:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #30363d;
  --border-color: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-primary: #58a6ff;
  --accent-secondary: #388bfd;
  --accent-green: #3fb950;
  --accent-red: #f85149;
  --accent-yellow: #d29922;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* Views */
.view {
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* Login View */
.login-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  background: 
    radial-gradient(ellipse at top, rgba(88, 166, 255, 0.1) 0%, transparent 50%),
    var(--bg-primary);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.logo-icon {
  font-size: 2.5rem;
  color: var(--accent-primary);
  animation: pulse 2s ease-in-out infinite;
}

.logo-icon.small {
  font-size: 1.5rem;
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.logo h1 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  font-size: 0.9rem;
}

#login-form {
  width: 100%;
  max-width: 360px;
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

/* Input Groups */
.input-group {
  margin-bottom: 1.25rem;
}

.input-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-group input,
.input-group textarea,
.input-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

.input-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: var(--accent-secondary);
}

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

.btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.btn-danger:hover {
  background: #da3633;
}

.btn-sm {
  padding: 0.5rem 0.875rem;
  font-size: 0.85rem;
}

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

.btn-arrow {
  transition: transform 0.2s;
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

#login-form .btn {
  width: 100%;
  margin-top: 0.5rem;
}

/* Error */
.error {
  color: var(--accent-red);
  font-size: 0.85rem;
  margin-top: 1rem;
  text-align: center;
}

/* Dashboard */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-left h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.tab {
  padding: 0.625rem 1rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.tab:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.tab.active {
  color: var(--accent-primary);
  background: rgba(88, 166, 255, 0.1);
}

.tab-content {
  animation: fadeIn 0.2s ease;
}

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

.tab-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.tab-header h2 {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Project Selector */
.project-selector {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.project-selector label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.select-wrapper {
  position: relative;
}

.select-wrapper select {
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  font-size: 0.9rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  appearance: none;
  min-width: 200px;
}

.select-wrapper::after {
  content: '▼';
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.6rem;
  color: var(--text-secondary);
  pointer-events: none;
}

.project-input-group {
  display: flex;
  gap: 0.5rem;
}

.project-input-group input {
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  min-width: 180px;
}

/* Memories Grid */
.memories-grid {
  display: grid;
  gap: 1rem;
}

.memory-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: border-color 0.2s;
}

.memory-card:hover {
  border-color: var(--bg-hover);
}

.memory-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.memory-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.memory-actions {
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.2s;
}

.memory-card:hover .memory-actions {
  opacity: 1;
}

.memory-actions button {
  padding: 0.375rem 0.625rem;
  font-size: 0.8rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.memory-actions button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.memory-actions button.delete:hover {
  background: rgba(248, 81, 73, 0.2);
  color: var(--accent-red);
  border-color: var(--accent-red);
}

.memory-value {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.memory-meta {
  display: flex;
  gap: 1rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Empty state */
.empty-state,
.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow);
  animation: slideUp 0.2s ease;
}

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

.modal-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.875rem 1.25rem;
  box-shadow: var(--shadow);
  animation: slideUp 0.3s ease;
  z-index: 200;
}

.toast.success {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.toast.error {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* Responsive */
@media (max-width: 768px) {
  main {
    padding: 1rem;
  }

  .tab-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .project-selector {
    width: 100%;
  }

  .select-wrapper select {
    width: 100%;
  }

  header {
    padding: 1rem;
  }

  .modal-content {
    margin: 1rem;
    width: calc(100% - 2rem);
  }
}