/**
 * KeepItGreen - Landing Page Styles
 * Modern, minimalistisches Design inspiriert von Holo.ai
 */

/* Landing Page Base */
.landing-page {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: #1d1d1f;
    background: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation - Clean & Minimal */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.landing-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1.375rem;
    font-weight: 800;
    color: #22c55e;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.logo-img {
    height: 36px;
    width: auto;
}

.logo-icon {
    font-size: 1.5rem;
}

.footer-logo-modern {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
}

.footer-logo-modern .logo-img {
    height: 32px;
}

.footer-logo-modern .logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: #34C759;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.nav-link {
    color: #374151;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: color 0.2s ease;
    letter-spacing: -0.01em;
}

.nav-link:hover {
    color: #22c55e;
}

.btn-nav-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: -0.01em;
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.25);
}

.btn-nav-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.35);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #374151;
}

/* Hero Section - Modern & Minimalistisch */
.hero-modern {
    padding: 16rem 2rem 12rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.hero-content-modern {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(52, 199, 89, 0.1);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #34C759;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out;
}

.hero-title-modern {
    font-size: clamp(4rem, 12vw, 6rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 3rem;
    color: #1d1d1f;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: baseline;
    gap: 0.75rem;
    letter-spacing: -0.04em;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: baseline;
    gap: 0.75rem;
}

.hero-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUpWord 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.gradient-text {
    background: linear-gradient(135deg, #34C759 0%, #28A745 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle-modern {
    font-size: clamp(1.25rem, 2.5vw, 1.2rem);
    color: #6e6e73;
    line-height: 1.4;
    margin-bottom: 3.5rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.hero-cta-modern {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    animation: fadeInUp 1.2s ease-out 0.6s both;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    padding: 1.125rem 2.5rem;
    background: #1d1d1f;
    color: white;
    text-decoration: none;
    border-radius: 14px;
    font-size: 1.125rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    letter-spacing: -0.01em;
}

.btn-hero-primary:hover {
    background: #34C759;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(52, 199, 89, 0.25);
}

.btn-hero-secondary {
    color: #1d1d1f;
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 600;
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
}

.btn-hero-secondary:hover {
    color: #34C759;
    transform: translateX(4px);
}

.hero-trust {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 3rem 4rem;
    padding-top: 4rem;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    animation: fadeInUp 1.4s ease-out 0.8s both;
}

.trust-item {
    text-align: center;
    font-size: 0.9375rem;
    color: #6e6e73;
    font-weight: 400;
    min-width: 120px;
}

.trust-item strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: #1d1d1f;
    margin-bottom: 0.35rem;
    letter-spacing: -0.02em;
}

/* Social Proof */
.social-proof {
    padding: 6rem 2rem;
    background: #f5f5f7;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.proof-stats {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 8rem;
}

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

.proof-number {
    font-size: 4rem;
    font-weight: 800;
    color: #1d1d1f;
    line-height: 1;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.proof-label {
    font-size: 1rem;
    color: #6e6e73;
    font-weight: 400;
}

/* Features Section - Modern */
.features-modern {
    padding: 12rem 2rem;
    background: #ffffff;
}

.container-modern {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header-modern {
    text-align: center;
    margin-bottom: 8rem;
}

.section-title-modern {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: #1d1d1f;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

.section-subtitle-modern {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: #6e6e73;
    max-width: 650px;
    margin: 0 auto;
    font-weight: 400;
    line-height: 1.6;
}

.features-list-modern {
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

.feature-item-modern {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 5rem;
    align-items: start;
    padding: 4rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}

.feature-item-modern:last-child {
    border-bottom: none;
}

.feature-item-modern:hover {
    transform: translateX(20px);
    border-bottom-color: rgba(52, 199, 89, 0.15);
}

/* Hervorgehobenes Feature */
.feature-item-modern.feature-highlight {
    background: linear-gradient(135deg, rgba(52, 199, 89, 0.08) 0%, rgba(52, 199, 89, 0.02) 100%);
    border-radius: 24px;
    padding: 3rem;
    margin: 2rem 0;
    border: 1px solid rgba(52, 199, 89, 0.15);
    border-bottom: 1px solid rgba(52, 199, 89, 0.15);
}

