@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;600;700&display=swap');

:root {
  --bg-dark: #0f0f12;
  --bg-card: #1a1a20;
  --bg-input: #252530;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.4);
  --text: #e4e4e7;
  --text-muted: #a1a1aa;
  --success: #22c55e;
  --border: #27272a;
}

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

body {
  font-family: 'Sarabun', -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.app {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
}

.header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.header h1 {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-size: 1rem;
}

.main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

.file-sections {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 600px) {
  .file-sections {
    grid-template-columns: 1fr;
  }
}

.file-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.file-section label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.btn {
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #2d2d3a;
  border-color: var(--accent);
}

.btn-create {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: white;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-create:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
}

.btn-create:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.file-list {
  min-height: 60px;
  padding: 0.75rem;
  background: var(--bg-input);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.file-list.has-files {
  color: var(--text);
}

.file-list .file-item {
  padding: 0.25rem 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  align-items: end;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.option-group label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.option-group select,
.option-group input[type="text"],
.option-group input[type="number"] {
  padding: 0.5rem 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

.option-group input[type="color"] {
  width: 100%;
  height: 38px;
  padding: 4px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text);
}

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

.text-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.options-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .options-row {
    grid-template-columns: 1fr;
  }
}

.save-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.folder-path {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 400px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.action-area {
  display: flex;
  justify-content: center;
  padding: 1rem 0;
}

.progress-area {
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.progress-bar {
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
  width: 0%;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.result-area {
  padding: 1.5rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 12px;
}

.success-msg {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--success);
  margin-bottom: 0.5rem;
}

.output-path {
  font-size: 0.9rem;
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: 1rem;
}

.result-area .btn {
  margin-top: 0.5rem;
}