/* Core Variables & Reset */
:root {
    --bg-color: #0a0a0a;
    --surface-color: #171717;
    --surface-hover: #262626;
    --text-primary: #ededed;
    --text-secondary: #a1a1aa;
    --accent-color: #3b82f6;
    /* Blue-500 */
    --accent-glow: rgba(59, 130, 246, 0.5);
    --border-color: #333;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.25), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(147, 51, 234, 0.25), transparent 25%),
        radial-gradient(circle at 50% 90%, rgba(59, 130, 246, 0.15), transparent 40%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--accent-color);
}

ul {
    list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, var(--accent-color), #2563eb);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 992px) {
    .about-grid {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.about-extra {
    display: flex;
    justify-content: center;
    align-items: center;
}

.quote-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: 2.5rem;
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s, border-color 0.3s;
    max-width: 400px;
}

.quote-box:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.quote-box::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 5rem;
    color: var(--accent-color);
    opacity: 0.3;
    font-family: serif;
    line-height: 1;
}

.quote-text {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 500;
}

.quote-author {
    text-align: right;
    font-size: 1rem;
    color: var(--accent-color);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.skills-container {
    margin-top: 2rem;
}

.skill-category {
    margin-bottom: 2rem;
}

.skill-category h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

@media (min-width: 768px) {
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 2rem;
    }
}

.skill-card {
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 1.5rem;
    transition: transform 0.3s, border-color 0.3s;
}

.skill-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.skill-card-fill {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.2), rgba(147, 51, 234, 0.2));
    z-index: 0;
    transition: width 1.5s cubic-bezier(0.22, 1, 0.36, 1);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-content {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.skill-percentage {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-color);
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 8px;
    border-radius: 12px;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    }
}

.project-card {
    background: rgba(23, 23, 23, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    position: relative;
}

.project-card::before {
    content: '';
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #222;
}

.project-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-year {
    font-size: 0.8rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-desc {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.link-btn {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    border-bottom: 1px solid transparent;
}

.link-btn:hover {
    border-bottom-color: var(--accent-color);
}

/* Open Source Section */
.contribution-card {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    border-left: 2px solid var(--text-secondary);
}


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

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-icon:hover {
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.4);
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.social-icon svg {
    width: 24px;
    height: 24px;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}.about-extra-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
}

.location-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: transform 0.3s, border-color 0.3s;
    backdrop-filter: blur(10px);
}

.location-box:hover {
    transform: translateX(5px);
    border-color: var(--accent-color);
}

.location-icon {
    color: var(--accent-color);
    flex-shrink: 0;
}

.location-text {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
}