:root {
  --blue: #356e57;
  --blue-dark: #194f45;
  --purple: #6f9e72;
  --ink: #193d38;
  --muted: #5d7168;
  --line: #e5ddc9;
  --soft: #fff9e9;
  --soft-blue: #edf5df;
  --success: #356e57;
  --danger: #c9503f;
  --white: #fffdf7;
  --shadow: 0 18px 46px rgba(24, 66, 55, .12);
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--soft);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 12%, rgba(248, 198, 63, .22), transparent 25%),
    radial-gradient(circle at 94% 76%, rgba(111, 158, 114, .19), transparent 28%),
    var(--soft);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Segoe UI", sans-serif;
}

button,
input,
select,
textarea { font: inherit; }

button { cursor: pointer; }

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(63, 102, 232, .28);
  outline-offset: 2px;
}

.hero {
  min-height: 174px;
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(120deg, var(--blue-dark) 0%, var(--blue) 48%, var(--purple) 100%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, .08);
  transform: rotate(-18deg);
}

.hero::before {
  width: 420px;
  height: 120px;
  right: 4%;
  top: -24px;
}

.hero::after {
  width: 310px;
  height: 92px;
  right: 17%;
  bottom: -55px;
}

.hero-inner {
  width: min(1480px, calc(100% - 64px));
  min-height: 174px;
  margin: 0 auto;
  padding: 48px 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.back-link {
  padding: 8px 12px;
  position: absolute;
  top: 12px;
  left: 0;
  border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 9px;
  background: rgba(255, 255, 255, .13);
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  transition: background .18s ease, transform .18s ease;
}

.back-link:hover {
  background: rgba(255, 255, 255, .24);
  transform: translateY(-1px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 17px;
}

.brand-icon {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 18px;
  background: rgba(255, 255, 255, .18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22);
  font-size: 32px;
}

h1 {
  margin: 0 0 6px;
  font-size: clamp(29px, 2.5vw, 37px);
  line-height: 1.15;
  letter-spacing: .03em;
}

.tagline {
  margin: 0;
  color: rgba(255, 255, 255, .84);
  font-size: 17px;
  letter-spacing: .02em;
}

.steps {
  display: flex;
  align-items: center;
  gap: 9px;
}

.step {
  min-width: 132px;
  padding: 11px 14px;
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid rgba(255, 255, 255, .23);
  border-radius: 15px;
  background: rgba(255, 255, 255, .12);
  color: rgba(255, 255, 255, .84);
  backdrop-filter: blur(8px);
  font-size: 14px;
}

.step.active {
  color: var(--blue-dark);
  border-color: var(--white);
  background: var(--white);
  box-shadow: 0 10px 26px rgba(30, 40, 98, .19);
}

.step-number {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: rgba(255, 255, 255, .18);
  color: var(--white);
  font-size: 13px;
  font-weight: 800;
}

.step.active .step-number {
  background: linear-gradient(135deg, var(--blue), var(--purple));
}

.workspace {
  width: min(1480px, calc(100% - 64px));
  margin: -23px auto 0;
  padding-bottom: 28px;
  position: relative;
  z-index: 2;
}

.columns {
  display: grid;
  grid-template-columns: 460px minmax(0, 1fr);
  gap: 22px;
  align-items: stretch;
}

.card {
  min-width: 0;
  border: 1px solid rgba(204, 214, 238, .84);
  border-radius: 22px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.input-card { padding: 25px 25px 22px; }

.preview-card {
  min-height: 790px;
  padding: 21px 23px 20px;
  display: flex;
  flex-direction: column;
}

.card-heading {
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.preview-card .card-heading {
  align-items: center;
  margin-bottom: 13px;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .1em;
}

h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.helper {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.ready-pill {
  flex: 0 0 auto;
  padding: 7px 11px;
  border-radius: 999px;
  background: #e9f8f1;
  color: var(--success);
  font-size: 12px;
  font-weight: 800;
}

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

.step-chip {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 10px;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--purple));
  font-size: 13px;
  font-weight: 800;
}

.link-button {
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--white);
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 800;
}

.word-list-label {
  display: block;
  margin: 13px 2px 6px;
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 800;
}

.word-list-input {
  width: 100%;
  min-height: 286px;
  padding: 11px 12px;
  resize: vertical;
  border: 1px solid #dce2f0;
  border-radius: 12px;
  outline: none;
  background: #fbfcff;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.65;
}

.word-list-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(53, 110, 87, .12);
}

.translation-settings {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 9px;
  color: var(--muted);
  font-size: 12px;
}

