/* ==========================================================================
   Design System & Styling - DeineKVZusatz.de (Redesign Upgrade)
   ========================================================================== */

/* 1. Global Reset & Variables */
:root {
    --color-primary: #0d9488;      /* Premium Teal */
    --color-primary-hover: #0f766e;/* Deep Teal */
    --color-primary-light: #f0fdfa;/* Soft Teal BG */
    --color-primary-border: #ccfbf1;
    
    --color-dark: #0f172a;         /* Slate 900 */
    --color-dark-muted: #475569;   /* Slate 600 */
    --color-light: #ffffff;
    --color-light-neutral: #f8fafc;/* Slate 50 */
    --color-border: #e2e8f0;       /* Slate 200 */
    
    --color-error: #ef4444;        /* Red 500 */
    --color-error-bg: #fef2f2;
    --color-success: #10b981;      /* Emerald 500 */
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.06), 0 4px 6px -4px rgba(15, 23, 42, 0.06);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    
    --max-width: 1200px;
    --border-radius: 12px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-dark);
    background-color: var(--color-light-neutral);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

/* 2. Typography & Core Layout Elements */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-dark);
}

p {
    color: var(--color-dark-muted);
}

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

/* Button Component */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    outline: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-light);
    box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
}

.btn-secondary {
    background-color: var(--color-light);
    color: var(--color-dark);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-light-neutral);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-light);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

/* 3. Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.80);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
    transition: background var(--transition-fast);
}

.header-container {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-dark);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

.highlight-text {
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-dark-muted);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-dark);
    transition: all var(--transition-base);
}

/* 4. Hero Section */
.hero-section {
    padding-top: 160px;
    padding-bottom: 80px;
    background: radial-gradient(circle at 50% 30%, rgba(13, 148, 136, 0.06) 0%, transparent 60%);
    overflow: hidden;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 9999px;
    margin-bottom: 20px;
    border: 1px solid var(--color-primary-border);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, #0f766e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subline {
    font-size: 1.15rem;
    margin-bottom: 36px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    width: 100%;
}

.hero-trust {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-dark-muted);
}

.trust-icon {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

/* Hero Visual Cards - Premium 3D Glassmorphism Interface */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1200px; /* Activates 3D space depth */
}

.visual-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    padding: 28px;
    border-radius: 24px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.5);
    width: 100%;
    max-width: 380px;
    z-index: 2;
    position: relative;
    transform: rotateY(-10deg) rotateX(6deg) rotateZ(-2deg);
    transform-style: preserve-3d;
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.visual-card:hover {
    transform: rotateY(-4deg) rotateX(2deg) rotateZ(-1deg);
    box-shadow: 0 40px 80px rgba(13, 148, 136, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.visual-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 24px;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.2);
    animation: pulse 2s infinite;
}

/* Dashboard Rows */
.visual-row-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.visual-row-item:last-child {
    margin-bottom: 0;
}

.visual-icon-box {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.visual-icon-box svg {
    width: 20px;
    height: 20px;
}

.clinic-color {
    background-color: rgba(13, 148, 136, 0.1);
    color: var(--color-primary);
}

.tooth-color {
    background-color: rgba(2, 132, 199, 0.1);
    color: #0284c7;
}

.nature-color {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.visual-item-content {
    flex-grow: 1;
}

.visual-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.visual-item-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-dark);
}

.visual-item-percent {
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--color-dark-muted);
}

.visual-bar-bg {
    height: 8px;
    background-color: var(--color-border);
    border-radius: 9999px;
    overflow: hidden;
}

.visual-bar {
    height: 100%;
    border-radius: 9999px;
    background: linear-gradient(90deg, var(--color-primary) 0%, #2dd4bf 100%);
}

.tooth-color + .visual-item-content .visual-bar {
    background: linear-gradient(90deg, #0284c7 0%, #38bdf8 100%);
}

.nature-color + .visual-item-content .visual-bar {
    background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
}

