:root {
  --bg: #f5f1e8;
  --bg-2: #ece6d9;
  --panel: rgba(255, 252, 246, 0.88);
  --panel-strong: rgba(255, 255, 255, 0.96);
  --line: rgba(23, 33, 71, 0.1);
  --line-strong: rgba(23, 33, 71, 0.18);
  --text: #172147;
  --muted: #627092;
  --accent: #145dff;
  --accent-2: #0e39b8;
  --accent-soft: rgba(20, 93, 255, 0.08);
  --success: rgba(20, 93, 255, 0.12);
  --shadow: 0 28px 80px rgba(18, 31, 74, 0.12);
  --shadow-strong: 0 30px 90px rgba(18, 31, 74, 0.18);
  --radius: 28px;
  --font-display: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
  --font-body: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--text);
  font-family: var(--font-body);
  overscroll-behavior-y: contain;
  background:
    radial-gradient(circle at 14% 12%, rgba(255, 255, 255, 0.96), transparent 24%),
    radial-gradient(circle at 88% 10%, rgba(20, 93, 255, 0.16), transparent 16%),
    radial-gradient(circle at 84% 84%, rgba(255, 173, 62, 0.14), transparent 14%),
    linear-gradient(135deg, var(--bg) 0%, #f8f4ed 48%, var(--bg-2) 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: 0;
}

body::before {
  top: -160px;
  right: -110px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 93, 255, 0.14), rgba(20, 93, 255, 0));
  filter: blur(8px);
}

body::after {
  left: -120px;
  bottom: -150px;
  width: 380px;
  height: 380px;
  border-radius: 42% 58% 61% 39%;
  background: radial-gradient(circle, rgba(255, 171, 78, 0.14), rgba(255, 171, 78, 0));
  filter: blur(18px);
}

.shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 24px;
  min-height: 100vh;
  padding: 24px;
}

.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.8), rgba(255, 252, 246, 0.84)),
    linear-gradient(140deg, rgba(20, 93, 255, 0.04), rgba(255, 171, 78, 0.04));
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.44), rgba(255, 255, 255, 0)),
    linear-gradient(180deg, rgba(20, 93, 255, 0.04), transparent 24%);
  pointer-events: none;
}

.panel-controls,
.panel-stage {
  padding: 28px;
}

.panel-stage {
  display: flex;
  flex-direction: column;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

h1,
h2 {
  margin: 12px 0 0;
  letter-spacing: -0.045em;
  font-family: var(--font-display);
}

h1 {
  font-size: 42px;
  line-height: 0.98;
}

h2 {
  font-size: 30px;
  line-height: 1;
}

.intro {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.hero-tags span {
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(20, 93, 255, 0.12);
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
}

.mini-brief {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.brief-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-radius: 20px;
  border: 1px solid rgba(20, 93, 255, 0.08);
  background: rgba(255, 255, 255, 0.62);
}

.brief-item strong {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  font-size: 14px;
}

.brief-item span {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text);
  font-weight: 600;
}

.control-group {
  position: relative;
  margin-top: 22px;
  padding-top: 18px;
}

.control-group::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line), rgba(23, 33, 71, 0));
}

.section-title {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 800;
}

.upload-stack {
  display: grid;
  gap: 14px;
}

.upload-card,
.field,
.toggle {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.upload-card {
  position: relative;
  overflow: hidden;
  padding: 18px 18px 16px;
  border-radius: 24px;
  cursor: pointer;
  border: 1px solid rgba(20, 93, 255, 0.1);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 246, 241, 0.92)),
    linear-gradient(135deg, rgba(20, 93, 255, 0.04), rgba(255, 171, 78, 0.03));
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.upload-card::after {
  content: "";
  position: absolute;
  inset: auto -18px -40px auto;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 93, 255, 0.08), rgba(20, 93, 255, 0));
}

.upload-card:hover {
  transform: translateY(-2px);
  border-color: rgba(20, 93, 255, 0.24);
  box-shadow: 0 20px 44px rgba(20, 93, 255, 0.12);
}

.upload-icon {
  display: inline-flex;
  width: fit-content;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.upload-label {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.upload-hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.inline-actions {
  display: flex;
  justify-content: flex-end;
  margin: -2px 0 14px;
}

.mini-btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 12px;
  cursor: pointer;
}

.grid {
  display: grid;
  gap: 12px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 12px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.field input,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
}

.toggle {
  flex-direction: row;
  align-items: center;
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(20, 93, 255, 0.06);
}

.toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.button-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.btn {
  border: 0;
  border-radius: 18px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

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

.btn-primary {
  padding: 15px 18px;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 22px 38px rgba(20, 93, 255, 0.24);
}

.btn-secondary {
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-export {
  width: 100%;
  margin-top: 6px;
  font-size: 16px;
}

.action-note,
.export-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.hidden {
  display: none !important;
}

.note p {
  margin: 8px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.stage-meta {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.status-pill {
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--success);
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
}

