/**
 * Component Styles
 * 
 * Version: 1.0.0
 * Last Updated: 2026-03-05
 * 
 * This file contains all component styles for the WeLiveTogether Design System.
 * Import AFTER design-tokens.css.
 * 
 * Components included:
 * - Buttons (primary, secondary, tertiary)
 * - Form Inputs (text, email, password, textarea, select)
 * - Cards
 * - Progress Bars
 * - Badges
 * - Skeleton Loaders
 * - Empty States
 * - Navigation
 * - Modals
 */

/* ============================================
   BASE STYLES
   ============================================ */

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  /* Base button styles */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--button-height);
  padding: 12px 24px;
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-decoration: none;
  border: none;
  border-radius: var(--button-radius);
  cursor: pointer;
  transition: all var(--transition-button);
  white-space: nowrap;
  user-select: none;
  gap: var(--space-sm);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn:disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary-navy);
  color: var(--color-bg-white);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-hover-navy);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-active-navy);
  transform: translateY(1px);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--color-bg-white);
  color: var(--color-primary-navy);
  border: 2px solid var(--color-primary-navy);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-grey);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--color-hover-grey);
  transform: translateY(1px);
}

/* Tertiary Button (Text Link Style) */
.btn-tertiary {
  background-color: transparent;
  color: var(--color-secondary-teal);
  padding: 8px 12px;
  min-height: auto;
}

.btn-tertiary:hover:not(:disabled) {
  text-decoration: underline;
  opacity: var(--opacity-hover);
}

/* Button Sizes */
.btn-small {
  min-height: 36px;
  padding: 8px 16px;
  font-size: var(--font-size-body-small);
}

.btn-large {
  min-height: 52px;
  padding: 16px 32px;
  font-size: 18px;
}

/* Full-width button */
.btn-block {
  width: 100%;
}

/* ============================================
   FORM INPUTS
   ============================================ */

/* Label */
.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-body-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-error);
}

/* Input Group */
.form-group {
  margin-bottom: var(--space-lg);
}

/* Text Input, Select, Textarea Base */
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: var(--input-height);
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-grey);
  border-radius: var(--input-radius);
  transition: all var(--transition-input);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

/* Focus State */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-secondary-teal);
  box-shadow: var(--shadow-focus);
}

/* Error State */
.form-input--error,
.form-select--error,
.form-textarea--error {
  border-color: var(--color-error);
}

.form-input--error:focus,
.form-select--error:focus,
.form-textarea--error:focus {
  box-shadow: var(--shadow-focus-error);
}

/* Success State */
.form-input--success {
  border-color: var(--color-success);
}

/* Disabled State */
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background-color: var(--color-surface-grey);
  color: var(--color-text-muted);
  cursor: not-allowed;
  opacity: var(--opacity-disabled);
}

/* Textarea Specific */
.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-height-body);
}

/* Helper Text */
.form-helper {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-body-small);
  color: var(--color-text-secondary);
}

.form-helper--error {
  color: var(--color-error);
}

.form-helper--success {
  color: var(--color-success);
}

/* Input with Icon */
.form-input-wrapper {
  position: relative;
}

.form-input-icon {
  position: absolute;
  top: 50%;
  left: 16px;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.form-input--with-icon {
  padding-left: 48px;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-grey);
  border-radius: var(--card-radius);
  padding: var(--card-padding-mobile);
  box-shadow: var(--shadow-subtle);
  transition: box-shadow var(--transition-card);
}

@media (min-width: 768px) {
  .card {
    padding: var(--card-padding-desktop);
  }
}

/* Interactive Card */
.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  box-shadow: var(--shadow-elevated);
}

.card--interactive:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-default);
}

/* Card Variants */
.card--surface {
  background-color: var(--color-surface-grey);
}

.card--bordered {
  border: 2px solid var(--color-border-grey);
}

/* Card Header */
.card-header {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-grey);
}

.card-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: var(--font-size-body-small);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* Card Footer */
.card-footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-grey);
}

/* ============================================
   PROGRESS BARS
   ============================================ */

.progress {
  width: 100%;
  height: var(--progress-bar-height);
  background-color: var(--color-border-grey);
  border-radius: var(--progress-radius);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--color-secondary-teal);
  border-radius: var(--progress-radius);
  transition: width var(--transition-slow);
}

/* Progress Variants */
.progress-bar--success {
  background-color: var(--color-success);
}

.progress-bar--warning {
  background-color: var(--color-warning);
}

.progress-bar--error {
  background-color: var(--color-error);
}

/* Indeterminate Progress (Loading Animation) */
.progress-bar--indeterminate {
  width: 50%;
  animation: progress-indeterminate 1.5s ease-in-out infinite;
}

