/* Shadcn-inspired Modern Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors - shadcn palette */
  --background: 0 0% 100%;
  --foreground: 222.2 84% 4.9%;
  --card: 0 0% 100%;
  --card-foreground: 222.2 84% 4.9%;
  --popover: 0 0% 100%;
  --popover-foreground: 222.2 84% 4.9%;
  --primary: 222.2 47.4% 11.2%;
  --primary-foreground: 210 40% 98%;
  --secondary: 210 40% 96.1%;
  --secondary-foreground: 222.2 47.4% 11.2%;
  --muted: 210 40% 96.1%;
  --muted-foreground: 215.4 16.3% 46.9%;
  --accent: 210 40% 96.1%;
  --accent-foreground: 222.2 47.4% 11.2%;
  --destructive: 0 84.2% 60.2%;
  --destructive-foreground: 210 40% 98%;
  --border: 214.3 31.8% 91.4%;
  --input: 214.3 31.8% 91.4%;
  --ring: 222.2 84% 4.9%;
  --radius: 0.5rem;
}

.dark {
  --background: 222.2 84% 4.9%;
  --foreground: 210 40% 98%;
  --card: 222.2 84% 4.9%;
  --card-foreground: 210 40% 98%;
  --popover: 222.2 84% 4.9%;
  --popover-foreground: 210 40% 98%;
  --primary: 210 40% 98%;
  --primary-foreground: 222.2 47.4% 11.2%;
  --secondary: 217.2 32.6% 17.5%;
  --secondary-foreground: 210 40% 98%;
  --muted: 217.2 32.6% 17.5%;
  --muted-foreground: 215 20.2% 65.1%;
  --accent: 217.2 32.6% 17.5%;
  --accent-foreground: 210 40% 98%;
  --destructive: 0 62.8% 30.6%;
  --destructive-foreground: 210 40% 98%;
  --border: 217.2 32.6% 17.5%;
  --input: 217.2 32.6% 17.5%;
  --ring: 212.7 26.8% 83.9%;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Card Component */
.card {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid hsl(var(--border));
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: hsl(var(--card-foreground));
}

.card-description {
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
  margin-top: 0.25rem;
}

.card-content {
  padding: 1.5rem;
}

.card-footer {
  padding: 1.5rem;
  border-top: 1px solid hsl(var(--border));
  display: flex;
  gap: 0.5rem;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.625rem 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  outline: none;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

.btn-primary:hover:not(:disabled) {
  background: hsl(var(--primary) / 0.9);
  transform: translateY(-1px);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

.btn-secondary {
  background: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
}

.btn-secondary:hover:not(:disabled) {
  background: hsl(var(--secondary) / 0.8);
}

.btn-outline {
  border: 1px solid hsl(var(--border));
  background: transparent;
  color: hsl(var(--foreground));
}

.btn-outline:hover:not(:disabled) {
  background: hsl(var(--accent));
}

.btn-ghost {
  background: transparent;
  color: hsl(var(--foreground));
}

.btn-ghost:hover:not(:disabled) {
  background: hsl(var(--accent));
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
}

/* Input Component */
.input {
  display: flex;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid hsl(var(--input));
  background: hsl(var(--background));
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  outline: none;
}

.input:focus {
  border-color: hsl(var(--ring));
  box-shadow: 0 0 0 3px hsl(var(--ring) / 0.1);
}

.input::placeholder {
  color: hsl(var(--muted-foreground));
}

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

/* Label Component */
.label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: hsl(var(--foreground));
}

/* Form Group */
.form-group {
  margin-bottom: 1.5rem;
}

/* Tabs Component */
.tabs {
  width: 100%;
}

.tabs-list {
  display: inline-flex;
  padding: 0.25rem;
  background: hsl(var(--muted));
  border-radius: var(--radius);
  gap: 0.25rem;
}

.tabs-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: calc(var(--radius) - 0.25rem);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: transparent;
  color: hsl(var(--muted-foreground));
  transition: all 0.2s ease;
}

.tabs-trigger:hover {
  background: hsl(var(--background));
  color: hsl(var(--foreground));
}

.tabs-trigger.active {
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.tabs-content {
  margin-top: 1rem;
  display: none;
}

.tabs-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 9999px;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.badge-default {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

.badge-secondary {
  background: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
}

.badge-outline {
  border-color: hsl(var(--border));
  color: hsl(var(--foreground));
}

/* Alert Component */
.alert {
  position: relative;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid hsl(var(--border));
  margin-bottom: 1rem;
}

.alert-success {
  background: hsl(142.1 76.2% 36.3% / 0.1);
  border-color: hsl(142.1 76.2% 36.3% / 0.2);
  color: hsl(142.1 70.6% 45.3%);
}

.alert-error {
  background: hsl(var(--destructive) / 0.1);
  border-color: hsl(var(--destructive) / 0.2);
  color: hsl(var(--destructive));
}

.alert-warning {
  background: hsl(38 92% 50% / 0.1);
  border-color: hsl(38 92% 50% / 0.2);
  color: hsl(32.1 94.6% 43.7%);
}

.alert-info {
  background: hsl(221.2 83.2% 53.3% / 0.1);
  border-color: hsl(221.2 83.2% 53.3% / 0.2);
  color: hsl(221.2 83.2% 53.3%);
}

/* Progress Component */
.progress {
  position: relative;
  height: 1rem;
  width: 100%;
  overflow: hidden;
  border-radius: 9999px;
  background: hsl(var(--secondary));
}

.progress-bar {
  height: 100%;
  background: hsl(var(--primary));
  transition: width 0.3s ease;
  border-radius: 9999px;
}

.progress-bar-animated {
  animation: progress-shimmer 2s ease-in-out infinite;
  background: linear-gradient(
    90deg,
    hsl(var(--primary)),
    hsl(var(--primary) / 0.8),
    hsl(var(--primary))
  );
  background-size: 200% 100%;
}

@keyframes progress-shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.animate-fade-in {
  animation: fadeIn 0.3s ease;
}

.animate-slide-in {
  animation: slideIn 0.4s ease;
}

.animate-slide-up {
  animation: slideUp 0.4s ease;
}

/* Utility Classes */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: 0.25rem;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-6 {
  gap: 1.5rem;
}

.w-full {
  width: 100%;
}

.h-screen {
  height: 100vh;
}

.min-h-screen {
  min-height: 100vh;
}

.text-center {
  text-align: center;
}

.text-sm {
  font-size: 0.875rem;
}

.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-muted {
  color: hsl(var(--muted-foreground));
}

.mt-2 {
  margin-top: 0.5rem;
}

.mt-4 {
  margin-top: 1rem;
}

.mt-6 {
  margin-top: 1.5rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-6 {
  margin-bottom: 1.5rem;
}

.p-4 {
  padding: 1rem;
}

.p-6 {
  padding: 1.5rem;
}

.p-8 {
  padding: 2rem;
}

.rounded {
  border-radius: var(--radius);
}

.rounded-lg {
  border-radius: calc(var(--radius) * 1.5);
}

.shadow {
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.shadow-lg {
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Grid System */
.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (min-width: 768px) {
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .md\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .card {
    border-radius: calc(var(--radius) / 2);
  }

  .tabs-list {
    width: 100%;
    flex-wrap: wrap;
  }
}