.stage-tips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 18px;
}

.stage-tips span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(20, 93, 255, 0.1);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.canvas-wrap {
  position: relative;
  display: grid;
  place-items: center;
  flex: 1;
  min-height: 680px;
  overflow: hidden;
  padding: 20px;
  border-radius: 30px;
  border: 1px solid rgba(20, 93, 255, 0.08);
  overscroll-behavior: contain;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(247, 244, 238, 0.92)),
    repeating-linear-gradient(90deg, transparent 0, transparent 34px, rgba(20, 93, 255, 0.03) 34px, rgba(20, 93, 255, 0.03) 35px),
    repeating-linear-gradient(0deg, transparent 0, transparent 34px, rgba(20, 93, 255, 0.03) 34px, rgba(20, 93, 255, 0.03) 35px);
}

#previewCanvas {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  margin: 0 auto;
  border-radius: 24px;
  background: white;
  box-shadow: inset 0 0 0 1px rgba(20, 93, 255, 0.04);
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

#previewCanvas.crop-mode {
  cursor: crosshair;
}

.empty-state {
  position: absolute;
  inset: 20px;
  display: grid;
  place-items: center;
  pointer-events: none;
  text-align: center;
}

.empty-actions,
.mobile-dock,
.mobile-only {
  display: none;
}

.empty-title {
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.05em;
  font-family: var(--font-display);
}

.empty-copy {
  margin-top: 10px;
  max-width: 420px;
  color: var(--muted);
  line-height: 1.6;
}

.empty-actions {
  margin-top: 18px;
  gap: 10px;
  pointer-events: auto;
}

.empty-action,
.dock-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.empty-action {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 14px 30px rgba(20, 93, 255, 0.2);
}

.empty-action-secondary {
  background: rgba(255, 255, 255, 0.94);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.export-panel {
  margin-top: 18px;
  padding: 20px;
  border-radius: 24px;
  border: 1px solid rgba(20, 93, 255, 0.1);
  background: rgba(255, 255, 255, 0.72);
}

.export-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.export-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.export-btn {
  text-decoration: none;
}

.export-preview {
  display: block;
  width: auto;
  max-width: min(100%, 360px);
  height: auto;
  margin-top: 16px;
  border-radius: 20px;
  border: 1px solid rgba(20, 93, 255, 0.1);
  background: white;
  box-shadow: var(--shadow);
}

.crop-dialog {
  width: min(1080px, calc(100vw - 32px));
  border: 1px solid rgba(20, 93, 255, 0.12);
  border-radius: 30px;
  padding: 22px;
  background: rgba(255, 252, 246, 0.98);
  box-shadow: var(--shadow-strong);
}

.crop-dialog::backdrop {
  background: rgba(16, 24, 56, 0.36);
  backdrop-filter: blur(4px);
}

.crop-head,
.crop-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.crop-toolbar {
  margin-top: 14px;
}

.crop-canvas-shell {
  margin-top: 16px;
  padding: 12px;
  border-radius: 24px;
  border: 1px solid rgba(20, 93, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(247, 244, 238, 0.92)),
    repeating-linear-gradient(90deg, transparent 0, transparent 25px, rgba(20, 93, 255, 0.03) 25px, rgba(20, 93, 255, 0.03) 26px),
    repeating-linear-gradient(0deg, transparent 0, transparent 25px, rgba(20, 93, 255, 0.03) 25px, rgba(20, 93, 255, 0.03) 26px);
}

#cropCanvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 68vh;
  margin: 0 auto;
  border-radius: 18px;
  background: white;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

.crop-actions {
  margin-top: 16px;
}

@media (max-width: 1120px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .panel-controls {
    order: 2;
  }

  .panel-stage {
    order: 1;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: calc(92px + env(safe-area-inset-bottom, 0px));
  }

  .shell {
    grid-template-columns: 1fr;
    padding: 12px;
    gap: 12px;
  }

  .panel-stage {
    padding: 18px;
  }

  .panel-controls {
    display: none;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 28px;
  }

  .button-row,
  .grid.two,
  .grid.three,
  .export-head {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }

  .stage-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .status-pill {
    padding: 9px 12px;
  }

  .stage-tips {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin: 14px 0 14px;
  }

  .hero-tags,
  .mini-brief {
    display: none;
  }

  .control-group {
    margin-top: 18px;
    padding-top: 14px;
  }

  .upload-card {
    padding: 16px;
  }

  .upload-label {
    font-size: 20px;
  }

  .canvas-wrap {
    min-height: 380px;
    padding: 14px;
  }

  .empty-state {
    inset: 14px;
    align-content: center;
    padding: 18px;
  }

  .empty-title {
    font-size: 24px;
    line-height: 1.2;
  }

  .empty-copy {
    font-size: 14px;
  }

  .mobile-only {
    display: flex;
  }

  .empty-actions {
    justify-content: center;
    flex-wrap: wrap;
  }

  .mobile-dock {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    padding: 10px;
    border: 1px solid rgba(20, 93, 255, 0.12);
    border-radius: 24px;
    background: rgba(255, 252, 246, 0.94);
    backdrop-filter: blur(20px);
    box-shadow: 0 18px 40px rgba(18, 31, 74, 0.16);
  }

  .dock-btn {
    min-height: 48px;
    padding: 0 12px;
    font-size: 13px;
  }

  .dock-btn-primary,
  .dock-btn-export {
    border: 0;
    color: white;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
  }

  .dock-btn-secondary {
    background: rgba(255, 255, 255, 0.92);
    color: var(--text);
    border: 1px solid var(--line);
  }

  .dock-btn:disabled {
    opacity: 0.45;
  }
}