/* ================================
   Pet Turf Deodorizer - Main Styles
   Theme: Eco-Friendly & Money-Wise
   ================================ */

/* CSS Variables */
:root {
    /* Primary Colors - Nature/Eco Green */
    --primary-50: #f0fdf4;
    --primary-100: #dcfce7;
    --primary-200: #bbf7d0;
    --primary-300: #86efac;
    --primary-400: #4ade80;
    --primary-500: #22c55e;
    --primary-600: #16a34a;
    --primary-700: #15803d;
    --primary-800: #166534;
    --primary-900: #14532d;

    /* Secondary Colors - Earthy Brown/Gold (Money-wise) */
    --secondary-50: #fefce8;
    --secondary-100: #fef9c3;
    --secondary-200: #fef08a;
    --secondary-300: #fde047;
    --secondary-400: #facc15;
    --secondary-500: #eab308;
    --secondary-600: #ca8a04;
    --secondary-700: #a16207;
    --secondary-800: #854d0e;
    --secondary-900: #713f12;

    /* Neutrals */
    --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;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: #fff;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

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

/* ================================
   Typography
   ================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

h4 {
    font-size: 1.125rem;
}

p {
    color: var(--gray-600);
}

/* ================================
   Layout
   ================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

section {
    padding: var(--space-4xl) 0;
}

/* ================================
   Components - Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    color: #fff;
    box-shadow: 0 4px 14px 0 rgba(22, 163, 74, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(22, 163, 74, 0.4);
}

.btn-secondary {
    background: #fff;
    color: var(--primary-700);
    border: 2px solid var(--primary-200);
}

.btn-secondary:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
}

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

.btn-xl {
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
    border-radius: var(--radius-xl);
}

.btn-nav {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

/* ================================
   Components - Badges
   ================================ */
.section-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-700);
    background: var(--primary-100);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

/* ================================
   Navigation
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-100);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-800);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--primary-600);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a:not(.btn) {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition-fast);
}

.nav-links a:not(.btn):hover {
    color: var(--primary-600);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-fast);
}

/* ================================
   Hero Section
   ================================ */
.hero {
    position: relative;
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(180deg, var(--primary-50) 0%, #fff 100%);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary-700);
    background: var(--secondary-100);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.hero-badge svg {
    color: var(--secondary-500);
    fill: var(--secondary-400);
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero h1 .highlight {
    color: var(--primary-600);
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--space-xl);
    max-width: 540px;
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-700);
}

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

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.hero-guarantee {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--gray-600);
}

.hero-guarantee svg {
    color: var(--primary-500);
}

/* Hero Image */
.hero-image {
    position: relative;
}

.hero-image-wrapper {
    position: relative;
    padding: var(--space-xl);
}

.product-showcase {
    position: relative;
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-50) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-xl);
}

.product-badge {
    position: absolute;
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.eco-badge {
    top: 20px;
    left: 20px;
    background: var(--primary-600);
    color: #fff;
}

.savings-badge {
    top: 20px;
    right: 20px;
    background: var(--secondary-500);
    color: var(--gray-900);
}

.product-image {
    width: 100%;
    height: auto;
    max-width: 400px;
    margin: 0 auto;
    display: block;
}

/* Hero Wave */
.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ================================
   Problem/Solution Section
   ================================ */
.problem-solution {
    background: #fff;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-header p {
    font-size: 1.125rem;
    margin-top: var(--space-md);
}

.section-header.light h2 {
    color: #fff;
}

.section-header.light p {
    color: rgba(255, 255, 255, 0.8);
}

.section-header.light .section-badge {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

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

.problem-card {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-100);
}

.problem-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    padding: var(--space-md);
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.problem-icon svg {
    width: 100%;
    height: 100%;
    color: var(--error);
}

.problem-card h3 {
    margin-bottom: var(--space-sm);
}

/* ================================
   How It Works Section
   ================================ */
.how-it-works {
    background: var(--gray-50);
}

