:root {
    --bg-0: #03070c;
    --bg-1: #0a1119;
    --bg-2: #111c28;
    --bg-3: #172735;

    --text-0: #edf5ff;
    --text-1: #adc3d8;
    --text-2: #7892aa;

    --line-0: #1e3245;
    --line-1: #2e4860;

    --accent-0: #4fe4ff;
    --accent-1: #18bbdb;
    --accent-2: #86f1ff;

    --success: #31d9a8;
    --danger: #ff8da0;

    --font-heading: 'Space Grotesk', 'Segoe UI', sans-serif;
    --font-body: 'Plus Jakarta Sans', 'Segoe UI', sans-serif;

    --container: 1140px;
    --radius-s: 10px;
    --radius-m: 16px;
    --radius-l: 24px;

    --shadow-soft: 0 14px 40px rgba(2, 9, 17, 0.48);
    --shadow-strong: 0 28px 58px rgba(1, 7, 14, 0.58);

    --nav-height: 74px;
    --ease: 260ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-height) + 22px);
}

body {
    font-family: var(--font-body);
    color: var(--text-0);
    line-height: 1.65;
    background:
        radial-gradient(circle at 8% 8%, rgba(79, 228, 255, 0.12), transparent 30%),
        radial-gradient(circle at 84% 0%, rgba(55, 116, 165, 0.14), transparent 34%),
        linear-gradient(150deg, #03070c 0%, #060d15 35%, #09121b 70%, #071019 100%);
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
    background-size: 62px 62px;
    opacity: 0.18;
}

img {
    max-width: 100%;
    display: block;
}

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

ul {
    list-style: none;
}

section {
    padding: clamp(4.2rem, 9vw, 7.2rem) 0;
}

.container {
    width: min(100% - 2.6rem, var(--container));
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.7rem, 3.3vw, 2.45rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 2.4rem;
}

.section-title::after {
    content: '';
    display: block;
    width: 62px;
    height: 2px;
    margin-top: 0.66rem;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent-0), transparent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.44rem;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.75rem 1.24rem;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    transition: transform var(--ease), color var(--ease), background var(--ease), border-color var(--ease), box-shadow var(--ease);
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px) scale(1.01);
}

.btn-primary {
    background: linear-gradient(115deg, var(--accent-0), var(--accent-2));
    color: #03212d;
    box-shadow: 0 12px 28px rgba(13, 174, 203, 0.34);
}

.btn-primary:hover {
    box-shadow: 0 20px 42px rgba(13, 174, 203, 0.42);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--line-1);
    color: var(--text-0);
}

.btn-secondary:hover {
    color: var(--accent-0);
    border-color: var(--accent-0);
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-0);
    outline-offset: 2px;
}

.navbar {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    height: var(--nav-height);
    border-bottom: 1px solid transparent;
    transition: border-color var(--ease), background var(--ease), backdrop-filter var(--ease);
}

.navbar.scrolled {
    border-bottom-color: rgba(79, 228, 255, 0.2);
    background: rgba(4, 9, 14, 0.74);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--accent-0);
}

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

.nav-links a {
    position: relative;
    font-family: var(--font-heading);
    font-size: 0.81rem;
    text-transform: uppercase;
    letter-spacing: 0.095em;
    color: var(--text-1);
    transition: color var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-0);
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.42rem;
    height: 2px;
    border-radius: 999px;
    background: var(--accent-0);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--ease);
}

.nav-links a.active::after,
.nav-links a:hover::after {
    transform: scaleX(1);
}

.btn-nav-resume {
    padding: 0.56rem 0.93rem;
    font-size: 0.77rem;
    border-color: var(--line-1);
    color: var(--text-1);
    background: rgba(255, 255, 255, 0.02);
}

.btn-nav-resume:hover {
    border-color: var(--accent-0);
    color: var(--accent-0);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: 0;
    background: transparent;
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 22px;
    height: 2px;
    background: var(--text-0);
    transition: transform var(--ease), opacity var(--ease);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.hero {
    min-height: 100svh;
    display: grid;
    align-items: center;
    padding-top: calc(var(--nav-height) + 2.2rem);
}

.hero-container {
    max-width: 860px;
}

.hero-greeting {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.91rem;
    color: var(--accent-0);
    margin-bottom: 0.66rem;
}

.hero-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(2.6rem, 8vw, 5.2rem);
    line-height: 0.97;
    letter-spacing: -0.03em;
    text-wrap: balance;
}

.hero-typing-wrapper {
    margin-top: 1.1rem;
    margin-bottom: 1.4rem;
    display: inline-flex;
    align-items: center;
    gap: 0.32rem;
    border-radius: 999px;
    border: 1px solid rgba(79, 228, 255, 0.32);
    background: rgba(79, 228, 255, 0.08);
    padding: 0.38rem 0.8rem;
}

