@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #0f766e;
  --primary-dark: #115e59;
  --primary-soft: #ccfbf1;
  --accent: #f59e0b;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --radius: 24px;
  --radius-sm: 16px;
  --transition: all .25s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Noto Sans Thai', 'Inter', system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(245, 158, 11, 0.12), transparent 24%),
    var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.nav-inner,
.hero,
.tool-section,
.pricing,
.features,
.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
}

.logo-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #14b8a6);
  color: #fff;
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  gap: 18px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.hero {
  padding-top: 72px;
  padding-bottom: 36px;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary-dark);
  font-size: 0.9rem;
  font-weight: 700;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero p {
  max-width: 760px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.06rem;
}

.tool-section {
  padding-bottom: 44px;
}

.tool-card,
.price-card,
.feature-card,
.modal {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(226, 232, 240, 0.95);
  box-shadow: var(--shadow);
}

.tool-card {
  padding: 26px;
  border-radius: 30px;
}

.drop-zone {
  border: 2px dashed #99f6e4;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(204, 251, 241, 0.7), rgba(255, 255, 255, 0.95));
  padding: 52px 22px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.drop-zone:hover,
.drop-zone.drag-over {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.drop-zone .icon {
  font-size: 3rem;
  margin-bottom: 10px;
}

.drop-zone p {
  margin: 0 0 8px;
}

.drop-zone .hint,
.helper-text,
.preview-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.drop-zone input {
  display: none;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.9fr);
  gap: 24px;
}

.preview-panel,
.controls-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 20px;
}

.preview-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.preview-header h2 {
  margin: 0 0 4px;
  font-size: 1.2rem;
}

.canvas-wrap {
  display: flex;
  justify-content: center;
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ecfeff, #f8fafc);
  border: 1px solid var(--border);
}

#previewCanvas {
  width: 100%;
  max-width: 680px;
  height: auto;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.1);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.controls-panel {
  display: grid;
  gap: 18px;
  align-content: start;
}

.control-block label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
}

select,
input[type="range"],
input[type="color"] {
  width: 100%;
}

select {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
}

input[type="range"] {
  accent-color: var(--primary);
}

.color-row {
  display: grid;
  gap: 10px;
}

input[type="color"] {
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

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

.swatch {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
}

.swatch.active {
  border-color: var(--text);
}

.thumb-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.thumb-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.thumb-item span {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.7);
  color: #fff;
  font-size: 0.72rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  border: 0;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 700;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #14b8a6);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--primary-dark);
  border: 1px solid rgba(15, 118, 110, 0.25);
}

.btn-ghost {
  background: var(--surface-2);
  color: var(--text-secondary);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  min-height: 38px;
  padding: 0 14px;
  font-size: 0.88rem;
}

.pricing,
.features {
  padding-top: 52px;
  padding-bottom: 52px;
}

.pricing h2,
.features h2 {
  margin: 0 0 10px;
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin: 0 0 28px;
}

.pricing-grid,
.features-grid {
  display: grid;
  gap: 18px;
}

.pricing-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 780px;
  margin: 0 auto;
}

.price-card {
  position: relative;
  border-radius: 24px;
  padding: 28px 24px;
}

.price-card.featured {
  border-color: rgba(15, 118, 110, 0.35);
}

.badge {
  position: absolute;
  top: -12px;
  left: 24px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
}

.plan-name {
  color: var(--text-secondary);
}

.price {
  margin: 6px 0 16px;
  font-size: 2.6rem;
  font-weight: 800;
}

.price-card ul {
  margin: 0 0 18px;
  padding-left: 18px;
  color: var(--text-secondary);
}

.price-card li {
  margin-bottom: 8px;
}

.price-card li.no {
  opacity: 0.85;
}

.features-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
  border-radius: 24px;
  padding: 24px 20px;
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 14px;
  border-radius: 16px;
  background: var(--primary-soft);
  font-size: 1.5rem;
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.feature-card p,
.footer {
  color: var(--text-secondary);
}

.footer {
  padding-top: 28px;
  padding-bottom: 36px;
  text-align: center;
}

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(8px);
}

.modal-overlay.active {
  display: flex;
}

.modal {
  width: min(460px, 100%);
  padding: 28px;
  border-radius: 28px;
}

.modal h3 {
  margin: 0 0 10px;
  font-size: 1.35rem;
}

.modal p {
  color: var(--text-secondary);
}

.modal canvas {
  display: block;
  margin: 18px auto 12px;
}

.modal-actions {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn .5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .workspace-grid,
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }

  .workspace-grid,
  .pricing-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .tool-card {
    padding: 18px;
  }

  .thumb-list {
    grid-template-columns: repeat(4, 1fr);
  }
}