/* ============================================================
   MAOO Design System — GitHub-inspired, premium feel
   ============================================================ */

:root {
  /* Background */
  --maoo-bg-canvas: #ffffff;
  --maoo-bg-primary: #f6f8fa;
  --maoo-bg-secondary: #f3f4f6;
  --maoo-bg-tertiary: #e8eaed;

  /* Surface / Cards */
  --maoo-surface: #ffffff;
  --maoo-surface-hover: #f6f8fa;

  /* Border */
  --maoo-border-default: #d0d7de;
  --maoo-border-muted: #d8dee4;
  --maoo-border-subtle: #e8eaed;

  /* Text */
  --maoo-text-primary: #1f2328;
  --maoo-text-secondary: #656d76;
  --maoo-text-tertiary: #8b949e;
  --maoo-text-link: #0969da;
  --maoo-text-inverse: #ffffff;

  /* Accent — Green */
  --maoo-accent: #2da44e;
  --maoo-accent-hover: #2c974b;
  --maoo-accent-active: #298e46;
  --maoo-accent-subtle: #dafbe1;
  --maoo-accent-emphasis: #1f883d;

  /* Status */
  --maoo-danger: #cf222e;
  --maoo-danger-hover: #a40e26;
  --maoo-danger-subtle: #ffebe9;
  --maoo-warning: #bf8700;
  --maoo-warning-subtle: #fff8c5;
  --maoo-info: #0969da;
  --maoo-info-subtle: #ddf4ff;
  --maoo-purple: #8250df;
  --maoo-purple-subtle: #fbefff;

  /* Header */
  --maoo-header-bg: #24292f;
  --maoo-header-text: #ffffff;
  --maoo-header-text-secondary: #8b949e;

  /* Radius */
  --maoo-radius-sm: 6px;
  --maoo-radius-md: 8px;
  --maoo-radius-lg: 12px;
  --maoo-radius-xl: 16px;
  --maoo-radius-full: 9999px;

  /* Shadow */
  --maoo-shadow-sm: 0 1px 2px rgba(31, 35, 40, 0.04);
  --maoo-shadow-md: 0 4px 12px rgba(31, 35, 40, 0.06);
  --maoo-shadow-lg: 0 8px 24px rgba(31, 35, 40, 0.08);
  --maoo-shadow-xl: 0 16px 48px rgba(31, 35, 40, 0.12);
  --maoo-shadow-card: 0 1px 3px rgba(31, 35, 40, 0.04), 0 3px 12px rgba(31, 35, 40, 0.06);

  /* Typography */
  --maoo-font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans',
    Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  --maoo-font-mono: ui-monospace, 'SF Mono', 'Fira Code', 'Fira Mono', Menlo,
    Consolas, 'Liberation Mono', monospace;

  /* Spacing */
  --maoo-space-1: 4px;
  --maoo-space-2: 8px;
  --maoo-space-3: 12px;
  --maoo-space-4: 16px;
  --maoo-space-5: 20px;
  --maoo-space-6: 24px;
  --maoo-space-8: 32px;
  --maoo-space-10: 40px;
  --maoo-space-12: 48px;
  --maoo-space-16: 64px;

  /* Transition */
  --maoo-transition-fast: 120ms ease;
  --maoo-transition-normal: 200ms ease;
  --maoo-transition-slow: 300ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --maoo-max-width: 1200px;
  --maoo-header-height: 56px;
}

/* ============================================================
   Reset & Base
   ============================================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--maoo-font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--maoo-text-primary);
  background: var(--maoo-bg-primary);
  min-height: 100vh;
}

a {
  color: var(--maoo-text-link);
  text-decoration: none;
  transition: color var(--maoo-transition-fast);
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

/* ============================================================
   Header / Nav
   ============================================================ */

.maoo-header {
  background: var(--maoo-header-bg);
  color: var(--maoo-header-text);
  height: var(--maoo-header-height);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.maoo-header-inner {
  max-width: var(--maoo-max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--maoo-space-6);
}

.maoo-header-logo {
  display: flex;
  align-items: center;
  gap: var(--maoo-space-3);
  color: var(--maoo-header-text);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.3px;
  text-decoration: none;
}

.maoo-header-logo:hover {
  text-decoration: none;
  opacity: 0.9;
}

.maoo-header-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--maoo-accent);
  border-radius: var(--maoo-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.maoo-header-nav {
  display: flex;
  align-items: center;
  gap: var(--maoo-space-1);
}