.hero-typing {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 2.4vw, 1.34rem);
    color: #ccf6ff;
    font-weight: 500;
}

.typing-cursor {
    color: var(--accent-0);
    animation: blink 950ms steps(1, end) infinite;
}

.hero-description {
    max-width: 70ch;
    color: var(--text-1);
    font-size: clamp(1rem, 1.9vw, 1.13rem);
}

.hero-cta {
    margin-top: 2.1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.88rem;
}

.about-grid,
.contact-grid {
    display: grid;
    gap: 1.5rem;
    align-items: start;
}

.about-grid {
    grid-template-columns: 280px 1fr;
}

.about-photo-wrapper {
    border-radius: var(--radius-l);
    padding: 1px;
    background: linear-gradient(150deg, rgba(79, 228, 255, 0.42), rgba(30, 72, 102, 0.35), transparent 70%);
}

.about-photo,
.about-avatar-fallback {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: calc(var(--radius-l) - 1px);
    background: var(--bg-1);
}

.about-photo {
    object-fit: cover;
}

.about-avatar-fallback {
    display: none;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 3.8rem;
    color: var(--accent-0);
}

.about-text {
    border: 1px solid var(--line-0);
    background: linear-gradient(180deg, rgba(16, 27, 39, 0.92), rgba(10, 18, 28, 0.92));
    border-radius: var(--radius-l);
    padding: clamp(1.2rem, 3vw, 2rem);
    box-shadow: var(--shadow-soft);
}

.about-text p {
    color: var(--text-1);
}

.about-text p + p {
    margin-top: 0.95rem;
}

.about-highlights {
    margin-top: 1.45rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.8rem;
}

.highlight-item {
    border: 1px solid var(--line-0);
    border-radius: var(--radius-m);
    background: rgba(255, 255, 255, 0.02);
    padding: 0.84rem 0.72rem;
    transition: transform var(--ease), border-color var(--ease), background var(--ease);
}

.highlight-item:hover {
    transform: translateY(-3px);
    border-color: rgba(79, 228, 255, 0.45);
    background: rgba(79, 228, 255, 0.07);
}

.highlight-number {
    display: block;
    color: var(--accent-0);
    font-family: var(--font-heading);
    font-size: 1.21rem;
    font-weight: 700;
    line-height: 1.1;
}

.highlight-label {
    color: var(--text-2);
    font-size: 0.82rem;
}

.skills-grid,
.projects-grid,
.education-grid,
.credentials-grid {
    display: grid;
    gap: 1rem;
}

.skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.skill-category,
.project-card,
.education-item,
.credential-item,
.timeline-content,
.contact-info,
.contact-form {
    border: 1px solid var(--line-0);
    border-radius: var(--radius-l);
    background: linear-gradient(180deg, rgba(15, 24, 35, 0.94), rgba(9, 15, 23, 0.94));
    transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease), background var(--ease);
}

.skill-category,
.education-item,
.timeline-content,
.contact-info,
.contact-form {
    padding: 1.2rem;
}

.skill-category:hover,
.project-card:hover,
.education-item:hover,
.credential-item:hover,
.timeline-content:hover,
.contact-info:hover,
.contact-form:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 228, 255, 0.38);
    box-shadow: var(--shadow-soft);
}

.skill-category-title,
.project-name,
.timeline-header h3,
.education-item h3,
.credential-info h3 {
    font-family: var(--font-heading);
    letter-spacing: -0.015em;
}

.skill-category-title {
    font-size: 1.04rem;
    margin-bottom: 0.8rem;
}

.skill-tags,
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.52rem;
}

.skill-tag,
.project-tech span,
.project-badge,
.education-year {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.65rem;
    border: 1px solid var(--line-1);
    border-radius: 999px;
    color: var(--text-1);
    background: rgba(5, 13, 20, 0.72);
    font-size: 0.75rem;
}

.projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.project-card {
    padding: 1.3rem;
    display: grid;
    gap: 0.78rem;
}

.project-card.featured {
    background:
        linear-gradient(180deg, rgba(16, 31, 44, 0.95), rgba(10, 18, 27, 0.95)),
        radial-gradient(circle at 0% 0%, rgba(79, 228, 255, 0.13), transparent 45%);
    border-color: rgba(79, 228, 255, 0.42);
}

.project-badge {
    color: #cef7ff;
    width: fit-content;
}

.project-name {
    font-size: 1.24rem;
}

.project-subtitle {
    color: var(--text-1);
    font-size: 0.9rem;
}

.project-desc,
.timeline-desc,
.education-item p,
.credential-title,
.contact-subtitle {
    color: var(--text-1);
}

.project-link {
    width: fit-content;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-0);
    font-family: var(--font-heading);
    font-size: 0.87rem;
    transition: color var(--ease), transform var(--ease);
}

.project-link:hover {
    color: var(--accent-2);
    transform: translateX(3px);
}

