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

:root {
    --color-primary: #1a1a1a;
    --color-secondary: #2c3e50;
    --color-accent: #c41e3a;
    --color-accent-hover: #a01a2e;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-border: #e0e0e0;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -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;
}

/* ============================================
   Container
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    background-color: var(--color-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-md);
    position: relative;
    width: 100%;
}

.header-left {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    z-index: 1;
}

.header-right {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-shrink: 0;
    z-index: 1;
}

@media (min-width: 768px) {
    .header-content {
        padding: var(--spacing-md) 0;
    }
    
    .header-right {
        display: flex;
        justify-content: flex-end;
        align-items: center;
    }
}

@media (max-width: 767px) {
    .header-content {
        grid-template-columns: 1fr auto;
        justify-content: space-between;
    }
}

.logo {
    display: flex;
    align-items: center;
    height: 100%;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin: 0;
}

.logo-img {
    height: 80px;
    width: auto;
    object-fit: contain;
    object-position: left center;
}

.logo-right {
    display: none;
    object-position: right center;
}

@media (min-width: 768px) {
    .logo h1 {
        font-size: 1.75rem;
    }
    
    .logo-img {
        height: 120px;
        width: auto;
    }
    
    .logo-right {
        display: block;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 3px;
    transition: var(--transition);
    transform-origin: center;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-bg);
    box-shadow: var(--shadow-lg);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
}

@media (min-width: 768px) {
    .nav {
        position: static !important;
        top: auto !important;
        right: auto !important;
        width: 100%;
        height: auto;
        box-shadow: none;
        padding: 0;
        background: transparent;
        display: flex;
        justify-content: center;
        align-items: center;
        grid-column: 2;
        grid-row: 1;
        margin: 0;
        overflow: visible;
    }
}

.nav.active {
    right: 0;
}

@media (min-width: 768px) {
    .nav {
        position: static;
        width: 100%;
        height: auto;
        box-shadow: none;
        padding: 0;
        background: transparent;
        display: flex;
        justify-content: center;
        align-items: center;
        grid-column: 2;
        grid-row: 1;
        margin: 0;
        overflow: visible;
    }
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

@media (min-width: 768px) {
    .nav-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        align-items: center;
        justify-content: center;
        max-width: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
    }
}

@media (min-width: 1024px) {
    .nav-list {
        flex-wrap: nowrap;
        gap: var(--spacing-md);
    }
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.9rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    background-color: var(--color-bg-light);
}

@media (min-width: 768px) {
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
    }
}

@media (min-width: 1024px) {
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.9rem;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
}

@media (min-width: 768px) {
    .hero {
        min-height: 600px;
    }
}

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

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

@media (min-width: 768px) {
    .contact-info {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-xl);
    }
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    font-weight: 500;
}

.contact-item:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.contact-item .icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@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 {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.feature-card p {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ============================================
   Configurator Grid
   ============================================ */
.configurator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

@media (min-width: 480px) {
    .configurator-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .configurator-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.configurator-card {
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    color: var(--color-text);
}

.configurator-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: var(--color-accent);
}

.configurator-logo {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
    text-align: center;
    padding: var(--spacing-md) 0;
}

.configurator-card:hover .configurator-logo {
    color: var(--color-accent);
}

.configurator-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin: 0;
}

.configurator-card:hover p {
    color: var(--color-accent);
}

/* ============================================
   Content Pages
   ============================================ */
.content-page {
    padding: var(--spacing-xl) 0;
}

.content-page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .content-page h1 {
        font-size: 2.5rem;
    }
}

.content-page h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.content-page p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    line-height: 1.8;
}

.content-page ul,
.content-page ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.content-page li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.content-page img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
}

.content-section {
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-2xl);
}

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

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

.copyright {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

@media (min-width: 768px) {
    .footer-nav-list {
        justify-content: flex-end;
    }
}

.footer-nav-list a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-nav-list a:hover {
    color: white;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

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

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip to content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}