/* ============================================
   PEREHVAT STORE - UNIFIED DESIGN SYSTEM
   Адаптивный дизайн + Темная/Светлая тема + Telegram Mini App
   ============================================ */

/* === 1. CSS ПЕРЕМЕННЫЕ (СВЕТЛАЯ ТЕМА) === */
:root {
    /* Цвета бренда */
    --brand-primary: #0042b0;
    --brand-primary-hover: #003080;
    --brand-secondary: #0042b0;
    --brand-accent: #0042b0;
    --brand-gradient: none;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Text */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-inverse: #ffffff;
    
    /* Borders */
    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;
    --border-focus: var(--brand-primary);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);
    
    /* Радиусы */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-heading: var(--font-body);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* === 2. ТЕМНАЯ ТЕМА === */
@media (prefers-color-scheme: dark) {
    :root:not(.light-theme) {
        --bg-primary: #111827;
        --bg-secondary: #0f0f12;
        --bg-tertiary: #1f2937;
        --bg-elevated: #1f2937;
        --bg-overlay: rgba(0, 0, 0, 0.7);
        
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-tertiary: #9ca3af;
        
        --border-primary: #374151;
        --border-secondary: #4b5563;
        
        --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.6);
        --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.7);
    }
}

/* Принудительная темная тема */
.dark-theme {
    --bg-primary: #111827;
    --bg-secondary: #0f0f12;
    --bg-tertiary: #1f2937;
    --bg-elevated: #1f2937;
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    
    --brand-primary: #60a5fa;
    --brand-primary-hover: #93c5fd;
    --brand-accent: #60a5fa;
    --brand-gradient: none;
    
    --border-primary: #374151;
    --border-secondary: #4b5563;
    
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.7);
}

/* Принудительная светлая тема */
.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;
    
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);
}

/* === 3. RESET === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    /* Telegram Mini App Safe Area */
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

img {
    image-orientation: from-image;
}

main {
    flex: 1;
}

/* Скроллбар */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--brand-primary);
}

/* === 4. TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--brand-primary-hover);
}

/* === 5. LAYOUT === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }

/* === 6. HEADER === */
.header {
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-primary);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo svg {
    flex-shrink: 0;
}

.logo span {
    color: var(--text-primary);
    gap: var(--spacing-sm);
    text-decoration: none;
}

/* Название и приветствие: тёмная тема — белый, светлая — графит (#374151) */
.logo .logo-text { color: #374151; font-size: 1.2rem; font-weight: 700; }
.page-title { color: #374151; }
.dark-theme .logo .logo-text { color: #fff; }
.dark-theme .page-title { color: #fff; }
.light-theme .logo .logo-text { color: #374151; }
.light-theme .page-title { color: #374151; }

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-primary);
}

/* Обесцвечивание эмодзи в шапке */
.nav-icons .nav-emoji {
    filter: grayscale(1);
    opacity: 0.9;
}
.nav-icons .nav-emoji:hover {
    filter: grayscale(0.6);
    opacity: 1;
}

/* Сердечко в тексте избранного: белое в тёмной теме */
.heart-in-text { color: #ef4444; }
.dark-theme .heart-in-text { color: #fff; }

/* === 7. BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-base);
    user-select: none;
}

.btn-primary {
    background: var(--brand-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-secondary);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--brand-primary);
    color: var(--brand-primary);
    padding: calc(0.75rem - 2px) calc(1.5rem - 2px);
}

.btn-outline:hover {
    background: var(--brand-primary);
    color: white;
    transform: translateY(-2px);
}

.btn-outline:active {
    transform: translateY(0);
}

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

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(54, 149, 246, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(54, 149, 246, 0);
    }
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* === 8. CARDS === */
.card {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--border-primary);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--brand-primary);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-primary);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
    background: var(--bg-secondary);
}

/* === 9. PRODUCT CARDS === */
.product-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-primary);
    height: 100%;
}

.product-card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--brand-primary);
}

.product-image {
    width: 100%;
    height: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    object-position: center;
    background: var(--bg-tertiary);
    display: block;
    image-orientation: from-image;
}

