:root {
    color-scheme: dark;
    --bg: #0b0f14;
    --bg-soft: #101822;
    --bg-glass: rgba(16, 24, 34, 0.7);
    --text: #e9edf2;
    --muted: #98a4b3;
    --accent: #4fd1c5;
    --accent-2: #9f7aea;
    --line: rgba(255, 255, 255, 0.08);
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --font-main: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
    --transition: 0.3s ease;
}

html[data-theme="light"] {
    color-scheme: light;
    --bg: #f7f8fb;
    --bg-soft: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.75);
    --text: #10131a;
    --muted: #5f6b7a;
    --accent: #00b6a8;
    --accent-2: #5a67d8;
    --line: rgba(16, 19, 26, 0.1);
    --shadow: 0 24px 60px rgba(20, 25, 34, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: radial-gradient(circle at top, rgba(79, 209, 197, 0.08), transparent 55%),
        radial-gradient(circle at 20% 20%, rgba(159, 122, 234, 0.08), transparent 50%),
        var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.6s ease;
}

body.is-loaded {
    opacity: 1;
}

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

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

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

button,
input,
textarea {
    font-family: inherit;
    border: none;
}

button {
    cursor: pointer;
    background: transparent;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.container {
    width: min(1120px, 90%);
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 20px;
    background: var(--accent);
    color: #04121b;
    padding: 8px 12px;
    border-radius: 8px;
    z-index: 1000;
    transition: top var(--transition);
}

.skip-link:focus {
    top: 20px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    width: 0;
    z-index: 999;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 990;
    background: rgba(10, 14, 20, 0.75);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}

html[data-theme="light"] .site-header {
    background: rgba(247, 248, 251, 0.85);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    gap: 22px;
    align-items: center;
}

.nav-menu a {
    font-size: 0.95rem;
    color: var(--muted);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
}

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

.theme-toggle {
    border: 1px solid var(--line);
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--bg-soft);
    box-shadow: var(--shadow);
    margin-left: 16px;
}

.hero {
    position: relative;
    padding: 120px 0 100px;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    align-items: center;
}

.bg-particles span {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(79, 209, 197, 0.3);
    border-radius: 50%;
    animation: float 12s infinite alternate;
}

.bg-particles span:nth-child(3n) {
    background: rgba(159, 122, 234, 0.3);
    width: 4px;
    height: 4px;
}

.bg-particles span:nth-child(odd) {
    animation-duration: 9s;
}

.bg-particles span:nth-child(1) {
    top: 20%;
    left: 10%;
}

.bg-particles span:nth-child(2) {
    top: 70%;
    left: 20%;
}

.bg-particles span:nth-child(3) {
    top: 30%;
    left: 35%;
}

.bg-particles span:nth-child(4) {
    top: 80%;
    left: 40%;
}

.bg-particles span:nth-child(5) {
    top: 50%;
    left: 60%;
}

.bg-particles span:nth-child(6) {
    top: 15%;
    left: 70%;
}

.bg-particles span:nth-child(7) {
    top: 65%;
    left: 75%;
}

.bg-particles span:nth-child(8) {
    top: 40%;
    left: 85%;
}

.bg-particles span:nth-child(9) {
    top: 85%;
    left: 90%;
}

.bg-particles span:nth-child(10) {
    top: 25%;
    left: 55%;
}

.bg-particles span:nth-child(11) {
    top: 10%;
    left: 45%;
}

.bg-particles span:nth-child(12) {
    top: 75%;
    left: 5%;
}

.bg-particles span:nth-child(13) {
    top: 55%;
    left: 30%;
}

.bg-particles span:nth-child(14) {
    top: 35%;
    left: 65%;
}

.bg-particles span:nth-child(15) {
    top: 90%;
    left: 50%;
}

.eyebrow {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted);
    margin-bottom: 16px;
}

.gradient-text {
    font-size: clamp(2.8rem, 4vw, 4.2rem);
    line-height: 1.1;
    background: linear-gradient(110deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    color: transparent;
    animation: gradientShift 6s ease infinite;
}

.subtitle {
    font-size: 1.2rem;
    margin: 18px 0;
    color: var(--muted);
}

.rotating-text {
    font-weight: 600;
    color: var(--text);
    border-bottom: 1px solid var(--line);
    padding-bottom: 2px;
    transition: opacity 0.25s ease;
}

.rotating-text.fade {
    opacity: 0.3;
}

.typing {
    font-family: var(--font-mono);
    color: var(--accent);
    min-height: 24px;
}

