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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    overflow-x: hidden;
    transition: background-color 0.4s, color 0.4s;
}

body.dark-theme {
    background-color: #0a0a0a;
    color: #ffffff;
}

body.light-theme {
    background-color: #f5f5f5;
    color: #1a1a1a;
}

#canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}

.nav-container {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    z-index: 30;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-nav {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark-theme .glass-nav {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.light-theme .glass-nav {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    background: transparent;
}

.dark-theme .nav-btn {
    color: #ffffff;
}

.light-theme .nav-btn {
    color: #1a1a1a;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    50%, 100% { left: 100%; }
}

.nav-btn.active {
    background: rgba(255, 255, 255, 0.2);
}

.dark-theme .nav-btn.active {
    background: rgba(255, 255, 255, 0.15);
}

.light-theme .nav-btn.active {
    background: rgba(0, 0, 0, 0.1);
}

.glass-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s;
}

.dark-theme .glass-btn {
    background: rgba(0, 0, 0, 0.4);
    color: #ffffff;
}

.light-theme .glass-btn {
    background: rgba(255, 255, 255, 0.6);
    color: #1a1a1a;
}

.glass-btn:hover {
    transform: scale(1.05);
}

#scrollContainer {
    height: 600vh;
    width: 1px;
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

.content-section {
    min-height: 100vh;
    padding: 2rem;
    opacity: 1;
    transition: opacity 0.5s;
}

.content-section.hidden {
    display: none;
    opacity: 0;
}

.vertical-cards {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 20vh;
    display: flex;
    flex-direction: column;
    gap: 40vh;
}

.info-card {
    padding: 3rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.dark-theme .info-card {
    background: rgba(0, 0, 0, 0.3);
}

.light-theme .info-card {
    background: rgba(255, 255, 255, 0.7);
}

.horizontal-scroll-wrapper {
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.horizontal-scroll-content {
    display: flex;
    gap: 4rem;
    padding: 2rem;
    align-items: center;
    height: 100%;
}

.project-card {
    min-width: 600px;
    padding: 3rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.dark-theme .project-card {
    background: rgba(0, 0, 0, 0.3);
}

.light-theme .project-card {
    background: rgba(255, 255, 255, 0.7);
}

.about-overlay {
    max-width: 800px;
    margin: 0 auto;
    padding-top: 30vh;
}

#loader {
    transition: opacity 0.5s;
}

#loader.hidden {
    opacity: 0;
    pointer-events: none;
}