@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url('assets/fonts/Inter-Light.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('assets/fonts/Inter-Regular.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('assets/fonts/Inter-SemiBold.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 800;
    font-display: swap;
    src: url('assets/fonts/Inter-ExtraBold.ttf') format('truetype');
}

:root {
    --bg-color: #050510;
    --text-color: #ffffff;
    --primary-color: #6c5ce7;
    --secondary-color: #00cec9;
    --accent-color: #fd79a8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 10s infinite ease-in-out;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-color);
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(30px, 50px);
    }
}

/* Navigation */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(5, 5, 16, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 2px;
}

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

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

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

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

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 1rem;
}

.hero-content h1 {
    font-size: 5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
    letter-spacing: -2px;
}

.gradient-text {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.8);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.4);
}

/* Models Section */
.models-section,
.explained-section,
.future-section {
    padding: 8rem 5%;
}

h2 {
    font-size: 3rem;
    margin-bottom: 4rem;
    text-align: center;
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 20px;
    backdrop-filter: blur(5px);
    transition: transform 0.3s, background 0.3s;
}

.glass-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.08);
}

.glass-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.glass-card p {
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.7);
}

.tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.tag {
    padding: 0.3rem 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Transformers Section */
.transformers-section {
    padding: 8rem 5%;
}

.tabs-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
    overflow: hidden;
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--glass-border);
}

.tab-btn {
    flex: 1;
    padding: 1.5rem;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    font-family: var(--font-main);
}

.tab-btn:hover {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--secondary-color);
    background: rgba(255, 255, 255, 0.08);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--secondary-color);
    box-shadow: 0 -5px 10px rgba(0, 206, 201, 0.3);
}

.tabs-content {
    padding: 2.5rem;
    min-height: 300px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.tab-pane.active {
    display: block;
}

.tab-pane h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.tab-pane p {
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

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

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

/* Explained Section */
.explanation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.info-box {
    padding: 2rem;
    border-left: 3px solid var(--accent-color);
    background: linear-gradient(90deg, rgba(253, 121, 168, 0.05), transparent);
}

.info-box h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Future Section */
.future-section {
    text-align: center;
}

.future-text {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

.keywords-cloud {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.keywords-cloud span {
    font-size: 1.2rem;
    color: var(--glass-border);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    transition: all 0.3s;
}

.keywords-cloud span:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 15px var(--primary-color);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--glass-border);
    color: rgba(255, 255, 255, 0.5);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-left.visible,
.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* KI-Alltag page helpers */
.sub-hero {
    min-height: 70vh;
    padding-top: 10rem;
}

.hero-content.narrow {
    max-width: 900px;
    margin: 0 auto;
}

.section-intro {
    max-width: 900px;
    margin: 0 auto 3rem auto;
    text-align: center;
    color: rgba(255, 255, 255, 0.75);
}

.list-compact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-compact li {
    position: relative;
    padding-left: 1.3rem;
    margin-bottom: 0.75rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.6;
}

.list-compact li::before {
    content: '•';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--secondary-color);
}

.section-label {
    display: inline-block;
    margin-bottom: 0.5rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 3rem;
    }

    .nav-links {
        display: none;
        /* Simple hide for mobile for now, can be improved */
    }

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