:root {
  --bg-top: #f0d8b6;
  --bg-bottom: #f7f3ec;
  --panel: rgba(255, 252, 246, 0.88);
  --panel-strong: #fffaf2;
  --ink: #172033;
  --muted: #5a6272;
  --line: rgba(23, 32, 51, 0.14);
  --accent: #0d7c74;
  --accent-strong: #0b625c;
  --warm: #d77a3f;
  --shadow: 0 24px 72px rgba(64, 42, 23, 0.14);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --font-display: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
  --font-body: "Segoe UI", "Helvetica Neue", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.75), transparent 34%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom) 52%, #fdfaf6 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(23, 32, 51, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 32, 51, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), transparent 88%);
}

.page-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 2.5rem;
}

.hero,
.panel {
  animation: rise-in 480ms ease both;
}

.hero {
  padding: 0.2rem 0 1rem;
}

.eyebrow,
.panel-kicker {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--warm);
  font-weight: 700;
}

.hero h1 {
  margin: 0.45rem 0 0.6rem;
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.8vw, 3.85rem);
  line-height: 1;
}

.hero-copy {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.app-grid {
  display: grid;
  gap: 1.25rem;
}

.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.4);
  pointer-events: none;
}

.preview-panel,
.controls-panel {
  padding: 1.1rem;
}

.preview-panel {
  display: grid;
  gap: 1rem;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.panel-head h2 {
  margin: 0.3rem 0 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
}

.preview-stage {
  display: grid;
  place-items: center;
  min-height: 320px;
  padding: clamp(1rem, 3vw, 2rem);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(242, 236, 228, 0.9)),
    repeating-linear-gradient(
      45deg,
      rgba(23, 32, 51, 0.03),
      rgba(23, 32, 51, 0.03) 10px,
      transparent 10px,
      transparent 20px
    );
}

.qr-preview {
  width: min(100%, 420px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(23, 32, 51, 0.16);
}

.qr-preview svg {
  display: block;
  width: 100%;
  height: 100%;
}

.stats-row,
.field-group,
.download-row,
.action-row {
  display: grid;
  gap: 0.8rem;
}

.stats-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.stat-chip {
  padding: 0.6rem 0.75rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.46);
  border: 1px solid rgba(23, 32, 51, 0.1);
}

.stat-chip span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-chip strong {
  display: block;
  margin-top: 0.18rem;
  font-size: 0.9rem;
  font-weight: 700;
}

.status-message {
  margin: 0;
  min-height: 1.4rem;
  color: var(--accent-strong);
  font-weight: 600;
}

.controls-form {
  display: grid;
  gap: 1rem;
}

.easy-section {
  display: grid;
  gap: 0.8rem;
}

.section-copy h3 {
  margin: 0.3rem 0 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.preset-grid {
  display: grid;
  gap: 0.75rem;
}

.template-grid {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.preset-card {
  display: grid;
  gap: 0.45rem;
  text-align: left;
  padding: 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.preset-card strong {
  font-size: 1rem;
}

.preset-card span {
  color: var(--muted);
  line-height: 1.45;
}

.preset-card[data-active="true"] {
  border-color: rgba(13, 124, 116, 0.55);
  background: rgba(13, 124, 116, 0.12);
  box-shadow:
    0 10px 24px rgba(13, 124, 116, 0.08),
    inset 0 0 0 1px rgba(13, 124, 116, 0.18);
}

.template-card {
  display: grid;
  gap: 0.35rem;
  justify-items: center;
  text-align: center;
  padding: 0.75rem 0.5rem;
  border-radius: 16px;
  border: 1.5px solid rgba(23, 32, 51, 0.1);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.template-card:hover {
  transform: translateY(-2px);
  border-color: rgba(23, 32, 51, 0.2);
  box-shadow: 0 6px 20px rgba(23, 32, 51, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.template-card strong {
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}

