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

:root {
    --cream: #f5f7fa;
    --ink: #0a1628;
    --muted: #4a6080;
    --accent: #2d6fd4;
    --line: rgba(10, 22, 40, 0.12);
}

[data-theme="dark"] {
    --cream: #080f1c;
    --ink: #e8eef8;
    --muted: #8aaac8;
    --accent: #6aabf0;
    --line: rgba(232, 238, 248, 0.1);
}

html {
    scroll-behavior: smooth;
    font-size: 100%;
}

body {
    font-family: "JetBrains Mono", monospace;
    background: var(--cream);
    color: var(--ink);
    min-height: 100vh;
    overflow-x: hidden;
    cursor: none;
    transition:
        background 0.5s ease,
        color 0.5s ease;
}

/* Touch devices: restore default cursor */
@media (pointer: coarse) {
    body {
        cursor: auto;
    }
    .cursor,
    .cursor-ring,
    #inkCanvas {
        display: none !important;
    }
}

/* ── Custom Cursor ── */
.cursor {
    position: fixed;
    width: 8px;
    height: 8px;
    background: var(--ink);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition:
        width 0.3s ease,
        height 0.3s ease,
        background 0.3s ease;
    opacity: 0;
}

.cursor-ring {
    position: fixed;
    width: 32px;
    height: 32px;
    border: 1px solid var(--ink);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition:
        width 0.3s ease,
        height 0.3s ease,
        opacity 0.3s ease;
    opacity: 0;
}

.cursor.active {
    opacity: 1;
}
.cursor-ring.active {
    opacity: 0.4;
}
.cursor.expanded {
    width: 12px;
    height: 12px;
}
.cursor-ring.expanded {
    width: 48px;
    height: 48px;
    opacity: 0.2;
}

/* ── Ink canvas ── */
#inkCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9997;
}

/* ── Scroll progress bar ── */
#scrollProgress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--accent);
    z-index: 9990;
    transition: width 0.05s linear;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(0px);
    transition:
        backdrop-filter 0.4s ease,
        background 0.4s ease;
}

nav.scrolled {
    backdrop-filter: blur(12px);
    background: rgba(245, 247, 250, 0.8);
}

[data-theme="dark"] nav.scrolled {
    background: rgba(8, 15, 28, 0.8);
}

.nav-logo {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--muted);
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--ink);
    transition: width 0.4s ease;
}

.nav-links a:hover {
    color: var(--ink);
}
.nav-links a:hover::after {
    width: 100%;
}

/* ── Theme Toggle ── */
.theme-toggle {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
    cursor: none;
}

.theme-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-track {
    position: absolute;
    inset: 0;
    border: 1px solid var(--muted);
    border-radius: 100px;
    transition:
        border-color 0.4s ease,
        background 0.4s ease;
    overflow: hidden;
}

.toggle-track::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--ink);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.theme-toggle input:checked + .toggle-track::before {
    opacity: 1;
}

.toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--muted);
    transition:
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        background 0.4s ease;
}

.theme-toggle input:checked ~ .toggle-thumb {
    transform: translateX(20px);
    background: var(--cream);
}

.toggle-icons {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
    pointer-events: none;
}

.toggle-icons svg {
    width: 9px;
    height: 9px;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.icon-sun,
.icon-moon {
    color: var(--ink);
}
[data-theme="dark"] .icon-sun {
    opacity: 0.2;
}
[data-theme="dark"] .icon-moon {
    opacity: 0.8;
}
[data-theme="light"] .icon-sun {
    opacity: 0.8;
}
[data-theme="light"] .icon-moon {
    opacity: 0.2;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

/* ── Hamburger ── */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    background: none;
    border: 1px solid var(--line);
    border-radius: 6px;
    cursor: none;
    padding: 0;
    transition:
        border-color 0.3s ease,
        background 0.3s ease;
    flex-shrink: 0;
}

.hamburger:hover {
    border-color: var(--muted);
    background: rgba(74, 96, 128, 0.06);
}

.hamburger span {
    display: block;
    height: 1px;
    background: var(--muted);
    transition:
        transform 0.35s cubic-bezier(0.23, 1, 0.32, 1),
        opacity 0.25s ease,
        width 0.3s ease,
        background 0.3s ease;
    transform-origin: center;
    border-radius: 2px;
}

.hamburger span:nth-child(1) {
    width: 16px;
}
.hamburger span:nth-child(2) {
    width: 12px;
}
.hamburger span:nth-child(3) {
    width: 16px;
}

.hamburger:hover span {
    background: var(--ink);
}
.hamburger:hover span:nth-child(2) {
    width: 16px;
}

.hamburger.open {
    border-color: var(--ink);
}
.hamburger.open span {
    width: 14px;
    background: var(--ink);
}
.hamburger.open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger.open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ── Mobile Nav ── */
.mobile-nav {
    display: flex;
    position: fixed;
    inset: 0;
    background: var(--cream);
    z-index: 90;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
        opacity 0.4s ease,
        visibility 0.4s ease;
}

