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

:root {
    --bg-primary: #0c1220;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --bg-card-hover: #22303f;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #22d3ee;
    --accent-light: #67e8f9;
    --accent-glow: rgba(34, 211, 238, 0.12);
    --green: #22c55e;
    --red: #ef4444;
    --yellow: #eab308;
    --border: #1e293b;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s ease;
}

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

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

a {
    color: var(--accent-light);
    text-decoration: none;
    transition: color var(--transition);
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-light);
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

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

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

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

/* === Hero === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    padding: 100px 24px 60px;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 520px;
}

.hero-greeting {
    font-family: var(--font-mono);
    color: var(--accent-light);
    font-size: 1rem;
    margin-bottom: 8px;
}

.hero-name {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-wrapper {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    height: 30px;
}

.hero-title-dynamic {
    color: var(--accent-light);
    font-weight: 600;
}

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

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-light);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

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

.btn-secondary:hover {
    background: var(--accent-glow);
    color: var(--accent-light);
    transform: translateY(-2px);
}

/* === Hero Right (Photo + Terminal) === */
.hero-right {
    flex: 1;
    max-width: 460px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: center;
}

.hero-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
}

.hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    color: var(--accent-light);
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 700;
}

.hero-languages {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.lang-badge {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-light);
    background: var(--accent-glow);
    border: 1px solid rgba(34, 211, 238, 0.2);
    padding: 4px 12px;
    border-radius: 16px;
}

/* === Terminal === */
.hero-terminal {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}

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

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

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: 8px;
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
}

.terminal-body .prompt {
    color: var(--green);
    margin-right: 8px;
}

.terminal-body .output {
    color: var(--text-secondary);
    padding-left: 20px;
}

.terminal-body .success {
    color: var(--green);
}

.cursor-blink {
    animation: blink 1s infinite;
}

/* === Sections === */
.section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 48px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 12px auto 0;
    border-radius: 2px;
}

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

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

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

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px;
    transition: all var(--transition);
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateX(4px);
    box-shadow: -4px 0 20px var(--accent-glow);
}

.stat-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
    display: block;
}

.stat-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

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

/* === Skills === */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

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

.skill-category:hover {
    border-color: var(--accent);
}

.skill-category h3 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--accent-light);
    font-weight: 600;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background: rgba(34, 211, 238, 0.1);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    border: 1px solid rgba(34, 211, 238, 0.2);
    transition: all var(--transition);
}

.skill-tag:hover {
    background: rgba(34, 211, 238, 0.2);
    color: var(--text-primary);
    border-color: var(--accent);
}

/* === Timeline === */
.timeline {
    position: relative;
    padding-left: 32px;
}

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

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: -38px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--accent);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-light);
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin: 4px 0;
}

.timeline-company {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

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

.timeline-content li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding-left: 20px;
    position: relative;
    margin-bottom: 6px;
}

.timeline-content li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-family: var(--font-mono);
}

/* === Projects === */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

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

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.project-icon {
    font-size: 2rem;
}

.project-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
    padding: 4px 10px;
    border-radius: 4px;
}

/* === Certifications === */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px;
    text-align: center;
    transition: all var(--transition);
}

.cert-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.cert-badge {
    min-width: 48px;
    height: 48px;
    padding: 0 12px;
    border-radius: 24px;
    background: var(--accent-glow);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--accent-light);
    margin: 0 auto 16px;
}

.cert-card h3 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.cert-card p {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* === Contact === */
.contact-intro {
    text-align: center;
    color: var(--text-secondary);
    max-width: 500px;
    margin: -24px auto 48px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 2px;
}

.contact-item a {
    font-size: 0.95rem;
}

.contact-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 16px;
}

.contact-cta p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 8px;
}

.btn-large {
    width: 100%;
    text-align: center;
    padding: 14px 32px;
}

/* === Looking For === */
.looking-for-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.looking-for-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: all var(--transition);
}

.looking-for-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.looking-for-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 16px;
}

.looking-for-card h3 {
    font-size: 1.05rem;
    margin-bottom: 12px;
    color: var(--accent-light);
}

.looking-for-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* === Testimonials === */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    position: relative;
    transition: all var(--transition);
}

.testimonial-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.testimonial-quote {
    font-size: 4rem;
    font-family: Georgia, serif;
    color: var(--accent);
    line-height: 1;
    margin-bottom: -8px;
    opacity: 0.6;
}

.testimonial-text {
    color: var(--text-primary);
    font-size: 1.05rem;
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 20px;
}

.testimonial-author strong {
    display: block;
    color: var(--accent-light);
    font-size: 0.9rem;
}

.testimonial-author span {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* === Education === */
.education-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    display: flex;
    gap: 28px;
    align-items: flex-start;
    transition: border-color var(--transition);
}

.education-card:hover {
    border-color: var(--accent);
}

.education-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.education-content h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.education-school {
    color: var(--accent-light);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.education-transition {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* === Footer === */
.footer {
    padding: 24px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

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

/* === Animations === */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* === Responsive === */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(12, 18, 32, 0.95);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
        gap: 40px;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-languages {
        justify-content: center;
    }

    .hero-right {
        max-width: 100%;
    }

    .hero-terminal {
        max-width: 100%;
    }

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

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

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .looking-for-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .contact-cta {
        align-items: stretch;
    }
}