@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css");
@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&display=swap");

/* === CSS Variables === */
:root {
    --bg: #0a0a0a;
    --bg-card: rgba(10, 10, 10, 0.85);
    --green: #00ff41;
    --green-dim: #00cc33;
    --cyan: #00d4ff;
    --text: #c9d1d9;
    --text-dim: #6e7681;
    --border: #1a1a2e;
    --border-hover: #00ff41;
    --red: #ff5f56;
    --yellow: #ffbd2e;
    --green-dot: #27c93f;
    --font: 'JetBrains Mono', monospace;
    --radius: 8px;
}

/* === Reset === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100%;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--cyan);
    text-decoration: none;
    transition: color 0.2s, text-shadow 0.2s;
}

a:hover {
    color: var(--green);
    text-shadow: 0 0 8px rgba(0, 255, 65, 0.4);
}

ul, ol {
    list-style: none;
}

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

/* === Canvas Background === */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* === CRT Scanline Overlay === */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.08) 2px,
        rgba(0, 0, 0, 0.08) 4px
    );
}

/* === Content Layer === */
.content-layer {
    position: relative;
    z-index: 2;
    pointer-events: none;
}

.content-layer a,
.content-layer button,
.content-layer input,
.content-layer .nav,
.content-layer .terminal-window,
.content-layer .site-footer {
    pointer-events: auto;
}

/* === Navigation === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.nav.visible {
    transform: translateY(0);
}

.nav-logo {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--green);
    letter-spacing: 0.05em;
}

.nav-logo .prompt {
    color: var(--text-dim);
}

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

.nav-links a {
    color: var(--text-dim);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--green);
    text-shadow: none;
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.terminal-window {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(16px);
    max-width: 600px;
    width: 100%;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal-titlebar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(30, 30, 30, 0.8);
    border-bottom: 1px solid var(--border);
}

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

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

.terminal-title {
    flex: 1;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

.terminal-body {
    padding: 2rem;
    text-align: center;
}

/* === Avatar === */
.avatar {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    overflow: hidden;
    border: 2px solid var(--green);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.2);
    transition: box-shadow 0.3s;
}

.avatar:hover {
    box-shadow: 0 0 30px rgba(0, 255, 65, 0.4);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* === Typed Text === */
.typed-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.25rem;
    min-height: 2.4rem;
}

.typed-title {
    font-size: 1rem;
    color: var(--green);
    margin-bottom: 1.5rem;
    min-height: 1.6rem;
}

.cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--green);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
}

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

/* === Social Links === */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 1.1rem;
    transition: all 0.3s;
}

.social-link:hover {
    border-color: var(--green);
    color: var(--green);
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.25);
    text-shadow: none;
}

/* === Command Prompt Divider === */
.prompt-divider {
    color: var(--text-dim);
    font-size: 0.8rem;
    text-align: left;
    padding: 1rem 0;
}

.prompt-divider .cmd {
    color: var(--green);
}

/* === Section Headers === */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.5rem;
}

.section-header .prompt-line {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.section-header .prompt-line .cmd {
    color: var(--green);
}

/* === Projects Section === */
.projects {
    padding: 4rem 2rem 6rem;
    max-width: 1100px;
    margin: 0 auto;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* === Project Card === */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(12px);
    overflow: hidden;
    transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
    transition: border-color 0.3s, box-shadow 0.3s, transform 0.6s ease-out, opacity 0.6s ease-out;
}

.project-card:hover {
    border-color: var(--green);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.1);
    transform: translateY(-3px);
}

.project-card .terminal-titlebar {
    padding: 10px 14px;
}

.project-card .terminal-dot {
    width: 10px;
    height: 10px;
}

.project-card .terminal-title {
    font-size: 0.7rem;
}

.project-body {
    padding: 1.5rem;
}

.project-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.5rem;
}

.project-name .arrow {
    color: var(--green);
    margin-right: 0.5rem;
}

.project-desc {
    font-size: 0.85rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    background: rgba(0, 255, 65, 0.08);
    color: var(--green-dim);
    border: 1px solid rgba(0, 255, 65, 0.15);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--cyan);
    transition: color 0.2s;
}

.project-link:hover {
    color: var(--green);
    text-shadow: none;
}

/* === Footer === */
.site-footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(12px);
    position: relative;
    z-index: 2;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    font-size: 0.8rem;
}

.footer-links a {
    color: var(--text-dim);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--green);
    text-shadow: none;
}

.footer-sep {
    color: var(--border);
}

/* === Background Switcher === */
.bg-toggle {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 99;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem 0.8rem;
    color: var(--text-dim);
    font-family: var(--font);
    font-size: 0.7rem;
    cursor: pointer;
    backdrop-filter: blur(12px);
    transition: border-color 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.bg-toggle:hover {
    border-color: var(--green);
    color: var(--green);
}

.bg-toggle kbd {
    display: inline-block;
    padding: 0.1rem 0.35rem;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 0.65rem;
    font-family: var(--font);
    color: inherit;
    background: rgba(255, 255, 255, 0.05);
}

/* === Hide dat.gui === */
.dg {
    display: none !important;
}

/* === Impressum Page === */
body.is-impressum {
    background: var(--bg);
}

body.is-impressum .impressum-wrapper {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
}

body.is-impressum .terminal-window {
    max-width: 100%;
    margin-top: 2rem;
}

body.is-impressum .terminal-body {
    text-align: left;
    font-size: 0.85rem;
    line-height: 1.8;
    text-transform: none;
    letter-spacing: normal;
}

body.is-impressum h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--green);
    margin: 2rem 0 1rem;
}

body.is-impressum h1:first-child {
    margin-top: 0;
}

body.is-impressum h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin: 1.5rem 0 0.75rem;
}

body.is-impressum h3 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--cyan);
    margin: 1.25rem 0 0.5rem;
}

body.is-impressum h4 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    margin: 1rem 0 0.5rem;
}

body.is-impressum p {
    margin-bottom: 0.75rem;
    color: var(--text);
}

body.is-impressum ul {
    margin: 0.5rem 0 0.75rem 1.5rem;
    list-style: disc;
}

body.is-impressum ul li {
    margin-bottom: 0.25rem;
    color: var(--text);
    font-size: 0.85rem;
}

body.is-impressum a {
    color: var(--cyan);
}

body.is-impressum a:hover {
    color: var(--green);
}

body.is-impressum .footer-back {
    text-align: center;
    padding: 2rem 0;
}

body.is-impressum .footer-back a {
    color: var(--text-dim);
    font-size: 0.8rem;
}

body.is-impressum .footer-back a:hover {
    color: var(--green);
}

/* === Responsive === */
@media (max-width: 768px) {
    .hero {
        padding: 1.5rem 1rem;
    }

    .terminal-body {
        padding: 1.5rem;
    }

    .typed-name {
        font-size: 1.4rem;
    }

    .typed-title {
        font-size: 0.9rem;
    }

    .projects {
        padding: 3rem 1rem 4rem;
    }

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

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.7rem;
    }

    body.is-impressum .impressum-wrapper {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .typed-name {
        font-size: 1.2rem;
    }

    .social-links {
        gap: 0.75rem;
    }

    .social-link {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .nav {
        padding: 0.75rem 1rem;
    }

    .bg-toggle {
        bottom: 1rem;
        right: 1rem;
    }
}