.mobile-nav.open {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.mobile-nav ul {
    list-style: none;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.mobile-nav a {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.mobile-nav a:hover {
    color: var(--ink);
}

/* ── HERO ── */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
    opacity: 0;
    animation: fadeUp 1.2s ease 0.2s forwards;
}

.hero-left {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 8rem 4rem 6rem;
    border-right: 1px solid var(--line);
}

.hero-eyebrow {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 1s ease 0.5s forwards;
}

.hero-name {
    font-size: clamp(3.5rem, 7vw, 6.5rem);
    font-weight: 300;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeUp 1s ease 0.7s forwards;
}

.hero-name em {
    font-style: italic;
    color: var(--muted);
}

.hero-desc {
    font-size: 0.82rem;
    font-weight: 300;
    line-height: 1.8;
    color: var(--muted);
    max-width: 36ch;
    margin-top: 2rem;
    opacity: 0;
    animation: fadeUp 1s ease 0.9s forwards;
}

.hero-right {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 8rem 4rem 6rem;
    gap: 2rem;
}

.hero-scroll {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    opacity: 0;
    animation: fadeUp 1s ease 1.2s forwards;
}

.hero-scroll::before {
    content: "";
    width: 36px;
    height: 1px;
    background: var(--accent);
    flex-shrink: 0;
    animation: lineGrow 1.5s ease 1.5s both;
    transform-origin: left;
    transform: scaleX(0);
}

/* ── Terminal widget ── */
.hero-terminal {
    width: min(300px, 90%);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    opacity: 0;
    animation: fadeUp 1s ease 1s forwards;
    box-shadow: 0 12px 32px rgba(10, 22, 40, 0.08);
    transition:
        box-shadow 0.4s ease,
        border-color 0.4s ease;
}

.hero-terminal:hover {
    border-color: var(--accent);
    box-shadow: 0 16px 48px rgba(45, 111, 212, 0.12);
}

[data-theme="dark"] .hero-terminal {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.terminal-bar {
    background: var(--line);
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-bottom: 1px solid var(--line);
}

.t-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
}
.t-red {
    background: #ff5f57;
}
.t-yellow {
    background: #febc2e;
}
.t-green {
    background: #28c840;
}

.t-title {
    margin-left: auto;
    font-size: 0.55rem;
    letter-spacing: 0.12em;
    color: var(--muted);
    text-transform: uppercase;
}

.terminal-body {
    padding: 1rem 1.2rem 0.9rem;
    background: var(--cream);
    display: flex;
    flex-direction: column;
    gap: 0.05rem;
    transition: background 0.5s ease;
}

.t-line {
    font-size: 0.7rem;
    line-height: 1.7;
    white-space: nowrap;
    overflow: hidden;
}

.t-indent {
    padding-left: 1.4em;
}
.t-gap {
    margin-top: 0.4rem;
}

.t-output {
    margin-top: 0.4rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--line);
    color: var(--accent);
    font-size: 0.72rem;
}

/* Syntax colours */
.t-kw {
    color: #c678dd;
}
.t-var {
    color: var(--ink);
}
.t-op {
    color: var(--muted);
}
.t-bracket {
    color: var(--muted);
}
.t-key {
    color: #e06c75;
}
.t-str {
    color: #98c379;
}
.t-bool {
    color: #d19a66;
}
.t-fn {
    color: #61afef;
}
.t-comment {
    color: var(--muted);
    font-style: italic;
    opacity: 0.6;
}
.t-prompt {
    color: var(--muted);
    margin-right: 0.4em;
}

[data-theme="dark"] .t-kw {
    color: #c678dd;
}
[data-theme="dark"] .t-key {
    color: #e06c75;
}
[data-theme="dark"] .t-str {
    color: #98c379;
}
[data-theme="dark"] .t-fn {
    color: #61afef;
}

/* Blinking block cursor */
.t-cursor {
    display: inline-block;
    color: var(--accent);
    animation: blink 1s step-end infinite;
    margin-left: 2px;
    font-size: 0.8em;
    vertical-align: baseline;
}

/* ── SECTION ── */
section {
    padding: 5rem 4rem;
}

.section-label {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 4rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.section-label::before {
    content: "";
    width: 40px;
    height: 1px;
    background: var(--accent);
}

/* ── ABOUT ── */
.about {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 6rem;
    border-top: 1px solid var(--line);
}

.about-left {
    padding-top: 0.5rem;
}

.about-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 2.5rem;
    margin-top: 2.5rem;
}

.about-title em {
    font-style: italic;
    color: var(--muted);
}

.about-body {
    font-size: 0.82rem;
    font-weight: 300;
    line-height: 1.9;
    color: var(--muted);
    margin-top: 2rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--line);
}

.stat-num {
    font-size: 2.8rem;
    font-weight: 300;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
}

