/**
 * WARDROBE APP - Design System v2.0
 * Professional iOS-style design system
 * Created: 2026-01-04
 */

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */

:root {
  /* Primary palette - unified red accent */
  --color-bg-primary: #000000;
  --color-bg-secondary: #0a0a0a;
  --color-bg-elevated: #141414;
  --color-bg-card: #1c1c1e;
  --color-bg-card-hover: #252528;

  /* Text colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-tertiary: rgba(255, 255, 255, 0.5);
  --color-text-quaternary: rgba(255, 255, 255, 0.3);

  /* Accent colors - unified red theme */
  --color-accent: #ff453a;
  --color-accent-light: #ff6961;
  --color-accent-dark: #d63031;
  --color-accent-gradient: linear-gradient(135deg, #ff453a 0%, #ff6b6b 100%);
  --color-accent-glow: rgba(255, 69, 58, 0.4);

  /* Semantic colors */
  --color-success: #30d158;
  --color-success-bg: rgba(48, 209, 88, 0.15);
  --color-warning: #ffd60a;
  --color-warning-bg: rgba(255, 214, 10, 0.15);
  --color-error: #ff453a;
  --color-error-bg: rgba(255, 69, 58, 0.15);
  --color-info: #0a84ff;
  --color-info-bg: rgba(10, 132, 255, 0.15);

  /* Surface colors */
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-strong: rgba(255, 255, 255, 0.2);
  --color-divider: rgba(255, 255, 255, 0.08);
  --color-overlay: rgba(0, 0, 0, 0.85);
  --color-glass: rgba(28, 28, 30, 0.8);

  /* Typography */
  --font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;

  /* Font sizes - iOS scale */
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-md: 17px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 28px;
  --font-size-3xl: 34px;

  /* Font weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Border Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index layers */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-toast: 600;

  /* Safe areas */
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

/* ==========================================================================
   2. CSS RESET & BASE
   ========================================================================== */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: 1.4;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Smooth scrolling (respect reduced motion) */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-tertiary);
}

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

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

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}

.hide-scrollbar {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* ==========================================================================
   3. LAYOUT
   ========================================================================== */

.app {
  min-height: 100vh;
  padding-bottom: calc(80px + var(--safe-area-bottom));
}

.screen {
  display: none;
  padding: var(--space-4);
  animation: fadeSlideIn var(--transition-normal) ease-out;
}

.screen.active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   4. HEADER
   ========================================================================== */

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0 var(--space-4);
}

.header h1 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.02em;
}

.header .count {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.header .count b {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

/* ==========================================================================
   5. BOTTOM NAVIGATION
   ========================================================================== */

.nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: var(--space-2) 0;
  padding-bottom: max(var(--space-2), var(--safe-area-bottom));
  background: var(--color-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
  z-index: var(--z-fixed);
}

.nav button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-6);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  position: relative;
}

.nav button svg {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
}

.nav button.on {
  color: var(--color-accent);
}

.nav button.on svg {
  transform: scale(1.1);
}

.nav button::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.nav button.on::after {
  transform: translateX(-50%) scaleX(1);
}

/* ==========================================================================
   6. FILTER CHIPS
   ========================================================================== */

.filters {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-3);
  margin: 0 calc(-1 * var(--space-4));
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.filter {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.filter:hover {
  background: var(--color-bg-card-hover);
}

.filter.on {
  background: var(--color-text-primary);
  border-color: var(--color-text-primary);
  color: var(--color-bg-primary);
}

/* ==========================================================================
   7. WARDROBE GRID
   ========================================================================== */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
}

@media (min-width: 480px) {
  .grid { gap: var(--space-3); }
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
  }
}

.item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.item:hover,
.item:focus-within {
  border-color: var(--color-border-strong);
  transform: scale(1.02);
}