.visual-footer {
    margin-top: 24px;
    font-size: 0.75rem;
    color: var(--color-dark-muted);
    text-align: center;
    font-weight: 600;
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
}

/* Secondary Badge - Floating 3D */
.visual-card-secondary {
    position: absolute;
    width: 140px;
    padding: 16px;
    border-radius: 20px;
    bottom: -24px;
    right: -16px;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transform: translateZ(40px) rotateY(-10deg) rotateX(6deg) rotateZ(-2deg);
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.visual-card-secondary:hover {
    transform: translateZ(60px) rotateY(-4deg) rotateX(2deg) rotateZ(-1deg);
    box-shadow: 0 25px 45px rgba(2, 132, 199, 0.1);
}

.circular-progress {
    width: 56px;
    height: 56px;
    margin-bottom: 8px;
}

.circular-chart {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

.circle-bg {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 3.5;
}

.circle {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 3.5;
    stroke-linecap: round;
    transition: stroke-dasharray 0.3s ease;
}

.percentage {
    fill: var(--color-dark);
    font-family: var(--font-sans);
    font-size: 9px;
    font-weight: 800;
    text-anchor: middle;
}

.circular-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-dark-muted);
    text-align: center;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(13, 148, 136, 0); }
    100% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0); }
}

/* 5. Trust Banner Section */
.trust-banner {
    background-color: var(--color-light);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 30px 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.trust-banner-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.trust-banner-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trust-banner-icon svg {
    width: 22px;
    height: 22px;
}

.trust-banner-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.trust-banner-item p {
    font-size: 0.8rem;
}

/* 6. Dynamic Product Tabs & Tariff Cards */
.tarife-section {
    padding: 100px 0;
    background-color: var(--color-light-neutral);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
}

/* Tab Switcher Styles */
.tab-switcher-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.tab-switcher {
    background-color: var(--color-border);
    padding: 6px;
    border-radius: 9999px;
    display: inline-flex;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.tab-btn {
    border: none;
    outline: none;
    background: transparent;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark-muted);
    padding: 12px 28px;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-base);
    position: relative;
    z-index: 2;
}

.tab-icon {
    width: 18px;
    height: 18px;
    color: var(--color-dark-muted);
    transition: color var(--transition-base);
}

.tab-btn.active {
    color: var(--color-dark);
    background-color: var(--color-light);
    box-shadow: var(--shadow-md);
}

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

/* Tab Panels */
.tab-panel {
    display: none;
    opacity: 0;
}

.tab-panel.active {
    display: block;
    animation: fadeIn var(--transition-slow) forwards;
}

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

/* Tariff Cards Grid */
.tariffs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: stretch;
}

.tariff-card {
    background-color: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 40px 30px;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
}

.tariff-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(13, 148, 136, 0.2);
}

.tariff-card.featured {
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(180deg, var(--color-light) 0%, var(--color-primary-light) 100%);
}

.tariff-card-badge {
    align-self: flex-start;
    padding: 4px 12px;
    background-color: var(--color-light-neutral);
    border: 1px solid var(--color-border);
    color: var(--color-dark-muted);
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.featured .tariff-card-badge {
    background-color: var(--color-primary);
    color: var(--color-light);
    border-color: var(--color-primary);
}

.tariff-card-title {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.tariff-card-subtitle {
    font-size: 0.85rem;
    color: var(--color-dark-muted);
    margin-bottom: 24px;
    line-height: 1.5;
}

.tariff-divider {
    height: 1px;
    background-color: var(--color-border);
    width: 100%;
    margin-bottom: 24px;
}

.tariff-features-preview {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 36px;
    flex-grow: 1;
}

.tariff-features-preview li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--color-dark-muted);
}

.tariff-features-preview li span {
    line-height: 1.4;
}

.tick-icon {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 3px;
}

.tariff-card-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tariff-card-actions .btn {
    width: 100%;
}

/* 6.5 Testimonials Section (Social Proof) */
.testimonials-section {
    padding: 100px 0;
    background-color: var(--color-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-card {
    background-color: var(--color-light-neutral);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stars-box {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 18px;
}

