/* ── Design Tokens ────────────────────────────────────── */
:root {
  /* Brand colors */
  --color-primary: #23a1eb;
  --color-primary-hover: #1d8fd1;
  --color-secondary: #1877f2;
  --color-tertiary: #5865f2;

  /* Surface colors (light) */
  --surface-base: #ffffff;
  --surface-raised: #f8fafc;
  --surface-overlay: #f1f5f9;
  --surface-border: #e2e8f0;
  --surface-hover: #f1f5f9;

  /* Text colors (light) */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --text-inverse: #ffffff;

  /* Semantic colors */
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* AI semantic colors */
  --color-ai-flagged: #ef4444;
  --color-ai-clean: #22c55e;
  --color-ai-warn: #f59e0b;
  --color-ai-pending: #94a3b8;
  --color-ai-processing: #3b82f6;
  --color-ai-error: #dc2626;
  --color-ai-deleted: #6b7280;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* Glows */
  --glow-primary: 0 0 20px rgba(35, 161, 235, 0.3);
  --glow-error: 0 0 20px rgba(239, 68, 68, 0.3);

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Sidebar */
  --sidebar-width: 256px;
  --sidebar-collapsed-width: 64px;

  /* Header */
  --header-height: 56px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-index layers */
  --z-sidebar: 30;
  --z-header: 20;
  --z-overlay: 40;
  --z-modal: 50;
  --z-toast: 60;
}

[data-theme="dark"] {
  --surface-base: #0f172a;
  --surface-raised: #1e293b;
  --surface-overlay: #334155;
  --surface-border: #334155;
  --surface-hover: #1e293b;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #0f172a;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4);

  --glow-primary: 0 0 20px rgba(35, 161, 235, 0.15);
  --glow-error: 0 0 20px rgba(239, 68, 68, 0.15);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--surface-base);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

/* ── Scrollbar ────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* ── Layout Utilities ─────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

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

.w-full { width: 100%; }
.h-full { height: 100%; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-primary-color { color: var(--color-primary); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }

.ml-auto { margin-left: auto; }
.mr-2 { margin-right: var(--space-2); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }

.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.px-3 { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.overflow-auto { overflow: auto; }
.overflow-hidden { overflow: hidden; }
.overflow-y-auto { overflow-y: auto; }

.hidden { display: none; }
.invisible { visibility: hidden; }
.cursor-pointer { cursor: pointer; }
.select-none { user-select: none; }

/* ── Button ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}
.btn-secondary {
  background: var(--surface-raised);
  color: var(--text-primary);
  border-color: var(--surface-border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--color-primary);
}
.btn-tertiary {
  background: transparent;
  color: var(--text-primary);
}
.btn-tertiary:hover:not(:disabled) {
  background: var(--surface-hover);
}
.btn-destructive {
  background: var(--color-error);
  color: white;
}
.btn-destructive:hover:not(:disabled) {
  background: #dc2626;
}
.btn-outline {
  background: transparent;
  border-color: var(--surface-border);
  color: var(--text-primary);
}
.btn-outline:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--color-primary);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
}
.btn-ghost:hover:not(:disabled) {
  background: var(--surface-hover);
  color: var(--text-primary);
}
.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  padding: 0;
  text-decoration: none;
}
.btn-link:hover:not(:disabled) {
  text-decoration: underline;
}
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-icon { padding: 0.5rem; }
.btn-icon-sm { padding: 0.25rem; }

/* ── Badge ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.25rem;
  background: var(--surface-raised);
  color: var(--text-secondary);
  border: 1px solid var(--surface-border);
}
.badge-primary { background: color-mix(in srgb, var(--color-primary) 15%, transparent); color: var(--color-primary); border-color: transparent; }
.badge-success { background: color-mix(in srgb, var(--color-success) 15%, transparent); color: var(--color-success); border-color: transparent; }
.badge-warning { background: color-mix(in srgb, var(--color-warning) 15%, transparent); color: var(--color-warning); border-color: transparent; }
.badge-destructive { background: color-mix(in srgb, var(--color-error) 15%, transparent); color: var(--color-error); border-color: transparent; }
.badge-outline { background: transparent; border-color: var(--surface-border); }
.badge-info { background: color-mix(in srgb, var(--color-info) 15%, transparent); color: var(--color-info); border-color: transparent; }

/* ── Card ─────────────────────────────────────────────── */
.card {
  background: var(--surface-base);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card-elevated {
  box-shadow: var(--shadow-md);
}
.card-bordered {
  border-width: 1px;
}
.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--surface-border);
}
.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}
.card-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--space-1);
}
.card-content {
  padding: var(--space-6);
}
.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--surface-border);
}

/* ── Input ────────────────────────────────────────────── */
.input {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--surface-raised);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  line-height: 1.25rem;
  transition: all var(--transition-fast);
  outline: none;
}
.input::placeholder {
  color: var(--text-tertiary);
}
.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(35, 161, 235, 0.15);
}
.input-soft {
  background: var(--surface-overlay);
  border-color: transparent;
}
.input-soft:focus {
  background: var(--surface-base);
  border-color: var(--color-primary);
}
.input[aria-invalid="true"],
.input-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.select {
  display: block;
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  background: var(--surface-raised);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  line-height: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
}
.select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(35, 161, 235, 0.15);
}

