:root {
    --primary: #8C52FF;
    --secondary: #5CE5D5;
    --accent: #FF7D54;
    --dark: #28293E;
    --light: #F8F9FD;
    --gray: #A0A3BD;
    --gradient: linear-gradient(120deg, var(--primary), #7038E0);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.7;
    overflow-x: hidden;
}

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

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1000;
    transition: all 0.3s ease;
    background-color: rgba(248, 249, 253, 0.95);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    z-index: 1001; /* Damit das Logo über dem mobilen Menü bleibt */
}

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

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

.nav-link {
    font-weight: 600;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

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

.btn {
    display: inline-block;
    background: var(--gradient);
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(140, 82, 255, 0.3);
}

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

.btn-outlined:hover {
    background: var(--gradient);
    color: white;
}

.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 30px;
    position: relative;
    z-index: 1001;
}

.mobile-nav-toggle span {
    display: block;
    width: 30px;
    height: 2px;
    margin-bottom: 5px;
    position: relative;
    background: var(--primary);
    border-radius: 3px;
    transform-origin: center;
    transition: all 0.3s ease;
}

.mobile-nav-toggle span:last-child {
    margin-bottom: 0;
}

.mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-blob-1 {
    position: absolute;
    top: -15%;
    right: -10%;
    width: 60%;
    height: 70%;
    background: rgba(140, 82, 255, 0.05);
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    animation: blob-move 20s infinite alternate ease-in-out;
}

.hero-blob-2 {
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 50%;
    height: 60%;
    background: rgba(92, 229, 213, 0.05);
    border-radius: 50% 50% 70% 30% / 30% 40% 60% 70%;
    animation: blob-move 15s infinite alternate-reverse ease-in-out;
}

@keyframes blob-move {
    0% {
        transform: rotate(0deg) translate(0, 0);
    }
    100% {
        transform: rotate(20deg) translate(40px, 40px);
    }
}

.hero-content {
    width: 50%;
    padding-right: 3rem;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

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

.stat-label {
    font-size: 1rem;
    color: var(--gray);
    font-weight: 500;
}

.hero-image {
    width: 50%;
    position: relative;
}

.app-mockup {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    perspective: 1000px;
    z-index: 10;
}

.phone-main {
    width: 300px;
    transform: rotateY(-15deg) translateZ(0);
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 30px 50px 100px rgba(40, 41, 62, 0.2);
}

.phone-secondary {
    position: absolute;
    width: 280px;
    right: -60px;
    top: 60px;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(40, 41, 62, 0.15);
    z-index: -1;
    transform: rotateY(-5deg) translateZ(-100px);
}

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

/* Features Section */
.features {
    padding: 8rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 5rem;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--gray);
}

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

.feature-card {
    background: white;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 15px 40px rgba(40, 41, 62, 0.05);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(40, 41, 62, 0.1);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 20px;
    margin-bottom: 2rem;
}

.icon-timer {
    background: rgba(140, 82, 255, 0.1);
    color: var(--primary);
}

.icon-cards {
    background: rgba(92, 229, 213, 0.1);
    color: var(--secondary);
}

.icon-grades {
    background: rgba(255, 125, 84, 0.1);
    color: var(--accent);
}

.icon-schedule {
    background: rgba(140, 82, 255, 0.1);
    color: var(--primary);
}

.icon-exams {
    background: rgba(92, 229, 213, 0.1);
    color: var(--secondary);
}

.icon-attendance {
    background: rgba(255, 125, 84, 0.1);
    color: var(--accent);
}

.feature-icon i {
    font-size: 2.5rem;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.feature-desc {
    color: var(--gray);
    margin-bottom: 0;
}

/* How It Works */
.how-it-works {
    padding: 8rem 0;
    background: var(--dark);
    color: white;
    position: relative;
    overflow: hidden;
}

.how-it-works .section-title {
    color: white;
}

.how-it-works .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.steps-container {
    display: flex;
    justify-content: space-between;
    margin-top: 5rem;
    position: relative;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
    width: 25%;
}

.step-number {
    background: var(--gradient);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: white;
    box-shadow: 0 15px 30px rgba(140, 82, 255, 0.3);
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step-desc {
    color: rgba(255, 255, 255, 0.7);
}