.star-icon {
    color: #f59e0b; /* Amber 500 */
    font-size: 1.3rem;
}

.rating-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-left: 8px;
    background-color: #fef3c7; /* Amber 100 */
    padding: 2px 8px;
    border-radius: 9999px;
}

.testimonial-quote {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-dark-muted);
    font-style: italic;
    margin-bottom: 24px;
    flex-grow: 1;
}

.testimonial-author {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-dark);
}

/* 6.8 Steps Timeline Section (Conversion Optimization) */
.steps-section {
    padding: 100px 0;
    background-color: var(--color-light-neutral);
    border-top: 1px solid var(--color-border);
}

.steps-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.steps-timeline::before {
    content: '';
    position: absolute;
    top: 25px;
    left: 15%;
    right: 15%;
    height: 2px;
    background-color: var(--color-border);
    z-index: 1;
}

.step-item {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.step-number-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-light);
    font-weight: 800;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 0 0 6px var(--color-primary-border);
}

.step-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.step-desc {
    font-size: 0.85rem;
    color: var(--color-dark-muted);
    line-height: 1.5;
}

/* 7. Lead Capture Form Section */
.form-section {
    padding: 100px 0;
    background-color: var(--color-light);
    border-top: 1px solid var(--color-border);
}

.form-container-box {
    max-width: 900px;
}

.form-header {
    text-align: center;
    margin-bottom: 48px;
}

.form-title {
    font-size: 2rem;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.form-subtitle {
    font-size: 1.05rem;
}

.form-card-wrapper {
    background-color: var(--color-light-neutral);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    padding: 50px;
    position: relative;
    overflow: hidden;
}

.form-section-label {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 20px;
}

/* Step 1: Selectors Grid */
.form-group-selectors {
    margin-bottom: 40px;
    position: relative;
}

.selectors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.selector-card {
    position: relative;
    cursor: pointer;
    user-select: none;
}

.selector-checkbox {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.selector-content {
    background-color: var(--color-light);
    border: 2px solid var(--color-border);
    padding: 24px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all var(--transition-base);
}

.selector-icon-box {
    width: 44px;
    height: 44px;
    background-color: var(--color-light-neutral);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark-muted);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.selector-icon-box svg {
    width: 20px;
    height: 20px;
}

.selector-text {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-dark);
    flex-grow: 1;
    display: flex;
    align-items: center;
    gap: 6px;
}

.badge-mini {
    font-size: 0.65rem;
    font-weight: 800;
    background-color: var(--color-primary);
    color: var(--color-light);
    padding: 2px 8px;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.custom-checkbox {
    width: 22px;
    height: 22px;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    background-color: var(--color-light);
    position: relative;
    transition: all var(--transition-fast);
}

/* Checked States */
.selector-checkbox:checked + .selector-content {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.selector-checkbox:checked + .selector-content .selector-icon-box {
    color: var(--color-primary);
    border-color: var(--color-primary-border);
}

.selector-checkbox:checked + .selector-content .custom-checkbox {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
}

.selector-checkbox:checked + .selector-content .custom-checkbox::after {
    content: "";
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid var(--color-light);
    border-width: 0 2.5px 2.5px 0;
    transform: rotate(45deg);
}

/* Step 2: Inputs Group */
.form-inputs-group {
    margin-bottom: 24px;
}

.input-row {
    margin-bottom: 24px;
}

.split-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.input-field-wrapper {
    position: relative;
}

.input-field-wrapper input {
    width: 100%;
    padding: 16px 20px;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-dark);
    background-color: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    outline: none;
    transition: all var(--transition-base);
}

.input-field-wrapper input:focus {
    border-color: var(--color-primary);
    background-color: var(--color-light);
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
}

/* Floating labels effect */
.input-field-wrapper .input-label {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.95rem;
    color: var(--color-dark-muted);
    pointer-events: none;
    transition: all var(--transition-base);
}

