/**
 * Nexuraplant Landing Page
 * Modern, Professional Design for Hotel IT Documentation
 */

/* =====================================================
   CSS VARIABLES
   ===================================================== */
:root {
    /* Colors - Helles, professionelles Grau */
    --color-bg: #f5f7fa;
    --color-bg-elevated: #ffffff;
    --color-bg-card: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #cbd5e1;
    
    --color-text: #1e293b;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    
    --color-accent: #10b981;
    --color-accent-glow: rgba(16, 185, 129, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    
    /* Typography */
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --container-max: 1200px;
    --section-padding: 120px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* =====================================================
   CONTAINER
   ===================================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* =====================================================
   NAVIGATION
   ===================================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-mark {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

.nav-cta {
    background: var(--color-primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition-base);
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
    border-radius: 2px;
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: var(--gradient-glow);
    filter: blur(80px);
}

.hero-content {
    position: relative;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: clamp(1.7rem, 5vw, 3.2rem);
    font-weight: 600;

}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border-light);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Dashboard Preview */
.hero-visual {
    display: none; /* Hide on mobile, show on desktop */
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
}

.dashboard-preview {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.12);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border-light);
}

.preview-dots span:first-child { background: #ef4444; }
.preview-dots span:nth-child(2) { background: #f59e0b; }
.preview-dots span:last-child { background: #22c55e; }

.preview-title {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.preview-content {
    display: flex;
    padding: 16px;
    gap: 16px;
    min-height: 300px;
}

.preview-sidebar {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100px;
}

.preview-nav-item {
    height: 12px;
    background: var(--color-border);
    border-radius: 4px;
}

.preview-nav-item.active {
    background: var(--color-primary);
}

.preview-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.preview-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    height: 60px;
}

.preview-card.wide {
    flex: 1;
}

/* =====================================================
   FEATURES SECTION
   ===================================================== */
.features {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-primary-light);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-tag.light {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    position: relative;
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.12);
}

.feature-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
}

.feature-card.featured:hover {
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.2);
}

.feature-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.feature-icon {
    width: 52px;
    height: 52px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--color-primary-light);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* =====================================================
   BENEFITS SECTION
   ===================================================== */
.benefits {
    padding: var(--section-padding) 0;
}

.benefits .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.benefits-content h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: -0.02em;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.benefit-item {
    display: flex;
    gap: 16px;
}

.benefit-check {
    width: 32px;
    height: 32px;
    background: var(--color-accent-glow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-accent);
}

.benefit-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.benefit-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.benefits-visual {
    display: flex;
    justify-content: center;
}

.visual-card {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

.visual-icon {
    color: var(--color-primary);
}

.visual-label {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* =====================================================
   CONTACT SECTION
   ===================================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
}

.contact-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
}

.contact-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.contact-content > p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-primary-light);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-size: 1rem;
    color: var(--color-text);
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    background: var(--color-bg-elevated);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--color-border);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .nav-logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 10px;
    transition: var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-text);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1024px) {
    .benefits .container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .benefits-visual {
        order: -1;
    }
    
    .contact-card {
        grid-template-columns: 1fr;
        padding: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-bg-elevated);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 24px;
        transition: var(--transition-base);
        border-left: 1px solid var(--color-border);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-cta {
        width: 100%;
        text-align: center;
    }
    
    .nav-toggle {
        display: flex;
        position: relative;
        z-index: 1001;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
    
    .contact-card {
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.95rem;
    }
    
    .feature-card {
        padding: 24px;
    }
}

/* =====================================================
   HIGHLIGHT SECTION (QR-Code Feature)
   ===================================================== */
.highlight-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.highlight-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.highlight-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 16px 0 24px;
}

.highlight-text {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

.highlight-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--color-text);
    font-size: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

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

.highlight-list svg {
    color: #16a34a;
    flex-shrink: 0;
}

/* Phone Mockup */
.highlight-visual {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    background: #1f2937;
    border-radius: 40px;
    padding: 12px;
    width: 300px;
    box-shadow: 0 25px 80px -20px rgba(0, 0, 0, 0.4);
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: #1f2937;
    border-radius: 0 0 16px 16px;
    z-index: 10;
}

.phone-screen {
    background: white;
    border-radius: 32px;
    padding: 48px 24px 32px;
    min-height: 480px;
}

.phone-header {
    font-weight: 600;
    font-size: 1.25rem;
    color: #1f2937;
    text-align: center;
    margin-bottom: 24px;
}

.phone-device-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #f3f4f6;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    color: #4b5563;
    margin-bottom: 24px;
}

.phone-device-badge svg {
    color: #6b7280;
}

.phone-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.phone-form label {
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
}

.phone-textarea {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    color: #374151;
    min-height: 100px;
    line-height: 1.5;
}

.phone-button {
    background: var(--color-primary);
    color: white;
    padding: 16px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    margin-top: 8px;
}

/* =====================================================
   BENEFITS SECTION (neu als Cards)
   ===================================================== */
.benefits {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.benefits .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.benefits .section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-top: 16px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #dbeafe 0%, #ede9fe 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.benefit-icon svg {
    color: var(--color-primary);
}

.benefit-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* =====================================================
   RESPONSIVE - HIGHLIGHT & BENEFITS
   ===================================================== */
@media (max-width: 1024px) {
    .highlight-grid {
        gap: 48px;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .highlight-section {
        padding: 60px 0;
    }
    
    .highlight-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .highlight-visual {
        order: -1;
    }
    
    .highlight-content h2 {
        font-size: 2rem;
    }
    
    .phone-mockup {
        width: 260px;
    }
    
    .phone-screen {
        min-height: 400px;
        padding: 40px 20px 24px;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}