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

.step-card {
    position: relative;
    text-align: center;
    padding: var(--space-2xl);
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 10px rgba(22, 163, 74, 0.3);
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: var(--space-lg) auto;
    color: var(--primary-600);
}

.step-icon svg {
    width: 100%;
    height: 100%;
}

.step-image {
    margin: var(--space-md) auto var(--space-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.step-image img {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: contain;
}

.step-card h3 {
    margin-bottom: var(--space-sm);
}

/* Video Section */
.demo-video {
    max-width: 800px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-900) 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.video-container video.playing {
    object-fit: contain;
    background: #000;
}

.video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: linear-gradient(135deg, rgba(21, 128, 61, 0.9) 0%, rgba(20, 83, 45, 0.95) 100%);
    transition: opacity var(--transition-base);
}

.video-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.play-button {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: var(--radius-full);
    color: var(--primary-600);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    z-index: 1;
}

.video-overlay:hover .play-button {
    transform: scale(1.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.play-button svg {
    width: 32px;
    height: 32px;
    margin-left: 4px;
}

.video-overlay p {
    margin-top: var(--space-lg);
    color: #fff;
    font-weight: 600;
    z-index: 1;
}

/* Video controls styling */
.video-container video::-webkit-media-controls-panel {
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

/* Mobile video adjustments */
@media (max-width: 768px) {
    .play-button {
        width: 64px;
        height: 64px;
    }

    .play-button svg {
        width: 24px;
        height: 24px;
    }

    .video-overlay p {
        font-size: 0.875rem;
    }
}

/* ================================
   Savings Section
   ================================ */
.savings {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-900) 100%);
    color: #fff;
}

.comparison-table {
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.comparison-header {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    background: rgba(0, 0, 0, 0.2);
    padding: var(--space-lg);
    font-weight: 600;
}

.comparison-col {
    text-align: center;
}

.comparison-col.ours {
    color: var(--secondary-300);
}

.comparison-col small {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.7;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row.highlight {
    background: rgba(234, 179, 8, 0.2);
    padding: var(--space-lg);
}

.comparison-label {
    font-weight: 500;
}

.comparison-value {
    text-align: center;
    font-weight: 600;
}

.comparison-value.competitor {
    opacity: 0.7;
    text-decoration: line-through;
}

.comparison-value.ours {
    color: var(--secondary-300);
}

.savings-amount {
    font-size: 1.5rem;
    color: var(--secondary-300) !important;
}

/* ROI Callout */
.roi-callout {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    max-width: 700px;
    margin: 0 auto;
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.roi-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary-400);
    border-radius: var(--radius-full);
}

.roi-icon svg {
    width: 32px;
    height: 32px;
    color: var(--gray-900);
}

.roi-content h3 {
    color: #fff;
    margin-bottom: var(--space-xs);
}

.roi-content p {
    color: rgba(255, 255, 255, 0.8);
}

/* ================================
   Eco-Friendly Section
   ================================ */
.eco-friendly {
    background: #fff;
}

.eco-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.eco-content .section-badge {
    margin-bottom: var(--space-md);
}

.eco-content h2 {
    margin-bottom: var(--space-lg);
}

.eco-content > p {
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

.eco-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.eco-features li {
    display: flex;
    gap: var(--space-md);
}

.eco-features li svg {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--primary-500);
}

.eco-features li strong {
    display: block;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.eco-features li span {
    font-size: 0.9375rem;
    color: var(--gray-500);
}

/* Eco Visual */
.eco-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.eco-badge-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-3xl);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    border-radius: var(--radius-2xl);
}

.eco-badge-large svg {
    width: 120px;
    height: 120px;
    color: var(--primary-600);
}

.eco-badge-large span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-700);
}

.eco-badge-img {
    width: 200px;
    height: auto;
    filter: drop-shadow(0 10px 20px rgba(22, 163, 74, 0.2));
}

/* ================================
   Reviews Section
   ================================ */
.reviews {
    background: var(--gray-50);
}

.overall-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.stars {
    display: flex;
    gap: 2px;
}