.input-field-wrapper input:focus + .input-label,
.input-field-wrapper input:not(:placeholder-shown) + .input-label {
    top: 0;
    left: 14px;
    transform: translateY(-50%) scale(0.85);
    background-color: var(--color-light-neutral);
    padding: 0 8px;
    color: var(--color-primary);
    font-weight: 600;
}

/* Placeholder visibility */
.input-field-wrapper input::placeholder {
    opacity: 0;
}

/* Error States */
.error-msg {
    display: none;
    color: var(--color-error);
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 6px;
    margin-left: 4px;
}

.input-field-wrapper.invalid input {
    border-color: var(--color-error);
    background-color: var(--color-error-bg);
}

.input-field-wrapper.invalid input:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.input-field-wrapper.invalid .input-label {
    color: var(--color-error);
}

/* DSGVO Legal Consent Checkbox */
.form-group-consent {
    margin-bottom: 40px;
}

.consent-checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.consent-checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    margin-top: 4px;
    flex-shrink: 0;
    cursor: pointer;
}

.consent-text {
    font-size: 0.85rem;
    color: var(--color-dark-muted);
    line-height: 1.5;
}

.consent-link {
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: 600;
    transition: color var(--transition-fast);
}

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

.form-group-consent.invalid .consent-text {
    color: var(--color-error);
}

/* Submit and Security */
.form-submit-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.btn-submit {
    width: 100%;
    max-width: 400px;
    position: relative;
}

.btn-submit .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-light);
    animation: spin 1s ease-in-out infinite;
    position: absolute;
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .spinner {
    display: block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.security-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-dark-muted);
}

.security-icon {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
}

/* Success Card */
.success-card {
    display: none;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px 0;
    animation: scaleUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.success-icon-box {
    width: 80px;
    height: 80px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: 0 0 0 8px rgba(13, 148, 136, 0.05);
}

.success-icon-box svg {
    width: 36px;
    height: 36px;
}

.success-title {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.success-text {
    font-size: 1rem;
    max-width: 500px;
    margin-bottom: 30px;
}

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

/* 8. FAQ Section Accordion */
.faq-section {
    padding: 100px 0;
    background-color: var(--color-light-neutral);
    border-top: 1px solid var(--color-border);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    outline: none;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--color-dark);
    cursor: pointer;
    text-align: left;
    gap: 20px;
}

.faq-arrow {
    width: 20px;
    height: 20px;
    color: var(--color-dark-muted);
    transition: transform var(--transition-base), color var(--transition-base);
    flex-shrink: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) cubic-bezier(0, 1, 0, 1), padding var(--transition-base);
    padding: 0 24px;
}

.faq-answer p {
    font-size: 0.95rem;
    color: var(--color-dark-muted);
    padding-bottom: 24px;
    line-height: 1.6;
}

/* Accordion Active States */
.faq-item.active {
    border-color: var(--color-primary-border);
    box-shadow: var(--shadow-md);
}

.faq-item.active .faq-arrow {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-item.active .faq-answer {
    max-height: 500px; /* High enough value to support content expansion */
    transition: max-height var(--transition-slow) cubic-bezier(0.85, 0, 0.15, 1);
}

/* 9. Popup Modals (Lightbox Overlays) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.40);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-box {
    background-color: var(--color-light);
    width: 100%;
    max-width: 600px;
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
    position: relative;
    transform: translateY(20px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-overlay.active .modal-box {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 2rem;
    line-height: 0.5;
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    color: var(--color-dark-muted);
    transition: color var(--transition-fast);
    padding: 6px;
}

.modal-close:hover {
    color: var(--color-dark);
}

.modal-header {
    margin-bottom: 24px;
}

.modal-badge {
    display: inline-block;
    padding: 4px 10px;
    background-color: var(--color-light-neutral);
    border: 1px solid var(--color-border);
    color: var(--color-dark-muted);
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.modal-badge.highlight {
    background-color: var(--color-primary);
    color: var(--color-light);
    border-color: var(--color-primary);
}