.feature-item-modern.feature-highlight:hover {
    transform: translateX(0) scale(1.01);
    box-shadow: 0 20px 60px rgba(52, 199, 89, 0.15);
}

.feature-item-modern.feature-highlight .feature-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
}

.feature-item-modern.feature-highlight .feature-number svg {
    width: 32px;
    height: 32px;
}

.feature-badge {
    display: inline-block;
    background: linear-gradient(135deg, #34C759 0%, #30D158 100%);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(52, 199, 89, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(52, 199, 89, 0); }
}

.feature-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: 16px;
    color: #22c55e;
    flex-shrink: 0;
}

.feature-number svg {
    width: 28px;
    height: 28px;
    stroke-width: 1.5;
}

.feature-content-modern {
    flex: 1;
    position: relative;
}

.feature-title-modern {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: #1d1d1f;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.feature-description-modern {
    font-size: clamp(1.125rem, 1.5vw, 1.375rem);
    color: #6e6e73;
    line-height: 1.8;
    max-width: 750px;
    font-weight: 400;
}

/* How It Works - Modern */
.how-it-works-modern {
    padding: 12rem 2rem;
    background: #f5f5f7;
}

.steps-modern {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 6rem;
    margin-top: 6rem;
}

.step-modern {
    text-align: left;
}

.step-number-modern {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 20px;
    color: white;
    margin: 0 auto 2rem;
    box-shadow: 0 8px 24px rgba(34, 197, 94, 0.25);
}

.step-number-modern svg {
    width: 32px;
    height: 32px;
    stroke-width: 1.5;
}

.step-title-modern {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: #1d1d1f;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.step-description-modern {
    font-size: clamp(1.125rem, 1.5vw, 1.375rem);
    color: #6e6e73;
    line-height: 1.8;
    font-weight: 400;
}

/* CTA Section - Modern */
.cta-modern {
    padding: 12rem 2rem;
    background: #1d1d1f;
    color: white;
    text-align: center;
}

.cta-content-modern {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title-modern {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: white;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

.cta-subtitle-modern {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.cta-modern .btn-hero-primary {
    background: white;
    color: #1d1d1f;
}

.cta-modern .btn-hero-primary:hover {
    background: #34C759;
    color: white;
}

.cta-note-modern {
    margin-top: 1.5rem;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Footer - Modern */
.landing-footer-modern {
    padding: 4rem 2rem 2rem;
    background: #ffffff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-content-modern {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

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

.footer-logo-modern {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: #34C759;
    margin-bottom: 1rem;
}

.footer-tagline-modern {
    font-size: 0.9375rem;
    color: #6e6e73;
}

.footer-heading-modern {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1d1d1f;
}

.footer-links-modern {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-column-modern {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link-modern {
    color: #6e6e73;
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

.footer-link-modern:hover {
    color: #34C759;
}

.footer-bottom-modern {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
    color: #6e6e73;
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-modern {
        padding: 10rem 2rem 6rem;
    }
    
    .features-list-modern {
        gap: 3rem;
    }
    
    .feature-item-modern {
        grid-template-columns: 60px 1fr;
        gap: 2rem;
    }
    
    .steps-modern {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-content-modern {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .nav-links.mobile-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-modern {
        padding: 8rem 1.5rem 4rem;
        min-height: auto;
    }
    
    .hero-cta-modern {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-cta-modern .btn-hero-primary,
    .hero-cta-modern .btn-hero-secondary {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    
    .hero-trust {
        flex-direction: column;
        gap: 2rem;
    }
    
    .proof-stats {
        flex-direction: column;
        gap: 3rem;
    }
    
    .features-modern,
    .how-it-works-modern {
        padding: 4rem 1.5rem;
    }
    
    .feature-item-modern {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-number {
        width: 48px;
        height: 48px;
    }
    
    .feature-number svg {
        width: 24px;
        height: 24px;
    }
    
    .footer-links-modern {
        grid-template-columns: 1fr;
    }
}