/* ===========================
   Serverless Native GmbH
   Custom Styles
   =========================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

/* CSS Variables - Style Guide */
:root {
    /* Primary Colors */
    --color-primary: #003a57;        /* Dark Blue */
    --color-secondary: #00c6ed;      /* Light Blue/Cyan */

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-light-gray: #f8f9fa;
    --color-gray: #e9ecef;
    --color-medium-gray: #6c757d;
    --color-dark-gray: #343a40;
    --color-black: #1a1a1a;

    /* Fonts */
    --font-title: 'Poppins', 'Arcon', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-text: 'Poppins', 'Arcon', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Font Weights */
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

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

body {
    font-family: var(--font-text);
    font-weight: var(--font-regular);
    color: var(--color-dark-gray);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    font-weight: var(--font-medium);
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--color-primary);
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.highlight {
    color: var(--color-secondary);
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

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

.navbar {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

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

.nav-brand .logo {
    height: 50px;
    width: auto;
}

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

.nav-menu a {
    color: var(--color-primary);
    font-weight: var(--font-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-menu a:hover {
    background-color: var(--color-light-gray);
    color: var(--color-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #004d6d 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-content h1 {
    color: var(--color-white);
    font-size: 3.5rem;
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-light-gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-icon {
    width: 100%;
    max-width: 400px;
    opacity: 0.9;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

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

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-title);
    font-weight: var(--font-medium);
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: transparent;
    border-color: var(--color-secondary);
    color: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* ===========================
   About Section
   =========================== */

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

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

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

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-light-gray);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal);
}

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

.stat-item h3 {
    font-size: 3rem;
    color: var(--color-secondary);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-xs);
}

.stat-item p {
    font-size: 1rem;
    color: var(--color-medium-gray);
    margin: 0;
}

/* ===========================
   Services Section
   =========================== */

.services {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-white);
}

.service-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--color-medium-gray);
    line-height: 1.7;
    margin: 0;
}

/* ===========================
   Advantages Section
   =========================== */

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

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.advantage-item {
    position: relative;
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-secondary);
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.advantage-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.advantage-number {
    font-size: 4rem;
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    opacity: 0.2;
    position: absolute;
    top: -20px;
    right: 20px;
    line-height: 1;
}

.advantage-item h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    position: relative;
    z-index: 1;
}

.advantage-item p {
    color: var(--color-medium-gray);
    margin: 0;
    position: relative;
    z-index: 1;
}

/* ===========================
   Technology Stack Section
   =========================== */

.tech-stack {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #004d6d 100%);
    color: var(--color-white);
}

.tech-stack .section-header h2,
.tech-stack .section-subtitle {
    color: var(--color-white);
}

.tech-logos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.tech-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: var(--font-medium);
    font-size: 1.125rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
}

.tech-item:hover {
    background-color: var(--color-secondary);
    transform: scale(1.05);
}

/* ===========================
   Contact Section
   =========================== */

.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.contact-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-secondary);
    flex-shrink: 0;
}

.contact-item p {
    margin: 0;
    color: var(--color-medium-gray);
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    font-family: var(--font-text);
    font-size: 1rem;
    border: 2px solid var(--color-gray);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

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

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

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

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-logo img {
    width: 50px;
    height: 50px;
    filter: brightness(0) invert(1);
}

.footer-logo p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-light-gray);
}

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

.footer-links a {
    color: var(--color-light-gray);
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--color-secondary);
}

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

@media (max-width: 968px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-icon {
        max-width: 300px;
        margin: 0 auto;
    }

    .services-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .tech-logos {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--color-white);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md) 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: var(--spacing-lg) 0;
        min-height: auto;
    }

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

    .btn {
        width: 100%;
    }

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

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .tech-logos {
        grid-template-columns: 1fr;
    }
}