.template-preview {
  display: block;
  width: 48px;
  height: 48px;
  color: var(--ink);
  opacity: 0.7;
  transition: opacity 180ms ease;
}

.template-card:hover .template-preview {
  opacity: 1;
}

.template-preview svg {
  display: block;
  width: 100%;
  height: 100%;
}

.template-card[data-active="true"] {
  border-color: rgba(215, 122, 63, 0.55);
  background:
    linear-gradient(160deg, rgba(255, 247, 239, 0.94), rgba(251, 232, 218, 0.88)),
    rgba(255, 255, 255, 0.82);
  box-shadow:
    0 8px 20px rgba(215, 122, 63, 0.1),
    inset 0 0 0 1px rgba(215, 122, 63, 0.18);
}

.template-card[data-active="true"] .template-preview {
  opacity: 1;
  color: var(--warm);
}

.cta-field {
  display: grid;
  gap: 0.6rem;
}

.cta-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.cta-pill {
  appearance: none;
  border: 1px solid rgba(23, 32, 51, 0.12);
  border-radius: 999px;
  padding: 0.38rem 0.8rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

.cta-pill:hover {
  background: rgba(215, 122, 63, 0.1);
  color: var(--warm);
  border-color: rgba(215, 122, 63, 0.3);
}

.preset-swatches {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.preset-swatches i {
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 999px;
  border: 1px solid rgba(23, 32, 51, 0.14);
  background: var(--swatch);
}

.field {
  display: grid;
  gap: 0.55rem;
}

.field span,
.field strong {
  font-size: 0.93rem;
}

.field textarea,
.field input[type="text"],
.field select,
.field input[type="color"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.95rem 1rem;
  font: inherit;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.88);
}

.field textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.5;
}

.field input[type="color"] {
  min-height: 56px;
  padding: 0.35rem;
}

.branding-grid {
  align-items: start;
}

.upload-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

.file-picker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.78rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

#crest-upload {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
  pointer-events: none;
}

.button-inline {
  padding: 0.78rem 1rem;
}

.file-note,
.field-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.field input[type="range"]:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.checkbox-field {
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.7);
}

.advanced-settings {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.56);
  overflow: hidden;
}

.advanced-settings summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.05rem;
  font-weight: 700;
}

.advanced-settings summary::-webkit-details-marker {
  display: none;
}

.advanced-settings summary::after {
  content: "+";
  float: right;
  color: var(--warm);
  font-size: 1.1rem;
}

.advanced-settings[open] summary::after {
  content: "-";
}

.advanced-body {
  display: grid;
  gap: 1rem;
  padding: 0 1.05rem 1.05rem;
  border-top: 1px solid rgba(23, 32, 51, 0.08);
}

.checkbox-field label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.checkbox-field input {
  inline-size: 1.1rem;
  block-size: 1.1rem;
}

.button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 0.92rem 1.15rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 180ms ease,
    opacity 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

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

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

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

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

.button-ghost {
  color: var(--ink);
  background: rgba(215, 122, 63, 0.12);
}

.site-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  padding: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-meta a {
  color: var(--accent-strong);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 0.08em;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 860px) {
  .app-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    align-items: start;
  }

  .preview-panel {
    position: sticky;
    top: 1rem;
  }

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

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

  .template-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 859px) {
  .page-shell {
    width: min(100% - 1rem, 960px);
    padding-top: 0.85rem;
  }

  .app-grid {
    grid-template-areas:
      "preview"
      "controls";
  }

  .preview-panel {
    grid-area: preview;
  }

  .controls-panel {
    grid-area: controls;
  }
}

@media (max-width: 560px) {
  .hero h1 {
    max-width: 9ch;
  }

  .panel-head {
    flex-direction: column;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .preset-grid {
    grid-template-columns: 1fr;
  }

  .template-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .preview-stage {
    min-height: 260px;
    padding: 1rem;
  }

  .preview-panel,
  .controls-panel {
    padding: 0.95rem;
  }
}