.translation-settings label {
  color: var(--blue-dark);
  font-weight: 800;
}

.translation-settings span { flex: 1 0 100%; }

.lang-select {
  height: 32px;
  padding: 0 8px;
  border: 1px solid #dce2f0;
  border-radius: 9px;
  background: var(--white);
  color: var(--ink);
  font-size: 12px;
}

.word-meta {
  margin: 8px 2px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}

#wordCount { font-weight: 800; color: var(--success); }
#wordCount.warning { color: var(--danger); }

.helper-inline { color: #9aa2b8; }

.option-block { margin-top: 20px; }

.option-block h3 {
  margin: 0 0 10px;
  color: #4b5672;
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 6px;
}

.option-row {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.option-row .option-block { margin-top: 0; }

.scheme-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.scheme-btn {
  padding: 9px 13px;
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fbfcff;
  color: #545f7c;
  font-size: 12px;
  font-weight: 700;
}

.scheme-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex: 0 0 auto;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.06);
}

.scheme-btn:hover { border-color: #b7c4f2; }

.scheme-btn.active {
  border-color: var(--blue);
  background: var(--soft-blue);
  color: var(--blue-dark);
  box-shadow: 0 6px 14px rgba(63, 102, 232, .16);
}

.font-select {
  width: 100%;
  height: 40px;
  padding: 0 10px;
  border: 1px solid #dce2f0;
  border-radius: 10px;
  background: var(--white);
  color: var(--ink);
}

.bg-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding-top: 4px;
}

.bg-swatch {
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 50%;
  box-shadow: 0 0 0 1px #fff, 0 2px 6px rgba(30,40,80,.12);
}

.bg-swatch.active {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.worksheet-shell {
  min-height: 0;
  flex: 1;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid #e2e6ef;
  border-radius: 16px;
  background: #fafbfe;
}

.paper {
  width: 100%;
  max-width: 430px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  border-radius: 5px;
  background: var(--white);
  box-shadow: 0 7px 22px rgba(47, 55, 84, .1);
}

.paper-head {
  margin-bottom: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 12px;
  color: #222b3a;
}

.title-input {
  min-width: 0;
  flex: 1;
  padding: 4px 2px;
  border: 0;
  border-bottom: 1px dashed transparent;
  background: transparent;
  color: #222b3a;
  font-size: 16px;
  font-weight: 800;
}

.title-input:hover,
.title-input:focus {
  border-bottom-color: #c7d0ec;
}

.paper-head span {
  flex: 0 0 auto;
  color: #788091;
  font-size: 10px;
  white-space: nowrap;
}

.canvas-wrap {
  width: 100%;
  aspect-ratio: 210 / 297;
  display: grid;
  place-items: center;
}

#cloudCanvas {
  width: 100%;
  height: 100%;
  border-radius: 4px;
}

#cloudPrintImage { display: none; }

.toolbar {
  min-height: 74px;
  margin-top: 17px;
  padding: 13px 21px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.actions {
  display: flex;
  align-items: center;
  gap: 9px;
}

.btn {
  height: 44px;
  padding: 0 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.btn:hover:not(:disabled) { transform: translateY(-1px); }

.btn:disabled {
  cursor: not-allowed;
  opacity: .5;
}

.btn-secondary {
  border: 1px solid #cbd6f5;
  background: var(--white);
  color: var(--blue-dark);
}

.btn-secondary:hover:not(:disabled) {
  border-color: #8ba2fa;
  box-shadow: 0 7px 18px rgba(63, 102, 232, .1);
}

.btn-primary {
  min-width: 158px;
  border: 0;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  box-shadow: 0 9px 20px rgba(82, 78, 209, .25);
  color: var(--white);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 11px 24px rgba(82, 78, 209, .32);
}

.toast {
  max-width: calc(100% - 32px);
  padding: 11px 15px;
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 10;
  transform: translate(-50%, 20px);
  border-radius: 999px;
  background: #202a44;
  box-shadow: 0 12px 30px rgba(26, 34, 58, .24);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

@media (max-width: 1240px) {
  .hero-inner,
  .workspace { width: calc(100% - 40px); }
  .steps { display: none; }
  .columns { grid-template-columns: 1fr; }
  .preview-card { min-height: 0; }
}

@media (max-width: 980px) {
  .hero-inner,
  .workspace { width: calc(100% - 28px); }
  .hero-inner {
    min-height: 150px;
    padding-bottom: 31px;
  }
  .paper { max-width: 100%; }
}

