/* ===========================
   OKAYPLAY - Minimalistisches S/W Design
   Nur Schwarz und Weiß
   =========================== */

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #000000;
    --white: #FFFFFF;
    --gray-dark: #666666;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --line-height: 1.6;
    --line-tight: 1.2;
    
    --transition: 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    line-height: var(--line-height);
    color: var(--black);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 400;
    line-height: var(--line-tight);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: var(--space-sm);
    font-size: 1.125rem;
    line-height: 1.8;
}

a {
    color: var(--black);
    text-decoration: none;
    transition: opacity var(--transition);
}

a:hover {
    opacity: 0.6;
}

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

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

section {
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--black);
    background-color: var(--white);
}

section:last-of-type {
    border-bottom: none;
}

/* ===========================
   Header
   =========================== */
.main-header {
    position: sticky;
    top: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--black);
    z-index: 1000;
    padding: var(--space-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 500;
    font-size: 1.25rem;
    letter-spacing: 0.05em;
}

.logo-img {
    width: 40px;
    height: 40px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.main-nav a {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--black);
    transition: width var(--transition);
}

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

.main-nav a:hover {
    opacity: 1;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--black);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--white);
}

.hero-content {
    max-width: 900px;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--gray-dark);
    font-weight: 300;
    letter-spacing: 0.05em;
}

/* ===========================
   Problem Section - 1% Bild
   =========================== */
.problem-section {
    text-align: center;
    background-color: var(--white);
}

.stat-circle {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.stat-image {
    width: 180px;
    height: 180px;
    object-fit: contain;
}

.problem-section h2 {
    max-width: 700px;
    margin: 0 auto var(--space-md);
}

.problem-section p {
    max-width: 600px;
    margin: 0 auto var(--space-sm);
}

.emphasis {
    font-size: 1.25rem;
    font-weight: 500;
    font-style: italic;
    margin-top: var(--space-lg);
    padding: var(--space-md);
    border-left: 3px solid var(--black);
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===========================
   Solution Section
   =========================== */
.solution-section {
    background-color: var(--white);
}

.solution-section .intro {
    max-width: 800px;
    margin: 0 auto var(--space-lg);
    text-align: center;
    font-size: 1.25rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.feature {
    text-align: center;
    padding: var(--space-md);
    border: 1px solid var(--black);
    transition: var(--transition);
    background-color: var(--white);
}

.feature:hover {
    background-color: var(--black);
    color: var(--white);
}

.feature:hover .feature-icon {
    filter: invert(1);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-sm);
    transition: var(--transition);
}

.feature h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.feature p {
    font-size: 1rem;
    color: var(--gray-dark);
    margin: 0;
    transition: var(--transition);
}

/* ===========================
   Audio Section
   =========================== */
.audio-section {
    background-color: var(--white);
    text-align: center;
}

.audio-section > .container > p {
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    color: var(--gray-dark);
}

.audio-players {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.audio-player {
    background-color: var(--white);
    padding: var(--space-md);
    border: 1px solid var(--black);
    text-align: center;
    transition: var(--transition);
}

.audio-player:hover {
    background-color: var(--black);
    color: var(--white);
}

.audio-player:hover .player-icon-img {
    filter: invert(1);
}

.audio-player:hover .audio-desc {
    color: var(--white);
}

.player-icon-img {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-sm);
    transition: var(--transition);
}

.audio-player h3 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.audio-desc {
    font-size: 0.875rem;
    color: var(--gray-dark);
    margin-bottom: var(--space-md);
    transition: var(--transition);
}

.audio-player audio {
    width: 100%;
    height: 40px;
    outline: none;
}

/* ===========================
   Four Pillars Section
   =========================== */
.pillars-section {
    background-color: var(--white);
}

.pillars-section h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.pillar {
    text-align: center;
    padding: var(--space-md);
}

.pillar-icon-img {
    width: 56px;
    height: 56px;
    margin-bottom: var(--space-md);
}

.pillar h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.pillar p {
    font-size: 1rem;
    color: var(--gray-dark);
    line-height: 1.7;
}

/* ===========================
   USP Section
   =========================== */
.usp-section {
    background-color: var(--white);
}

.usp-section h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.usp-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.visual-element {
    aspect-ratio: 16/9;
    border: 1px solid var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--white);
}

.waveform {
    width: 100%;
    height: 60%;
    background-image: 
        linear-gradient(var(--black) 1px, transparent 1px),
        linear-gradient(90deg, var(--black) 1px, transparent 1px);
    background-size: 16px 16px;
    position: relative;
}

