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

:root {
    --bg-dark: #0a0a0f;
    --bg-card: #1a1a2e;
    --accent-primary: #00d4ff;
    --accent-secondary: #7000ff;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --gradient-1: linear-gradient(135deg, #00d4ff, #7000ff);
    --gradient-2: linear-gradient(135deg, #7000ff, #00d4ff);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.container {
    position: relative;
    z-index: 1;
}

/* Navigation */
header {
    padding: 2rem 5%;
    position: sticky;
    top: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
    z-index: 101;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 101;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--accent-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}

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

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

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem 5%;
}

.hero-content {
    max-width: 800px;
}

.glitch {
    font-size: clamp(4rem, 15vw, 8rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    position: relative;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 20px var(--accent-primary),
                     0 0 40px var(--accent-primary),
                     0 0 60px var(--accent-primary);
    }
    to {
        text-shadow: 0 0 30px var(--accent-secondary),
                     0 0 50px var(--accent-secondary),
                     0 0 80px var(--accent-secondary);
    }
}

.subtitle {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 300;
    margin-bottom: 0.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle-secondary {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 300;
}

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

.btn {
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--text-primary);
    border: none;
}

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

.btn-secondary:hover {
    background: var(--accent-primary);
    color: var(--bg-dark);
}

/* About Section */
.about {
    padding: 8rem 5%;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.section-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    text-align: center;
    margin-bottom: 4rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 900px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.about-card {
    background: var(--bg-card);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0;
    transition: all 0.5s ease;
}

.about-card:hover::before {
    left: 0;
    opacity: 0.1;
}

.about-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

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

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Skills Section */
.skills {
    padding: 8rem 5%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(26, 26, 46, 0.3) 100%);
}

.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tech-category {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.tech-category:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
    transform: translateY(-5px);
}

.tech-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
    text-align: center;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
}

.tech-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 0.9rem;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s ease;
    cursor: default;
}

.tech-tag:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

/* Experience Section */
.experience {
    padding: 8rem 5%;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.experience-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.experience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-2);
    opacity: 0;
    transition: all 0.5s ease;
}

.experience-card:hover::before {
    left: 0;
    opacity: 0.1;
}

.experience-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-secondary);
    box-shadow: 0 10px 40px rgba(112, 0, 255, 0.3);
}

.exp-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.experience-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.experience-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* Speaking Section */
.speaking {
    padding: 8rem 5%;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(26, 26, 46, 0.3) 100%);
}

.speaking-list {
    max-width: 800px;
    margin: 0 auto;
}

.speaking-item {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    gap: 2rem;
    align-items: center;
    transition: all 0.3s ease;
}

.speaking-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(10px);
    box-shadow: 0 5px 30px rgba(0, 212, 255, 0.2);
}

.year {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 80px;
}

.talk-details h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.talk-details p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Contact Section */
.contact {
    padding: 8rem 5%;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.contact-text {
    text-align: center;
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.contact-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-btn {
    padding: 1.2rem 3rem;
    background: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    transition: left 0.5s ease;
    z-index: -1;
}

.contact-btn:hover::before {
    left: 0;
}

.contact-btn:hover {
    border-color: var(--accent-primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        padding: 1rem 5%;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        background: rgba(26, 26, 46, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.3s ease;
        padding: 2rem;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        font-size: 1.2rem;
        display: block;
        padding: 1rem;
    }

    .logo {
        font-size: 1.3rem;
    }

    .hero {
        min-height: 80vh;
        padding: 2rem 5%;
    }

    .tagline {
        font-size: 1rem;
        margin-bottom: 2rem;
        padding: 0 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        padding: 0.9rem 2rem;
    }

    .about, .skills, .experience, .contact {
        padding: 4rem 5%;
    }

    .speaking {
        padding: 4rem 5%;
    }

    .section-title {
        margin-bottom: 2.5rem;
    }

    .about-intro {
        font-size: 1rem;
        margin-bottom: 2.5rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-card {
        padding: 2rem 1.5rem;
    }

    .tech-categories {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .tech-category {
        padding: 2rem 1.5rem;
    }

    .experience-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .experience-card {
        padding: 2rem 1.5rem;
    }

    .speaking-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
        padding: 1.5rem;
    }

    .year {
        min-width: auto;
        font-size: 1.5rem;
    }

    .talk-details h3 {
        font-size: 1.1rem;
    }

    .talk-details p {
        font-size: 0.9rem;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .contact-btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    .contact-text {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.1rem;
        letter-spacing: 1px;
    }

    .hero {
        min-height: 75vh;
    }

    .tagline {
        font-size: 0.95rem;
    }

    .about-card, .tech-category, .experience-card {
        padding: 1.5rem 1rem;
    }

    .card-icon, .exp-icon {
        font-size: 2.5rem;
    }

    .tech-tag {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 1024px) {
    .experience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: var(--bg-dark);
}