@media (max-width: 620px) {
  .hero-inner {
    width: calc(100% - 24px);
    min-height: 156px;
    padding: 50px 0 25px;
  }
  .brand { gap: 12px; }
  .brand-icon {
    width: 52px;
    height: 52px;
    border-radius: 15px;
    font-size: 27px;
  }
  h1 { font-size: 26px; }
  .tagline { font-size: 14px; }
  .workspace {
    width: calc(100% - 20px);
    margin-top: -17px;
  }
  .input-card,
  .preview-card {
    padding: 19px 15px 16px;
    border-radius: 18px;
  }
  .card-heading { flex-direction: column; }
  .preview-card .card-heading { align-items: flex-start; }
  .option-row { grid-template-columns: 1fr; }
  .toolbar { padding: 15px; }
  .actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .actions .btn-primary { grid-column: 1 / -1; }
  .btn {
    width: 100%;
    min-width: 0;
    padding-inline: 11px;
  }
}

@media print {
  @page {
    size: A4 portrait;
    margin: 8mm;
  }

  html,
  body {
    min-width: 0;
    background: #fff;
  }

  body {
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .hero,
  .back-link,
  .input-card,
  .preview-card > .card-heading,
  .toolbar,
  .toast {
    display: none !important;
  }

  .workspace {
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .columns { display: block; }

  .preview-card,
  .worksheet-shell,
  .paper {
    min-height: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: #fff;
    box-shadow: none;
  }

  .preview-card::before { display: none !important; }

  .worksheet-shell { display: block; }

  .paper {
    max-width: 100%;
    padding-top: 7mm;
    break-inside: avoid;
    page-break-inside: avoid;
  }
  .paper-head { margin-bottom: 3mm; }
  .title-input { font-size: 15pt; border: 0 !important; }
  .paper-head span { font-size: 8pt; }

  .canvas-wrap {
    width: 180mm;
    height: 250mm;
    margin: 0 auto;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  #cloudCanvas { display: none !important; }

  #cloudPrintImage {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: fill;
  }
}

/* Match the Chen Laoshi classroom palette without changing the cloud controls. */
@media screen {
  .hero {
    background: linear-gradient(120deg, var(--blue-dark) 0%, var(--blue) 54%, var(--purple) 100%);
  }

  .hero::before,
  .hero::after { background: rgba(255, 249, 233, .1); }

  .back-link {
    border-radius: 999px;
    border-color: rgba(255, 249, 233, .7);
    background: rgba(255, 253, 247, .12);
  }

  .step.active {
    color: var(--blue-dark);
    border-color: var(--white);
    background: var(--white);
    box-shadow: 0 10px 26px rgba(16, 62, 55, .18);
  }

  .step.active .step-number,
  .step-chip {
    background: linear-gradient(135deg, var(--leaf), var(--leaf-light));
  }

  .ready-pill {
    border: 1px solid #d8e5c7;
    background: #edf5df;
    color: var(--leaf);
  }

  .helper-inline { color: #7d8f84; }
  .option-block h3 { color: var(--blue-dark); }

  .scheme-btn { background: #fffef9; color: var(--muted); }
  .scheme-btn:hover { border-color: var(--sun-deep); }
  .scheme-btn.active {
    border-color: var(--leaf);
    background: #edf5df;
    color: var(--blue-dark);
    box-shadow: 0 6px 14px rgba(53, 110, 87, .14);
  }

  .bg-swatch { box-shadow: 0 0 0 1px #fffdf7, 0 2px 6px rgba(24, 66, 55, .12); }
  .bg-swatch.active { outline-color: var(--sun-deep); }

  .worksheet-shell {
    border-color: var(--line);
    background: #f5f1e4;
  }

  .paper-head,
  .title-input { color: var(--ink); }

  .title-input:hover,
  .title-input:focus { border-bottom-color: var(--sun-deep); }

  .toolbar { background: #fffdf7; }

  .btn-secondary {
    border-color: #d8e5c7 !important;
    background: #fffef9 !important;
    box-shadow: none !important;
    color: var(--blue-dark) !important;
  }

  .btn-secondary:hover:not(:disabled) {
    border-color: var(--sun-deep) !important;
    background: #fff2c6 !important;
    box-shadow: 0 7px 18px rgba(53, 110, 87, .12) !important;
  }

  .btn-primary { box-shadow: 0 9px 20px rgba(157, 57, 47, .25); }
  .btn-primary:hover:not(:disabled) { box-shadow: 0 11px 24px rgba(157, 57, 47, .32); }
  .toast { background: var(--blue-dark); }
}