/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #0f1422;
    --bg-card: #141b2d;
    --bg-card-hover: #1a2340;
    --text-primary: #e2e8f0;
    --text-secondary: #8892a4;
    --text-muted: #4a5568;
    --accent: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --gradient: linear-gradient(135deg, #00d4ff, #7c3aed);
    --border: #1e293b;
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', -apple-system, sans-serif;
    --nav-height: 70px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: all 0.3s ease;
    background: transparent;
}

.nav.scrolled {
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-bracket {
    color: var(--accent);
}

.logo-text {
    color: var(--text-primary);
    margin: 0 2px;
}

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

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--accent);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 2rem;
    z-index: 1;
}

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

.hero-terminal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 2rem;
    overflow: hidden;
    display: inline-block;
    text-align: left;
}

.terminal-header {
    background: rgba(30, 41, 59, 0.8);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: var(--accent-red); }
.terminal-dot.yellow { background: var(--accent-orange); }
.terminal-dot.green { background: var(--accent-green); }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 8px;
}

.terminal-body {
    padding: 16px 20px;
}

.terminal-line {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.terminal-prompt {
    color: var(--accent-green);
}

.terminal-command {
    color: var(--accent);
}

.terminal-cursor {
    color: var(--accent);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-greeting {
    display: block;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.hero-name {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-weight: 300;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.highlight {
    color: var(--accent);
    font-weight: 500;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 2rem;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 6px 16px;
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--accent);
    background: rgba(0, 212, 255, 0.05);
    transition: all 0.3s ease;
}

.tag:hover {
    border-color: var(--accent);
    background: rgba(0, 212, 255, 0.1);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2.5rem;
}

.btn {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 14px 32px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
    transform: rotate(45deg);
    opacity: 0.5;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== Sections ===== */
.section {
    padding: 100px 2rem;
    position: relative;
    z-index: 1;
}

.section-alt {
    background: var(--bg-secondary);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
}

.section-number {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 400;
    margin-right: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: -2rem;
    margin-bottom: 3rem;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
}

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

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

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
}

.stat-number {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-suffix {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 3px solid var(--accent);
    z-index: 1;
}

.timeline-item:first-child .timeline-marker {
    background: var(--accent);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.timeline-role {
    font-size: 1.25rem;
    font-weight: 600;
}

.timeline-company {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.timeline-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: 1.5rem;
}

.timeline-achievements li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.timeline-achievements li::before {
    content: '\25B8';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.timeline-achievements li strong {
    color: var(--text-primary);
}

.timeline-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-tech span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 4px;
    color: var(--accent);
}

/* ===== Skills ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.skill-category:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.skill-category h3 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.skill-name {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.skill-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: 3px;
    width: 0;
    transition: width 1.5s ease;
}

/* ===== Achievements ===== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.achievement-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    text-align: center;
}

.achievement-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-6px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.achievement-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.achievement-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.achievement-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Blog ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.blog-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.blog-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 2px 10px;
    background: rgba(124, 58, 237, 0.15);
    color: var(--accent-secondary);
    border-radius: 50px;
}

.blog-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.blog-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
}

.blog-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    margin-top: 1rem;
    transition: color 0.3s ease;
}

.blog-link:hover {
    color: var(--accent-secondary);
}

/* ===== Contact ===== */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    margin-bottom: 2.5rem;
}

.contact-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.contact-text strong {
    color: var(--text-primary);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
    min-width: 120px;
}

.contact-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.15);
}

.contact-icon {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.contact-card span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.contact-availability {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-green);
}

.availability-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-green);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}

.footer p {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-sub {
    margin-top: 0.5rem;
    font-size: 0.7rem !important;
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .skills-grid,
    .achievements-grid,
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 14, 23, 0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .skills-grid,
    .achievements-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

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

    .timeline {
        padding-left: 30px;
    }

    .timeline-header {
        flex-direction: column;
    }

    .section {
        padding: 60px 1.5rem;
    }
}

/* ===== Selection ===== */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: #fff;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}