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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 140, 66, 0.8) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 107, 26, 0.7) 0%, transparent 50%),
        radial-gradient(circle at 40% 70%, rgba(236, 72, 153, 0.6) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.5) 0%, transparent 50%),
        radial-gradient(circle at 10% 90%, rgba(217, 70, 239, 0.6) 0%, transparent 50%),
        linear-gradient(135deg, 
            rgba(255, 140, 66, 0.3) 0%, 
            rgba(255, 107, 26, 0.4) 25%, 
            rgba(236, 72, 153, 0.3) 50%, 
            rgba(168, 85, 247, 0.3) 75%, 
            rgba(217, 70, 239, 0.3) 100%
        );
    background-attachment: fixed;
    min-height: 100vh;
}

.orange {
    color: #ff8c42;
}

/* Navigation */
.navbar {
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    color: #ff8c42;
    font-weight: 700;
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: #ff8c42;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffb366;
}

/* Toggle Section */
.toggle-section {
    padding-top: 100px;
    padding-bottom: 30px;
    display: flex;
    justify-content: center;
}

.nav-toggle {
    display: flex;
    align-items: center;
    gap: 15px;
}

.toggle-label {
    font-weight: 600;
    font-style: italic;
    color: #666;
    transition: color 0.3s ease;
    cursor: pointer;
    font-size: 1.1rem;
}

.toggle-label.active {
    color: #333;
}

.toggle-switch {
    width: 70px;
    height: 35px;
    background: #4CAF50;
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s ease;
}

.toggle-switch.university-mode {
    background: #4CAF50;
}

.toggle-slider {
    width: 31px;
    height: 31px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch.university-mode .toggle-slider {
    transform: translateX(35px);
}

/* Hero Section */
.hero-simple {
    max-width: 98%;
    margin: 0 auto;
    padding: 40px 10px;
    text-align: center;
}

.hero-box {
    background: white;
    border: 3px solid #ff8c42;
    border-radius: 20px;
    padding: 60px 50px;
    margin-bottom: 30px;
}

.hero-text-only {
    margin-bottom: 100px;
    text-align: center;
}

.hero-text-only h2 {
    font-size: 3.5rem;
    font-weight: 600;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.orange-text {
    color: #ffffff;
}

.white-text {
    color: #ffffff;
}

.hero-box h2 {
    font-size: 3.5rem;
    font-weight: 600;
    line-height: 1.3;
    color: #333;
}

.hero-text-only h2 {
    font-size: 6rem;
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-main-line {
    font-size: 12rem;
    display: block;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 10px;
    white-space: nowrap;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-secondary-line {
    font-size: 4rem;
    display: block;
    font-weight: 600;
    line-height: 1.2;
    margin-top: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-main {
    font-size: 5rem;
    display: inline-block;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.orange-text {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.white-text {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.demo-button {
    background: #ff8c42;
    border: 2px solid #ff8c42;
    color: white;
    padding: 15px 40px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 100px;
    font-size: 1.2rem;
}

.demo-button:hover {
    transform: scale(1.1);
}

/* Wave Container */
.wave-container {
    width: 100%;
    height: 120px;
    margin: 50px 0;
    position: relative;
    overflow: hidden;
}

.wave-line {
    position: absolute;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 140, 66, 0.8) 20%, 
        rgba(255, 107, 26, 1) 40%, 
        rgba(236, 72, 153, 0.9) 60%, 
        rgba(168, 85, 247, 0.7) 80%, 
        transparent 100%
    );
}

.wave1 {
    top: 35%;
    height: 6px;
    animation: flowingWave1 8s ease-in-out infinite;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 140, 66, 0.9) 25%, 
        rgba(255, 107, 26, 1) 50%, 
        rgba(255, 140, 66, 0.9) 75%, 
        transparent 100%
    );
}

.wave2 {
    top: 45%;
    height: 4px;
    animation: flowingWave2 10s ease-in-out infinite;
    animation-delay: -2s;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 107, 26, 0.8) 25%, 
        rgba(236, 72, 153, 1) 50%, 
        rgba(255, 107, 26, 0.8) 75%, 
        transparent 100%
    );
}