.item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-fast);
}

.item .cat {
  position: absolute;
  bottom: var(--space-1);
  left: var(--space-1);
  padding: 2px var(--space-2);
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.item .del {
  position: absolute;
  top: var(--space-1);
  right: var(--space-1);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition-fast);
}

.item:hover .del,
.item:focus-within .del,
.item .del:focus {
  opacity: 1;
  transform: scale(1);
}

.item .del:hover {
  background: var(--color-error);
}

/* ==========================================================================
   8. SKELETON LOADING
   ========================================================================== */

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

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

.skeleton-item {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
}

.skeleton-text:last-child {
  width: 60%;
}

/* ==========================================================================
   9. LOADING STATES
   ========================================================================== */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-10);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 4px;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--space-3) 0;
}

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

.progress-indeterminate .progress-bar {
  width: 30%;
  animation: progressIndeterminate 1.5s ease-in-out infinite;
}

@keyframes progressIndeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ==========================================================================
   10. EMPTY STATE
   ========================================================================== */

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
  color: var(--color-text-tertiary);
}

.empty svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty p {
  font-size: var(--font-size-sm);
  max-width: 280px;
  line-height: 1.6;
}

/* ==========================================================================
   11. FAB (Floating Action Button)
   ========================================================================== */

.fab {
  position: fixed;
  bottom: calc(96px + var(--safe-area-bottom));
  right: var(--space-4);
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: var(--font-size-2xl);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  z-index: var(--z-fixed);
  transition: all var(--transition-fast);
}

.fab:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl), 0 0 40px var(--color-accent-glow);
}

.fab:active {
  transform: scale(0.95);
}

/* ==========================================================================
   12. WEATHER WIDGET
   ========================================================================== */

.weather {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-5);
}

.weather .icon {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.weather .icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.weather .temp {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
}

.weather .desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.weather .rec {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-1);
}

/* ==========================================================================
   13. OUTFIT CARDS
   ========================================================================== */

.section-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

.looks {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  padding-bottom: var(--space-3);
  margin: 0 calc(-1 * var(--space-4));
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.look {
  flex: 0 0 200px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  scroll-snap-align: start;
  transition: all var(--transition-fast);
}

.look:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.look-imgs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  aspect-ratio: 1;
  background: var(--color-bg-elevated);
}

.look-imgs div {
  background: var(--color-bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
}

.look-imgs img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.look-info {
  padding: var(--space-3);
}

.look-info h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.look-info p {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  line-height: 1.5;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.look-btn {
  width: 100%;
  padding: var(--space-3);
  background: var(--color-accent-gradient);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
}

.look-btn:hover {
  filter: brightness(1.1);
}

/* ==========================================================================
   14. PROMPT BOX
   ========================================================================== */

.prompt-box {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-4);
  margin-top: var(--space-5);
}

.prompt-box label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-3);
}

.prompt-row {
  display: flex;
  gap: var(--space-3);
}

.prompt-input {
  flex: 1;
  padding: var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.prompt-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.prompt-send {
  width: 50px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
}

.prompt-send:hover:not(:disabled) {
  transform: scale(1.05);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.tag {
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--color-bg-card-hover);
  color: var(--color-text-primary);
}

.tag:active {
  background: var(--color-accent);
  color: var(--color-text-primary);
}

/* ==========================================================================
   15. PROFILE
   ========================================================================== */

.profile-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-6) 0;
}

.avatar {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-full);
  background: var(--color-bg-card);
  border: 3px solid var(--color-accent);
  overflow: hidden;
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-glow);
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar svg {
  width: 40px;
  height: 40px;
  color: var(--color-text-tertiary);
  margin: var(--space-6);
}

.profile-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.profile-user {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.stat {
  padding: var(--space-4);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: transform var(--transition-fast);
}

.stat:hover {
  transform: translateY(-2px);
}

.stat b {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.stat span {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* Balance Card */
.balance {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--color-accent-gradient);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow);
}

.balance h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  opacity: 0.8;
  margin-bottom: var(--space-1);
}

