:root {
  --bg: #faf6f0;
  --card-bg: #ffffff;
  --text: #2f2a26;
  --muted: #8d837a;
  --accent: #b4845f;
  --accent-strong: #96684a;
  --border: #e9e2d8;
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --shadow-sm: 0 1px 2px rgba(47, 42, 38, 0.06);
  --shadow-md: 0 4px 16px rgba(47, 42, 38, 0.08);
  --shadow-lg: 0 12px 32px rgba(47, 42, 38, 0.12);
  --radius: 14px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-ui);
  color: var(--text);
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(212, 163, 115, 0.12), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(224, 122, 95, 0.06), transparent 55%),
    var(--bg);
  line-height: 1.6;
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 246, 240, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  align-items: center;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.85rem 2rem;
}

nav .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  color: var(--text);
  text-decoration: none;
}

nav .logo img {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

/* Layout */
main {
  flex: 1;
  max-width: 72rem;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem;
}

main h1 {
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.lead {
  color: var(--muted);
  margin-bottom: 2rem;
}

.composer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.composer-grid > * {
  min-width: 0;
}

@media (max-width: 800px) {
  .composer-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  nav {
    flex-wrap: wrap;
    padding: 0.7rem 1rem;
  }

  main {
    padding: 1.5rem 1rem 2.5rem;
  }

  main h1 {
    font-size: 1.6rem;
  }

  .panel {
    padding: 1.1rem;
  }

  .preview {
    padding: 1.5rem 1rem;
  }

  .card-flower {
    width: min(200px, 100%);
  }

  .png-row {
    flex-wrap: wrap;
  }

  .png-row button {
    min-width: 45%;
  }

  .copy-row input {
    font-size: 0.78rem;
  }

  .nav-toggle {
    font-size: 0.8rem;
  }
}

@media (min-width: 801px) {
  html {
    font-size: 22px;
  }

  .preview-panel {
    position: sticky;
    top: 4.75rem;
  }
}

/* Panels */
.panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  margin-bottom: 1.4rem;
  box-shadow: var(--shadow-sm);
}

.panel h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1rem;
}

.panel h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}

input[type="text"],
input[type="url"],
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  font: inherit;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

textarea {
  resize: vertical;
}

input[type="text"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(180, 132, 95, 0.14);
}

/* Theme pills */
.theme-pills {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.theme-pill {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.45rem;
  width: 100%;
  padding: 0.4rem 0.55rem 0.4rem 0.5rem;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: #fff;
  font: inherit;
  font-size: 0.9rem;
  color: var(--text);
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
}

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

.theme-pill .swatch {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.theme-pill.selected {
  box-shadow: 0 0 0 2px var(--accent), var(--shadow-sm);
}

/* Custom theme editor */
.custom-controls {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.color-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.6rem 0.5rem 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.color-row:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(180, 132, 95, 0.14);
}

.color-row input[type="color"] {
  width: 80%;
  height: 30px;
  padding: 0;
  margin: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.color-value {
  margin-left: auto;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: lowercase;
}

.custom-controls select {
  margin-bottom: 1rem;
}

/* Flower picker */
.flower-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.flower-option {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.55rem;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: #fff;
  font: inherit;
  color: var(--text);
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, border-color 0.12s;
}

.flower-option:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.flower-option img {
  width: 100%;
  height: 64px;
  object-fit: cover;
  border-radius: 8px;
}

.flower-option span {
  font-size: 0.8rem;
  text-align: center;
}

.flower-option.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}

/* Preview */
.preview {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem 1.5rem;
  margin-bottom: 1.25rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.preview-pattern {
  position: absolute;
  inset: 0;
  background-image: var(--pattern, none);
  background-repeat: repeat;
  background-size: 220px;
  opacity: 0.07;
  pointer-events: none;
  border-radius: inherit;
}

.preview.exporting {
  border-style: none;
}

.preview.shaded .card {
  border-color: var(--accent);
  background: linear-gradient(
    165deg,
    var(--shade-bg, var(--card-bg)) 0%,
    var(--card-bg) 60%
  );
}

.preview.shaded .card.image-bg {
  background: none;
  border-color: transparent;
}

/* Card */
.card {
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 20rem;
  padding: 1.75rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--card-bg) 70%, transparent);
  color: var(--text);
  font-family: var(--font, serif);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.card > :not(.card-bg) {
  position: relative;
  z-index: 1;
}

.card-bg {
  position: absolute;
  inset: -30px;
  display: none;
  background-size: cover;
  background-position: center;
  filter: blur(20px);
  transform: scale(1.2);
  z-index: 0;
}

.card.image-bg .card-bg {
  display: block;
}

.card.image-bg .card-bg {
  inset: 0;
  transform: none;
  filter: blur(16px);
}

.card.image-bg .card-flower {
  border-radius: 12px;
  box-shadow: 0 0 26px 6px rgba(0, 0, 0, 0.18);
}

.card-flower {
  width: 200px;
  height: 200px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 12px;
}

.card-flower img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-to {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0.75rem 0 0.25rem;
}

.card-message {
  font-size: 1.05rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.card-from {
  margin-top: 1rem;
  color: var(--muted);
  font-style: italic;
}

/* Share link + copy */
.copy-row {
  display: flex;
  gap: 0.6rem;
  min-width: 0;
}

.copy-row input {
  flex: 1;
  min-width: 0;
  margin-bottom: 0;
  background: #faf7f2;
  cursor: text;
}

#copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.1rem;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background 0.15s, transform 0.1s;
}

#copy-btn:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

/* Footer */
footer {
  padding: 1.25rem 2rem;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: rgba(250, 246, 240, 0.6);
}

/* PNG export */
.png-row {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.png-row button {
  flex: 1;
  padding: 0.6rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: #fff;
  font: inherit;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s, background 0.15s;
}

.png-row button:hover {
  border-color: var(--accent);
  background: #fdf8f2;
  transform: translateY(-1px);
}