/* ===== CSS Variables & Reset ===== */
:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --accent: #ff6b35;
    --bg-dark: #0a0e17;
    --bg-section: #0f1520;
    --bg-card: #151c2c;
    --bg-card-hover: #1a2340;
    --text-primary: #e8eaf0;
    --text-secondary: #8892a4;
    --text-muted: #5a6478;
    --border: #1e2a3a;
    --gradient-primary: linear-gradient(135deg, #00d4ff, #0099cc);
    --gradient-accent: linear-gradient(135deg, #ff6b35, #ff4500);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: var(--transition);
}

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 120px 24px 60px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.25);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 24px;
    animation: fadeInDown 0.8s ease;
}

.hero-name {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-name .line {
    display: block;
}

.hero-name .accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-typewriter {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.typewriter-prefix {
    color: var(--accent);
}

.typewriter-cursor {
    animation: blink 0.8s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-summary {
    max-width: 700px;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-summary strong {
    color: var(--primary);
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

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

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

.hero-stats {
    display: flex;
    gap: 48px;
    animation: fadeInUp 0.8s ease 1s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
}

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

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

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

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 50px;
    text-align: center;
}

.section-number {
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    margin-right: 8px;
}

/* ===== About Section ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1rem;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 32px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.highlight:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.highlight i {
    font-size: 1.3rem;
    color: var(--primary);
    width: 24px;
    text-align: center;
}

.highlight span {
    font-weight: 600;
    font-size: 0.95rem;
}

.highlight small {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-left: auto;
}

/* Terminal Card */
.terminal-window {
    background: #1a1e2e;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #12141f;
    border-bottom: 1px solid var(--border);
}

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

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28c940; }

.terminal-title {
    margin-left: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.terminal-line {
    margin-bottom: 12px;
}

.prompt {
    color: var(--accent);
    margin-right: 8px;
}

.terminal-output pre {
    color: var(--primary);
    line-height: 1.6;
    white-space: pre-wrap;
}

/* ===== Competencies ===== */
.competencies-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.competency-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.competency-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.competency-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.competency-icon {
    width: 56px;
    height: 56px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.3rem;
    color: var(--primary);
}

.competency-card h3 {
    font-size: 1.05rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.competency-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--border));
}

.timeline-item {
    position: relative;
    padding-left: 76px;
    margin-bottom: 40px;
    opacity: 0;
    transform: translateX(-30px);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 12px;
    top: 20px;
    width: 34px;
    height: 34px;
    background: var(--bg-dark);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--primary);
    z-index: 1;
}

.timeline-content {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.timeline-company {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.timeline-role {
    display: block;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 4px;
}

.timeline-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: rgba(0, 212, 255, 0.08);
    padding: 6px 14px;
    border-radius: 50px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
}

.timeline-details {
    list-style: none;
    padding: 0;
}

.timeline-details li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-details li::before {
    content: '\f054';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 3px;
    font-size: 0.6rem;
    color: var(--primary);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    border-radius: 50px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

/* ===== Skills Section ===== */
.skills-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.skills-subtitle {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.skills-subtitle i {
    color: var(--primary);
}

.skill-bar {
    margin-bottom: 20px;
    opacity: 0;
    transform: translateX(-20px);
}

.skill-bar.visible {
    opacity: 1;
    transform: translateX(0);
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 500;
}

.skill-info span:last-child {
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
}

.skill-progress {
    height: 8px;
    background: var(--border);
    border-radius: 50px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 50px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.tools-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.tool-item:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.tool-item i {
    color: var(--primary);
    font-size: 0.9rem;
    width: 18px;
    text-align: center;
}

/* ===== Certifications ===== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.cert-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.cert-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.cert-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.cert-card.featured {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), var(--bg-card));
}

.cert-card.featured::before {
    content: 'TOP';
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 0.65rem;
    font-weight: 800;
    color: var(--accent);
    background: rgba(255, 107, 53, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
}

.cert-card.featured:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(255, 107, 53, 0.15);
}

.cert-icon {
    width: 56px;
    height: 56px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.3rem;
    color: var(--primary);
}

.cert-card.featured .cert-icon {
    background: rgba(255, 107, 53, 0.1);
    color: var(--accent);
}

.cert-card h3 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 6px;
    font-family: 'JetBrains Mono', monospace;
}

.cert-card p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.cert-issuer {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.cert-year {
    font-size: 0.75rem;
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

/* ===== Education ===== */
.education-card {
    display: flex;
    align-items: center;
    gap: 32px;
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 36px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    opacity: 0;
    transform: translateY(30px);
}

.education-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.edu-icon {
    width: 72px;
    height: 72px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary);
    flex-shrink: 0;
}

.edu-details h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.edu-field {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.edu-school {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.edu-year {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* ===== Achievements ===== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.achievement-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.achievement-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.achievement-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.achievement-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.3rem;
    color: var(--accent);
}

.achievement-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.achievement-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Contact ===== */
.contact-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary);
}

.contact-card i {
    font-size: 1.2rem;
    color: var(--primary);
    width: 24px;
    text-align: center;
}

.contact-card span {
    font-size: 0.9rem;
    font-weight: 500;
}

.contact-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.contact-note i {
    color: var(--accent);
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
    background: var(--bg-dark);
}

.footer p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-sub {
    margin-top: 4px;
    font-size: 0.75rem !important;
    color: var(--text-muted);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .competencies-grid { grid-template-columns: repeat(2, 1fr); }
    .achievements-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }

    .hero-name { font-size: clamp(2.5rem, 10vw, 4rem); }
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 2rem; }

    .about-grid { grid-template-columns: 1fr; }
    .skills-layout { grid-template-columns: 1fr; }
    .competencies-grid { grid-template-columns: 1fr; }
    .achievements-grid { grid-template-columns: 1fr; }
    .contact-cards { grid-template-columns: 1fr; }

    .timeline::before { left: 18px; }
    .timeline-item { padding-left: 56px; }
    .timeline-marker { left: 2px; width: 34px; height: 34px; }

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

    .education-card {
        flex-direction: column;
        text-align: center;
    }

    .highlight {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }

    .highlight small { margin-left: 0; }
}

@media (max-width: 480px) {
    .hero-stats { flex-direction: column; gap: 16px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .certs-grid { grid-template-columns: 1fr; }
    .tools-list { grid-template-columns: 1fr; }
}