:root {
  --bg-primary: #fdf6f6;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #4a4a4a;
  --text-secondary: #7a7a7a;
  --accent-pink: #f8d7da;
  --accent-mint: #d4edda;
  --accent-lavender: #e6e0ff;
  --accent-blush: #ffe4e6;
  --accent-cream: #fef3c7;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.1);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font-display: "Playfair Display", serif;
  --font-body: "Nunito Sans", sans-serif;
}

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

body {
  background: linear-gradient(135deg, var(--bg-primary) 0%, #fff5f5 50%, #f0f9ff 100%);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  padding: 2rem;
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 300;
}

.back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

.back-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.5);
}

.config-link {
  display: inline-block;
  margin-bottom: 2rem;
  margin-left: 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

.config-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.5);
}

.create-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  transition: box-shadow 0.3s ease;
}

.create-card:hover {
  box-shadow: var(--shadow-hover);
}

.create-card textarea {
  width: 100%;
  min-height: 120px;
  padding: 1.25rem;
  border: 2px solid transparent;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  resize: vertical;
  transition: all 0.3s ease;
  outline: none;
}

.create-card textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.create-card textarea:focus {
  background: var(--bg-secondary);
  border-color: var(--accent-lavender);
  box-shadow: 0 0 0 4px rgba(230, 224, 255, 0.3);
}

.create-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}

button {
  padding: 0.875rem 2rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  outline: none;
}

button.primary {
  background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-blush) 100%);
  color: var(--text-primary);
  box-shadow: 0 4px 15px rgba(248, 215, 218, 0.4);
}

button.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(248, 215, 218, 0.6);
}

button.primary:active {
  transform: translateY(0);
}

button.secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  box-shadow: var(--shadow);
}

button.secondary:hover {
  color: var(--text-primary);
  box-shadow: var(--shadow-hover);
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.note-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.note-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-pink), var(--accent-mint), var(--accent-lavender));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.note-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.note-card:hover::before {
  opacity: 1;
}

.note-content {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1rem;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.note-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.note-date {
  font-weight: 400;
}

.note-id {
  opacity: 0.5;
  font-family: monospace;
}

.note-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.note-actions button {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

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

.notification {
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.notification.success {
  background: var(--accent-mint);
  color: #155724;
}

.notification.error {
  background: var(--accent-pink);
  color: #721c24;
}

.notification button {
  background: transparent;
  color: inherit;
  box-shadow: none;
  padding: 0.25rem 0.75rem;
  font-size: 1.25rem;
}

.notification button:hover {
  background: rgba(0, 0, 0, 0.05);
  transform: none;
  box-shadow: none;
}

.loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.loading::after {
  content: '...';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%, 20% { content: '.'; }
  40% { content: '..'; }
  60%, 100% { content: '...'; }
}

@media (max-width: 640px) {
  body {
    padding: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .create-card,
  .note-card,
  .empty-state {
    border-radius: var(--radius-md);
  }

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