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

:root {
    /* Color Palette - inspired by logos */
    --color-primary: #000000;
    --color-secondary: #1a1a1a;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-background: #ffffff;
    --color-background-alt: #f8f9fa;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --color-error: #ef4444;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Layout */
    --container-width: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* ===========================
   Base Styles
   =========================== */
html {
    scroll-behavior: smooth;
}

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

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

/* ===========================
   Navigation
   =========================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
}

.nav-logo .logo-img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    padding: var(--spacing-xs) 0;
}

.nav-link:hover {
    color: var(--color-primary);
    font-weight: 600;
}

.nav-link-cta {
    background-color: var(--color-primary);
    color: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-primary);
}

.nav-link-cta:hover {
    background-color: var(--color-background);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

/* Language Selector */
.language-selector {
    position: relative;
    margin-left: var(--spacing-md);
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 6px 12px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.lang-current:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.lang-flag {
    font-size: 1.25rem;
    line-height: 1;
}

.lang-code {
    font-weight: 600;
    letter-spacing: 0.02em;
}

.lang-chevron {
    transition: transform 0.2s ease;
}

.lang-dropdown.active .lang-chevron {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    min-width: 100px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1001;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-options {
    padding: 4px;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.lang-option:hover {
    background-color: var(--color-background-alt);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 50%, #333333 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.hero-graphic::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.3; }
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--color-background);
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

.btn-secondary:hover {
    background-color: var(--color-background);
    color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-full {
    width: 100%;
}

/* ===========================
   Product Section
   =========================== */
.product {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background-color: var(--color-background);
}

.product-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.product-logo {
    height: 60px;
    width: auto;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background-color: var(--color-background-alt);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background-color: var(--color-primary);
    color: var(--color-background);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

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

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

.cta-box {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-background);
    padding: var(--spacing-3xl) var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
}

.cta-box h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.cta-box p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

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

.cta-box .btn-primary:hover {
    background-color: var(--color-primary);
    color: var(--color-background);
    border-color: var(--color-background);
}

/* ===========================
   About Section
   =========================== */
.about {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background-color: var(--color-background-alt);
}

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

.about-text {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-partnership {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
}

.partnership-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.partnership-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background-color: var(--color-background);
}

.contact-section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.contact-section-description {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
    line-height: 1.6;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    max-width: 1200px;
    margin: 0 auto;
}

.contact-map-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-address {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-background-alt);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.address-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-background);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.address-text h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.address-text p {
    color: var(--color-text-light);
    line-height: 1.6;
    font-size: 1rem;
}

.contact-map {
    width: 100%;
    height: 350px;
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.contact-map iframe {
    display: block;
}

/* ===========================
   Form Styles
   =========================== */
.contact-form {
    background-color: var(--color-background-alt);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--color-background);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

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

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    display: block;
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid var(--color-success);
}

.form-message.error {
    display: block;
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--color-error);
}

.btn-loader {
    display: none;
}

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

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

.footer-logo-img {
    height: 40px;
    width: auto;
    filter: invert(1);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

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

.footer-link {
    color: var(--color-background);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-support {
    font-weight: 500;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-container {
        position: relative;
    }

    .language-selector {
        position: absolute;
        right: 60px;
        top: 50%;
        transform: translateY(-50%);
        margin-left: 0;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-background);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .contact-map {
        height: 300px;
    }

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .cta-box h3 {
        font-size: 1.5rem;
    }
}