/* =========================================
   VARIABLEN & GRUNDEINSTELLUNGEN
   ========================================= */
:root {
    /* Farben */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #10b981;
    --color-accent: #f59e0b;

    --color-dark: #0f172a;
    --color-dark-light: #1e293b;
    --color-gray-900: #111827;
    --color-gray-800: #1f2937;
    --color-gray-700: #374151;
    --color-gray-600: #4b5563;
    --color-gray-500: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-300: #d1d5db;
    --color-gray-200: #e5e7eb;
    --color-gray-100: #f3f4f6;
    --color-white: #ffffff;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-dark: linear-gradient(180deg, var(--color-dark) 0%, var(--color-dark-light) 100%);

    /* Schatten */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Typografie */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Abstände */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: 1rem;
}

/* =========================================
   UTILITIES
   ========================================= */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Animationen */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.animate-fade-in-up:nth-child(2) { animation-delay: 0.1s; }
.animate-fade-in-up:nth-child(3) { animation-delay: 0.2s; }
.animate-fade-in-up:nth-child(4) { animation-delay: 0.3s; }

@keyframes fadeIn {
    to { opacity: 1; }
}

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

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateX(-20px);
    }
    to { 
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll-Animationen */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md), 0 0 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-gray-200);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-xs {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

.btn-full {
    width: 100%;
}

/* =========================================
   NAVIGATION
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm) 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    transition: color var(--transition-fast);
}

.navbar.scrolled .nav-logo {
    color: var(--color-dark);
}

.nav-logo i {
    color: var(--color-primary-light);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    transition: color var(--transition-fast);
    position: relative;
}

.navbar.scrolled .nav-link {
    color: var(--color-gray-600);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--color-white);
}

.navbar.scrolled .nav-link:hover {
    color: var(--color-primary);
}

.nav-cta {
    background: var(--gradient-primary);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    color: var(--color-white) !important;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: scale(1.05);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    position: relative;
    transition: all var(--transition-base);
}

.navbar.scrolled .hamburger {
    background: var(--color-dark);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: inherit;
    transition: all var(--transition-base);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
    background: var(--color-dark);
}

.nav-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
    background: var(--color-dark);
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4xl) var(--container-padding);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-dark);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.3), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(16, 185, 129, 0.15), transparent);
    z-index: 1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-gray-300);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xl);
}

.hero-badge i {
    color: var(--color-accent);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-400);
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-white);
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-light);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray-400);
    margin-top: var(--spacing-xs);
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-white);
    transition: all var(--transition-base);
}

.hero-scroll a:hover {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* =========================================
   SECTIONS GEMEINSAM
   ========================================= */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-500);
}

/* =========================================
   PORTFOLIO SECTION
   ========================================= */
.portfolio {
    background: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

/* NEU: Portfolio Filter */
.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    cursor: pointer;
}

.filter-btn:hover {
    background: var(--color-gray-200);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--color-white);
    border-color: transparent;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* NEU: Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.portfolio-card {
    position: relative;
    height: 350px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.portfolio-card.hidden {
    display: none;
    opacity: 0;
}

.portfolio-card.show {
    animation: fadeIn 0.5s ease forwards;
}

.card-image {
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.card-icon-bg {
    font-size: 4rem;
    color: var(--color-primary-light);
    opacity: 0.8;
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-base);
}

.portfolio-card:hover .card-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-2xl);
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.portfolio-card:hover .overlay-content {
    transform: translateY(0);
}

.overlay-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.overlay-content p {
    font-size: 0.95rem;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-lg);
}

/* =========================================
   BRANCHEN SECTION
   ========================================= */
.branchen {
    background: var(--color-gray-100);
}

.branchen-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-xl);
}

.branche-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.branche-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.branche-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.branche-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.card-icon i {
    font-size: 1.75rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-content {
    flex: 1;
}

.card-content h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.card-content p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-md);
}

.card-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.card-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.card-features i {
    color: var(--color-secondary);
    font-size: 0.75rem;
}

