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

:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: #252540;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #666680;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --border: #333355;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 800px;
  margin: 0 auto;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

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

.menu-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.menu-btn:hover {
  background: var(--bg-card);
}

/* Tabs */
.tabs {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex: 1;
  padding: 12px 16px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

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

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Main Content */
.main {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.card h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  gap: 16px;
}

/* Break-even Card */
.break-even-card {
  text-align: center;
}

.progress-ring-container {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 20px auto;
}

.progress-ring {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.progress-ring-bg {
  fill: none;
  stroke: var(--bg-secondary);
  stroke-width: 8;
}

.progress-ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 326.73;
  stroke-dashoffset: 326.73;
  transition: stroke-dashoffset 0.5s ease;
}

.progress-ring-fill.success {
  stroke: var(--success);
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.progress-percent {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.progress-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.break-even-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 20px;
}

.detail {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.detail.highlight {
  background: var(--accent);
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
}

.detail.highlight.positive {
  background: linear-gradient(135deg, var(--success), #16a34a);
}

.detail-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.detail.highlight .detail-label {
  color: rgba(255, 255, 255, 0.8);
}

.detail-value {
  font-weight: 600;
  font-size: 0.875rem;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stat-item {
  text-align: center;
  padding: 16px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.stat-item .stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-item .stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Recent Prints */
.recent-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.recent-item-info {
  flex: 1;
  min-width: 0;
}

.recent-item-name {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recent-item-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.recent-item-savings {
  font-weight: 600;
  font-size: 0.875rem;
  padding: 4px 8px;
  border-radius: 4px;
}

.recent-item-savings.positive {
  color: var(--success);
  background: var(--success-bg);
}

.recent-item-savings.neutral {
  color: var(--text-secondary);
}

/* Section Header */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 1.25rem;
  margin: 0;
}

/* Prints List */
.prints-list,
.filaments-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.print-card,
.filament-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
}

.print-card-header,
.filament-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.print-card-title {
  font-weight: 600;
  font-size: 1rem;
}

.print-card-date {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.print-card-actions,
.filament-card-actions {
  display: flex;
  gap: 4px;
}

.print-card-details {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 12px;
}

.print-detail {
  display: flex;
  flex-direction: column;
}

.print-detail-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.print-detail-value {
  font-weight: 500;
  font-size: 0.9rem;
}

/* Comparisons within print card */
.print-comparisons {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 8px;
}

.print-comparisons-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.print-comparisons-header h4 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.comparison-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}

.comparison-info {
  flex: 1;
  min-width: 0;
}

.comparison-name {
  font-weight: 500;
  font-size: 0.875rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.comparison-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.comparison-savings {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--success);
  margin-left: 12px;
}

.comparison-actions {
  display: flex;
  gap: 4px;
  margin-left: 8px;
}

.print-savings-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--success-bg);
  border-radius: var(--radius-sm);
  margin-top: 8px;
}

.print-savings-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.print-savings-value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--success);
}

/* Filament Card */
.filament-color {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
  vertical-align: middle;
}

.filament-card-title {
  font-weight: 600;
  font-size: 1rem;
}

.filament-card-meta {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.filament-card-cost {
  margin-top: 8px;
  font-size: 0.875rem;
}

.filament-card-cost strong {
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

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

.btn-secondary:hover {
  background: var(--bg-card);
}

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

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

.btn-sm {
  padding: 6px 10px;
  font-size: 0.75rem;
}

.btn-icon {
  padding: 6px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

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

.btn-icon.danger:hover {
  background: var(--danger-bg);
  color: var(--danger);
}

.button-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-primary);
}

input[type="text"],
input[type="number"],
input[type="url"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="color"] {
  width: 60px;
  height: 40px;
  padding: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.help-text {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* Empty State */
.empty-state {
  text-align: center;
  color: var(--text-secondary);
  padding: 40px 20px;
  font-size: 0.9rem;
}

/* Danger Zone */
.danger-zone {
  border: 1px solid var(--danger);
}

.danger-zone h2 {
  color: var(--danger);
}

/* Side Menu */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 100;
}

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

.side-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  max-width: 80%;
  height: 100%;
  background: var(--bg-secondary);
  transform: translateX(100%);
  transition: transform 0.3s;
  z-index: 101;
  padding: 20px;
  overflow-y: auto;
}

.side-menu.active {
  transform: translateX(0);
}

.menu-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.menu-content {
  margin-top: 48px;
}

.menu-content h3 {
  margin-bottom: 12px;
}

.menu-content p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.menu-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.menu-content h4 {
  font-size: 0.875rem;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.menu-content ul {
  list-style: none;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.menu-content li {
  padding: 4px 0;
}

.menu-content li::before {
  content: "• ";
  color: var(--accent);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 200;
}

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

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
  transform: scale(0.9);
  transition: transform 0.3s;
  display: none;
}

.modal-overlay.active .modal.active {
  transform: scale(1);
  display: block;
}

.modal-sm {
  max-width: 360px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.25rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 0.875rem;
  box-shadow: var(--shadow);
  animation: toast-in 0.3s ease;
}

.toast.success {
  border-color: var(--success);
  background: var(--success-bg);
}

.toast.error {
  border-color: var(--danger);
  background: var(--danger-bg);
}

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

/* Responsive */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .button-group {
    flex-direction: column;
  }

  .button-group .btn {
    width: 100%;
    justify-content: center;
  }
}