/* ── Skeleton ─────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--surface-overlay) 25%, var(--surface-hover) 50%, var(--surface-overlay) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}
.skeleton-circular {
  border-radius: 50%;
}
.skeleton-rectangular {
  border-radius: 0;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Tabs ─────────────────────────────────────────────── */
.tabs { display: flex; flex-direction: column; }
.tab-list {
  display: flex;
  border-bottom: 1px solid var(--surface-border);
  gap: 0;
}
.tab-trigger {
  padding: 0.5rem 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.tab-trigger:hover {
  color: var(--text-primary);
}
.tab-trigger[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.tab-content {
  padding-top: var(--space-4);
}

/* ── ScrollArea ───────────────────────────────────────── */
.scroll-area {
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) transparent;
}

/* ── Status Badge ─────────────────────────────────────── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}
.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.status-badge-flagged {
  background: color-mix(in srgb, var(--color-ai-flagged) 15%, transparent);
  color: var(--color-ai-flagged);
}
.status-badge-flagged::before { background: var(--color-ai-flagged); }
.status-badge-clean {
  background: color-mix(in srgb, var(--color-ai-clean) 15%, transparent);
  color: var(--color-ai-clean);
}
.status-badge-clean::before { background: var(--color-ai-clean); }
.status-badge-warn {
  background: color-mix(in srgb, var(--color-ai-warn) 15%, transparent);
  color: var(--color-ai-warn);
}
.status-badge-warn::before { background: var(--color-ai-warn); }
.status-badge-pending {
  background: color-mix(in srgb, var(--color-ai-pending) 15%, transparent);
  color: var(--color-ai-pending);
}
.status-badge-pending::before { background: var(--color-ai-pending); }
.status-badge-processing {
  background: color-mix(in srgb, var(--color-ai-processing) 15%, transparent);
  color: var(--color-ai-processing);
}
.status-badge-processing::before {
  background: var(--color-ai-processing);
  animation: pulse-dot 1.5s ease-in-out infinite;
}
.status-badge-error {
  background: color-mix(in srgb, var(--color-ai-error) 15%, transparent);
  color: var(--color-ai-error);
}
.status-badge-error::before { background: var(--color-ai-error); }
.status-badge-deleted {
  background: color-mix(in srgb, var(--color-ai-deleted) 15%, transparent);
  color: var(--color-ai-deleted);
}
.status-badge-deleted::before { background: var(--color-ai-deleted); }
.status-badge-none {
  background: var(--surface-raised);
  color: var(--text-tertiary);
}
.status-badge-none::before { background: var(--text-tertiary); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ── Toast ────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.75rem 1rem;
  background: var(--surface-base);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 300px;
  max-width: 420px;
  pointer-events: auto;
  animation: slide-in-right var(--transition-normal) ease-out;
}
.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-error); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-info); }
.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0.25rem;
}

/* ── Modal ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fade-in var(--transition-fast) ease-out;
}
.modal-content {
  background: var(--surface-base);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 90vw;
  max-height: 85vh;
  overflow: auto;
  animation: scale-in var(--transition-normal) ease-out;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--surface-border);
}
.modal-body {
  padding: var(--space-6);
}
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--surface-border);
}

/* ── Empty State ──────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  text-align: center;
  color: var(--text-tertiary);
}
.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}
.empty-state-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.empty-state-description {
  font-size: 0.875rem;
  max-width: 300px;
}

/* ── Animations ───────────────────────────────────────── */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scale-in {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes bar-pulse {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.6); }
}
@keyframes glow-pulse {
  0%, 100% { box-shadow: var(--glow-primary); }
  50% { box-shadow: 0 0 30px rgba(35, 161, 235, 0.5); }
}
@keyframes notification-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
@keyframes mascot-wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-5deg); }
  75% { transform: rotate(5deg); }
}

.animate-fade-in { animation: fade-in var(--transition-normal) ease-out; }
.animate-fade-in-up { animation: fade-in-up var(--transition-normal) ease-out; }
.animate-scale-in { animation: scale-in var(--transition-normal) ease-out; }
.animate-slide-in-right { animation: slide-in-right var(--transition-normal) ease-out; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Grid Pattern Background ──────────────────────────── */
.grid-pattern {
  background-image:
    linear-gradient(var(--surface-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--surface-border) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── Particle Background ──────────────────────────────── */
.particle-bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.particle-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
}
.particle-orb:nth-child(1) {
  width: 500px;
  height: 500px;
  top: -100px;
  right: -100px;
  background: var(--color-primary);
}
.particle-orb:nth-child(2) {
  width: 400px;
  height: 400px;
  bottom: -100px;
  left: -100px;
  background: var(--color-tertiary);
}
.particle-orb:nth-child(3) {
  width: 300px;
  height: 300px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-secondary);
}
@media (max-width: 768px) {
  .particle-bg { display: none; }
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 768px) {
  .grid-cols-2 { grid-template-columns: 1fr; }
  .grid-cols-3 { grid-template-columns: 1fr; }
  .hide-mobile { display: none !important; }
}
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}