/* Finance Tracker - Modern UI based on shadcn/ui design system */

/* CSS Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

body {
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: hsl(0 0% 98%);
  color: hsl(222.2 84% 4.9%);
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

/* CSS Variables - Design System */
:root {
  --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: 221.2 83.2% 53.3%;
  --primary-foreground: 210 40% 98%;

  --secondary: 210 40% 96%;
  --secondary-foreground: 222.2 84% 4.9%;

  --muted: 210 40% 96%;
  --muted-foreground: 215.4 16.3% 46.9%;

  --accent: 210 40% 96%;
  --accent-foreground: 222.2 84% 4.9%;

  --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: 221.2 83.2% 53.3%;

  --success: 142.1 76.2% 36.3%;
  --warning: 47.9 95.8% 53.1%;
  --info: 199.0 89.0% 48.2%;

  --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: 217.2 91.2% 59.8%;
  --primary-foreground: 222.2 84% 4.9%;

  --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: 224.3 76.3% 94.0%;
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

.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)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

/* Spacing */
.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }

.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }

.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-4 { margin: 1rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }

/* Width & Height */
.w-full { width: 100%; }
.w-auto { width: auto; }
.h-full { height: 100%; }
.h-auto { height: auto; }
.min-h-screen { min-height: 100vh; }

/* Text */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }

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

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

/* Colors */
.text-foreground { color: hsl(var(--foreground)); }
.text-muted-foreground { color: hsl(var(--muted-foreground)); }
.text-primary { color: hsl(var(--primary)); }
.text-destructive { color: hsl(var(--destructive)); }
.text-success { color: hsl(var(--success)); }
.text-warning { color: hsl(var(--warning)); }

.bg-background { background-color: hsl(var(--background)); }
.bg-card { background-color: hsl(var(--card)); }
.bg-muted { background-color: hsl(var(--muted)); }
.bg-primary { background-color: hsl(var(--primary)); }
.bg-secondary { background-color: hsl(var(--secondary)); }
.bg-success { background-color: hsl(var(--success)); }
.bg-destructive { background-color: hsl(var(--destructive)); }
.bg-warning { background-color: hsl(var(--warning)); }

/* Component Styles */
.card {
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid hsl(var(--border));
  background-color: hsl(var(--card));
  color: hsl(var(--card-foreground));
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.card-header {
  display: flex;
  flex-direction: column;
  space-y: 1.5;
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.card-description {
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: hsl(var(--muted-foreground));
}

.card-content {
  padding: 1.5rem;
  padding-top: 0;
}

.card-footer {
  display: flex;
  align-items: center;
  padding: 1.5rem;
  padding-top: 0;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  border-radius: calc(var(--radius) - 2px);
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}

.btn:disabled {
  pointer-events: none;
  opacity: 0.5;
}

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

.btn-primary:hover {
  background-color: hsl(var(--primary) / 0.9);
}

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

.btn-secondary:hover {
  background-color: hsl(var(--secondary) / 0.8);
}

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

.btn-destructive:hover {
  background-color: hsl(var(--destructive) / 0.9);
}

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

.btn-outline:hover {
  background-color: hsl(var(--accent));
  color: hsl(var(--accent-foreground));
}

.btn-ghost {
  background-color: transparent;
}

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

.btn-sm {
  height: 2.25rem;
  border-radius: calc(var(--radius) - 4px);
  padding-left: 0.75rem;
  padding-right: 0.75rem;
  font-size: 0.75rem;
  line-height: 1rem;
}

.btn-md {
  height: 2.5rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

.btn-lg {
  height: 2.75rem;
  border-radius: calc(var(--radius) - 2px);
  padding-left: 2rem;
  padding-right: 2rem;
}

/* Form Components */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-control {
  display: flex;
  height: 2.5rem;
  width: 100%;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid hsl(var(--border));
  background-color: hsl(var(--background));
  padding-left: 0.75rem;
  padding-right: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: 0 0 0 2px hsl(var(--ring));
}

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

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

textarea.form-control {
  height: auto;
  min-height: 5rem;
  resize: vertical;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

/* Table Component */
.table-container {
  position: relative;
  width: 100%;
  overflow: auto;
}

.table {
  width: 100%;
  caption-side: bottom;
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.table th {
  height: 3rem;
  padding-left: 1rem;
  padding-right: 1rem;
  text-align: left;
  font-weight: 500;
  color: hsl(var(--muted-foreground));
  border-bottom: 1px solid hsl(var(--border));
}

.table td {
  padding: 1rem;
  vertical-align: middle;
  border-bottom: 1px solid hsl(var(--border));
}

.table tr:last-child td {
  border-bottom: none;
}

.table tbody tr:hover {
  background-color: hsl(var(--muted) / 0.5);
}

/* Alert Component */
.alert {
  position: relative;
  width: 100%;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid hsl(var(--border));
  padding: 1rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  margin-bottom: 1rem;
}

.alert-success {
  border-color: hsl(var(--success) / 0.5);
  color: hsl(var(--success));
  background-color: hsl(var(--success) / 0.1);
}

.alert-error {
  border-color: hsl(var(--destructive) / 0.5);
  color: hsl(var(--destructive));
  background-color: hsl(var(--destructive) / 0.1);
}

.alert-warning {
  border-color: hsl(var(--warning) / 0.5);
  color: hsl(var(--warning));
  background-color: hsl(var(--warning) / 0.1);
}

.alert-info {
  border-color: hsl(var(--info) / 0.5);
  color: hsl(var(--info));
  background-color: hsl(var(--info) / 0.1);
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 9999px;
  padding-left: 0.625rem;
  padding-right: 0.625rem;
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
  font-size: 0.75rem;
  line-height: 1rem;
  font-weight: 600;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

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

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

.badge-success {
  background-color: hsl(var(--success));
  color: white;
}

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

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

/* Sidebar Navigation */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 16rem;
  background-color: hsl(var(--card));
  border-right: 1px solid hsl(var(--border));
  padding: 1.5rem;
  z-index: 40;
}

.sidebar-content {
  height: 100%;
  overflow-y: auto;
}

.sidebar-header {
  margin-bottom: 2rem;
}

.sidebar-nav {
  space-y: 0.5rem;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-radius: calc(var(--radius) - 2px);
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  color: hsl(var(--muted-foreground));
  text-decoration: none;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

.sidebar-nav-item:hover {
  color: hsl(var(--foreground));
  background-color: hsl(var(--accent));
}

.sidebar-nav-item.active {
  color: hsl(var(--foreground));
  background-color: hsl(var(--accent));
}

.sidebar-nav-item svg {
  margin-right: 0.5rem;
  height: 1rem;
  width: 1rem;
}

/* Main Content */
.main-content {
  margin-left: 16rem;
  padding: 2rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid hsl(var(--border));
}

.page-title {
  font-size: 1.875rem;
  line-height: 2.25rem;
  font-weight: 700;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  .grid-cols-2 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  
  .main-content {
    padding: 1rem;
  }
  
  .container {
    padding: 0 0.5rem;
  }
}