:root {
    --ink: #161613;
    --paper: #F8F7F3;
    --paper-2: #EFEDE6;
    --line: #DAD7CC;
    --muted: #6B685E;
    --teal: #0F5D50;
    --teal-light: #E3EDE9;
    --coral: #C1502E;
    --mono: 'JetBrains Mono', monospace;
    --sans: 'IBM Plex Sans', sans-serif;
    --disp: 'Space Grotesk', sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--teal);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--teal);
    outline-offset: 2px;
}

.wrap {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 24px;
}

::selection {
    background: var(--teal);
    color: var(--paper);
}

/* ---- NAV ---- */
nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(248, 247, 243, 0.92);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--line);
}

nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    padding-bottom: 16px;
}

.logo {
    font-family: var(--mono);
    font-size: 14px;
    letter-spacing: 0.02em;
    color: var(--ink);
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
}

.logo span {
    color: var(--teal);
}

.navlinks {
    display: flex;
    gap: 24px;
    font-family: var(--mono);
    font-size: 13px;
}

.navlinks a {
    color: var(--ink);
}

/* ---- HERO ---- */
header.hero {
    padding: 96px 0 64px;
    border-bottom: 1px solid var(--line);
}

.prompt {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--muted);
    margin: 0 0 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.prompt::before {
    content: "$";
    color: var(--teal);
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--teal);
    animation: blink 1.1s steps(1) infinite;
    vertical-align: -3px;
}

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

h1 {
    font-family: var(--disp);
    font-weight: 700;
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.08;
    margin: 0 0 20px;
    letter-spacing: -0.01em;
}

h1 em {
    font-style: normal;
    color: var(--teal);
}

.lede {
    font-size: 18px;
    color: var(--muted);
    max-width: 520px;
    margin: 0 0 28px;
}

.founder-line {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    border-radius: 100px;
    padding: 8px 18px 8px 8px;
    font-size: 14px;
}

.founder-line .badge {
    background: var(--teal);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 100px;
}

/* ---- SECTION SHELL ---- */
section {
    padding: 64px 0;
    border-bottom: 1px solid var(--line);
}

.eyebrow {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--teal);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 20px;
}

h2 {
    font-family: var(--disp);
    font-size: 26px;
    font-weight: 600;
    margin: 0 0 16px;
}

/* ---- ABOUT ---- */
.about-text {
    max-width: 640px;
    font-size: 16px;
    color: #3A3833;
}

.about-text p {
    margin: 0 0 16px;
}

/* ---- PROJECTS ---- */
.projects {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.card {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 24px;
    background: #fff;
    transition: border-color 0.15s ease, transform 0.15s ease;
    will-change: transform;
}

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

.card.featured {
    border: 2px solid var(--teal);
    background: var(--teal-light);
}

.card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.card-title {
    font-family: var(--disp);
    font-weight: 600;
    font-size: 18px;
    margin: 0;
}

.tag {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    background: var(--paper-2);
    padding: 3px 10px;
    border-radius: 100px;
    white-space: nowrap;
}

.tag.founder {
    background: var(--teal);
    color: var(--paper);
}

.card p.desc {
    margin: 8px 0 12px;
    color: #3A3833;
    font-size: 14.5px;
}

.stack {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.stack span {
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--muted);
}

.stack span:not(:last-child)::after {
    content: "·";
    margin-left: 6px;
    color: var(--line);
}

details {
    margin-top: 8px;
}

summary {
    cursor: pointer;
    font-family: var(--mono);
    font-size: 12.5px;
    color: var(--teal);
    list-style: none;
}

summary::-webkit-details-marker {
    display: none;
}

summary::before {
    content: "▸ ";
}

details[open] summary::before {
    content: "▾ ";
}

details p,
details ul {
    font-size: 14px;
    color: #3A3833;
    margin: 10px 0 0;
}

details ul {
    padding-left: 20px;
}

details li {
    margin-bottom: 6px;
}

.card-link {
    margin: 0 0 12px;
    font-size: 13px;
}

.card-link a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* ---- SKILLS ---- */
.skill-groups {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.skill-group h3 {
    font-family: var(--mono);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    margin: 0 0 10px;
    font-weight: 500;
}

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

.chip {
    font-family: var(--mono);
    font-size: 12.5px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 5px 10px;
    background: var(--paper-2);
}

/* ---- CONTACT ---- */
.contact {
    border-bottom: none;
}

.contact-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.btn {
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--ink);
    border-radius: 8px;
    padding: 12px 20px;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn.primary {
    background: var(--ink);
    color: var(--paper);
}

.btn:hover {
    background: var(--ink);
    color: var(--paper);
}

.btn.primary:hover {
    background: var(--teal);
    border-color: var(--teal);
}

footer {
    padding: 32px 0;
    text-align: center;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
}

/* ---- SCROLL PROGRESS ---- */
.progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--teal);
    z-index: 20;
    transition: width 0.1s linear;
}

/* ---- SCROLL REVEALS ---- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.card.reveal {
    transition-delay: var(--d, 0s);
}

.navlinks a {
    position: relative;
    padding-bottom: 2px;
}

.navlinks a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: -2px;
    height: 1px;
    background: var(--teal);
    transition: right 0.2s ease;
}

.navlinks a.active::after {
    right: 0;
}

.navlinks a.active {
    color: var(--teal);
}

@media (max-width:640px) {
    .navlinks {
        display: none;
    }

    header.hero {
        padding: 64px 0 48px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cursor {
        animation: none;
    }

    html {
        scroll-behavior: auto;
    }

    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}