/* ============================================
   CSS Variables (Design System Colors)
   ============================================ */
:root {
    /* Primary Colors */
    --color-primary: #F5A623;
    --color-primary-dark: #E8940F;
    --color-primary-light: #FFD993;
    
    /* Secondary Colors */
    --color-secondary: #4ECDC4;
    --color-secondary-light: #A8E6E1;
    
    /* Background Colors */
    --color-bg-warm: #FFF8F0;
    --color-bg-white: #FFFFFF;
    --color-bg-orange: #ed9b19;
    
    /* Card Colors */
    --color-card-yellow: #FEF3E2;
    --color-card-pink: #FDEEF4;
    --color-card-blue: #E8F4FD;
    --color-card-green: #E8F5E8;
    
    /* Text Colors */
    --color-text-primary: #3D3D3D;
    --color-text-secondary: #6B6B6B;
    --color-text-on-primary: #FFFFFF;
    
    /* Accent Colors */
    --color-nature-green: #5B8C5A;
    
    /* Spacing (8dp Grid) */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-xxl: 3rem;     /* 48px */
    --spacing-xxxl: 4rem;    /* 64px */
    
    /* Typography */
    --font-family-primary: 'Nunito', 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-fallback: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Border Radius */
    --radius-sm: 0.5rem;     /* 8px */
    --radius-md: 1rem;       /* 16px */
    --radius-lg: 1.5rem;     /* 24px */
    --radius-xl: 1.75rem;   /* 28px */
    
    /* Shadows */
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-button: 0 4px 8px rgba(245, 166, 35, 0.3);
    --shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding-mobile: 1rem;
    --container-padding-tablet: 1.5rem;
    --container-padding-desktop: 2rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-warm);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    opacity: 0.8;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding-mobile);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--container-padding-tablet);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--container-padding-desktop);
    }
}

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

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-primary);
    font-weight: bolder;
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.feature-title,
.step-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-description,
.step-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-on-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-on-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .cta-title {
        font-size: 3rem;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    background-color: var(--color-bg-warm);
    padding: var(--spacing-xxxl) var(--spacing-md) var(--spacing-xxl);
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.wave-top,
.wave-bottom {
    position: absolute;
    left: 0;
    right: 0;
    width: 100%;
    pointer-events: none;
    z-index: 1;
}

.wave-top {
    top: 0;
}

.wave-bottom {
    bottom: 0;
    transform: translateY(25%);
}

.wave-top img,
.wave-bottom img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding-bottom: var(--spacing-xxl);
}

.hero-title {
    position: relative;
    z-index: 3;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    position: relative;
    z-index: 3;
    margin-bottom: var(--spacing-xl);
}

.hero-icon {
    margin-bottom: var(--spacing-xl);
}

.hero-icon img {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.store-badges {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.store-badge {
    display: inline-block;
    transition: transform var(--transition-fast);
}

.store-badge:hover {
    transform: scale(1.05);
}

.store-badge img {
    height: auto;
    display: block;
}

.store-badges-large .store-badge img {
    width: 180px;
    height: auto;
}

@media (min-width: 768px) {
    .hero {
        padding: var(--spacing-xxxl) var(--spacing-xl) var(--spacing-xxl);
    }
    
    .hero-icon img {
        width: 150px;
        height: 150px;
    }
    
    .store-badges-large .store-badge img {
        width: 200px;
    }
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background-color: var(--color-bg-white);
    padding: var(--spacing-xxxl) var(--spacing-md);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--color-card-yellow);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    text-align: center;
}

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

.feature-card-pink {
    background-color: var(--color-card-pink);
}

.feature-card-blue {
    background-color: var(--color-card-blue);
}

.feature-card-green {
    background-color: var(--color-card-green);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    line-height: 1;
}

.feature-title {
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .feature-card {
        padding: var(--spacing-xl);
    }
}

/* ============================================
   Carousel Section
   ============================================ */
.carousel-section {
    background-color: var(--color-bg-warm);
    padding: var(--spacing-xxxl) var(--spacing-md);
}

.carousel-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.carousel-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    background-color: var(--color-bg-white);
}

.carousel-track {
    display: flex;
    transition: transform var(--transition-slow);
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

.carousel-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: var(--color-text-on-primary);
    padding: var(--spacing-lg);
    text-align: center;
    font-size: 0.875rem;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--color-text-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-card);
    z-index: 10;
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-hover);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.carousel-btn-prev {
    left: var(--spacing-md);
}

.carousel-btn-next {
    right: var(--spacing-md);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(61, 61, 61, 0.3);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.carousel-dot:hover {
    background-color: rgba(61, 61, 61, 0.5);
}

.carousel-dot.active {
    background-color: var(--color-primary);
    width: 32px;
    border-radius: 6px;
}

.carousel-dot:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

@media (min-width: 768px) {
    .carousel-btn {
        width: 56px;
        height: 56px;
    }
    
    .carousel-btn-prev {
        left: var(--spacing-lg);
    }
    
    .carousel-btn-next {
        right: var(--spacing-lg);
    }
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
    background-color: var(--color-bg-orange);
    padding: var(--spacing-xxxl) var(--spacing-md);
    position: relative;
    z-index: 1;
    overflow: visible;
}

.steps-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.step-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-card);
    text-align: center;
    position: relative;
    transition: all var(--transition-normal);
}

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

.step-number {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    width: 32px;
    height: 32px;
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.step-icon {
    font-size: 3rem;
    margin: var(--spacing-md) 0 var(--spacing-md);
    line-height: 1;
}

.step-title {
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
    .steps-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .steps-container {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   Call-to-Action Section
   ============================================ */
.cta-section {
    display: block;
    background: var(--color-bg-orange);
    position: relative;
    overflow: visible;
    z-index: 2;
}

.cta-waves {
    width: 100%;
    height: auto;
    line-height: 0;
    overflow: visible;
    position: relative;
    z-index: 10;
    display: block;
    margin: 0;
    padding: 0;
    top: 0;
}

.cta-waves img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    object-position: bottom;
    vertical-align: bottom;
}

.cta-content {
    background-color: var(--color-nature-green);
    padding: var(--spacing-xxxl) var(--spacing-md) var(--spacing-xxl);
    text-align: center;
    width: 100%;
    position: relative;
    z-index: 1;
    display: block;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--color-text-primary);
    color: var(--color-text-on-primary);
    padding: var(--spacing-xl) var(--spacing-md);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    text-align: center;
}

.footer-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-on-primary);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text-on-primary);
    opacity: 1;
}

.footer-copyright {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .footer-brand {
        text-align: left;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .hero,
    .carousel-section,
    .cta-section,
    .footer {
        page-break-inside: avoid;
    }
    
    .carousel-btn,
    .carousel-dots {
        display: none;
    }
}