/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    /* Color Palette - Red/Beige Theme */
    --primary-red: #C8302E;
    --primary-red-dark: #A02826;
    --primary-red-light: #E04844;
    --beige: #F5EBE0;
    --beige-dark: #E8D5C4;
    --beige-light: #FBF6F1;
    --dark: #1A1A1A;
    --dark-gray: #333333;
    --medium-gray: #666666;
    --light-gray: #E5E5E5;
    --white: #FFFFFF;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--beige-light);
}

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

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

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

ul {
    list-style: none;
}

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(251, 246, 241, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--beige-dark);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: var(--spacing-xs) 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.5px;
    color: var(--primary-red);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-img {
    height: 42px;
    width: auto;
    display: block;
}

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

.nav-menu a {
    font-weight: var(--font-weight-medium);
    color: var(--dark-gray);
    transition: color var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--primary-red);
}

.nav-cta {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--primary-red);
    color: var(--white) !important;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.nav-cta:hover {
    background-color: var(--primary-red-dark);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
    opacity: 1 !important;
    transform: none !important;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--beige-light) 0%, var(--beige) 50%, var(--beige-dark) 100%);
    z-index: -1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(200, 48, 46, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    align-items: center;
}

.hero-logo {
    width: min(480px, 80vw);
    height: auto;
    display: block;
}

.title-main {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -2px;
    color: var(--primary-red);
    line-height: 1;
}

.title-sub {
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: var(--font-weight-light);
    color: var(--dark-gray);
    letter-spacing: -0.5px;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.8;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background-color: var(--primary-red);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(200, 48, 46, 0.3);
    transition: all var(--transition-normal);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-red-dark);
    transform: translateY(-5px);
    box-shadow: 0 6px 30px rgba(200, 48, 46, 0.4);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   CTA Buttons
   ============================================ */
.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.cta-primary:hover {
    background-color: var(--primary-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(200, 48, 46, 0.3);
}

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

.cta-secondary:hover {
    background-color: var(--primary-red);
    color: var(--white);
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--spacing-xxl) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

section.fade-in {
    opacity: 1;
    transform: translateY(0);
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-extrabold);
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--medium-gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ============================================
   About Section
   ============================================ */
.about {
    background-color: var(--white);
}

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

.about-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--dark-gray);
    text-align: center;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: linear-gradient(180deg, var(--beige-light) 0%, var(--white) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-sm);
}

.service-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border: 2px solid var(--beige-dark);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background-color: var(--primary-red);
    transition: height var(--transition-normal);
}

.service-card:hover::before {
    height: 100%;
}

.service-card:hover {
    border-color: var(--primary-red);
    box-shadow: 0 10px 40px rgba(200, 48, 46, 0.15);
    transform: translateX(5px);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.service-card:hover h3 {
    color: var(--primary-red);
}

.service-card p {
    color: var(--medium-gray);
    line-height: 1.6;
    font-size: 0.95rem;
}

.service-card-details {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--light-gray);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-normal);
}

.service-card:hover .service-card-details {
    max-height: 200px;
    opacity: 1;
}

.service-card-details ul {
    list-style: none;
    padding-left: 0;
}

.service-card-details li {
    color: var(--medium-gray);
    font-size: 0.875rem;
    padding: 0.25rem 0;
    padding-left: 1rem;
    position: relative;
}

.service-card-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-red);
}

/* ============================================
   Services List Section
   ============================================ */
.services-list {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
}

.services-list .section-header {
    margin-bottom: var(--spacing-md);
}

.services-list .section-title {
    color: var(--white);
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.services-list .section-subtitle {
    color: var(--beige);
    margin-top: var(--spacing-sm);
}

.services-columns {
    max-width: 900px;
    margin: 0 auto;
}

.services-checklist {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.services-checklist li {
    padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) 2.5rem;
    background-color: rgba(255, 255, 255, 0.08);
    border-left: 3px solid transparent;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    position: relative;
}

.services-checklist li::before {
    content: '✓';
    position: absolute;
    left: var(--spacing-sm);
    color: var(--beige);
    font-weight: var(--font-weight-bold);
    font-size: 1.25rem;
}

.services-checklist li:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-left-color: var(--beige);
    padding-left: 3rem;
}

/* ============================================
   Clients Section - Carousel
   ============================================ */
.clients {
    background-color: var(--beige-light);
    overflow: hidden;
}

.clients-carousel-wrapper {
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    position: relative;
}

.clients-carousel-wrapper::before,
.clients-carousel-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    width: 100px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.clients-carousel-wrapper::before {
    left: 0;
    background: linear-gradient(to right, var(--beige-light), transparent);
}

.clients-carousel-wrapper::after {
    right: 0;
    background: linear-gradient(to left, var(--beige-light), transparent);
}

.clients-carousel {
    overflow: hidden;
    padding: var(--spacing-md) 0;
}

.clients-track {
    display: flex;
    gap: var(--spacing-md);
    animation: scroll-clients 30s linear infinite;
    width: fit-content;
}

.client-logo {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
    min-height: 140px;
    transition: all var(--transition-normal);
    border: 1px solid var(--light-gray);
    flex-shrink: 0;
}

.client-logo:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-red);
}

.client-logo img {
    max-width: 160px;
    max-height: 90px;
    object-fit: contain;
    opacity: 1;
    transition: all var(--transition-normal);
}

@keyframes scroll-clients {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: linear-gradient(180deg, var(--white) 0%, var(--beige-light) 100%);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: var(--font-weight-semibold);
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-red);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: var(--font-weight-medium);
    display: none;
}

.form-message.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--beige);
}

.footer-section p,
.footer-section a {
    color: var(--light-gray);
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--primary-red-light);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-links a {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--medium-gray);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}


/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --spacing-xxl: 5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--beige-light);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--beige-dark);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-normal);
        pointer-events: none;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .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(7px, -7px);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .services-checklist {
        grid-template-columns: 1fr;
    }
    
    .clients-carousel-wrapper::before,
    .clients-carousel-wrapper::after {
        width: 50px;
    }
    
    .client-logo {
        min-width: 180px;
        min-height: 120px;
    }
    
    .client-logo img {
        max-width: 140px;
        max-height: 80px;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
    }

    .logo-img {
        height: 36px;
    }

    .hero-logo {
        width: min(360px, 85vw);
    }
}

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

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-red);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .scroll-indicator,
    .footer {
        display: none;
    }
    
    section {
        page-break-inside: avoid;
    }
}