/* ==========================================================================
   RetailAer Website - Figma Design Implementation
   ========================================================================== */

/* CSS Custom Properties - Design System */
:root {
    /* Colors */
    --color-primary: #0a5c5c;
    --color-accent: #f5b800;
    --color-bg-light: #f0f7f7;
    --color-bg-white: #ffffff;
    --color-text-dark: #0a1f1f;
    --color-text-body: #5a7a7a;
    --color-text-light: rgba(255, 255, 255, 0.7);
    --color-text-lighter: rgba(255, 255, 255, 0.6);
    --color-border: rgba(10, 92, 92, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 36px;
    --font-size-4xl: 48px;
    --font-size-5xl: 60px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;

    /* Layout */
    --max-width: 1200px;
    --container-padding: var(--spacing-xl);
    --border-radius: 12px;
    --border-radius-large: 16px;
    --border-radius-full: 9999px;

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

/* Mobile adjustments */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 28px;
        --font-size-4xl: 32px;
        --font-size-5xl: 40px;
        --spacing-4xl: 48px;
        --container-padding: var(--spacing-md);
    }
}

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

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

html {
    scroll-behavior: smooth;
}

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

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

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

ul {
    list-style: none;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.navigation {
    background-color: var(--color-primary);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 400;
    color: var(--color-bg-white);
    letter-spacing: -0.02em;
}

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

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-base);
    letter-spacing: -0.01em;
    padding: var(--spacing-sm) 0;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-bg-white);
    transition: var(--transition);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background-color: var(--color-primary);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-lg) var(--container-padding);
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px var(--spacing-xl);
    font-size: var(--font-size-small);
    font-weight: 500;
    letter-spacing: -0.01em;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text-dark);
}

.btn-primary:hover {
    background-color: #e5a800;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 184, 0, 0.3);
}

.btn-primary-small {
    background-color: var(--color-accent);
    color: var(--color-text-dark);
    padding: 8px var(--spacing-lg);
}

.btn-primary-small:hover {
    background-color: #e5a800;
}

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

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #084848 100%);
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-bg-white);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.hero-title-accent {
    display: block;
    margin-top: var(--spacing-sm);
}

.hero-description {
    font-size: var(--font-size-xl);
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.01em;
    max-width: 450px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 400px;
}

.hero-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 184, 0, 0.15) 0%, transparent 70%);
    filter: blur(60px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.hero-icon-container {
    position: relative;
    width: 288px;
    height: 288px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-full);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.hero-icon {
    width: 200px;
    height: 200px;
    filter: drop-shadow(0 4px 20px rgba(255, 255, 255, 0.2));
}

.hero-decoration {
    position: absolute;
    border-radius: var(--border-radius-full);
    filter: blur(40px);
}

.hero-decoration-1 {
    width: 96px;
    height: 96px;
    background: rgba(245, 184, 0, 0.2);
    top: -32px;
    right: -32px;
}

.hero-decoration-2 {
    width: 128px;
    height: 128px;
    background: rgba(255, 255, 255, 0.1);
    bottom: -32px;
    left: -48px;
}

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

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 2;
        height: 300px;
    }

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

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

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-3xl) 0;
    }

    .hero-visual {
        height: 250px;
    }

    .hero-icon-container {
        width: 200px;
        height: 200px;
    }

    .hero-icon {
        width: 140px;
        height: 140px;
    }
}

/* ==========================================================================
   Stats Bar
   ========================================================================== */

.stats-bar {
    background-color: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
}

.stats-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.stat-item {
    text-align: center;
    padding: 0 var(--spacing-md);
    border-right: 1px solid var(--color-border);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-base);
    color: var(--color-text-body);
    letter-spacing: -0.01em;
}

@media (max-width: 768px) {
    .stats-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: var(--spacing-lg);
    }

    .stat-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
}

/* ==========================================================================
   Section Containers
   ========================================================================== */

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    color: var(--color-text-dark);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-large);
    color: var(--color-text-body);
    letter-spacing: -0.01em;
}

/* ==========================================================================
   Benefits Section
   ========================================================================== */

.benefits {
    background-color: var(--color-bg-white);
    padding: var(--spacing-4xl) 0;
}

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

.benefit-card {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(10, 92, 92, 0.1);
    border-color: var(--color-primary);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(10, 92, 92, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.benefit-icon svg {
    width: 24px;
    height: 24px;
}

.benefit-title {
    font-size: var(--font-size-large);
    font-weight: 400;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.benefit-description {
    font-size: var(--font-size-small);
    color: var(--color-text-body);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

@media (max-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   How It Works Section
   ========================================================================== */

.how-it-works {
    background-color: var(--color-primary);
    padding: var(--spacing-4xl) 0;
}

.how-it-works .section-title {
    color: var(--color-bg-white);
    text-align: left;
    margin-bottom: var(--spacing-3xl);
}

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

.process-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    transition: var(--transition);
}

.process-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.process-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.process-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-bg-white);
}

.process-title {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.process-description {
    font-size: var(--font-size-base);
    color: var(--color-text-body);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

@media (max-width: 1024px) {
    .process-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ==========================================================================
   Insights Section
   ========================================================================== */

.insights {
    background-color: var(--color-bg-light);
    padding: var(--spacing-4xl) 0;
}

.insights-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3xl);
}

.insights-header .section-title {
    margin-bottom: 0;
    text-align: left;
}

.link-with-arrow {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-size: var(--font-size-base);
    letter-spacing: -0.01em;
    transition: var(--transition);
}

.link-with-arrow:hover {
    gap: var(--spacing-sm);
}

.link-with-arrow svg {
    width: 20px;
    height: 20px;
}

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

.insight-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-large);
    overflow: hidden;
    transition: var(--transition);
}

.insight-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(10, 92, 92, 0.15);
}

.insight-image {
    height: 192px;
    background-color: var(--color-primary);
    opacity: 0.1;
    position: relative;
    overflow: hidden;
}

.insight-image-yellow {
    background-color: var(--color-accent);
}

.insight-placeholder {
    width: 100%;
    height: 100%;
}

.insight-content {
    padding: var(--spacing-lg);
}

.insight-tag {
    font-size: 12px;
    color: var(--color-text-body);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
}

.insight-title {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.insight-excerpt {
    font-size: var(--font-size-small);
    color: var(--color-text-body);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

@media (max-width: 1024px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }

    .insights-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #084848 100%);
    padding: var(--spacing-4xl) 0;
}

.cta-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    text-align: center;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 400;
    color: var(--color-bg-white);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.01em;
}

.cta-description {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.4;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.01em;
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

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

.footer {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-3xl) 0 0;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    max-width: 250px;
}

.footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: 400;
    color: var(--color-bg-white);
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    font-size: var(--font-size-small);
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

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

.footer-links h4 {
    font-size: var(--font-size-small);
    color: var(--color-accent);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-bg-white);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
}

.footer-legal-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal-links a {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
}

.footer-legal-links a:hover {
    color: var(--color-bg-white);
}

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-brand {
        grid-column: 1 / -1;
        max-width: 100%;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-legal-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

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

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}