.hero-summary {
    margin: 18px 0 24px;
    color: var(--muted);
}

.cta-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 18px;
    border-radius: 999px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: transform var(--transition), background var(--transition);
}

.btn.primary {
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    color: #04121b;
}

.btn.ghost {
    border-color: var(--line);
    background: var(--bg-soft);
    color: var(--text);
}

.btn:hover {
    transform: translateY(-2px);
}

.hero-tags {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-tags span {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.85rem;
    color: var(--muted);
}

.hero-media {
    text-align: center;
}

.photo-frame {
    padding: 10px;
    border-radius: var(--radius-lg);
    background: linear-gradient(140deg, rgba(79, 209, 197, 0.3), rgba(159, 122, 234, 0.2));
    box-shadow: var(--shadow);
}

.photo-frame img {
    border-radius: var(--radius-md);
    background: var(--bg-soft);
}

.section {
    padding: 90px 0;
}

.section-header {
    margin-bottom: 40px;
    max-width: 760px;
}

.section-kicker {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--accent);
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(2rem, 3vw, 2.6rem);
    margin-bottom: 12px;
}

.section-header p {
    color: var(--muted);
}

.grid {
    display: grid;
    gap: 20px;
}

.grid.two {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid.three {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: var(--bg-soft);
    box-shadow: var(--shadow);
}

.card.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(18px);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.list {
    margin-top: 16px;
    display: grid;
    gap: 8px;
    color: var(--muted);
}

.list li {
    list-style: none;
    position: relative;
    padding-left: 18px;
}

.list li::before {
    content: "*";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.pill {
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.85rem;
    border: 1px solid var(--line);
}

.meta {
    display: grid;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 12px;
}

.project {
    display: grid;
    gap: 14px;
}

.media-placeholder {
    height: 160px;
    border-radius: var(--radius-sm);
    background: linear-gradient(140deg, rgba(79, 209, 197, 0.2), rgba(159, 122, 234, 0.2));
    display: grid;
    place-items: center;
    font-weight: 600;
    color: var(--muted);
}

.stack {
    font-size: 0.85rem;
    color: var(--muted);
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.timeline {
    display: grid;
    gap: 20px;
    border-left: 1px solid var(--line);
    padding-left: 24px;
}

.timeline li {
    list-style: none;
    position: relative;
    padding-left: 8px;
}

.timeline li::before {
    content: "";
    position: absolute;
    left: -33px;
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 6px rgba(79, 209, 197, 0.15);
}

.skills-grid {
    display: grid;
    gap: 16px;
}

.skill {
    display: grid;
    gap: 8px;
}

.bar {
    height: 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    transition: width 1.4s ease;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 18px;
}

.count {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.faq details {
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    padding: 18px;
    background: var(--bg-soft);
    margin-bottom: 12px;
}

.faq summary {
    cursor: pointer;
    font-weight: 600;
}

.contact-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

label {
    display: grid;
    gap: 8px;
    margin-bottom: 16px;
}

input,
textarea {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    border: 1px solid var(--line);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
}

.site-footer {
    border-top: 1px solid var(--line);
    padding: 40px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 16px;
}

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

.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

.loader {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: grid;
    place-items: center;
    gap: 16px;
    z-index: 1000;
    color: var(--muted);
    transition: opacity 0.4s ease;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-ring {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent);
    animation: spin 1s linear infinite;
}

.custom-cursor {
    position: fixed;
    top: 0;
    left: 0;
    width: 18px;
    height: 18px;
    border: 1px solid var(--accent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 998;
    mix-blend-mode: screen;
    transition: transform 0.1s ease;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 100% 50%;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes float {
    from {
        transform: translateY(0);
    }

    to {
        transform: translateY(-20px);
    }
}

@media (max-width: 900px) {
    .nav-menu {
        position: absolute;
        top: 68px;
        right: 5%;
        flex-direction: column;
        background: var(--bg-soft);
        padding: 18px;
        border-radius: var(--radius-sm);
        border: 1px solid var(--line);
        display: none;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }
}

@media (max-width: 700px) {
    .hero {
        padding: 100px 0 80px;
    }

    .cta-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .theme-toggle {
        margin-left: 0;
    }
}

@media (pointer: coarse) {
    .custom-cursor {
        display: none;
    }
}

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

    * {
        animation: none !important;
        transition: none !important;
    }
}