/* Four Bytes Homepage - Tech/Developer Style */

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    --accent-orange: #ff6701;
    --accent-orange-dim: #e65100;
    --accent-green: #3fb950;
    --accent-yellow: #d29922;
    --accent-red: #f85149;
    --border-color: #30363d;
    --code-bg: #0d1117;
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Grid Background */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(48, 54, 61, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(48, 54, 61, 0.3) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
    transition: opacity 0.3s;
}

.logo:hover img {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-orange);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
}

/* Terminal Window */
.terminal-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 100%;
    max-width: 700px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: var(--accent-red); }
.dot.yellow { background: var(--accent-yellow); }
.dot.green { background: var(--accent-green); }

.terminal-title {
    margin-left: 8px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.prompt {
    color: var(--accent-green);
    font-weight: bold;
}

.command {
    color: var(--text-primary);
}

.terminal-output {
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding-left: 24px;
}

.output-text {
    color: var(--accent-orange);
    font-weight: 500;
}

.terminal-output p {
    margin: 4px 0;
}

.cursor {
    color: var(--accent-orange);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Services Section */
.services {
    padding: 100px 0;
}

h2 {
    font-size: 2rem;
    margin-bottom: 3rem;
    font-family: var(--font-mono);
}

.code-comment {
    color: var(--text-muted);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    transition: transform 0.3s, border-color 0.3s;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-orange);
}

.service-icon {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--accent-orange);
    margin-bottom: 16px;
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.tech-tag {
    display: inline-block;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    margin-right: 8px;
    margin-bottom: 8px;
}

/* Tech Stack Section */
.tech-stack {
    padding: 100px 0;
}

.stack-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
}

.stack-category {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
}

.stack-category h4 {
    color: var(--accent-orange);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stack-category ul {
    list-style: none;
}

.stack-category li {
    color: var(--text-secondary);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.stack-category li:last-child {
    border-bottom: none;
}

.stack-category li::before {
    content: ">";
    color: var(--text-muted);
    margin-right: 12px;
    font-family: var(--font-mono);
}

/* Contact Section */
.contact {
    padding: 100px 0;
}

.contact-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 40px;
    max-width: 600px;
}

.contact-info {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    margin-bottom: 32px;
}

.contact-info p {
    margin: 12px 0;
}

.label {
    color: var(--accent-orange);
}

.string {
    color: var(--accent-green);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--accent-orange);
    color: var(--bg-primary);
    padding: 14px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-family: var(--font-mono);
    transition: background 0.3s, transform 0.3s;
}

.cta-button:hover {
    background: var(--accent-orange-dim);
    transform: translateX(4px);
}

.arrow {
    transition: transform 0.3s;
}

.cta-button:hover .arrow {
    transform: translateX(4px);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Impressum Page */
.impressum {
    padding: 120px 0 60px;
    min-height: calc(100vh - 200px);
}

.impressum h1 {
    font-size: 2rem;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
}

.impressum-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 40px;
    max-width: 700px;
}

.impressum-card h3 {
    color: var(--accent-orange);
    font-size: 1rem;
    margin: 24px 0 12px;
    font-family: var(--font-mono);
}

.impressum-card h3:first-child {
    margin-top: 0;
}

.impressum-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.impressum-card a {
    color: var(--accent-orange);
    text-decoration: none;
}

.impressum-card a:hover {
    text-decoration: underline;
}

.back-link {
    margin-top: 2rem;
}

.back-link a {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-mono);
    transition: color 0.3s;
}

.back-link a:hover {
    color: var(--accent-orange);
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.85rem;
    }

    main {
        padding: 0 1rem;
    }

    .terminal-window {
        margin: 0 -1rem;
        border-radius: 0;
    }

    h2 {
        font-size: 1.5rem;
    }

    .contact-card {
        padding: 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}