.wave3 {
    top: 55%;
    height: 5px;
    animation: flowingWave3 12s ease-in-out infinite;
    animation-delay: -4s;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(236, 72, 153, 0.7) 25%, 
        rgba(168, 85, 247, 1) 50%, 
        rgba(236, 72, 153, 0.7) 75%, 
        transparent 100%
    );
}

.wave4 {
    top: 65%;
    height: 3px;
    animation: flowingWave4 14s ease-in-out infinite;
    animation-delay: -6s;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(168, 85, 247, 0.6) 25%, 
        rgba(217, 70, 239, 1) 50%, 
        rgba(168, 85, 247, 0.6) 75%, 
        transparent 100%
    );
}

@keyframes flowingWave1 {
    0%, 100% {
        transform: translateX(-100%) scaleX(0.8) skewX(0deg);
        opacity: 0;
    }
    25% {
        transform: translateX(-25%) scaleX(1.2) skewX(5deg);
        opacity: 0.8;
    }
    50% {
        transform: translateX(0%) scaleX(1.5) skewX(-3deg);
        opacity: 1;
    }
    75% {
        transform: translateX(25%) scaleX(1.1) skewX(2deg);
        opacity: 0.9;
    }
}

@keyframes flowingWave2 {
    0%, 100% {
        transform: translateX(-120%) scaleX(0.6) skewX(0deg);
        opacity: 0;
    }
    30% {
        transform: translateX(-30%) scaleX(1.3) skewX(-4deg);
        opacity: 0.7;
    }
    60% {
        transform: translateX(10%) scaleX(1.6) skewX(6deg);
        opacity: 1;
    }
    80% {
        transform: translateX(40%) scaleX(0.9) skewX(-2deg);
        opacity: 0.8;
    }
}

@keyframes flowingWave3 {
    0%, 100% {
        transform: translateX(-110%) scaleX(0.7) skewX(0deg);
        opacity: 0;
    }
    20% {
        transform: translateX(-40%) scaleX(1.1) skewX(3deg);
        opacity: 0.6;
    }
    45% {
        transform: translateX(-5%) scaleX(1.4) skewX(-5deg);
        opacity: 0.9;
    }
    70% {
        transform: translateX(20%) scaleX(1.7) skewX(4deg);
        opacity: 1;
    }
    90% {
        transform: translateX(50%) scaleX(0.8) skewX(-1deg);
        opacity: 0.7;
    }
}

@keyframes flowingWave4 {
    0%, 100% {
        transform: translateX(-130%) scaleX(0.5) skewX(0deg);
        opacity: 0;
    }
    35% {
        transform: translateX(-35%) scaleX(1.0) skewX(-6deg);
        opacity: 0.5;
    }
    55% {
        transform: translateX(-10%) scaleX(1.3) skewX(7deg);
        opacity: 0.8;
    }
    75% {
        transform: translateX(15%) scaleX(1.8) skewX(-3deg);
        opacity: 1;
    }
    85% {
        transform: translateX(35%) scaleX(1.2) skewX(2deg);
        opacity: 0.9;
    }
}

/* Description Section */
.description-section {
    max-width: 1100px;
    margin: 80px auto 60px;
    padding: 0 20px;
    text-align: center;
}

.main-description {
    font-size: 3rem;
    line-height: 1.6;
    color: #ffffff;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.main-description .orange {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.arrow-down {
    margin: 30px auto 0;
    width: 80px;
    height: 80px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.arrow-down::before {
    content: '';
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-right: 40px solid transparent;
    border-top: 50px solid #ff8c42;
    position: relative;
    filter: drop-shadow(0 4px 8px rgba(255, 140, 66, 0.3));
}

.arrow-down::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0;
    height: 0;
    border-left: 35px solid transparent;
    border-right: 35px solid transparent;
    border-top: 45px solid #ff6b1a;
}

/* Features List */
.features-list {
    max-width: 1600px;
    margin: 0 auto;
    padding: 40px 20px 100px;
}

.feature-item {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 80px;
    background: rgba(255, 140, 66, 0.25);
    padding: 50px 60px;
    border-radius: 20px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 140, 66, 0.4);
}

