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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

h1 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h2 {
  font-family: var(--font-family-body);
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

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

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

/* === Utility Classes === */
.container {
  max-width: 414px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

/* === Theme Page Styles === */
.theme-page {
  padding: var(--space-lg) var(--space-md);
  max-width: 414px;
  margin: 0 auto;
}

.theme-header {
  text-align: center;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.theme-header h1 {
  margin-bottom: var(--space-sm);
}

.theme-header .subtitle {
  font-size: var(--font-size-label);
  color: var(--color-text-secondary);
}

.theme-nav {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.theme-nav a {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-label);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.theme-nav a.active,
.theme-nav a:hover {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-primary);
}

/* === Section === */
.section {
  margin-bottom: var(--space-2xl);
}

.section h2 {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

/* === Color Swatches === */
.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-md);
}

.color-swatch {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.color-swatch .swatch-color {
  height: 64px;
  width: 100%;
}

.color-swatch .swatch-info {
  padding: var(--space-sm);
  background: var(--color-bg-card);
}

.color-swatch .swatch-name {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.color-swatch .swatch-hex {
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
  font-family: monospace;
}

.color-swatch .swatch-token {
  font-size: 11px;
  color: var(--color-text-secondary);
  font-family: monospace;
  opacity: 0.7;
}

/* === Typography Specimen === */
.type-specimen {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.type-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.type-label {
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
  font-family: monospace;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* === Component Gallery === */
.component-group {
  margin-bottom: var(--space-xl);
}

.component-group h3 {
  font-size: var(--font-size-card-title);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.component-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin-bottom: var(--space-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-lg);
  height: var(--button-height-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family-body);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  min-width: var(--touch-target-min);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-destructive {
  background-color: var(--color-error);
  color: #FFFFFF;
}

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

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

.btn-lg {
  height: var(--button-height-lg);
  font-size: var(--font-size-body);
  width: 100%;
}

.btn-sm {
  height: var(--button-height-sm);
  font-size: var(--font-size-label);
  padding: 0 var(--space-md);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: var(--badge-height);
  padding: 0 var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.badge-quality-1 {
  background-color: var(--color-quality-1);
  color: #FFFFFF;
}

.badge-quality-2 {
  background-color: var(--color-quality-2);
  color: #FFFFFF;
}

.badge-quality-3 {
  background-color: var(--color-quality-3);
  color: #FFFFFF;
}

.badge-urgent {
  background-color: var(--color-error);
  color: #FFFFFF;
}

.badge-status-active {
  background-color: var(--color-success);
  color: #FFFFFF;
}

.badge-status-expired {
  background-color: var(--color-warning);
  color: #FFFFFF;
}

.badge-status-cancelled {
  background-color: var(--color-text-secondary);
  color: #FFFFFF;
}

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 36px;
  padding: 0 var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-label);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.chip.selected {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-primary);
}

.chip:hover:not(.selected) {
  border-color: var(--color-primary);
}

/* Inputs */
.input {
  width: 100%;
  height: var(--input-height);
  padding: 0 var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-body);
  font-family: var(--font-family-body);
  color: var(--color-text-primary);
  background: var(--color-bg-card);
  transition: var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

.input::placeholder {
  color: var(--color-text-secondary);
}

.input-error {
  border-color: var(--color-error);
}

/* Toggle */
.toggle {
  position: relative;
  width: 48px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-border);
  cursor: pointer;
  transition: var(--transition-fast);
}

.toggle.on {
  background-color: var(--color-primary);
}

.toggle .toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: white;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle.on .toggle-thumb {
  left: 22px;
}

/* Radio */
.radio {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: var(--touch-target-min);
  padding: var(--space-sm) 0;
  cursor: pointer;
}

.radio-circle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.radio.selected .radio-circle {
  border-color: var(--color-primary);
}

.radio.selected .radio-circle::after {
  content: '';
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

/* Slider */
.slider-container {
  width: 100%;
}

.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  outline: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.slider-value {
  text-align: right;
  font-size: var(--font-size-label);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-top: var(--space-xs);
}

/* Toast */
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: #FFFFFF;
  box-shadow: var(--shadow-lg);
}

.toast-success {
  background-color: var(--color-success);
}

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

/* === Cards === */
.offer-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.offer-card .card-photo {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--color-bg-subtle);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-caption);
}

.offer-card .card-photo .badge-overlay {
  position: absolute;
  bottom: var(--space-sm);
  left: var(--space-sm);
  display: flex;
  gap: var(--space-xs);
}

.offer-card .card-photo .badge-overlay-right {
  position: absolute;
  bottom: var(--space-sm);
  right: var(--space-sm);
}

.offer-card .card-body {
  padding: var(--space-md);
}

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

.offer-card .card-price {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.offer-card .card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
  flex-wrap: wrap;
}

.offer-card .card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

/* Request Card */
.request-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md);
}

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

.request-card .card-badges {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.request-card .card-price {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.request-card .card-meta {
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
}

/* === Wireframe Mockups === */
.wireframe {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.wireframe-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-label);
  font-weight: var(--font-weight-semibold);
}

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

/* === Landing Wireframe === */
.landing-wireframe .hero {
  text-align: center;
  padding: var(--space-xl) 0;
}

.landing-wireframe .hero .illustration {
  width: 100%;
  height: 200px;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 48px;
}

.landing-wireframe .hero h1 {
  margin-bottom: var(--space-sm);
}

.landing-wireframe .hero p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.landing-wireframe .trust-badges {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-sm);
  text-align: center;
  margin: var(--space-lg) 0;
}

.landing-wireframe .trust-badge {
  padding: var(--space-sm);
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
}

.landing-wireframe .trust-badge .icon {
  font-size: 24px;
  margin-bottom: var(--space-xs);
}

.landing-wireframe .trust-footer {
  text-align: center;
  padding: var(--space-md) 0;
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
}

/* === Feed Wireframe === */
.feed-wireframe .feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
}

.feed-wireframe .feed-header .location {
  font-size: var(--font-size-label);
  color: var(--color-text-secondary);
}

/* === Tab Bar (REQ-00-122) === */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-md);
  background: var(--color-bg-card);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.tab {
  flex: 1;
  text-align: center;
  padding: var(--space-md) 0;
  min-height: var(--touch-target-min);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.tab:active {
  background: var(--color-bg-subtle);
}

.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.feed-wireframe .cards-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* === Bottom Nav === */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 414px;
  height: var(--nav-height);
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: var(--z-fixed);
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 11px;
  color: var(--color-text-secondary);
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  justify-content: center;
  cursor: pointer;
}

.bottom-nav .nav-item.active {
  color: var(--color-primary);
}

.bottom-nav .nav-item .nav-icon {
  font-size: 22px;
}

/* === FAB === */
.fab {
  position: fixed;
  bottom: calc(var(--nav-height) + var(--space-md));
  right: calc(50% - 207px + var(--space-md));
  width: var(--fab-size);
  height: var(--fab-size);
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-fixed);
  transition: var(--transition-fast);
}

.fab:hover {
  background-color: var(--color-primary-dark);
}