:root {
    --bg-color: #0d0e12;
    --card-bg: rgba(255, 255, 255, 0.05);
    --accent-blue: #00d2ff;
    --accent-purple: #9d50bb;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0d0e12 0%, #1a1c24 100%);
    background-image: url('portfolio_background.png');
    background-size: cover;
    background-position: center;
    filter: brightness(0.4);
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: rgba(13, 14, 18, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

nav a:hover,
nav a.active {
    color: var(--text-primary);
}

section {
    padding: 60px 10%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero {
    min-height: 80vh;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    text-align: center;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.subtitle {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s 0.2s forwards;
}

.contact-strip {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 0.8s 0.3s forwards;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s 0.4s forwards;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-tag {
    padding: 0.8rem;
    text-align: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    font-weight: 600;
    transition: var(--transition);
}

.skill-tag:hover {
    background: rgba(0, 210, 255, 0.1);
    border-color: var(--accent-blue);
    transform: translateY(-3px);
}

/* Experience Styles */
.experience-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.exp-card {
    text-align: left;
}

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.exp-header h3 {
    color: var(--accent-blue);
}

.company {
    font-style: italic;
    color: var(--text-secondary);
}

.exp-card ul {
    list-style: none;
    padding-left: 0;
}

.exp-card ul li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.exp-card ul li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent-purple);
}

/* Education & Projects */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.additional-projects {
    margin-top: 3rem;
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--glass-border);
}

.additional-projects h3 {
    margin-bottom: 1rem;
    color: var(--accent-purple);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card h3 {
    margin-bottom: 0.5rem;
    color: var(--accent-blue);
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

input,
textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: white;
    outline: none;
    transition: var(--transition);
}

input:focus,
textarea:focus {
    border-color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.08);
}

button {
    padding: 1rem 2rem;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    border: none;
    border-radius: 10px;
    color: white;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

button:hover {
    transform: scale(1.02);
    filter: brightness(1.1);
}

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

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    header {
        padding: 1rem 5%;
    }

    nav ul {
        gap: 1rem;
    }
}