.balance b {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

.balance small {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  margin-left: var(--space-1);
}

.btn-buy {
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
}

.btn-buy:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   16. MODAL
   ========================================================================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: flex-end;
}

.modal.open {
  display: flex;
}

.modal-bg {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-box {
  position: relative;
  width: 100%;
  max-height: 90vh;
  background: var(--color-bg-card);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  overflow: auto;
  animation: slideUp var(--transition-slow);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-bar {
  width: 36px;
  height: 4px;
  background: var(--color-text-quaternary);
  border-radius: var(--radius-full);
  margin: var(--space-3) auto;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--space-4) var(--space-4);
}

.modal-head h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-bg-card-hover);
  color: var(--color-text-primary);
  transform: rotate(90deg);
}

.modal-body {
  padding: 0 var(--space-4) var(--space-8);
}

/* ==========================================================================
   17. UPLOAD AREA
   ========================================================================== */

.add-area {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.preview {
  width: 180px;
  height: 180px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  border: 2px dashed var(--color-border-strong);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  cursor: pointer;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.preview:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-card);
}

.preview.has {
  border-style: solid;
  border-color: var(--color-accent);
}

.preview svg {
  width: 40px;
  height: 40px;
  color: var(--color-text-tertiary);
}

.preview span {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview .saving {
  color: var(--color-accent);
  font-size: var(--font-size-xs);
}

/* Category Buttons */
.cats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.cat-btn {
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.cat-btn:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

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

/* ==========================================================================
   18. BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  width: 100%;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Primary button with gradient */
.btn {
  background: var(--color-accent-gradient);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-glow);
}

.btn:hover:not(:disabled) {
  box-shadow: 0 0 30px var(--color-accent-glow);
}

.btn.secondary {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  box-shadow: none;
}

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

/* ==========================================================================
   19. TOAST
   ========================================================================== */

.toast {
  position: fixed;
  bottom: calc(100px + var(--safe-area-bottom));
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-3) var(--space-6);
  background: var(--color-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  z-index: var(--z-toast);
  animation: toastIn var(--transition-bounce);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
}

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

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

/* ==========================================================================
   20. STARS/PAYMENT
   ========================================================================== */

.stars-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.stars-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.stars-item:hover {
  border-color: var(--color-border-strong);
}

.stars-item.on {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.stars-item.best::after {
  content: 'Выгодно';
  position: absolute;
  top: -10px;
  right: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--color-success);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-bg-primary);
}

.stars-item .info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.stars-item .emoji {
  font-size: var(--font-size-xl);
}

.stars-item .amt {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.stars-item .amt small {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-regular);
  margin-left: var(--space-1);
}

.stars-item .price {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
}

/* ==========================================================================
   21. TRY-ON MODAL STATES
   ========================================================================== */

#tryonStep1 p,
#tryonStep2 p,
#tryonStep3 p {
  text-align: center;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

#tryonStep2 > div,
#tryonStep3 > div:first-child {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  overflow: hidden;
}

#tryonImg {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ==========================================================================
   22. UTILITIES
   ========================================================================== */

.hidden {
  display: none !important;
}

.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;
}

/* ==========================================================================
   23. ANIMATIONS
   ========================================================================== */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-bounce { animation: bounce 1s ease-in-out infinite; }

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

/* ==========================================================================
   24. RESPONSIVE
   ========================================================================== */

@media (max-width: 359px) {
  :root {
    --font-size-xl: 22px;
    --font-size-2xl: 26px;
  }

  .grid {
    gap: var(--space-1);
  }

  .look {
    flex: 0 0 180px;
  }
}

@media (min-width: 768px) {
  .stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .modal-box {
    max-width: 500px;
    margin: auto;
    border-radius: var(--radius-2xl);
  }
}

/* ==========================================================================
   25. PRINT
   ========================================================================== */

@media print {
  .nav,
  .fab,
  .modal,
  .toast {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }
}