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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    min-height: 100dvh;
    color: var(--gray-900);
    line-height: 1.6;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tagline {
    font-size: 1.1rem;
    opacity: 0.9;
}

.search-section {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.country-selector {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.country-selector label {
    font-size: 0.95rem;
    color: var(--gray-700);
    white-space: nowrap;
}

.country-selector select {
    flex: 1;
    padding: 0.6rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    background: white;
    color: var(--gray-700);
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}

.country-selector select:focus {
    border-color: var(--primary);
}

#product-title {
    flex: 1;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 10px;
    outline: none;
    transition: border-color 0.2s;
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
}

#product-title:focus {
    border-color: var(--primary);
}

#product-title::placeholder {
    color: var(--gray-500);
}

.input-hint {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
    font-style: italic;
}

.price-input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.price-input-group label {
    font-size: 0.95rem;
    color: var(--gray-700);
    white-space: nowrap;
}

.price-input-group input {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s;
}

.price-input-group input:focus {
    border-color: var(--primary);
}


.btn-secondary {
    padding: 0.75rem 1rem;
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    background: var(--primary);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s;
}

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

.btn-primary:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

.loading {
    text-align: center;
    padding: 3rem;
    background: white;
    border-radius: 16px;
    margin-bottom: 2rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading p {
    color: var(--gray-500);
}

.error-message {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border: 2px solid #fc8181;
    color: #c53030;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(245, 101, 101, 0.15);
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

.hidden {
    display: none !important;
}

.results {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}

.product-header {
    text-align: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 1.5rem;
}

#product-name {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.product-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.card {
    background: var(--gray-50);
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
}

.card.full-width {
    grid-column: 1 / -1;
}

.card h3 {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: 0.75rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.card-header h3 {
    margin-bottom: 0;
}

.badge {
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge.good-deal, .badge.buy {
    background: #dcfce7;
    color: #166534;
}

.badge.overpriced, .badge.skip {
    background: #fef2f2;
    color: #991b1b;
}

.badge.wait-for-sale, .badge.wait {
    background: #fef3c7;
    color: #92400e;
}

.verdict-card, .recommendation-card {
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
}

.pros-list li, .cons-list li, .alternatives-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    border-bottom: 1px solid var(--gray-200);
    list-style: none;
}

.pros-list li:last-child, .cons-list li:last-child, .alternatives-list li:last-child {
    border-bottom: none;
}

.pros-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.cons-list li::before {
    content: "✕";
    position: absolute;
    left: 0;
    color: var(--danger);
    font-weight: bold;
}

.alternatives-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.comparisons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
}

.comparison-item {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--gray-200);
}

.comparison-item .title {
    font-size: 0.9rem;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.comparison-item .price {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.comparison-item .source {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.comparison-item .source-link {
    font-size: 0.8rem;
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

.comparison-item .source-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.alternative-info {
    margin-bottom: 0.25rem;
}

.alternative-price {
    font-weight: 600;
    color: var(--success);
}

.alternative-store {
    color: var(--gray-700);
}

.alternative-link {
    display: block;
    font-size: 0.8rem;
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
    transition: color 0.2s;
}

.alternative-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

footer {
    text-align: center;
    margin-top: 2rem;
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
}

.price-subsections {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.price-subsection h4 {
    font-size: 0.95rem;
    color: var(--gray-700);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--gray-200);
}

.price-subsection .alternatives-list {
    margin: 0;
    padding: 0;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem 0.75rem;
    }
    
    header {
        margin-bottom: 1.5rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .search-section {
        padding: 1.25rem;
        border-radius: 12px;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    #product-title {
        min-height: 100px;
        font-size: 16px;
    }
    
    .btn-secondary {
        width: 100%;
        padding: 0.875rem;
        justify-content: center;
        gap: 0.5rem;
    }
    
    .btn-secondary::after {
        content: "Paste";
        font-size: 0.95rem;
    }
    
    .price-input-group {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .price-input-group label {
        font-size: 0.9rem;
    }
    
    .price-input-group input {
        padding: 0.875rem 1rem;
        font-size: 16px;
    }
    
    .country-selector {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .country-selector select {
        padding: 0.875rem 1rem;
        font-size: 16px;
    }
    
    .btn-primary {
        padding: 1rem;
        font-size: 1rem;
        border-radius: 8px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .card.full-width {
        grid-column: 1;
    }
    
    .card {
        padding: 1rem;
    }
    
    .results {
        padding: 1rem;
        border-radius: 12px;
    }
    
    #product-name {
        font-size: 1.2rem;
        word-break: break-word;
    }
    
    .product-price {
        font-size: 1.5rem;
    }
    
    .product-header {
        padding-bottom: 1rem;
        margin-bottom: 1rem;
    }
    
    .comparisons-grid {
        grid-template-columns: 1fr;
    }
    
    .price-subsections {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .badge {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    .card-header {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .loading {
        padding: 2rem 1rem;
        border-radius: 12px;
    }
    
    .spinner {
        width: 40px;
        height: 40px;
    }
    
    footer {
        margin-top: 1.5rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0.75rem 0.5rem;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    .tagline {
        font-size: 0.9rem;
    }
    
    .search-section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    #product-title {
        padding: 0.875rem 1rem;
    }
    
    .input-hint {
        font-size: 0.8rem;
    }
    
    .card h3 {
        font-size: 0.95rem;
    }
    
    .pros-list li, .cons-list li, .alternatives-list li {
        font-size: 0.9rem;
        padding: 0.4rem 0;
        padding-left: 1.25rem;
    }
    
    .comparison-item {
        padding: 0.75rem;
    }
    
    .comparison-item .title {
        font-size: 0.85rem;
    }
    
    .comparison-item .price {
        font-size: 0.95rem;
    }
    
    .price-subsection h4 {
        font-size: 0.9rem;
    }
    
    .alternative-link {
        font-size: 0.75rem;
    }
    
    .error-message {
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
    }
}

@media (hover: none) and (pointer: coarse) {
    .btn-primary:hover {
        background: var(--primary);
    }
    
    .btn-secondary:hover {
        background: var(--gray-100);
    }
    
    .btn-primary:active {
        background: var(--primary-dark);
        transform: scale(0.98);
    }
    
    .btn-secondary:active {
        background: var(--gray-200);
        transform: scale(0.98);
    }
}