/* Screenshots */
.screenshots {
    padding: 8rem 0;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.screenshot-item {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(40, 41, 62, 0.1);
    transition: all 0.3s ease;
    aspect-ratio: 9/16;
}

.screenshot-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 60px rgba(40, 41, 62, 0.15);
}

.screenshot-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Premium */
.premium {
    padding: 8rem 0;
    background: linear-gradient(135deg, rgba(140, 82, 255, 0.05), rgba(92, 229, 213, 0.05));
    position: relative;
    overflow: hidden;
}

.premium-content {
    display: flex;
    align-items: center;
    gap: 5rem;
}

.premium-info {
    width: 50%;
}

.premium-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.premium-subtitle {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 2.5rem;
}

.premium-features {
    margin-bottom: 3rem;
}

.premium-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.premium-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    flex-shrink: 0;
}

.premium-image {
    width: 50%;
    position: relative;
}

.premium-card {
    background: white;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 30px 60px rgba(40, 41, 62, 0.1);
    position: relative;
    width: 100%;
    max-width: 500px;
    overflow: hidden;
}

.premium-card::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--gradient);
    top: -200px;
    right: -200px;
    border-radius: 50%;
    opacity: 0.05;
}

.premium-card-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary);
}

.premium-price {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
}

.premium-price span {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--gray);
}

.premium-list {
    list-style: none;
    margin-bottom: 2.5rem;
}

.premium-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.premium-list i {
    color: var(--primary);
}

.premium-card .btn {
    width: 100%;
    padding: 1rem;
    text-align: center;
    font-size: 1.1rem;
}

/* Call to Action */
.cta {
    background: var(--dark);
    padding: 8rem 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-blob {
    position: absolute;
    width: 800px;
    height: 800px;
    background: var(--gradient);
    border-radius: 52% 48% 48% 52% / 53% 59% 41% 47%;
    opacity: 0.05;
    top: -400px;
    right: -200px;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 10;
}

.cta-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.cta-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 3rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* Footer */
.footer {
    padding: 5rem 0 2rem;
    background: white;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4rem;
}

.footer-column {
    flex: 1;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.footer-logo span {
    color: var(--dark);
}

.footer-desc {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--light);
    color: var(--gray);
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--primary);
    color: white;
}

.footer-heading {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--gray);
    transition: all 0.3s ease;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
    color: var(--gray);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .app-mockup {
        scale: 0.9;
    }
}

@media (max-width: 992px) {
    .hero {
        padding: 10rem 0 5rem;
        min-height: auto;
        text-align: center;
    }
    
    .hero-content, .hero-image, 
    .premium-info, .premium-image {
        width: 100%;
    }
    
    .hero .container, .premium-content {
        flex-direction: column;
    }
    
    .hero-content {
        margin-bottom: 4rem;
        padding-right: 0;
    }
    
    .hero-buttons, .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-container {
        flex-direction: column;
        gap: 3rem;
        align-items: center;
    }
    
    .steps-container::before {
        display: none;
    }
    
    .step {
        width: 100%;
        max-width: 350px;
    }
    
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .premium-info {
        text-align: center;
        margin-bottom: 3rem;
    }
    
    .premium-feature {
        justify-content: center;
    }
    
    .premium-card {
        margin: 0 auto;
    }
    
    .footer-container {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .footer-column {
        flex: 0 0 calc(50% - 1rem);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title, .premium-title, .cta-title {
        font-size: 2.5rem;
    }
    
    .features-grid, .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .app-mockup {
        scale: 0.8;
    }
    
    .phone-main {
        width: 280px;
    }
    
    .phone-secondary {
        width: 260px;
        right: -40px;
    }
    
    .footer-column {
        flex: 0 0 100%;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    
    .hero-buttons, .cta-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .feature-card, .premium-card {
        padding: 2rem;
    }
    
    .section-title, .premium-title, .cta-title {
        font-size: 2rem;
    }
}

@media (max-width: 992px) {
    .mobile-nav-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 250px;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: all 0.5s ease;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        padding: 2rem;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-link::after {
        bottom: -3px;
    }
}

@media (max-width: 576px) {
    .logo {
        font-size: 1.4rem;
    }
    
    nav {
        padding: 0.8rem 0;
    }
    
    .nav-links {
        width: 100%;
        padding-top: 6rem;
    }
}