/**
 * Shadcn/ui Inspired CSS Framework
 * Modern component-based design system for PHP Calendar App
 */

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

* {
  margin: 0;
}

:root {
  /* Colors - Shadcn/ui inspired 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: 220 13% 18%;
  --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: 220 13% 18%;
  --accent-foreground: 210 40% 98%;
  --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: 220 13% 18%;
  --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: 220 15% 25%;
  --primary-foreground: 210 40% 98%;
  --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: 220 15% 25%;
  --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: 220 15% 25%;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

body {
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-variation-settings: "opsz" 32;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
.h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 2.5rem;
}

.h2 {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 2.25rem;
}

.h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 2rem;
}

.h4 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.75rem;
}

.h5 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.5rem;
}

.h6 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.25rem;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.grid {
  display: grid;
}

.flex {
  display: flex;
}

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

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

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

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

.gap-2 {
  gap: 0.5rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-6 {
  gap: 1.5rem;
}

.gap-8 {
  gap: 2rem;
}

/* Spacing */
.p-2 {
  padding: 0.5rem;
}

.p-4 {
  padding: 1rem;
}

.p-6 {
  padding: 1.5rem;
}

.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}

.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.py-3 {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.m-4 {
  margin: 1rem;
}

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

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

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

/* Width & Height */
.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

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

/* Border Radius */
.rounded {
  border-radius: calc(var(--radius) - 2px);
}

.rounded-md {
  border-radius: calc(var(--radius) - 2px);
}

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

.rounded-xl {
  border-radius: calc(var(--radius) + 4px);
}

/* Shadows */
.shadow-sm {
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

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

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

/* Components */

/* 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;
  font-weight: 500;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
  border: none;
  text-decoration: none;
  user-select: none;
  position: relative;
  overflow: hidden;
}

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

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

/* Button Variants */
.btn-primary {
  background-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  height: 2.5rem;
  padding: 0 1rem;
}

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

.btn-secondary {
  background-color: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
  height: 2.5rem;
  padding: 0 1rem;
}

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

.btn-outline {
  border: 1px solid hsl(var(--border));
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  height: 2.5rem;
  padding: 0 1rem;
}

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

.btn-ghost {
  color: hsl(var(--foreground));
  height: 2.5rem;
  padding: 0 1rem;
}

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

.btn-destructive {
  background-color: hsl(var(--destructive));
  color: hsl(var(--destructive-foreground));
  height: 2.5rem;
  padding: 0 1rem;
}

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

/* Button Sizes */
.btn-sm {
  height: 2.25rem;
  border-radius: calc(var(--radius) - 2px);
  padding: 0 0.75rem;
  font-size: 0.75rem;
}

.btn-lg {
  height: 2.75rem;
  border-radius: calc(var(--radius) - 2px);
  padding: 0 2rem;
}

.btn-icon {
  height: 2.5rem;
  width: 2.5rem;
  padding: 0;
}

/* Card Component */
.card {
  border-radius: var(--radius);
  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 {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.025em;
}

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

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

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

/* Input Component */
.input {
  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: 0.5rem 0.75rem;
  font-size: 0.875rem;
  transition: all 0.2s ease-in-out;
}

.input:focus {
  outline: none;
  border-color: hsl(var(--ring));
  box-shadow: 0 0 0 2px hsl(var(--ring) / 0.2);
}

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

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

/* Label Component */
.label {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  color: hsl(var(--foreground));
}

.label:has(+ .input:disabled) {
  cursor: not-allowed;
  opacity: 0.7;
}

/* Select Component */
.select {
  position: relative;
}

.select-trigger {
  display: flex;
  height: 2.5rem;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid hsl(var(--border));
  background-color: hsl(var(--background));
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.select-trigger:focus {
  outline: none;
  border-color: hsl(var(--ring));
  box-shadow: 0 0 0 2px hsl(var(--ring) / 0.2);
}

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

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

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

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

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

/* Alert Component */
.alert {
  position: relative;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid hsl(var(--border));
  padding: 1rem;
  color: hsl(var(--foreground));
}

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

.alert-title {
  margin-bottom: 0.25rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.025em;
}

.alert-description {
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
}

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

.progress-indicator {
  height: 100%;
  width: 100%;
  flex: 1 1 0%;
  background-color: hsl(var(--primary));
  transition: all 0.2s ease-in-out;
}

/* Separator Component */
.separator {
  flex-shrink: 0;
  background-color: hsl(var(--border));
}

.separator-horizontal {
  height: 1px;
  width: 100%;
}

.separator-vertical {
  height: 100%;
  width: 1px;
}

/* Avatar Component */
.avatar {
  position: relative;
  display: flex;
  height: 2.5rem;
  width: 2.5rem;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 9999px;
}

.avatar-image {
  aspect-ratio: 1 / 1;
  height: 100%;
  width: 100%;
  object-fit: cover;
}

.avatar-fallback {
  display: flex;
  height: 100%;
  width: 100%;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background-color: hsl(var(--muted));
  color: hsl(var(--muted-foreground));
  font-size: 0.875rem;
  font-weight: 500;
}

/* Skeleton Component */
.skeleton {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  border-radius: calc(var(--radius) - 2px);
  background-color: hsl(var(--muted));
}

@keyframes pulse {
  50% {
    opacity: 0.5;
  }
}

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

.tabs-list {
  display: inline-flex;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  border-radius: calc(var(--radius) - 2px);
  background-color: hsl(var(--muted));
  padding: 0.25rem;
  color: hsl(var(--muted-foreground));
}

.tabs-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  border-radius: calc(var(--radius) - 4px);
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
  border: none;
  background: transparent;
  color: hsl(var(--muted-foreground));
}

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

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

.tabs-trigger[data-state="active"] {
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.tabs-content {
  margin-top: 0.5rem;
  border-radius: calc(var(--radius) - 2px);
}

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

/* Toast Component */
.toast {
  position: fixed;
  top: 0;
  z-index: 100;
  display: flex;
  max-height: 100vh;
  width: 100%;
  flex-direction: column-reverse;
  padding: 1rem;
  pointer-events: none;
}

.toast-viewport {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 100000;
  display: flex;
  max-height: 100vh;
  width: 420px;
  max-width: 100vw;
  flex-direction: column-reverse;
  padding: 1rem;
  transform: translateX(-50%);
  pointer-events: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 0.75rem;
  }
  
  .h1 {
    font-size: 1.875rem;
    line-height: 2.25rem;
  }
  
  .h2 {
    font-size: 1.5rem;
    line-height: 2rem;
  }
  
  .card-header,
  .card-content,
  .card-footer {
    padding: 1rem;
  }
}

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

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

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-slide-in {
  animation: slideIn 0.3s ease-out;
}