/* --- CSS Variables & Reset --- */
:root {
    --bg-primary: #0a0d14;
    --bg-secondary: #121824;
    --bg-card: rgba(18, 24, 36, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(99, 102, 241, 0.4);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --accent-glow: rgba(99, 102, 241, 0.25);
    
    --font-sans: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Ambient Background Glows */
.ambient-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}
.glow-1 {
    top: -100px;
    left: -100px;
    background: var(--accent-primary);
}
.glow-2 {
    top: 40%;
    right: -150px;
    background: var(--accent-secondary);
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 6rem 0;
}

/* Typography & Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f472b6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}
.btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 13, 20, 0.8);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo span {
    color: var(--accent-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link.contact-btn {
    background: rgba(99, 102, 241, 0.1);
    color: #818cf8;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(99, 102, 241, 0.2);
}
.nav-link.contact-btn:hover {
    background: var(--accent-primary);
    color: white;
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}
.bar {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 8rem;
    padding-bottom: 4rem;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #818cf8;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size.clamp: 2.5rem;
    font-size: clamp(2.5rem, 4vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.hero-socials {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}
.social-icon:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* Code Card Visual */
.hero-visual {
    position: relative;
}

.card-glow-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(168, 85, 247, 0.1));
    padding: 2px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.code-card {
    background: #0f172a;
    border-radius: calc(var(--radius-lg) - 2px);
    overflow: hidden;
    font-family: 'Fira Code', monospace, sans-serif;
}

.card-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.filename {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.code-card pre {
    padding: 1.5rem;
    overflow-x: auto;
}

.code-card code {
    font-size: 0.9rem;
    color: #e2e8f0;
    line-height: 1.7;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-primary);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.underline {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.about-paragraphs {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}
.metric-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: #818cf8;
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pillars-title, .strengths-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.pillars-stack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pillar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}
.pillar-card:hover {
    border-color: var(--border-hover);
}

.pillar-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}
.pillar-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.strengths-container {
    margin-top: 4rem;
}
.strengths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem;
}

.strength-badge {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
}
.strength-badge:hover {
    background: rgba(99, 102, 241, 0.05);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}
.strength-badge i {
    color: var(--accent-primary);
}

/* Education Section (Timeline) */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 30px;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 3rem;
}
.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 21px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 4px solid var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}
.timeline-content:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.timeline-date {
    background: rgba(99, 102, 241, 0.1);
    color: #818cf8;
    padding: 0.3rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.timeline-subtitle {
    font-size: 1.05rem;
    color: var(--accent-secondary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-details {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.timeline-details li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.timeline-details li::before {
    content: '•';
    color: var(--accent-primary);
    font-weight: bold;
}

/* Skills Section */
.skills-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 2rem;
}

.skill-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}
.skill-category-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
}

.skill-category-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.skill-category-title i {
    color: var(--accent-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
}
.skill-tag:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent-primary);
    color: #818cf8;
    transform: translateY(-2px);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}
.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.project-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.project-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tag {
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(99, 102, 241, 0.1);
    color: #818cf8;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.project-links {
    display: flex;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}
.project-link:hover {
    color: var(--accent-primary);
}

/* Contact Section */
.contact-card-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    backdrop-filter: blur(16px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-icon-box {
    width: 60px;
    height: 60px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #818cf8;
    margin-bottom: 1.25rem;
}

.contact-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.contact-info p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    word-break: break-all;
}

.contact-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-socials-box {
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 1px solid var(--border-color);
    padding-left: 3rem;
}

.contact-socials-box h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.contact-socials-box p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.social-links-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.social-link-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}
.social-link-item:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-primary);
    transform: translateX(4px);
    color: #818cf8;
}
.social-link-item i {
    font-size: 1.25rem;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    background: var(--bg-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.back-to-top {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}
.back-to-top:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* Responsive Media Queries */
@media (max-width: 968px) {
    .hero-container, .about-grid, .contact-card {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .contact-socials-box {
        border-left: none;
        border-top: 1px solid var(--border-color);
        padding-left: 0;
        padding-top: 2rem;
    }
    .hero-visual {
        max-width: 600px;
        margin: 0 auto;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background: #0f172a;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
        transition: var(--transition);
        z-index: 1001;
    }
    .nav-menu.active {
        right: 0;
    }
    .hamburger {
        display: flex;
        z-index: 1002;
    }
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    .section-title {
        font-size: 2rem;
    }
}