@keyframes progress-indeterminate {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}

/* Progress with Label */
.progress-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-body-small);
  color: var(--color-text-secondary);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  border-radius: var(--badge-radius);
  white-space: nowrap;
}

/* Badge Variants */
.badge--success {
  background-color: var(--color-success);
  color: var(--color-bg-white);
}

.badge--warning {
  background-color: var(--color-warning);
  color: var(--color-primary-navy);
}

.badge--error {
  background-color: var(--color-error);
  color: var(--color-bg-white);
}

.badge--info {
  background-color: var(--color-secondary-teal);
  color: var(--color-bg-white);
}

.badge--neutral {
  background-color: var(--color-surface-grey);
  color: var(--color-text-primary);
}

/* ============================================
   SKELETON LOADERS
   ============================================ */

.skeleton {
  background-color: var(--color-surface-grey);
  border-radius: var(--radius-sm);
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  background-image: linear-gradient(
    90deg,
    var(--color-surface-grey) 0%,
    var(--color-border-grey) 50%,
    var(--color-surface-grey) 100%
  );
  background-size: 200% 100%;
}

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

/* Skeleton Variants */
.skeleton-title {
  width: 100%;
  height: 28px;
  margin-bottom: var(--space-md);
}

.skeleton-text {
  width: 100%;
  height: 16px;
  margin-bottom: var(--space-sm);
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}

.skeleton-circle-large {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  margin: 0 auto 1rem;
}

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.skeleton-card {
  padding: var(--card-padding-mobile);
  border-radius: var(--card-radius);
}

@media (min-width: 768px) {
  .skeleton-card {
    padding: var(--card-padding-desktop);
  }
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  max-width: 480px;
  margin: 0 auto;
}

.empty-state-icon,
.empty-state img {
  width: 160px;
  height: 160px;
  margin-bottom: var(--space-lg);
  opacity: 0.8;
}

.empty-state-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.empty-state-description {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  max-width: var(--content-max-width);
}

/* ============================================
   NAVIGATION
   ============================================ */

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

.nav-link {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-primary);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  min-height: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
}

.nav-link:hover {
  color: var(--color-secondary-teal);
  background-color: var(--color-surface-grey);
}

.nav-link--active {
  color: var(--color-secondary-teal);
  font-weight: var(--font-weight-semibold);
}

/* Mobile Navigation (Hamburger) */
.nav-mobile {
  display: none;
}

@media (max-width: 767px) {
  .nav-desktop {
    display: none;
  }
  
  .nav-mobile {
    display: block;
  }
}

/* ============================================
   MODALS
   ============================================ */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: var(--space-lg);
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background-color: var(--color-bg-white);
  border-radius: var(--card-radius);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-elevated);
}

.modal-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border-grey);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.modal-close:hover {
  background-color: var(--color-surface-grey);
  color: var(--color-text-primary);
}

.modal-body {
  padding: var(--space-lg);
}

.modal-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border-grey);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

/* ============================================
   ALERTS / NOTIFICATIONS
   ============================================ */

.alert {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  display: flex;
  align-items: start;
  gap: var(--space-sm);
}

.alert-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.alert--success {
  background-color: rgba(34, 197, 94, 0.1);
  border-left-color: var(--color-success);
  color: var(--color-text-primary);
}

.alert--warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-left-color: var(--color-warning);
  color: var(--color-text-primary);
}

.alert--error {
  background-color: rgba(239, 68, 68, 0.1);
  border-left-color: var(--color-error);
  color: var(--color-text-primary);
}

.alert--info {
  background-color: rgba(42, 161, 152, 0.1);
  border-left-color: var(--color-secondary-teal);
  color: var(--color-text-primary);
}

/* ============================================
   ACCESSIBILITY OVERRIDES
   ============================================ */

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

/* Focus Visible (Keyboard Navigation) */
*:focus-visible {
  outline: 2px solid var(--color-secondary-teal);
  outline-offset: 2px;
}

/* Skip to Main Content Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-primary-navy);
  color: var(--color-bg-white);
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  z-index: var(--z-toast);
}

.skip-link:focus {
  top: 0;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .btn,
  .nav,
  .modal-overlay,
  .empty-state {
    display: none;
  }
  
  .card {
    border: 1px solid #000;
    box-shadow: none;
    page-break-inside: avoid;
  }
}



/* Footer Component - Design System Compliant */
.site-footer {
  background: var(--color-primary-navy);
  color: var(--color-text-muted);
  padding: var(--space-3xl) var(--space-lg) var(--space-lg);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.footer-brand {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.footer-trust {
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-heading {
  color: var(--color-white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: var(--space-2xl) 0;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-legal a:hover {
  color: var(--color-white);
}