/* ============================================
   StyleStepMen - Premium Men's Footwear
   Lightweight, Fast-Loading, SEO-Optimized
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-primary: #1a2744;
    --color-primary-dark: #0f172a;
    --color-primary-light: #2d3e5f;
    --color-accent: #d4a574;
    --color-accent-hover: #c49a6c;
    --color-background: #f8f9fa;
    --color-surface: #ffffff;
    --color-text: #1a2744;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;
    --color-border: #e5e7eb;
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
}

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

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

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

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

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    padding: var(--space-2) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    z-index: 1001;
}

.nav-toggle-bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding-top: calc(72px + var(--space-16));
    padding-bottom: var(--space-20);
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero-content {
    max-width: 540px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-primary);
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-align: center;
}

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

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

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

.btn-secondary:hover,
.btn-secondary:focus {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: var(--color-surface);
}

.btn-cta {
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
    font-size: var(--text-lg);
    padding: var(--space-5) var(--space-10);
}

.btn-cta:hover,
.btn-cta:focus {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-12);
}

.section-title {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--space-20) 0;
    background-color: var(--color-surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.feature-card {
    padding: var(--space-8);
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: var(--color-primary);
    color: var(--color-accent);
    border-radius: 50%;
    margin-bottom: var(--space-6);
}

.feature-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.feature-description {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   Social Proof Section
   ============================================ */
.social-proof {
    padding: var(--space-20) 0;
    background-color: var(--color-background);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-16);
}

.testimonial-card {
    padding: var(--space-8);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.testimonial-rating {
    color: var(--color-accent);
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-4);
    font-style: italic;
}

.testimonial-author {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.testimonial-author cite {
    font-style: normal;
}

/* Trust Badges */
.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-16);
    flex-wrap: wrap;
}

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

.trust-number {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.trust-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

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

.cta-content {
    max-width: 640px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-surface);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.cta-description {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.cta-note {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--space-4);
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: var(--space-20) 0;
    background-color: var(--color-surface);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: var(--space-20) 0;
    background-color: var(--color-background);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
    text-align: center;
}

.contact-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.contact-link {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-primary);
}

.contact-link:hover {
    color: var(--color-accent);
}

.contact-text {
    font-size: var(--text-lg);
    color: var(--color-text);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-12) 0 var(--space-6);
    background-color: var(--color-primary-dark);
    color: var(--color-surface);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
    gap: var(--space-6);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    display: block;
    margin-bottom: var(--space-2);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer-link {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-3);
}

.affiliate-disclaimer {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.5;
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    z-index: 999;
}

.back-to-top:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.back-to-top[hidden] {
    display: none;
}

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

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .trust-badges {
        gap: var(--space-10);
    }
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
    :root {
        --container-padding: 1rem;
        --text-5xl: 2rem;
        --text-4xl: 1.75rem;
        --text-3xl: 1.5rem;
    }
    
    .header-container {
        height: 64px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--color-surface);
        flex-direction: column;
        padding: var(--space-6);
        gap: var(--space-4);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        font-size: var(--text-lg);
        padding: var(--space-3) 0;
    }
    
    .hero {
        padding-top: calc(64px + var(--space-10));
        padding-bottom: var(--space-12);
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-description {
        font-size: var(--text-base);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .features {
        padding: var(--space-12) 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: var(--space-6);
    }
    
    .social-proof {
        padding: var(--space-12) 0;
    }
    
    .trust-badges {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .cta-section {
        padding: var(--space-12) 0;
    }
    
    .cta-title {
        font-size: var(--text-3xl);
    }
    
    .about {
        padding: var(--space-12) 0;
    }
    
    .contact {
        padding: var(--space-12) 0;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-bottom {
        text-align: center;
    }
}

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

/* Print Styles */
@media print {
    .header,
    .nav-toggle,
    .back-to-top,
    .cta-section,
    .footer {
        display: none !important;
    }
    
    .hero {
        padding-top: var(--space-8);
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .section-title {
        font-size: 18pt;
    }
}

/* Focus Styles for Accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-text-muted: #374151;
        --color-border: #9ca3af;
    }
}