/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Newsreader:ital,opsz,wght@1,6..72,400;1,6..72,500&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-dark: #0d0e11;
    --bg-card: #15171c;
    --border-color: #22252d;
    --border-hover: #2e333e;

    /* Neon-Hellgrün Akzentfarbe */
    --accent-green: #4ade80;
    --accent-green-dim: rgba(74, 222, 128, 0.1);

    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
}

/* KI-Netzwerk-Hintergrund (scrollt mit der Seite mit) */
body::before {
    content: '';
    position: absolute;
    /* Ändert das Verhalten von 'feststehend' zu 'mitscrollend' */
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    /* Blendet sich perfekt über die Hero-Sektion ein */
    background-image: url('../assets/hero-portraitnb.png');
    background-size: cover;
    background-position: center right;
    background-repeat: no-repeat;
    opacity: 0.35;
    z-index: -1;
    pointer-events: none;
}

/* Selection Highlight */
::selection {
    background: var(--accent-green);
    color: #000000;
}

/* Utility Fonts */
.font-serif {
    font-family: 'Newsreader', serif;
    font-style: italic;
    color: #ffffff;
}

.font-mono {
    font-family: 'JetBrains Mono', monospace;
}

/* Header & Navigation */
.header-nav {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(13, 14, 17, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
}

.nav-container {
    max-width: 1152px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    gap: 1.75rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Main Container */
main {
    max-width: 1152px;
    margin: 0 auto;
    padding: 8rem 1.5rem 6rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

/* Hero Section Layout */
.hero-section {
    max-width: 1152px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 42rem;
    /* Hält den Text auf der linken Seite */
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    align-self: flex-start;
    padding: 0.25rem 0.75rem;
    background-color: var(--accent-green-dim);
    border: 1px solid rgba(74, 222, 128, 0.3);
    border-radius: 9999px;
    color: var(--accent-green);
    font-size: 0.75rem;
    font-weight: 500;
}

.status-dot {
    width: 0.375rem;
    height: 0.375rem;
    background-color: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-green);
}

.hero-title {
    font-size: 3rem;
    line-height: 1.15;
    color: #ffffff;
    font-weight: 400;
    letter-spacing: -0.02em;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: 4rem;
    }
}

.hero-bio {
    font-size: 1.0625rem;
    color: var(--text-muted);
    font-weight: 300;
    line-height: 1.7;
}

.hero-bio strong {
    color: var(--accent-green);
    font-weight: 500;
}

/* Primary Button */
.btn-primary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-green);
    color: #000000;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.4);
    transform: translateY(-2px);
}

/* Sections Base Style */
.section-header {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.75rem;
    color: #ffffff;
    font-weight: 500;
    letter-spacing: -0.02em;
}

/* Cards Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

@media (min-width: 640px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* Custom Cards mit weißem Rahmen */
.card {
    background-color: var(--bg-card);
    border: 2px solid #ffffff;
    border-radius: 0.5rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    border-width: 4px;
    border-color: var(--accent-green);
    padding: calc(1.5rem - 2px);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px -5px rgba(74, 222, 128, 0.15);
}

.card-tag {
    font-size: 0.75rem;
    color: var(--accent-green);
    letter-spacing: 0.05em;
    font-weight: 500;
}

.card-title {
    font-size: 1.125rem;
    color: #ffffff;
    font-weight: 500;
}

.card-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 300;
    line-height: 1.6;
}

.card-desc strong {
    color: #ffffff;
    font-weight: 500;
}

.card-footer {
    margin-top: auto;
    padding-top: 1rem;
    font-size: 0.75rem;
    color: var(--text-dim);
    display: flex;
    gap: 0.75rem;
}

.card:hover .card-footer span {
    color: var(--accent-green);
}

.card-subtle {
    border: 1px solid var(--border-color);
}

.card-subtle:hover {
    border-width: 2px;
    border-color: var(--accent-green);
    padding: calc(1.5rem - 1px);
}

/* INTERAKTIVE TOGGLE-BUTTONS */
.toggle-section {
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2.5rem;
}

.toggle-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    width: 100%;
}

@media (min-width: 640px) {
    .toggle-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Vollständiges Aushebeln von Browser-Standards für Buttons */
button.toggle-btn {
    all: unset;
    box-sizing: border-box;
    background-color: var(--bg-card);
    border: 2px solid #ffffff;
    border-radius: 0.5rem;
    padding: 1.5rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    width: 100%;
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
}

button.toggle-btn span.font-mono {
    font-size: 0.75rem;
    color: var(--accent-green);
}

button.toggle-btn .toggle-title {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 600;
    display: block;
}

button.toggle-btn .toggle-desc {
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 300;
    display: block;
}

button.toggle-btn:hover {
    border-width: 4px;
    border-color: var(--accent-green);
    padding: calc(1.5rem - 2px);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(74, 222, 128, 0.2);
}

button.toggle-btn.active {
    border-color: var(--accent-green);
    background-color: rgba(74, 222, 128, 0.08);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.15);
}

/* Inhaltsbereiche */
.toggle-content {
    margin-top: 2rem;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* CV Download Box */
.cv-download-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border: 2px dashed var(--accent-green);
    background-color: rgba(74, 222, 128, 0.03);
    border-radius: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Formular Styling */
.form-container {
    max-width: 36rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-card);
    border: 2px solid #ffffff;
    border-radius: 0.375rem;
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-width: 3px;
    border-color: var(--accent-green);
    box-shadow: 0 0 10px rgba(74, 222, 128, 0.2);
}

/* Footer & Legal */
footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 1.5rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-dim);
}

footer a {
    color: var(--text-dim);
    text-decoration: underline;
}

footer a:hover {
    color: var(--accent-green);
}

.impressum-container {
    max-width: 1152px;
    margin: 0 auto;
    padding: 2rem 1.5rem 5rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.75rem;
    color: var(--text-dim);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.impressum-container h3 {
    color: var(--accent-green);
}