.modal-title {
    font-size: 1.8rem;
    margin-bottom: 6px;
}

.modal-subtitle {
    font-size: 0.9rem;
    color: var(--color-dark-muted);
}

.modal-body {
    overflow-y: auto;
    margin-bottom: 28px;
    padding-right: 8px;
}

/* Custom Scrollbar for Modal Body */
.modal-body::-webkit-scrollbar {
    width: 6px;
}
.modal-body::-webkit-scrollbar-track {
    background: var(--color-light-neutral);
    border-radius: 999px;
}
.modal-body::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 999px;
}
.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--color-dark-muted);
}

.modal-intro {
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.modal-bullets {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-bullets li {
    position: relative;
    padding-left: 28px;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--color-dark-muted);
}

.modal-bullets li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 5px;
    width: 14px;
    height: 8px;
    border: solid var(--color-primary);
    border-width: 0 0 2.5px 2.5px;
    transform: rotate(-45deg);
}

.modal-bullets li strong {
    color: var(--color-dark);
}

.modal-footer {
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
    display: flex;
    justify-content: flex-end;
}

.modal-footer .btn {
    width: 100%;
    max-width: 250px;
}

/* 10. Footer Styles */
.site-footer {
    background-color: var(--color-dark);
    color: var(--color-light);
    padding: 60px 0 40px;
}

.footer-container {
    display: flex;
    flex-direction: column;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
}

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

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

.footer-tagline {
    max-width: 450px;
    font-size: 0.9rem;
    color: #94a3b8; /* Slate 400 */
}

.footer-divider {
    border: 0;
    height: 1px;
    background-color: #334155; /* Slate 700 */
    margin: 40px 0 30px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.copyright {
    font-size: 0.85rem;
    color: #94a3b8;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-link {
    font-size: 0.85rem;
    color: #94a3b8;
    transition: color var(--transition-fast);
}

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


/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Tablet (Medium screens) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-trust {
        justify-content: center;
    }
    
    .hero-visual {
        margin-top: 20px;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .tariffs-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .steps-timeline {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .steps-timeline::before {
        display: none; /* Hide connecting horizontal line on mobile/tablet */
    }
}

/* Mobile (Small screens) */
@media (max-width: 768px) {
    .site-header {
        background-color: var(--color-light);
    }
    
    .header-actions .btn {
        display: none; /* Hide primary CTA in mobile header to save space */
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background-color: var(--color-light);
        flex-direction: column;
        padding: 40px 24px;
        gap: 24px;
        border-top: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition-slow), opacity var(--transition-slow);
    }
    
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .nav-btn-mobile {
        display: flex;
        width: 100%;
        text-align: center;
        background-color: var(--color-primary);
        color: var(--color-light);
        padding: 14px;
        border-radius: 9999px;
        font-weight: 600;
        justify-content: center;
        box-shadow: 0 4px 10px rgba(13, 148, 136, 0.2);
    }
    
    .nav-btn-mobile:hover {
        background-color: var(--color-primary-hover);
        color: var(--color-light);
    }
    
    /* Hamburger to X morph */
    .menu-toggle.open .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .menu-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    /* Hero Adjustments */
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-trust {
        flex-direction: column;
        gap: 12px;
    }
    
    .visual-card-secondary {
        right: 10px;
    }
    
    /* Form Adjustments */
    .form-card-wrapper {
        padding: 30px 20px;
    }
    
    .selectors-grid {
        grid-template-columns: 1fr;
    }
    
    .split-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    /* Footer Adjustments */
    .footer-top {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    /* Modal adjustments */
    .modal-box {
        padding: 30px 20px;
    }
    
    .modal-title {
        font-size: 1.4rem;
    }
    
    .modal-footer .btn {
        max-width: 100%;
    }
}

/* ==========================================================================
   8. Extra Mobile Adjustments (Custom Optimization)
   ========================================================================= */
@media (max-width: 768px) {
    .hero-section {
        padding-top: 120px;
        padding-bottom: 60px;
    }
    
