw; }
}