/* ========================================
   VH Marketing Ventures - Modern Agency Theme
   Inspired by leading performance marketing agencies
   ======================================== */

:root {
    /* Colors - Clean & Contemporary */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f3f4f6;
    
    /* Typography Colors */
    --text-primary: #18181b; /* Zinc 900 */
    --text-secondary: #3f3f46; /* Zinc 700 */
    --text-muted: #71717a; /* Zinc 500 */
    
    /* Accent - Sophisticated Teal/Blue (Trust & Growth) */
    --accent-primary: #0d9488; /* Teal 600 */
    --accent-hover: #0f766e; /* Teal 700 */
    --accent-light: #ccfbf1; /* Teal 100 */
    --accent-soft: #f0fdfa; /* Teal 50 */
    
    /* Functional */
    --border-color: #e4e4e7; /* Zinc 200 */
    --success: #16a34a;
    
    /* Spacing & Layout */
    --container-max: 1140px;
    --section-padding: 100px;
    
    /* Typography */
    --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Transitions */
    --transition-base: 0.25s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

/* ========================================
   Reset & Base
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    font-size: 16px;
}

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

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

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

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.25rem; }

p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
}

/* ========================================
   Utility Classes
   ======================================== */

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 4rem;
}

.section-header p {
    margin-top: 1rem;
    font-size: 1.125rem;
    color: var(--text-muted);
}

.section-label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

/* ========================================
   Buttons
   ======================================== */

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    background-color: var(--accent-primary);
    color: white;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-primary.full-width {
    width: 100%;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    background: transparent;
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

/* ========================================
   Header
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.header.scrolled {
    padding: 14px 0;
    border-bottom-color: var(--border-color);
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--accent-primary);
}

.navbar {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.navbar a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.navbar .btn-primary {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    padding: 160px 0 100px;
    background-color: var(--bg-primary);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    max-width: 540px;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background-color: var(--accent-soft);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.hero-label .dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-primary);
    border-radius: 50%;
}

.hero-title {
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.metric-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: var(--transition-base);
}

.metric-card:hover {
    border-color: var(--accent-primary);
    background: var(--accent-soft);
}

.metric-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.metric-value span {
    font-size: 1.25rem;
    color: var(--accent-primary);
}

/* ========================================
   About Section (Über uns)
   ======================================== */

.about {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-content .section-label {
    margin-bottom: 1rem;
}

.about-content h2 {
    margin-bottom: 1.5rem;
}

.about-content p {
    margin-bottom: 1.25rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.highlight-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.highlight-icon svg {
    width: 14px;
    height: 14px;
    color: var(--accent-primary);
}

.highlight-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.about-visual {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.about-stats {
    display: grid;
    gap: 2rem;
}

.about-stat {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.about-stat:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.about-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.25rem;
}

.about-stat-label {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

/* ========================================
   Results Section
   ======================================== */

.results {
    padding: var(--section-padding) 0;
    background: white;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.result-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition-base);
}

.result-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.result-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.result-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.result-suffix {
    font-size: 1.25rem;
    color: var(--accent-primary);
    font-weight: 600;
}

.result-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

/* ========================================
   Services Section
   ======================================== */

.services {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition-base);
}

.service-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.1);
}

.service-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-soft);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
    font-size: 1.25rem;
}

.service-card h3 {
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.service-list {
    list-style: none;
}

.service-list li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-list li:first-child {
    border-top: none;
}

.service-list .check {
    color: var(--accent-primary);
    font-size: 0.75rem;
}

/* ========================================
   Calculator Section
   ======================================== */

.calculator {
    padding: var(--section-padding) 0;
    background: white;
}

.calculator-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
}

.calc-header {
    text-align: center;
    margin-bottom: 3rem;
}

.calc-header h2 {
    margin-bottom: 0.5rem;
}

.calc-header p {
    color: var(--text-muted);
}

.calc-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.calc-controls {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.control-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-top: 0.5rem;
}

.control-group.static {
    background: var(--accent-soft);
    margin: 0 -2rem;
    padding: 1.25rem 2rem;
    border-radius: var(--radius-sm);
}

.static-value {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.static-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.static-unit {
    font-size: 0.875rem;
    color: var(--text-muted);
}

input[type=range] {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    appearance: none;
    outline: none;
}

input[type=range]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-base);
}

input[type=range]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.calc-summary {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
}

.summary-label {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
}

.summary-row span:first-child {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.summary-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

.summary-row.highlight {
    background: var(--accent-soft);
    margin: 0.5rem -2rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
}

.summary-row.highlight span:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.value-muted {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.value-primary {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
}

.value-accent {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-primary);
}

/* ========================================
   Process Section
   ======================================== */

.process {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--accent-primary);
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
    border-radius: 50%;
    margin-bottom: 1.25rem;
}

.step-item h3 {
    margin-bottom: 0.5rem;
}

.step-item p {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

/* ========================================
   Contact Section
   ======================================== */

.contact {
    padding: var(--section-padding) 0;
    background: white;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.contact-info {
    padding: 3rem;
    background: var(--accent-primary);
    color: white;
}

.contact-info h2 {
    color: white;
    margin-bottom: 1rem;
}

.contact-info > p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: white;
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.6);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-weight: 500;
}

.contact-form-wrapper {
    padding: 3rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    color: var(--text-primary);
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

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

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--bg-secondary);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 0.75rem;
    display: block;
}

.footer-tagline {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========================================
   Animation
   ======================================== */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-visual {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .calc-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 70px;
    }
    
    .navbar {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-visual {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 2rem;
    }
}

/* ========================================
   Legal Pages
   ======================================== */

.page-header {
    padding: 140px 0 50px;
    background: var(--bg-secondary);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 2rem;
}

.legal-content {
    max-width: 760px;
    margin: 0 auto;
    padding: 4rem 24px 6rem;
}

.legal-content h2 {
    font-size: 1.375rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.legal-content h3 {
    font-size: 1.125rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.legal-content p {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.legal-content ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.legal-content li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.legal-content a {
    color: var(--accent-primary);
}

.legal-content a:hover {
    text-decoration: underline;
}