.waveform::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        transparent 10%,
        var(--black) 10%,
        var(--black) 12%,
        transparent 12%,
        transparent 25%,
        var(--black) 25%,
        var(--black) 28%,
        transparent 28%,
        transparent 40%,
        var(--black) 40%,
        var(--black) 45%,
        transparent 45%,
        transparent 60%,
        var(--black) 60%,
        var(--black) 62%,
        transparent 62%,
        transparent 75%,
        var(--black) 75%,
        var(--black) 80%,
        transparent 80%,
        transparent 100%
    );
}

.usp-text h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.usp-text p {
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    text-align: center;
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-xl) 0;
    border-bottom: none;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: var(--space-sm);
}

.cta-section p {
    color: var(--white);
    opacity: 0.8;
    margin-bottom: var(--space-lg);
    font-size: 1.25rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

.btn {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 2px solid var(--white);
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    font-weight: 500;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--white);
    opacity: 1;
}

/* ===========================
   Footer
   =========================== */
.main-footer {
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--gray-dark);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 500;
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
    color: var(--white);
}

.footer-logo:hover {
    opacity: 0.8;
}

.footer-column h4 {
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--space-xs);
}

.footer-column a {
    color: var(--white);
    opacity: 0.7;
    font-size: 0.95rem;
    transition: opacity var(--transition);
}

.footer-column a:hover {
    opacity: 1;
}

.footer-tagline {
    color: var(--white);
    opacity: 0.7;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Kontaktformular im Footer */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: var(--space-sm);
}

.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
}

.contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--white);
    background-color: transparent;
    color: var(--white);
    font-family: var(--font-main);
    font-size: 0.95rem;
    resize: vertical;
    min-height: 100px;
}

.contact-form textarea::placeholder {
    color: var(--white);
    opacity: 0.5;
}

.contact-form button {
    padding: 0.75rem 1.5rem;
    background-color: var(--white);
    color: var(--black);
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.contact-form button:hover {
    background-color: transparent;
    color: var(--white);
    border: 1px solid var(--white);
}

.footer-bottom {
    padding-top: var(--space-md);
}

.footer-legal {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-legal p {
    color: var(--white);
    opacity: 0.5;
    font-size: 0.85rem;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--white);
    opacity: 0.5;
    font-size: 0.85rem;
}

.footer-links a:hover {
    opacity: 1;
}

/* ===========================
   Legal Pages
   =========================== */
.legal-page {
    padding: var(--space-xl) 0;
    min-height: 60vh;
    background-color: var(--white);
}

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

.legal-page h3 {
    margin-top: var(--space-md);
    margin-bottom: var(--space-sm);
}

/* ===========================
   Danke-Seite
   =========================== */
.thank-you-section {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xl) 0;
    background-color: var(--white);
}

.thank-you-content {
    max-width: 500px;
}

.checkmark {
    width: 80px;
    height: 80px;
    border: 3px solid var(--black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--space-md);
}

.thank-you-content h1 {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.thank-you-content p {
    color: var(--gray-dark);
    margin-bottom: var(--space-lg);
}

.btn-dark {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--black);
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
    font-size: 0.9rem;
    border: 2px solid var(--black);
    transition: var(--transition);
}

.btn-dark:hover {
    background-color: transparent;
    color: var(--black);
    opacity: 1;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pillars-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .audio-players {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-top: 1px solid var(--black);
        border-bottom: 1px solid var(--black);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition);
    }
    
    .main-nav.active {
        max-height: 400px;
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: var(--space-md);
    }
    
    .main-nav a::after {
        display: none;
    }
    
    .usp-content {
        grid-template-columns: 1fr;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .pillars-grid {
        grid-template-columns: 1fr;
    }
    
    .audio-players {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-legal {
        flex-direction: column;
        text-align: center;
        gap: var(--space-sm);
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero {
        min-height: 50vh;
    }
    
    .subtitle {
        font-size: 1.125rem;
    }
    
    .stat-image {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 4rem;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .stat-image {
        width: 120px;
        height: 120px;
    }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    .main-header,
    .main-footer,
    .cta-section,
    .mobile-menu-toggle {
        display: none;
    }
    
    body {
        color: var(--black);
        background: var(--white);
    }
    
    section {
        border: none;
        page-break-inside: avoid;
    }
}