.maoo-header-nav a {
  color: var(--maoo-header-text);
  padding: var(--maoo-space-2) var(--maoo-space-3);
  border-radius: var(--maoo-radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--maoo-transition-fast);
  text-decoration: none;
}

.maoo-header-nav a:hover {
  background: rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.maoo-header-actions {
  display: flex;
  align-items: center;
  gap: var(--maoo-space-3);
}

.maoo-header-user {
  display: flex;
  align-items: center;
  gap: var(--maoo-space-2);
  font-size: 13px;
  color: var(--maoo-header-text-secondary);
}

.maoo-header-user strong {
  color: var(--maoo-header-text);
  font-weight: 600;
}

/* ============================================================
   Buttons
   ============================================================ */

.maoo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--maoo-space-2);
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--maoo-font-sans);
  line-height: 20px;
  border: 1px solid var(--maoo-border-default);
  border-radius: var(--maoo-radius-md);
  background: var(--maoo-surface);
  color: var(--maoo-text-primary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--maoo-transition-fast);
  text-decoration: none;
  user-select: none;
}

.maoo-btn:hover {
  background: var(--maoo-bg-secondary);
  text-decoration: none;
}

.maoo-btn:active {
  background: var(--maoo-bg-tertiary);
}

.maoo-btn-primary {
  background: var(--maoo-accent);
  color: #fff;
  border-color: var(--maoo-accent);
}

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

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

.maoo-btn-danger {
  color: var(--maoo-danger);
  border-color: var(--maoo-danger);
}

.maoo-btn-danger:hover {
  background: var(--maoo-danger-subtle);
}

.maoo-btn-danger-fill {
  background: var(--maoo-danger);
  color: #fff;
  border-color: var(--maoo-danger);
}

.maoo-btn-danger-fill:hover {
  background: var(--maoo-danger-hover);
}

.maoo-btn-sm {
  padding: 3px 12px;
  font-size: 12px;
  line-height: 20px;
  border-radius: var(--maoo-radius-sm);
}

.maoo-btn-lg {
  padding: 10px 24px;
  font-size: 16px;
  border-radius: var(--maoo-radius-md);
}

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

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

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

/* ============================================================
   Forms
   ============================================================ */

.maoo-form-group {
  margin-bottom: var(--maoo-space-4);
}

.maoo-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--maoo-text-primary);
  margin-bottom: var(--maoo-space-1);
}

.maoo-input {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  font-family: var(--maoo-font-sans);
  line-height: 20px;
  color: var(--maoo-text-primary);
  background: var(--maoo-surface);
  border: 1px solid var(--maoo-border-default);
  border-radius: var(--maoo-radius-md);
  outline: none;
  transition: all var(--maoo-transition-fast);
}

.maoo-input::placeholder {
  color: var(--maoo-text-tertiary);
}

.maoo-input:focus {
  border-color: var(--maoo-accent);
  box-shadow: 0 0 0 3px var(--maoo-accent-subtle);
}

.maoo-input.error {
  border-color: var(--maoo-danger);
}

.maoo-input.error:focus {
  box-shadow: 0 0 0 3px var(--maoo-danger-subtle);
}

.maoo-checkbox-group {
  display: flex;
  align-items: center;
  gap: var(--maoo-space-2);
  cursor: pointer;
  font-size: 14px;
  user-select: none;
}

.maoo-checkbox-group input[type='checkbox'] {
  width: 16px;
  height: 16px;
  accent-color: var(--maoo-accent);
  cursor: pointer;
}

.maoo-hint {
  font-size: 12px;
  color: var(--maoo-text-tertiary);
  margin-top: var(--maoo-space-1);
}

.maoo-error-text {
  font-size: 12px;
  color: var(--maoo-danger);
  margin-top: var(--maoo-space-1);
}

/* ============================================================
   Cards
   ============================================================ */

.maoo-card {
  background: var(--maoo-surface);
  border: 1px solid var(--maoo-border-default);
  border-radius: var(--maoo-radius-lg);
  padding: var(--maoo-space-6);
  transition: all var(--maoo-transition-normal);
}

.maoo-card-hover:hover {
  border-color: var(--maoo-border-muted);
  box-shadow: var(--maoo-shadow-card);
  transform: translateY(-1px);
}

.maoo-card-header {
  font-size: 16px;
  font-weight: 700;
  color: var(--maoo-text-primary);
  margin-bottom: var(--maoo-space-4);
}