    .trust-banner {
        padding: 40px 0;
    }
    
    .tarife-section {
        padding: 60px 0;
    }
    
    .testimonials-section {
        padding: 60px 0;
    }
    
    .steps-section {
        padding: 60px 0;
    }
    
    .form-section {
        padding: 60px 0;
    }
    
    .faq-section {
        padding: 60px 0;
    }
    
    .site-footer {
        padding: 40px 0 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }

    /* Hero */
    .hero-title {
        font-size: 1.85rem;
        line-height: 1.25;
    }
    
    .hero-subline {
        font-size: 1rem;
        margin-bottom: 24px;
    }
    
    /* Tab Switcher - expand to full width and make buttons equal width */
    .tab-switcher {
        width: 100%;
        display: flex;
    }
    
    .tab-btn {
        flex: 1;
        padding: 10px 8px;
        font-size: 0.85rem;
        justify-content: center;
        gap: 4px;
    }
    
    .tab-icon {
        width: 14px;
        height: 14px;
    }

    /* Tariff Cards */
    .tariff-card {
        padding: 30px 20px;
        border-radius: 16px;
    }
    
    .tariff-card-title {
        font-size: 1.35rem;
    }
    
    .tariff-features-preview {
        gap: 12px;
        margin-bottom: 24px;
    }
    
    .tariff-features-preview li {
        font-size: 0.85rem;
    }

    /* Timeline Steps: Horizontal alignment instead of centered stack */
    .steps-timeline {
        display: flex;
        flex-direction: column;
        gap: 24px;
        padding: 0 10px;
    }
    
    .step-item {
        flex-direction: row;
        text-align: left;
        gap: 16px;
        align-items: flex-start;
    }
    
    .step-number-circle {
        margin-bottom: 0;
        width: 36px;
        height: 36px;
        font-size: 1rem;
        flex-shrink: 0;
        box-shadow: 0 0 0 4px var(--color-primary-border);
    }
    
    .step-title {
        margin-top: 2px;
        font-size: 0.95rem;
        margin-bottom: 4px;
    }
    
    .step-desc {
        font-size: 0.8rem;
    }

    /* Comparison Cards */
    .testimonial-card {
        padding: 24px 20px !important;
        border-radius: 16px;
    }
    
    .testimonial-card h3 {
        font-size: 1.15rem !important;
    }
    
    .testimonial-card ul li {
        font-size: 0.85rem !important;
    }

    /* Lead Form Card */
    .form-card-wrapper {
        padding: 24px 16px;
        border-radius: 16px;
    }
    
    .form-title {
        font-size: 1.6rem;
    }
    
    .form-subtitle {
        font-size: 0.95rem;
    }

    .selector-content {
        padding: 16px;
        gap: 12px;
        border-radius: 12px;
    }
    
    .selector-icon-box {
        width: 36px;
        height: 36px;
        border-radius: 8px;
    }
    
    .selector-icon-box svg {
        width: 16px;
        height: 16px;
    }
    
    .selector-text {
        font-size: 0.85rem;
    }
    
    .custom-checkbox {
        width: 18px;
        height: 18px;
        border-radius: 4px;
    }
    
    .selector-checkbox:checked + .selector-content .custom-checkbox::after {
        left: 5px;
        top: 1px;
        width: 4px;
        height: 8px;
    }

    .input-field-wrapper input {
        padding: 14px 16px;
        font-size: 0.95rem;
    }
    
    .input-field-wrapper .input-label {
        left: 16px;
        font-size: 0.9rem;
    }
    
    .input-field-wrapper input:focus + .input-label,
    .input-field-wrapper input:not(:placeholder-shown) + .input-label {
        left: 12px;
    }
    
    .consent-text {
        font-size: 0.8rem;
    }
    
    .btn-submit {
        padding: 14px;
        font-size: 0.95rem;
    }
    
    /* Modals */
    .modal-box {
        padding: 24px 16px;
        border-radius: 16px;
    }
    
    .modal-title {
        font-size: 1.25rem;
    }
    
    .modal-bullets li {
        font-size: 0.85rem;
    }
}