/* === AI-Content Detector ML - Sections === */
/* Version: 3.1 ML */

/* ===== HERO SECTION ===== */
.hero {
    padding: 80px 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(139,92,246,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 24px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
    line-height: 1.2;
}

.stat-label {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== FEATURES GRID ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1;
}

.feature-title {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
}

/* ===== DEMO SECTION ===== */
.demo-container {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.demo-tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.demo-tab {
    padding: 16px 32px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    background: transparent;
    border: none;
    font-size: 1rem;
}

.demo-tab:hover {
    color: var(--accent-primary);
    background: var(--bg-card);
}

.demo-tab.active {
    background: var(--bg-card);
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.demo-content {
    padding: 32px;
}

.demo-textarea {
    width: 100%;
    min-height: 200px;
    padding: 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    margin-bottom: 24px;
    transition: var(--transition);
}

.demo-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.demo-controls {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.demo-result {
    padding: 24px;
    border-radius: var(--border-radius-sm);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.demo-result-badge {
    padding: 8px 20px;
    border-radius: 40px;
    font-weight: 600;
    display: inline-block;
}

.result-human {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid #10b981;
}

.result-ai {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid #ef4444;
}

.demo-confidence {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.confidence-bar {
    width: 200px;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

/* ===== FAQ SECTION - Verbessert ohne Springen ===== */
.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
    overflow: hidden;
    transition: border-color 0.2s ease; /* Nur border-color animieren */
    width: 100%;
    box-sizing: border-box;
}

.faq-item:hover {
    border-color: var(--accent-primary);
}

.faq-question {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: background-color 0.2s ease;
    user-select: none;
    width: 100%;
    box-sizing: border-box;
    min-height: 70px; /* Feste Mindesthöhe */
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-question .icon {
    transition: transform 0.3s ease;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-question.active .icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 24px 20px 24px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: none;
    width: 100%;
    box-sizing: border-box;
    border-top: 1px solid transparent;
}

.faq-answer.show {
    display: block;
    animation: fadeIn 0.3s ease;
    border-top-color: var(--border-color);
}

/* ===== TECH GRID ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.tech-item {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.tech-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

.tech-label {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-primary);
}

/* Animationen */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Anpassungen */
@media (max-width: 768px) {
    .faq-grid {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .faq-question {
        padding: 16px 20px;
        min-height: 60px;
    }
    
    .faq-answer {
        padding: 0 20px 16px 20px;
    }
}