/* ===================================
   CSS Reset & Base Styles
   =================================== */

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

:root {
    /* Color Palette */
    --primary: #D28A6C;
    --primary-hover: #C07E62;
    --primary-light: #F7EEE5;
    --primary-dark: #A57E63;
    --secondary: #7D9A86;
    --secondary-hover: #6F8876;
    --accent: #C49B7E;
    --accent-light: #F3E6DC;
    --success: #7D9A86;
    --success-light: #DDE8E1;
    --error: #C2554A;
    --error-light: #F3D7D3;
    --warning: #B98B57;
    --text-primary: #1A1A1A;
    --text-secondary: #6B6560;
    --text-muted: #9B8F86;
    --border: #E5E0DA;
    --border-light: #F3EFEA;
    --background: #F8F7F4;
    --white: #FFFFFF;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Borders */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Transitions */
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--background);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* ===================================
   Hero Section with Gradient
   =================================== */

.hero-section {
    background: linear-gradient(135deg, #F7EEE5 0%, #E6CDBB 100%);
    padding: 80px 20px 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.35)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    line-height: 1.1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 400;
    line-height: 1.5;
}

/* ===================================
   Search Form
   =================================== */

.search-form {
    margin-top: 40px;
}

.search-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-2xl);
    max-width: 700px;
    margin: 0 auto;
    transition: var(--transition);
}

.search-container:focus-within {
    box-shadow: 0 20px 60px -12px rgba(210, 138, 108, 0.25);
    transform: translateY(-2px);
}

.search-icon {
    color: var(--text-muted);
    margin-left: 12px;
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 12px;
    font-size: 16px;
    color: var(--text-primary);
    background: transparent;
    font-family: inherit;
}

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

.search-btn {
    padding: 14px 28px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: inherit;
}

.search-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.search-options {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.search-hint {
    margin-top: 4px;
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 400;
}

/* ===================================
   Main Content Area
   =================================== */

.main-content {
    max-width: 1200px;
    margin: -60px auto 60px;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

/* ===================================
   Empty State
   =================================== */

.empty-state {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 80px 40px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.empty-icon {
    color: var(--primary);
    opacity: 0.6;
    margin-bottom: 24px;
}

.empty-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.empty-description {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.example-searches {
    margin-top: 40px;
}

.examples-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 500;
}

.example-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.example-tag {
    padding: 10px 20px;
    background: var(--primary-light);
    color: var(--primary);
    border: none;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.example-tag:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Loading State
   =================================== */

.loading-state {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 80px 40px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.loading-spinner {
    margin-bottom: 24px;
}

.spinner-icon {
    color: var(--primary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.loading-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.loading-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.loading-sources {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    max-width: 500px;
    margin: 0 auto;
}

.source-badge {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.source-badge.loading {
    background: var(--border-light);
    color: var(--text-muted);
    animation: pulse 1.5s ease-in-out infinite;
}

.source-badge.complete {
    background: var(--success-light);
    color: var(--success);
}

.source-badge.complete::before {
    content: '✓';
    font-weight: 700;
}

.source-badge.error {
    background: var(--error-light);
    color: var(--error);
}

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

/* ===================================
   Error State
   =================================== */

.error-state {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 80px 40px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.error-icon {
    color: var(--error);
    opacity: 0.6;
    margin-bottom: 24px;
}

.error-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.error-description {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

/* ===================================
   Results Section
   =================================== */

.results-section {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-header {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
}

.results-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.results-meta {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.results-count {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
}

.results-location {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ===================================
   Shopping Journey
   =================================== */

.shopping-journey {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border: 2px solid var(--primary-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-md);
}

.journey-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.journey-header svg {
    color: var(--primary);
    flex-shrink: 0;
}

.journey-header h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.journey-intro {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-weight: 500;
}

.journey-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.journey-step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--white);
    border-radius: var(--radius);
    border-left: 4px solid var(--border);
    transition: var(--transition);
}

.journey-step.success {
    border-left-color: var(--success);
    background: var(--success-light);
}

.journey-step.no-results {
    border-left-color: var(--text-muted);
    background: var(--background);
    opacity: 0.7;
}

.journey-step.error {
    border-left-color: var(--error);
    background: var(--error-light);
    opacity: 0.6;
}

.step-icon {
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.journey-step.success .step-icon {
    color: var(--success);
}

.journey-step.no-results .step-icon {
    color: var(--text-muted);
}

.journey-step.error .step-icon {
    color: var(--error);
}

.step-text {
    font-size: 14px;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.5;
}