/* ============================================================
   Status Badges
   ============================================================ */

.maoo-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--maoo-radius-full);
  line-height: 20px;
}

.maoo-badge-success {
  background: var(--maoo-accent-subtle);
  color: var(--maoo-accent-emphasis);
}

.maoo-badge-warning {
  background: var(--maoo-warning-subtle);
  color: var(--maoo-warning);
}

.maoo-badge-danger {
  background: var(--maoo-danger-subtle);
  color: var(--maoo-danger);
}

.maoo-badge-info {
  background: var(--maoo-info-subtle);
  color: var(--maoo-info);
}

.maoo-badge-neutral {
  background: var(--maoo-bg-secondary);
  color: var(--maoo-text-secondary);
}

.maoo-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.maoo-badge-dot.green {
  background: var(--maoo-accent);
  box-shadow: 0 0 0 2px var(--maoo-accent-subtle);
}

.maoo-badge-dot.gray {
  background: var(--maoo-text-tertiary);
}

/* ============================================================
   Layout utilities
   ============================================================ */

.maoo-container {
  max-width: var(--maoo-max-width);
  margin: 0 auto;
  padding: 0 var(--maoo-space-6);
}

.maoo-page {
  padding: var(--maoo-space-8) 0;
  min-height: calc(100vh - var(--maoo-header-height));
}

.maoo-page-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--maoo-text-primary);
  margin-bottom: var(--maoo-space-2);
}

.maoo-page-subtitle {
  font-size: 14px;
  color: var(--maoo-text-secondary);
  margin-bottom: var(--maoo-space-6);
}

/* ============================================================
   Grid
   ============================================================ */

.maoo-grid {
  display: grid;
  gap: var(--maoo-space-5);
}

.maoo-grid-2 { grid-template-columns: repeat(2, 1fr); }
.maoo-grid-3 { grid-template-columns: repeat(3, 1fr); }
.maoo-grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .maoo-grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .maoo-grid-3,
  .maoo-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .maoo-grid-2 { grid-template-columns: 1fr; }
  .maoo-header-inner { padding: 0 var(--maoo-space-4); }
}

@media (max-width: 480px) {
  .maoo-grid-2,
  .maoo-grid-3,
  .maoo-grid-4 { grid-template-columns: 1fr; }
}

/* ============================================================
   Loading, Empty, Error states
   ============================================================ */

.maoo-state {
  text-align: center;
  padding: var(--maoo-space-16) var(--maoo-space-6);
}

.maoo-state-icon {
  font-size: 48px;
  margin-bottom: var(--maoo-space-4);
  opacity: 0.6;
}

.maoo-state-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--maoo-text-primary);
  margin-bottom: var(--maoo-space-2);
}

.maoo-state-desc {
  font-size: 14px;
  color: var(--maoo-text-secondary);
  max-width: 400px;
  margin: 0 auto;
}

/* ============================================================
   Spinner
   ============================================================ */

.maoo-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--maoo-border-default);
  border-top-color: var(--maoo-accent);
  border-radius: 50%;
  animation: maoo-spin 0.6s linear infinite;
  display: inline-block;
}

@keyframes maoo-spin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   Toast / Alert
   ============================================================ */

.maoo-alert {
  padding: var(--maoo-space-3) var(--maoo-space-4);
  border-radius: var(--maoo-radius-md);
  font-size: 13px;
  margin-bottom: var(--maoo-space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--maoo-space-2);
}

.maoo-alert-success {
  background: var(--maoo-accent-subtle);
  color: var(--maoo-accent-emphasis);
  border: 1px solid #b9e6c6;
}

.maoo-alert-error {
  background: var(--maoo-danger-subtle);
  color: var(--maoo-danger);
  border: 1px solid #fec8ce;
}

.maoo-alert-info {
  background: var(--maoo-info-subtle);
  color: var(--maoo-info);
  border: 1px solid #b6e3ff;
}

.maoo-alert-warning {
  background: var(--maoo-warning-subtle);
  color: var(--maoo-warning);
  border: 1px solid #fbe090;
}

/* ============================================================
   Footer
   ============================================================ */

.maoo-footer {
  border-top: 1px solid var(--maoo-border-default);
  padding: var(--maoo-space-6) 0;
  text-align: center;
  font-size: 12px;
  color: var(--maoo-text-tertiary);
}