.stars svg {
    width: 20px;
    height: 20px;
    color: var(--secondary-400);
}

.overall-rating span {
    color: var(--gray-500);
}

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

.review-card {
    padding: var(--space-xl);
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.review-stars {
    display: flex;
    gap: 2px;
    margin-bottom: var(--space-md);
}

.review-stars svg {
    width: 18px;
    height: 18px;
    color: var(--secondary-400);
}

.review-text {
    font-size: 1rem;
    color: var(--gray-700);
    font-style: italic;
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.review-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-100);
    color: var(--primary-700);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.author-info strong {
    display: block;
    color: var(--gray-900);
}

.author-info span {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ================================
   Purchase Section
   ================================ */
.purchase {
    background: linear-gradient(180deg, #fff 0%, var(--primary-50) 100%);
}

.purchase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.purchase-content h2 {
    margin-bottom: var(--space-md);
}

.purchase-content > p {
    font-size: 1.125rem;
    margin-bottom: var(--space-2xl);
}

.purchase-includes {
    padding: var(--space-xl);
    background: #fff;
    border-radius: var(--radius-xl);
    border: 2px solid var(--primary-100);
}

.purchase-includes h4 {
    margin-bottom: var(--space-lg);
    color: var(--gray-900);
}

.purchase-includes ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.purchase-includes li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--gray-700);
}

.purchase-includes li svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--primary-500);
}

/* Purchase Card */
.purchase-card {
    text-align: center;
    padding: var(--space-2xl);
    background: #fff;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    border: 2px solid var(--primary-200);
}

.price-tag {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.price-strike {
    font-size: 1.25rem;
    color: var(--gray-400);
    text-decoration: line-through;
}

.price-current {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-700);
}

.price-save {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    background: var(--error);
    border-radius: var(--radius-full);
}

.purchase-card .btn {
    width: 100%;
    margin-bottom: var(--space-xl);
}

.purchase-trust {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.trust-item svg {
    width: 18px;
    height: 18px;
    color: var(--primary-500);
}

.secure-checkout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--gray-500);
}

.secure-checkout svg {
    width: 16px;
    height: 16px;
}

/* ================================
   FAQ Section
   ================================ */
.faq {
    background: #fff;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    padding: var(--space-xl);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.faq-item h4 {
    margin-bottom: var(--space-sm);
    color: var(--gray-900);
}

.faq-item p {
    font-size: 0.9375rem;
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--gray-900);
    color: #fff;
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-lg);
    color: #fff;
}

.footer-brand .logo-icon {
    color: var(--primary-400);
}

.footer-brand > p {
    color: var(--gray-400);
    max-width: 280px;
    margin-bottom: var(--space-xl);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    border-radius: var(--radius-md);
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-600);
    color: #fff;
}

.social-links a svg {
    width: 20px;
    height: 20px;
}

.footer-links h4 {
    color: #fff;
    margin-bottom: var(--space-lg);
    font-size: 1rem;
}

.footer-links a {
    display: block;
    padding: var(--space-xs) 0;
    color: var(--gray-400);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-400);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--space-xl);
}

.footer-legal a {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.footer-legal a:hover {
    color: var(--gray-300);
}

/* ================================
   Mobile Menu
   ================================ */
.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 999;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-md);
}

.mobile-menu-content a {
    padding: var(--space-md);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius-md);
}

.mobile-menu-content a:hover {
    background: var(--gray-50);
}

.mobile-menu-content .btn {
    margin-top: var(--space-md);
}

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

/* Tablet and below */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-xl);
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 0;
        margin-bottom: var(--space-lg);
    }

    .product-showcase {
        padding: var(--space-xl);
        max-width: 350px;
        margin: 0 auto;
    }

    .product-image {
        max-width: 300px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

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

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

    .problems-grid,
    .steps-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .step-image img {
        max-height: 180px;
    }

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

    .eco-visual {
        order: -1;
        margin-bottom: var(--space-xl);
    }

    .eco-features {
        text-align: left;
        max-width: 400px;
        margin: 0 auto;
    }