.timeline {
    position: relative;
    padding-left: 1.2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(var(--accent-0), transparent 92%);
}

.timeline-item {
    position: relative;
    padding-left: 1rem;
}

.timeline-item + .timeline-item {
    margin-top: 1rem;
}

.timeline-marker {
    position: absolute;
    left: -1px;
    top: 1.2rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--accent-0);
    background: var(--bg-0);
}

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.26rem;
}

.timeline-date {
    color: var(--text-2);
    font-size: 0.82rem;
}

.timeline-company,
.credential-meta {
    color: var(--accent-0);
    font-size: 0.9rem;
    margin-bottom: 0.48rem;
}

.education-grid,
.credentials-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.education-year {
    margin-bottom: 0.65rem;
}

.credential-item {
    padding: 1rem;
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
}

.credential-icon {
    width: 2.45rem;
    height: 2.45rem;
    flex-shrink: 0;
    border-radius: 10px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(79, 228, 255, 0.34);
    color: var(--accent-0);
    background: rgba(79, 228, 255, 0.13);
}

.credential-title {
    font-size: 0.92rem;
}

.contact-subtitle {
    max-width: 56ch;
    margin: -1rem 0 1.45rem;
}

.contact-grid {
    grid-template-columns: 1fr 1.2fr;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 0.72rem;
    padding: 0.72rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.065);
}

.contact-info-item:last-child {
    border-bottom: 0;
}

.contact-info-item svg {
    color: var(--accent-0);
    flex-shrink: 0;
}

.contact-info-item a {
    color: var(--text-1);
    transition: color var(--ease);
}

.contact-info-item a:hover {
    color: var(--accent-0);
}

.contact-form {
    display: grid;
    gap: 0.8rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid var(--line-1);
    border-radius: var(--radius-s);
    background: rgba(4, 11, 17, 0.85);
    color: var(--text-0);
    font-family: var(--font-body);
    font-size: 0.95rem;
    padding: 0.82rem 0.86rem;
    transition: border-color var(--ease), box-shadow var(--ease);
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
    border-color: var(--accent-0);
    box-shadow: 0 0 0 3px rgba(79, 228, 255, 0.13);
    outline: 0;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-2);
}

.contact-form textarea {
    min-height: 7.6rem;
    resize: vertical;
}

.btn-submit {
    width: fit-content;
    margin-top: 0.2rem;
}

.form-status {
    min-height: 1.2rem;
    color: var(--text-2);
    font-size: 0.9rem;
}

.form-status.success {
    color: var(--success);
}

.form-status.error {
    color: var(--danger);
}

.footer {
    border-top: 1px solid var(--line-0);
    background: rgba(5, 10, 15, 0.78);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1.15rem 0;
}

.footer-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    color: var(--text-2);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.footer-links a {
    width: 34px;
    height: 34px;
    border: 1px solid var(--line-0);
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: var(--text-1);
    transition: color var(--ease), transform var(--ease), border-color var(--ease), background var(--ease);
}

.footer-links a:hover {
    color: var(--accent-0);
    border-color: rgba(79, 228, 255, 0.45);
    background: rgba(79, 228, 255, 0.09);
    transform: translateY(-3px);
}

.reveal {
    opacity: 0;
    transform: translateY(36px) scale(0.99);
    transition:
        opacity 620ms cubic-bezier(0.2, 0.7, 0.2, 1),
        transform 620ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

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

    51%,
    100% {
        opacity: 0;
    }
}

@media (max-width: 980px) {
    .nav-links {
        position: fixed;
        inset: 0;
        background: rgba(4, 9, 13, 0.98);
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 1.6rem;
        transform: translateX(100%);
        visibility: hidden;
        pointer-events: none;
        transition: transform var(--ease), visibility var(--ease);
    }

    .nav-links.open {
        transform: translateX(0);
        visibility: visible;
        pointer-events: auto;
    }

    .nav-links a {
        font-size: 1rem;
    }

    .mobile-menu-btn {
        display: inline-flex;
    }

    .btn-nav-resume {
        display: none;
    }

    .about-grid,
    .skills-grid,
    .projects-grid,
    .education-grid,
    .credentials-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .about-photo-wrapper {
        max-width: 280px;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 1.35rem, var(--container));
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--nav-height) + 1.8rem);
        padding-bottom: 4.4rem;
    }

    .hero-cta {
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

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

    .timeline {
        padding-left: 0.9rem;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.35rem;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
    }

    .reveal,
    .reveal.visible {
        opacity: 1;
        transform: none;
    }
}

@media print {
    .navbar,
    .mobile-menu-btn,
    .contact-form,
    .footer {
        display: none !important;
    }

    body {
        background: #fff;
        color: #111;
    }

    .container {
        width: 100%;
    }

    section {
        padding: 1rem 0;
        page-break-inside: avoid;
    }
}