/* University content - with animations */
#universityContent .feature-item {
    display: grid;
    grid-template-columns: 600px 1fr;
    gap: 80px;
}

#universityContent .feature-item.reverse {
    grid-template-columns: 1fr 600px;
}

#universityContent .feature-item.reverse .feature-animation {
    order: 2;
}

#universityContent .feature-item.reverse .feature-text {
    order: 1;
}

#universityContent .feature-item.align-right {
    justify-content: flex-start;
    margin-left: 0;
}

#universityContent .feature-item.align-right .feature-text {
    text-align: right;
    margin-left: 0;
    padding-left: 0;
    padding-right: 40px;
}

#universityContent .feature-item.reverse .feature-text {
    text-align: left;
    margin-right: 0;
    padding-right: 0;
    padding-left: 40px;
}

#universityContent .feature-item.reverse {
    justify-content: flex-end;
    margin-right: 0;
}

/* Student content - with animations */
#studentContent .feature-item {
    display: grid;
    grid-template-columns: 600px 1fr;
    gap: 80px;
}

#studentContent .feature-item.reverse {
    grid-template-columns: 1fr 600px;
}

#studentContent .feature-item.reverse .feature-animation {
    order: 2;
}

#studentContent .feature-item.reverse .feature-text {
    order: 1;
    text-align: left;
}

#studentContent .feature-item.align-right {
    justify-content: flex-start;
    margin-left: 0;
}

#studentContent .feature-item.align-right .feature-text {
    text-align: right;
    margin-left: 0;
    padding-left: 0;
    padding-right: 40px;
}

#studentContent .feature-item.reverse {
    justify-content: flex-end;
    margin-right: 0;
}

#studentContent .feature-item.reverse .feature-text {
    text-align: left;
    margin-right: 0;
    padding-right: 0;
    padding-left: 40px;
}

.feature-animation {
    width: 600px;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.code-animation {
    width: 100%;
    height: 100%;
    border-radius: 15px;
}

.feature-item.align-right .feature-animation {
    justify-self: start;
}

.feature-item.reverse .feature-animation {
    justify-self: end;
}

.feature-text h3 {
    font-size: 2.8rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 15px;
    color: #ffffff;
    max-width: 800px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.feature-text h3 .orange {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.feature-text p {
    font-size: 1.3rem;
    color: #ffffff;
    line-height: 1.5;
    max-width: 800px;
}

.feature-text .small-text {
    font-size: 1.1rem;
    color: #ffffff;
    line-height: 1.6;
    margin-top: 10px;
}

/* Content Sections */
.content-section {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }
    
    .nav-brand h1 {
        font-size: 1.5rem;
    }
    
    .nav-menu {
        gap: 15px;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
    
    .hero-box h2 {
        font-size: 1.5rem;
    }
    
    .feature-item {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 30px 20px;
    }
    
    .feature-item.reverse {
        grid-template-columns: 1fr;
    }
    
    .feature-item.reverse .feature-animation {
        order: 1;
    }
    
    .feature-item.reverse .feature-text {
        order: 2;
    }
    
    .feature-animation {
        width: 100%;
        height: 120px;
    }
    
    .main-description {
        font-size: 1.1rem;
    }
    
    .feature-text h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .toggle-label {
        font-size: 0.9rem;
    }
    
    .toggle-switch {
        width: 60px;
        height: 30px;
    }
    
    .toggle-slider {
        width: 26px;
        height: 26px;
    }
    
    .toggle-switch.university-mode .toggle-slider {
        transform: translateX(30px);
    }
    
    .hero-box {
        padding: 30px 20px;
    }
    
    .hero-box h2 {
        font-size: 1.3rem;
    }
}

/* Scroll animation */
.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Footer Section */
.footer-section {
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 60px 40px 30px;
    margin-top: 100px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: #ff8c42;
    font-size: 5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.footer-column h4 {
    color: #ffffff;
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-column p {
    color: #b0b0b0;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 8px;
}

.footer-column:first-child p {
    max-width: 350px;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    color: #888;
    font-size: 0.9rem;
}

.footer-link {
    color: #ff8c42;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #ffb366;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-section {
        padding: 40px 20px 20px;
    }
}