/* Landing Page Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #22c55e;
    --secondary-color: #16a34a;
    --accent-color: #4ade80;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --background-dark: #0f172a;
    --background-darker: #020617;
    --gradient-primary: linear-gradient(135deg, #22c55e, #16a34a);
    --gradient-secondary: linear-gradient(135deg, #4ade80, #22c55e);
    --gradient-accent: linear-gradient(135deg, #10b981, #059669);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--background-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    cursor: none;
}

/* Custom Cursor */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease;
    mix-blend-mode: difference;
}

/* 3D Background Canvas */
#landing-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

/* Particle System */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--secondary-color);
    border-radius: 50%;
    animation: float 20s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 1s ease, visibility 1s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
}

.loading-logo {
    position: relative;
    margin-bottom: 2rem;
}

.logo-text {
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 2;
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    border: 2px solid transparent;
    border-top: 2px solid var(--secondary-color);
    border-right: 2px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.loading-bar {
    width: 300px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto 1rem;
}

.loading-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
    animation: loading 3s ease-in-out;
}

@keyframes loading {
    0% { width: 0%; }
    100% { width: 100%; }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 1rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Skip Button */
.skip-btn {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 1000;
    transition: all 0.3s ease;
}

.skip-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Main Container */
.landing-container {
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Navigation Dots */
.nav-dots {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.dot.active {
    background: var(--secondary-color);
    box-shadow: 0 0 20px var(--secondary-color);
}

.dot:hover {
    background: var(--text-primary);
    transform: scale(1.2);
}

/* Landing Sections */
.landing-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.landing-section.active {
    opacity: 1;
    transform: translateY(0);
}

.content-wrapper {
    max-width: 1200px;
    width: 100%;
    padding: 0 2rem;
    text-align: center;
}

/* Section 1: Welcome */
.glitch-container {
    margin-bottom: 2rem;
}

.glitch-text {
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: glitch 3s infinite;
}

@keyframes glitch {
    0%, 100% {
        text-shadow: 0 0 0 transparent;
    }
    2% {
        text-shadow: 2px 0 0 #ff0000, -2px 0 0 #00ff00;
        transform: translateX(1px);
    }
    4% {
        text-shadow: -1px 0 0 #ff0000, 1px 0 0 #00ff00;
        transform: translateX(-1px);
    }
    6% {
        text-shadow: 0 0 0 transparent;
        transform: translateX(0);
    }
}

.subtitle-container {
    margin-bottom: 4rem;
}

.animated-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-secondary);
    overflow: hidden;
}

.word {
    display: inline-block;
    margin-right: 0.5rem;
    opacity: 0;
    transform: translateY(20px);
    animation: wordReveal 0.6s ease forwards;
}

.word:nth-child(1) { animation-delay: 0.1s; }
.word:nth-child(2) { animation-delay: 0.2s; }
.word:nth-child(3) { animation-delay: 0.3s; }
.word:nth-child(4) { animation-delay: 0.4s; }
.word:nth-child(5) { animation-delay: 0.5s; }
.word:nth-child(6) { animation-delay: 0.6s; }
.word:nth-child(7) { animation-delay: 0.7s; }
.word:nth-child(8) { animation-delay: 0.8s; }

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

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    position: relative;
    margin: 0 auto 1rem;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) translateY(16px);
        opacity: 0;
    }
}

/* Section 2: Preview Cards */
.section-header {
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.preview-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.preview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.preview-card:hover::before {
    left: 100%;
}

.preview-card:hover {
    transform: translateY(-10px);
    border-color: var(--secondary-color);
    box-shadow: 0 20px 40px rgba(6, 182, 212, 0.2);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
}

.preview-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.preview-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-stats {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 1.1rem;
}

/* Feature Showcase - New Individual Section Layout */
.feature-showcase {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    padding: 3rem;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    max-width: 600px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(34, 197, 94, 0.2);
}

.feature-card .card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
    font-size: 1.1rem;
}

.feature-card .card-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech-tags {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tech-tag {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Card-specific styling */
.research-card .card-icon {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.development-card .card-icon {
    background: linear-gradient(135deg, #4ade80, #22c55e);
}

.leadership-card .card-icon {
    background: linear-gradient(135deg, #10b981, #059669);
}

/* Section 3: Tech Constellation */
.tech-constellation {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.tech-orbit {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.orbit-1 {
    width: 300px;
    height: 300px;
    top: 50px;
    left: 50px;
}

.orbit-2 {
    width: 200px;
    height: 200px;
    top: 100px;
    left: 100px;
    animation-direction: reverse;
    animation-duration: 15s;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tech-node {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: counterRotate 20s linear infinite;
}

.orbit-2 .tech-node {
    animation: counterRotate 15s linear infinite reverse;
}

@keyframes counterRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(-360deg); }
}

.tech-node:hover {
    background: var(--gradient-primary);
    transform: scale(1.2);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.tech-node span {
    font-size: 0.7rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

.orbit-1 .tech-node:nth-child(1) { top: -30px; left: 120px; }
.orbit-1 .tech-node:nth-child(2) { top: 120px; right: -30px; }
.orbit-1 .tech-node:nth-child(3) { bottom: -30px; left: 120px; }

.orbit-2 .tech-node:nth-child(1) { top: -30px; left: 70px; }
.orbit-2 .tech-node:nth-child(2) { top: 70px; right: -30px; }
.orbit-2 .tech-node:nth-child(3) { bottom: -30px; left: 70px; }

.tech-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
    animation: pulse 3s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
    }
    50% {
        box-shadow: 0 0 50px rgba(139, 92, 246, 0.8);
    }
}

/* Section 4: Enter Portfolio */
.enter-buttons {
    margin-bottom: 3rem;
}

.enter-btn {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    padding: 1.5rem 3rem;
    border-radius: 3rem;
    font-size: 1.2rem;
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.enter-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.3);
}

.btn-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.quick-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.quick-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 1rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    min-width: 100px;
}

.quick-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.quick-link i {
    font-size: 1.5rem;
}

.social-preview {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-dots {
        right: 1rem;
    }
    
    .skip-btn {
        top: 1rem;
        right: 1rem;
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .content-wrapper {
        padding: 0 1rem;
    }
    
    .glitch-text {
        font-size: clamp(2rem, 12vw, 4rem);
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .preview-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-card {
        padding: 2rem;
        margin: 0 1rem;
    }
    
    .feature-card h3 {
        font-size: 1.5rem;
    }
    
    .feature-card p {
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .card-stats {
        gap: 1rem;
    }
    
    .tech-constellation {
        width: 300px;
        height: 300px;
    }
    
    .orbit-1 {
        width: 250px;
        height: 250px;
        top: 25px;
        left: 25px;
    }
    
    .orbit-2 {
        width: 150px;
        height: 150px;
        top: 75px;
        left: 75px;
    }
    
    .quick-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .quick-link {
        flex-direction: row;
        min-width: 200px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #ffffff;
        --background-dark: #000000;
    }
}