/**
 * CSS Sections - Seitenstruktur
 * 
 * - Header & Navigation
 * - Hero Section
 * - Tool Section
 * - Features Section
 * - Use Cases Section
 * - Tips Section
 * - FAQ Section
 * - CTA Section
 * - Footer
 */

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: #2d2d2d !important;
    border-bottom: 1px solid #3d3d3d !important;
    transition: all var(--transition-normal);
}

/* Header bleibt immer dunkel - auch im Light Mode */
[data-theme="light"] .header,
[data-theme="dark"] .header {
    background: #2d2d2d !important;
    border-bottom-color: #3d3d3d !important;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    background: #2d2d2d !important;
}

/* Header-Container bleibt immer dunkel */
[data-theme="light"] .header-container,
[data-theme="dark"] .header-container {
    background: #2d2d2d !important;
}

.logo {
    display: flex;
    align-items: center;
    height: var(--header-height);
    padding: 5px 0;
}

.logo-img {
    height: 52px !important;
    width: auto !important;
    max-width: 280px !important;
    object-fit: contain !important;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

.nav {
    display: none;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav a {
    color: #ffffff;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    background: #3d3d3d;
    border: 1px solid #4d4d4d;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: #4d4d4d;
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke: #ffffff;
}

.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }

[data-theme="dark"] .theme-toggle .sun-icon { display: block; }
[data-theme="dark"] .theme-toggle .moon-icon { display: none; }

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    background: #3d3d3d;
    border: 1px solid #4d4d4d;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn:hover {
    background: #4d4d4d;
}

.mobile-menu-btn svg {
    width: 20px;
    height: 20px;
    stroke: #ffffff;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #2d2d2d;
    border-bottom: 1px solid #3d3d3d;
    padding: var(--space-md);
    display: none;
    z-index: calc(var(--z-fixed) - 1);
    box-shadow: var(--shadow-md);
}

.mobile-nav.active {
    display: block;
}

.mobile-nav a {
    display: block;
    padding: var(--space-md);
    color: #ffffff;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.mobile-nav a:hover {
    background: #3d3d3d;
    color: var(--primary);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    padding-top: calc(var(--header-height) + var(--space-2xl));
    padding-bottom: var(--space-2xl);
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.hero-badge span {
    color: var(--success);
    font-weight: var(--font-weight-semibold);
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: var(--line-height-relaxed);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

/* Trust Indicators */
.trust-indicators {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: var(--font-size-base);
}

.trust-item svg {
    width: 20px;
    height: 20px;
    stroke: var(--success);
}

/* ========================================
   TOOL SECTION
   ======================================== */
.tool-section {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.tool-wrapper {
    display: grid;
    gap: var(--space-xl);
}

@media (min-width: 1024px) {
    .tool-wrapper {
        grid-template-columns: 1.5fr 1fr;
    }
}

#textInput {
    min-height: 400px;
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features-section {
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: var(--space-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-tertiary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-lg);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
}

/* ========================================
   USE CASES SECTION
   ======================================== */
.usecases-section {
    background: var(--bg-secondary);
}

.usecases-grid {
    display: grid;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .usecases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.usecase-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    text-align: center;
}

.usecase-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-hero);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin: 0 auto var(--space-md);
}

.usecase-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.usecase-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* ========================================
   TIPS SECTION
   ======================================== */
.tips-section {
    background: var(--bg-primary);
}

.tips-grid {
    display: grid;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.tip-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.tip-header {
    background: var(--gradient-hero);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.tip-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
}

.tip-header h3 {
    font-size: var(--font-size-lg);
}

.tip-content {
    padding: var(--space-lg);
}

.tip-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-light);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.tip-list li:last-child {
    border-bottom: none;
}

.tip-list li::before {
    content: '✓';
    color: var(--success);
    font-weight: var(--font-weight-semibold);
    flex-shrink: 0;
}

.tip-list strong {
    color: var(--text-primary);
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq-section {
    background: var(--bg-secondary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-bottom: var(--space-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

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

.faq-question svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-muted);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
    margin-left: var(--space-md);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) var(--ease-out);
}

.faq-answer-content {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    background: var(--gradient-primary);
    padding: var(--space-3xl) 0;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--text-inverse);
    margin-bottom: var(--space-md);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
}

.cta-content .btn {
    background: var(--bg-primary);
    color: var(--primary);
}

.cta-content .btn:hover {
    background: var(--bg-secondary);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: #2d2d2d !important;
    border-top: 1px solid #3d3d3d !important;
    padding: var(--space-2xl) 0;
}

/* Footer bleibt immer dunkel - auch im Light Mode */
[data-theme="light"] .footer,
[data-theme="dark"] .footer {
    background: #2d2d2d !important;
    border-top-color: #3d3d3d !important;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
    background: #2d2d2d !important;
}

/* Footer-Content bleibt immer dunkel */
[data-theme="light"] .footer-content,
[data-theme="dark"] .footer-content {
    background: #2d2d2d !important;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
}

.footer-logo-img {
    width: 400px !important;
    height: auto !important;
    max-height: 90px !important;
    object-fit: contain !important;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
}

.footer-links a {
    color: #ffffff;
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid #3d3d3d !important;
    text-align: center;
    background: #2d2d2d !important;
}

/* Footer-Bottom bleibt immer dunkel */
[data-theme="light"] .footer-bottom,
[data-theme="dark"] .footer-bottom {
    background: #2d2d2d !important;
    border-top-color: #3d3d3d !important;
}

.footer-bottom p {
    color: #aaaaaa !important;
}

.footer-bottom a {
    color: var(--primary);
}