    .purchase-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .purchase-content {
        text-align: center;
    }

    .purchase-includes {
        max-width: 400px;
        margin: 0 auto;
        text-align: left;
    }

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

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

/* Mobile */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding-top: 100px;
        padding-bottom: 60px;
    }

    h1 {
        font-size: 2rem;
        line-height: 1.2;
    }

    h2 {
        font-size: 1.625rem;
    }

    section {
        padding: var(--space-2xl) 0;
    }

    .section-header {
        margin-bottom: var(--space-2xl);
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        gap: var(--space-xl);
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .product-showcase {
        padding: var(--space-lg);
    }

    .product-badge {
        font-size: 0.625rem;
        padding: 0.375rem 0.625rem;
    }

    .product-image {
        max-width: 250px;
    }

    .problem-card,
    .step-card,
    .review-card {
        padding: var(--space-lg);
    }

    .step-image img {
        max-height: 150px;
    }

    .comparison-table {
        border-radius: var(--radius-lg);
    }

    .comparison-header {
        padding: var(--space-md);
        font-size: 0.875rem;
    }

    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr 1fr;
    }

    .comparison-col:first-child {
        display: none;
    }

    .comparison-label {
        grid-column: 1 / -1;
        text-align: center;
        padding-bottom: var(--space-sm);
        margin-bottom: var(--space-sm);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 0.875rem;
    }

    .comparison-row {
        padding: var(--space-sm) var(--space-md);
    }

    .comparison-value {
        font-size: 0.9375rem;
    }

    .savings-amount {
        font-size: 1.25rem !important;
    }

    .roi-callout {
        flex-direction: column;
        text-align: center;
        padding: var(--space-lg);
    }

    .roi-icon {
        width: 56px;
        height: 56px;
    }

    .eco-badge-img {
        width: 150px;
    }

    .review-text {
        font-size: 0.9375rem;
    }

    .purchase-card {
        padding: var(--space-xl);
    }

    .price-current {
        font-size: 2.5rem;
    }

    .purchase-trust {
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }

    .trust-item {
        font-size: 0.75rem;
    }

    .faq-item {
        padding: var(--space-lg);
    }

    .faq-item h4 {
        font-size: 1rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }

    .footer-brand > p {
        margin-left: auto;
        margin-right: auto;
    }

    .social-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .footer-legal {
        flex-direction: column;
        gap: var(--space-sm);
    }

    /* Improve touch targets */
    .btn {
        min-height: 48px;
        padding: 0.875rem 1.5rem;
    }

    .btn-lg {
        min-height: 52px;
    }

    .social-links a {
        width: 48px;
        height: 48px;
    }

    /* Mobile menu improvements */
    .mobile-menu-content a {
        min-height: 48px;
        display: flex;
        align-items: center;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

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

    .btn-lg, .btn-xl {
        width: 100%;
    }

    .product-showcase {
        padding: var(--space-md);
    }

    .product-badge {
        position: static;
        display: inline-block;
        margin: var(--space-xs);
    }

    .product-image {
        max-width: 200px;
    }

    .step-image img {
        max-height: 120px;
    }

    .price-tag {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-sm);
    }

    .price-strike {
        font-size: 1rem;
    }

    .price-current {
        font-size: 2rem;
    }

    .comparison-header {
        font-size: 0.75rem;
    }

    .comparison-col small {
        font-size: 0.625rem;
    }

    .eco-features li {
        flex-direction: column;
        text-align: center;
    }

    .eco-features li svg {
        margin: 0 auto var(--space-sm);
    }
}

/* Landscape phones */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding-top: 80px;
        padding-bottom: 40px;
    }

    .hero-image {
        max-width: 40%;
        float: right;
        margin-left: var(--space-lg);
    }

    .hero-container {
        display: block;
    }

    .hero-content {
        text-align: left;
    }
}

/* Ensure images don't overflow */
@media (max-width: 768px) {
    img, svg {
        max-width: 100%;
        height: auto;
    }
}