/* ===== CSS Variables ===== */
:root {
    --primary: #e85d04;
    --primary-dark: #d45203;
    --primary-light: #f48c42;
    --secondary: #1a1a2e;
    --secondary-light: #16213e;
    --accent: #0f3460;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

ul {
    list-style: none;
}

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

/* ===== Header & Navigation ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
}

.logo-icon {
    font-size: 2rem;
}

.logo-domain {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--secondary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--secondary);
    border: 2px solid var(--gray-200);
}

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

.btn-amazon {
    background: #ff9900;
    color: var(--gray-900);
}

.btn-amazon:hover {
    background: #e68a00;
    transform: translateY(-2px);
}

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

/* ===== Hero Section ===== */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--primary);
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Rice Cooker Illustration */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.rice-cooker-illustration {
    position: relative;
}

.cooker-body {
    width: 280px;
    height: 260px;
    background: linear-gradient(145deg, #f5f5f5, #e0e0e0);
    border-radius: 30px 30px 50px 50px;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.cooker-lid {
    width: 260px;
    height: 80px;
    background: linear-gradient(145deg, #fafafa, #e8e8e8);
    border-radius: 130px 130px 20px 20px;
    position: absolute;
    top: -40px;
    left: 10px;
    box-shadow: var(--shadow);
}

.steam {
    position: absolute;
    width: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: steam 2s ease-in-out infinite;
}

.steam-1 {
    height: 30px;
    top: -40px;
    left: 80px;
    animation-delay: 0s;
}

.steam-2 {
    height: 40px;
    top: -50px;
    left: 130px;
    animation-delay: 0.3s;
}

.steam-3 {
    height: 25px;
    top: -35px;
    left: 180px;
    animation-delay: 0.6s;
}

@keyframes steam {
    0%, 100% {
        opacity: 0;
        transform: translateY(0) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translateY(-20px) scale(1.2);
    }
}

.cooker-display {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 40px;
    background: #1a1a1a;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4ade80;
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.cooker-buttons {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
}

.btn-cooker {
    width: 40px;
    height: 40px;
    background: linear-gradient(145deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    box-shadow: var(--shadow);
}

/* ===== Features Section ===== */
.features {
    padding: 4rem 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Products Section ===== */
.products {
    padding: 5rem 0;
    background: var(--gray-50);
}

.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
}

.filter-select {
    padding: 0.625rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--gray-700);
    background: var(--white);
    cursor: pointer;
    min-width: 160px;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    height: 220px;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image-placeholder {
    font-size: 6rem;
    opacity: 0.8;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.375rem 0.75rem;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.product-badge.bestseller {
    background: var(--success);
}

.product-badge.premium {
    background: var(--secondary);
}

.product-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-brand {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.spec-tag {
    padding: 0.25rem 0.625rem;
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stars {
    color: #fbbf24;
    font-size: 1rem;
}

.rating-count {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.product-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.product-price .currency {
    font-size: 1rem;
    vertical-align: super;
}

.product-actions {
    margin-top: auto;
    display: flex;
    gap: 0.75rem;
}

.product-actions .btn {
    flex: 1;
    padding: 0.75rem;
}

.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--gray-500);
}

/* ===== Compare Section ===== */
.compare-section {
    padding: 5rem 0;
    background: var(--white);
}

.compare-slots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.compare-slot {
    background: var(--gray-50);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.compare-slot:hover {
    border-color: var(--primary);
}

.compare-slot.active {
    border-style: solid;
    border-color: var(--primary);
    background: var(--white);
}

.slot-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-400);
}

.slot-icon {
    font-size: 2rem;
    font-weight: 300;
}

.compare-select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.9rem;
    margin-top: 1rem;
    cursor: pointer;
}

.compare-table-wrapper {
    overflow-x: auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
}

.compare-table th,
.compare-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.compare-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--secondary);
}

.compare-table th:first-child {
    width: 180px;
    color: var(--gray-600);
}

.compare-table tbody tr:hover {
    background: var(--gray-50);
}

.compare-table .check {
    color: var(--success);
}

.compare-table .cross {
    color: var(--gray-400);
}

/* ===== Buying Guide Section ===== */
.buying-guide {
    padding: 5rem 0;
    background: var(--gray-50);
}

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

.guide-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.guide-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.guide-card h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.guide-content p {
    font-size: 0.95rem;
    color: var(--gray-600);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.guide-content p:last-child {
    margin-bottom: 0;
}

/* ===== FAQ Section ===== */
.faq-section {
    padding: 5rem 0;
    background: var(--white);
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 0 1.5rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===== SEO Content Section ===== */
.seo-content {
    padding: 5rem 0;
    background: var(--gray-50);
}

.seo-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.seo-wrapper h2 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.seo-wrapper h3 {
    font-size: 1.375rem;
    color: var(--secondary);
    margin: 2rem 0 1rem;
}

.seo-wrapper p {
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--secondary);
    color: var(--gray-300);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 1.25rem;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--gray-400);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-700);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.affiliate-disclosure {
    font-size: 0.8rem;
    color: var(--gray-500);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.75rem;
    }

    .hero-subtitle {
        margin: 0 auto 2rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image {
        order: -1;
        margin-bottom: 2rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .compare-slots {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-link {
        padding: 1rem 0;
        display: block;
        border-bottom: 1px solid var(--gray-100);
    }

    .hero {
        padding: 6rem 0 3rem;
        min-height: auto;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .cooker-body {
        width: 200px;
        height: 190px;
    }

    .cooker-lid {
        width: 180px;
        height: 60px;
    }

    .cooker-display {
        top: 55px;
        width: 90px;
        height: 30px;
        font-size: 0.8rem;
    }

    .cooker-buttons {
        bottom: 25px;
    }

    .btn-cooker {
        width: 30px;
        height: 30px;
    }

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

    .section-title {
        font-size: 1.75rem;
    }

    .filter-controls {
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand .logo {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .btn {
        width: 100%;
    }

    .product-actions {
        flex-direction: column;
    }
}

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

.product-card {
    animation: fadeIn 0.5s ease forwards;
}

/* ===== Print Styles ===== */
@media print {
    .header,
    .hero-image,
    .filter-controls,
    .compare-section,
    .footer {
        display: none;
    }

    .product-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}