.step-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.journey-conclusion {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
    border-radius: var(--radius);
    border: 2px solid var(--primary);
}

.journey-conclusion svg {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.journey-conclusion p {
    font-size: 15px;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.6;
    font-weight: 500;
}

.journey-conclusion strong {
    color: var(--primary);
    font-weight: 700;
}

/* ===================================
   Top Deal Section
   =================================== */

.top-deal-section {
    margin-bottom: 40px;
    position: relative;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--accent), #F97316);
    color: var(--white);
    border-radius: 20px 20px 0 0;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 32px;
    box-shadow: var(--shadow-md);
}

.top-deal {
    border: 3px solid var(--accent);
    position: relative;
    overflow: hidden;
}

.top-deal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), #F97316);
}

/* ===================================
   Deal Cards
   =================================== */

.deal-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-slow);
    overflow: hidden;
    border: 1px solid var(--border);
}

.deal-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.deal-content {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
    padding: 24px;
}

.deal-image-wrapper {
    background: var(--background);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
}

.deal-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.deal-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.deal-product-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.deal-seller {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.seller-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
}

.rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
}

.rating svg {
    color: var(--accent);
}

.rating-value {
    font-weight: 600;
    color: var(--text-primary);
}

.rating-count {
    color: var(--text-muted);
}

.deal-pricing {
    margin-bottom: 16px;
}

.price-wrapper {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 8px;
}

.price {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.savings {
    padding: 4px 12px;
    background: var(--success-light);
    color: var(--success);
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
}

.shipping-info {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-secondary);
}

.shipping-info svg {
    color: var(--secondary);
}

.original-price {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-top: 4px;
}

.stock-warning {
    font-size: 13px;
    color: var(--warning);
    font-weight: 600;
    margin-top: 8px;
}

.deal-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-top: 12px;
    margin-bottom: 12px;
}

.sale-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--error);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
}

.deal-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    font-family: inherit;
    align-self: flex-start;
}

.deal-btn:hover {
    background: var(--primary-hover);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.deal-btn svg {
    width: 16px;
    height: 16px;
}

/* ===================================
   Alternatives Section
   =================================== */

.alternatives-section {
    margin-top: 40px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-left: 4px;
}

.deals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* ===================================
   Buttons
   =================================== */

.btn {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

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

.btn-primary:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* ===================================
   Footer
   =================================== */

.footer {
    text-align: center;
    padding: 40px 20px;
    background: var(--white);
    border-top: 1px solid var(--border);
    margin-top: 60px;
}

.footer-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ===================================
   Utility Classes
   =================================== */

.hidden {
    display: none !important;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablets */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 20px 100px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .search-container {
        flex-direction: column;
        padding: 12px;
    }

    .search-input {
        width: 100%;
        text-align: center;
    }

    .search-btn {
        width: 100%;
        padding: 14px 24px;
    }

    .deal-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .deal-image-wrapper {
        max-width: 280px;
        margin: 0 auto;
    }

    .deals-grid {
        grid-template-columns: 1fr;
    }

    .empty-state,
    .loading-state,
    .error-state {
        padding: 60px 24px;
    }

    .results-header {
        padding: 24px;
    }

    .results-title {
        font-size: 24px;
    }

    .price {
        font-size: 28px;
    }

    .shopping-journey {
        padding: 24px 20px;
    }

    .journey-header h3 {
        font-size: 18px;
    }

    .journey-step {
        padding: 12px 14px;
    }

    .journey-conclusion {
        padding: 16px;
        flex-direction: column;
        gap: 8px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .search-input {
        font-size: 16px;
    }

    .search-input::placeholder {
        font-size: 14px;
    }

    .empty-title,
    .error-title {
        font-size: 24px;
    }

    .deal-product-name {
        font-size: 18px;
    }

    .price {
        font-size: 24px;
    }

    .deal-btn {
        width: 100%;
    }

    .example-tags {
        flex-direction: column;
    }

    .example-tag {
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
}

/* ===================================
   Accessibility & Focus States
   =================================== */

*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

button:focus-visible,
.btn:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* ===================================
   Reduced Motion Support
   =================================== */

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

/* ===================================
   Print Styles
   =================================== */

@media print {
    .hero-section,
    .footer,
    .search-form,
    .empty-state,
    .loading-state,
    .error-state {
        display: none;
    }

    .deal-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border);
    }

    .deal-btn {
        display: none;
    }
}