:root {
  --bg-color: #f8fafc;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --primary: #3b82f6;

  --phase1-color: #2563eb;
  --phase1-bg: #eff6ff;
  --phase2-color: #16a34a;
  --phase2-bg: #f0fdf4;
  --phase3-color: #9333ea;
  --phase3-bg: #faf5ff;
  --phase4-color: #ea580c;
  --phase4-bg: #fff7ed;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

header {
  background-color: var(--card-bg);
  padding: 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

header p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.phase-section {
  margin-bottom: 4rem;
  border-radius: 12px;
  overflow: hidden;
}

.phase-header {
  padding: 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.phase-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
}

.phase-header p {
  font-size: 0.95rem;
  opacity: 0.9;
}

.phase-1 .phase-header {
  background-color: var(--phase1-bg);
  color: var(--phase1-color);
  border-left: 5px solid var(--phase1-color);
}
.phase-2 .phase-header {
  background-color: var(--phase2-bg);
  color: var(--phase2-color);
  border-left: 5px solid var(--phase2-color);
}
.phase-3 .phase-header {
  background-color: var(--phase3-bg);
  color: var(--phase3-color);
  border-left: 5px solid var(--phase3-color);
}
.phase-4 .phase-header {
  background-color: var(--phase4-bg);
  color: var(--phase4-color);
  border-left: 5px solid var(--phase4-color);
}

.cards-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.badge {
  background: #f1f5f9;
  color: #475569;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.metadata {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.metadata strong {
  color: var(--text-main);
}

.metadata p {
  margin-bottom: 0.5rem;
}

.inputs-container {
  background: #f8fafc;
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border: 1px dashed #cbd5e1;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.input-group input {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.input-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.prompt-preview {
  background: #1e293b;
  color: #f8fafc;
  padding: 1.5rem;
  border-radius: 8px;
  font-family: monospace;
  font-size: 0.95rem;
  white-space: pre-wrap;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.placeholder-text {
  color: #fbbf24;
  font-weight: bold;
  background: rgba(251, 191, 36, 0.2);
  padding: 0 4px;
  border-radius: 4px;
}

.btn-copy {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background-color 0.2s;
}

.btn-copy:hover {
  background-color: #2563eb;
}

.btn-copy.success {
  background-color: #10b981;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.modal-content h3 {
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.modal-content p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.btn-close {
  background: #ef4444;
  color: white;
  border: none;
  padding: 0.5rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
}

.btn-close:hover {
  background: #dc2626;
}

@media (min-width: 768px) {
  .btn-copy {
    width: auto;
  }
}