.product-body {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    gap: var(--spacing-xs);
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand-primary);
    margin-top: var(--spacing-sm);
}

.product-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-success);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

/* === 10. GRID === */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }

/* === 11. FORMS === */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(0, 66, 176, 0.12);
    transform: translateY(-1px);
}
.dark-theme .form-input:focus,
.dark-theme .form-select:focus,
.dark-theme .form-textarea:focus {
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* === 12. BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-primary {
    background: rgba(0, 66, 176, 0.12);
    color: var(--brand-primary);
}
.dark-theme .badge-primary {
    background: rgba(96, 165, 250, 0.2);
    color: var(--brand-primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

/* === 13. ALERTS === */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

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

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-info);
    color: var(--color-info);
}

/* === 14. MODAL === */
.modal {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(4px);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-elevated);
    border-radius: var(--radius-2xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-xl);
}

.modal.active .modal-content {
    transform: scale(1);
}

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

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

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

/* === 15. PAGE SPECIFIC === */
.page-header {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--brand-primary);
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* === 16. UTILITIES === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }

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

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

/* Spacing */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }

/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* === 17. ANIMATIONS === */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(54, 149, 246, 0.3);
    border-radius: 50%;
    border-top-color: var(--brand-primary);
    animation: spin 0.8s linear infinite;
}

.loading-lg {
    width: 50px;
    height: 50px;
    border-width: 4px;
}

/* === 17b. PROFILE PAGE (compact) === */
.profile-page { padding: var(--spacing-md) 0; }
.profile-header {
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}
.profile-header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
}
.profile-avatar-name {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 0;
}
.profile-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 1.5rem;
    flex-shrink: 0;
}
.profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
.profile-name {
    font-weight: 600;
    font-size: 1.125rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.profile-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
    align-items: center;
}
.profile-actions .btn-sm {
    white-space: nowrap;
}
.card-header-sm { padding: var(--spacing-sm) var(--spacing-md); }
.card-title-sm { font-size: 1rem; font-weight: 700; margin: 0; }
.card-body-sm { padding: var(--spacing-md) var(--spacing-lg); }
.purchase-list { display: flex; flex-direction: column; gap: 2px; }
.purchase-row {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: background 0.15s;
}
.purchase-row:hover { background: var(--bg-secondary); }
.purchase-model {
    min-width: 0;
    font-weight: 500;
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.purchase-price {
    font-weight: 700;
    color: var(--brand-primary);
    font-size: 0.9rem;
    white-space: nowrap;
}
.purchase-row .purchase-badge { font-size: 0.7rem; padding: 2px 6px; flex-shrink: 0; }
.purchase-row .btn { flex-shrink: 0; }
.profile-empty { text-align: center; padding: var(--spacing-lg); }
.profile-empty p { margin-bottom: var(--spacing-sm); }

/* === 18. RESPONSIVE === */
@media (max-width: 1024px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.35rem; }
    
    .page-title { font-size: 2rem; }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-sm) 0;
    }
    
    .header-content {
        gap: var(--spacing-md);
    }
    
    .logo {
        font-size: 1.25rem;
    }
    .logo .logo-text {
        font-size: 1rem;
    }
    
    .nav {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .page-header {
        padding: var(--spacing-lg) 0;
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    /* Mobile consent banner */
    #consent-banner {
        padding: var(--spacing-md);
    }
    
    #consent-banner .container > div {
        flex-direction: column;
        text-align: center;
    }
    
    #consent-banner .container > div > div:last-child {
        width: 100%;
    }
    
    #consent-banner button {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.125rem;
    }
    .logo .logo-text {
        font-size: 0.9rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .page-subtitle {
        font-size: 0.875rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .product-body {
        padding: var(--spacing-md);
    }
}

/* === 19. TELEGRAM MINI APP SPECIFIC === */
.tg-main-button {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-primary);
    display: none;
    z-index: var(--z-fixed);
}

.tg-viewport-stable {
    /* Для стабильного viewport в Telegram */
    height: 100vh;
    height: var(--tg-viewport-stable-height, 100vh);
}

/* === 20. PRINT === */
@media print {
    .header,
    .nav,
    .btn,
    .modal {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}