.card-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    font-weight: 600;
    color: var(--color-primary);
    transition: gap var(--transition-base);
}

.card-link:hover {
    gap: var(--spacing-md);
}

/* =========================================
   FEATURES SECTION
   ========================================= */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-item:hover {
    background: var(--color-gray-100);
}

.feature-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-item:hover .feature-icon {
    background: var(--gradient-primary);
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-base);
}

.feature-item:hover .feature-icon i {
    -webkit-text-fill-color: var(--color-white);
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.feature-item p {
    color: var(--color-gray-500);
}

/* =========================================
   MODALS
   ========================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1998;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.modal:not(.active) .modal-content {
    animation: modalSlideOut 0.3s ease forwards;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes modalSlideOut {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(50px);
        opacity: 0;
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    color: var(--color-dark);
    font-size: 1.25rem;
    transition: all var(--transition-base);
    z-index: 10;
}

.modal-close:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: rotate(90deg);
}

.modal-header {
    padding: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.modal-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: var(--radius-xl);
    font-size: 2.5rem;
    color: var(--color-primary);
}

.modal-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-dark);
}

/* NEU: Modal Tabs */
.modal-tabs {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--color-gray-200);
    overflow-x: auto;
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    color: var(--color-gray-500);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    white-space: nowrap;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.tab-btn:hover {
    color: var(--color-dark);
}

.tab-btn.active {
    color: var(--color-primary);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.modal-body {
    padding: var(--spacing-2xl);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* NEU: Feature Blocks in Modals */
.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.feature-block {
    padding: var(--spacing-lg);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-block:hover {
    background: var(--gradient-primary);
    color: var(--color-white);
    transform: translateY(-5px);
}

.feature-block i {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    display: block;
    color: var(--color-primary);
}

.feature-block:hover i {
    color: var(--color-white);
}

.feature-block h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.feature-block:hover h4 {
    color: var(--color-white);
}

.feature-block p {
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.feature-block:hover p {
    color: rgba(255, 255, 255, 0.9);
}

/* NEU: Demo Container */
.demo-container {
    padding: var(--spacing-xl);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
}

.demo-preview {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.demo-table {
    overflow-x: auto;
}

.demo-table table {
    width: 100%;
    border-collapse: collapse;
}

.demo-table thead {
    background: var(--color-gray-100);
}

.demo-table th,
.demo-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
    font-size: 0.9rem;
}

.demo-table th {
    font-weight: 700;
    color: var(--color-dark);
}

.demo-table td {
    color: var(--color-gray-600);
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.active {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.1));
    color: var(--color-secondary);
}

/* Demo Calendar */
.demo-calendar {
    margin-bottom: var(--spacing-lg);
}

.calendar-header {
    text-align: center;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-sm);
}

.calendar-day {
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-gray-500);
    padding: var(--spacing-sm);
}

.calendar-slot {
    padding: var(--spacing-md);
    text-align: center;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.calendar-slot.available {
    background: var(--color-gray-200);
    color: var(--color-dark);
}

.calendar-slot.available:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.calendar-slot.booked {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.appointment-info {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.appointment-info h4 {
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.appointment-info p {
    color: var(--color-gray-600);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

/* Demo Property */
.property-overview {
    margin-bottom: var(--spacing-lg);
}

.property-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.property-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.property-header h4 {
    color: var(--color-dark);
    font-weight: 700;
}

.property-badge {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(16, 185, 129, 0.2));
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
}

.property-details p {
    color: var(--color-gray-600);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

/* Demo Timeline */
.project-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.timeline-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.timeline-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-weight: 700;
    color: var(--color-gray-600);
    flex-shrink: 0;
}

.timeline-marker.completed {
    background: var(--color-secondary);
    color: var(--color-white);
}

.timeline-marker.active {
    background: var(--color-primary);
    color: var(--color-white);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.timeline-content h4 {
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.timeline-content p {
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

/* Demo Map */
.tour-map {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.map-placeholder {
    flex: 1;
    background: linear-gradient(135deg, var(--color-gray-100), var(--color-gray-200));
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--color-gray-500);
    font-weight: 600;
}