/* ── SKILLS ── */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.skill-item {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 2.5rem 2rem;
    position: relative;
    overflow: hidden;
}

.skill-item::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--ink);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-item:hover::before {
    transform: scaleY(1);
}

.skill-item:hover .skill-name,
.skill-item:hover .skill-cat,
.skill-item:hover .skill-icon {
    color: var(--cream);
    opacity: 1;
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    opacity: 0.7;
    position: relative;
    z-index: 1;
    display: block;
    transition:
        color 0.4s ease,
        opacity 0.4s ease;
}

.skill-cat {
    font-size: 0.55rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    transition: color 0.4s ease;
}

.skill-name {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.4;
    position: relative;
    z-index: 1;
    transition: color 0.4s ease;
}

/* ── CONTACT ── */
.contact {
    border-top: 1px solid var(--line);
    text-align: center;
    padding: 8rem 4rem;
}

.contact-tagline {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 3rem;
}

.contact-tagline em {
    font-style: italic;
    color: var(--muted);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 0.3rem;
    transition:
        color 0.3s,
        border-color 0.3s;
    margin: 0 1rem;
}

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

.contact-icon {
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

/* ── FOOTER ── */
footer {
    padding: 2rem 4rem;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer p {
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    color: var(--muted);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes lineGrow {
    to {
        transform: scaleX(1);
    }
}

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

/* ── REVEAL on scroll ── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 0.9s ease,
        transform 0.9s ease;
}

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

/* ── Staggered page load ── */
nav,
.hero,
section,
footer {
    opacity: 0;
}
body.loaded nav {
    animation: fadeUp 0.7s ease 0.1s forwards;
}
body.loaded .hero {
    animation: fadeUp 0.9s ease 0.3s forwards;
}
body.loaded section {
    animation: fadeUp 0.9s ease 0.5s forwards;
}
body.loaded footer {
    animation: fadeUp 0.7s ease 0.6s forwards;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    nav {
        padding: 1.5rem 2rem;
    }
    .nav-links {
        display: none;
    }
    .hamburger {
        display: flex;
    }
    .nav-right {
        gap: 1.5rem;
    }

    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
    }
    .hero-left {
        padding: 7rem 2rem 3rem;
        border-right: none;
        border-bottom: 1px solid var(--line);
    }
    .hero-right {
        padding: 3rem 2rem;
        min-height: 280px;
    }
    .hero-terminal {
        width: 100%;
    }

    section {
        padding: 5rem 2rem;
    }
    .about {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    footer {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        padding: 2rem;
    }
}

@media (max-width: 1100px) and (min-width: 901px) {
    .hero-left {
        padding: 7rem 2.5rem 4rem;
    }
    .hero-right {
        padding: 7rem 2rem 4rem;
    }
    .hero-terminal {
        width: min(260px, 100%);
    }
    .t-line {
        font-size: 0.65rem;
    }
}

@media (min-width: 1400px) {
    :root {
        font-size: 18px;
    }
    nav {
        padding: 2.5rem 6rem;
    }
    .nav-logo {
        font-size: 0.8rem;
    }
    .nav-links a {
        font-size: 0.75rem;
    }
    section {
        padding: 7rem 6rem;
    }
    .hero-left {
        padding: 10rem 6rem 8rem;
    }
    .hero-right {
        padding: 10rem 6rem 8rem;
    }
    .hero-name {
        font-size: clamp(5rem, 8vw, 9rem);
    }
    .hero-desc {
        font-size: 0.88rem;
        max-width: 40ch;
    }
    .about-title {
        font-size: clamp(2.5rem, 4vw, 4.5rem);
    }
    .about-body {
        font-size: 0.88rem;
    }
    .stat-num {
        font-size: 3.5rem;
    }
    .skill-item {
        padding: 3.5rem 2.5rem;
    }
    .skill-name {
        font-size: 1.5rem;
    }
    .contact {
        padding: 10rem 6rem;
    }
    .contact-tagline {
        font-size: clamp(3.5rem, 6vw, 6rem);
    }
    .contact-link {
        font-size: 0.9rem;
        margin: 0 1.5rem;
    }
    footer {
        padding: 2.5rem 6rem;
    }
}

@media (min-width: 1800px) {
    :root {
        font-size: 20px;
    }
    nav {
        padding: 3rem 8rem;
    }
    section {
        padding: 9rem 8rem;
    }
    .hero-left {
        padding: 12rem 8rem 10rem;
    }
    .hero-right {
        padding: 12rem 8rem 10rem;
    }
    .hero-name {
        font-size: clamp(6rem, 9vw, 11rem);
    }
    .hero-desc {
        font-size: 0.92rem;
    }
    .about-body {
        font-size: 0.92rem;
    }
    .skill-item {
        padding: 4rem 3rem;
    }
    .skill-name {
        font-size: 1.75rem;
    }
    footer {
        padding: 3rem 8rem;
    }
}