.map-placeholder i {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.tour-stops {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stop-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.stop-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.stop-item strong {
    color: var(--color-dark);
    display: block;
    margin-bottom: 0.25rem;
}

.stop-item p {
    color: var(--color-gray-500);
    font-size: 0.85rem;
}

/* NEU: Specs Grid */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.spec-item {
    padding: var(--spacing-lg);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
}

.spec-item strong {
    display: block;
    color: var(--color-primary);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.spec-item p {
    color: var(--color-gray-600);
    font-size: 0.9rem;
}

.demo-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
    font-size: 0.85rem;
    margin-top: var(--spacing-lg);
}

.demo-note i {
    color: var(--color-primary);
    font-size: 1rem;
}

/* =========================================
   KONTAKT SECTION
   ========================================= */
.kontakt-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.kontakt-info .section-title {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.kontakt-info .section-tag {
    margin-bottom: var(--spacing-sm);
}

.kontakt-info > p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-2xl);
}

.kontakt-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.kontakt-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.kontakt-item i {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    flex-shrink: 0;
}

.kontakt-item span {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xs);
}

.kontakt-item a,
.kontakt-item p {
    font-weight: 600;
    color: var(--color-dark);
}

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

/* Kontakt Form */
.kontakt-form {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-200);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
    background: var(--color-dark);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    color: var(--color-primary-light);
}

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

.footer-links h4,
.footer-legal h4 {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-links ul,
.footer-legal ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a,
.footer-legal a {
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-legal a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    text-align: center;
    font-size: 0.875rem;
}

/* =========================================
   BACK TO TOP
   ========================================= */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */

/* Tablet */
@media (max-width: 1024px) {
    .kontakt-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
        margin-bottom: var(--spacing-xl);
    }

    .modal-tabs {
        overflow-x: auto;
    }

    .tour-map {
        flex-direction: column;
    }
}

/* Mobile Landscape */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    /* Navigation Mobile */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
        z-index: 1001;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        color: var(--color-dark);
        font-size: 1.25rem;
    }

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

    .nav-cta {
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-md);
    }

    /* Hero Mobile */
    .hero {
        padding: var(--spacing-3xl) var(--container-padding);
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .stat-divider {
        width: 50px;
        height: 1px;
    }

    /* Portfolio Grid */
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-filter {
        flex-direction: column;
    }

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

    /* Cards Grid */
    .branchen-grid {
        grid-template-columns: 1fr;
    }

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

    /* Modal Mobile */
    .modal {
        padding: var(--spacing-md);
    }

    .modal-content {
        max-height: 95vh;
    }

    .modal-header {
        flex-direction: column;
        text-align: center;
    }

    .modal-tabs {
        overflow-x: auto;
        padding: var(--spacing-md) var(--spacing-lg) 0;
    }

    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.85rem;
    }

    .modal-body {
        padding: var(--spacing-lg);
    }

    .features-list {
        grid-template-columns: 1fr;
    }

    .feature-block {
        padding: var(--spacing-md);
    }

    .spec-item {
        padding: var(--spacing-md);
    }

    /* Demo Containers */
    .demo-table {
        font-size: 0.8rem;
    }

    .demo-table th,
    .demo-table td {
        padding: var(--spacing-sm);
    }

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

    /* Footer Mobile */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        grid-column: auto;
    }

    .footer-brand p {
        margin: 0 auto;
    }

    .footer-logo {
        justify-content: center;
    }
}

/* Mobile Portrait */
@media (max-width: 480px) {
    section {
        padding: var(--spacing-3xl) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

    .branche-card {
        padding: var(--spacing-lg);
    }

    .kontakt-form {
        padding: var(--spacing-lg);
    }

    .back-to-top {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 40px;
        height: 40px;
    }

    .modal-header {
        padding: var(--spacing-lg);
    }

    .modal-icon {
        width: 60px;
        height: 60px;
        font-size: 1.75rem;
    }

    .modal-header h2 {
        font-size: 1.25rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}