/* =========================================================
   Savit Pawar / Field Logbook
   Plain HTML/CSS/JS. No build step.
   ========================================================= */

:root {
    --paper:  #FBFAF6;
    --card:   #FFFFFF;
    --ink:    #1B1A16;
    --faded:  #6A675C;
    --dim:    #96928600;      /* used via color-mix fallbacks below */
    --grid:   #E9E6DB;
    --hair:   #DAD6C8;
    --rule:   #5B3A78;
    --pen:    #2C4C8E;
    --pen-hi: #38508A;

    --maxw: 1080px;
    --rail: 78px;             /* width of the ruled margin column */
    --bar-h: 61px;

    --f-display: "Archivo", "Arial Narrow", system-ui, sans-serif;
    --f-body: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
    --f-mono: "Martian Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

:root:not([data-theme="light"]) {
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --paper:  #16150F;
        --card:   #1D1C16;
        --ink:    #ECE9DF;
        --faded:  #9C988A;
        --grid:   #252319;
        --hair:   #302D22;
        --rule:   #8B62C4;
        --pen:    #86AEEC;
        --pen-hi: #A2C1F2;
        color-scheme: dark;
    }
}

:root[data-theme="dark"] {
    --paper:  #16150F;
    --card:   #1D1C16;
    --ink:    #ECE9DF;
    --faded:  #9C988A;
    --grid:   #252319;
    --hair:   #302D22;
    --rule:   #8B62C4;
    --pen:    #86AEEC;
    --pen-hi: #A2C1F2;
    color-scheme: dark;
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--bar-h) + 12px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
    margin: 0;
    background-color: var(--paper);
    background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 27px 27px;
    background-position: -1px -1px;
    color: var(--ink);
    font-family: var(--f-body);
    font-size: 17px;
    line-height: 1.62;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-weight: 700; }
p { margin: 0; }
a { color: var(--pen); }

.dim { color: var(--faded); }

.skip {
    position: absolute;
    left: 12px;
    top: -60px;
    z-index: 200;
    background: var(--ink);
    color: var(--paper);
    padding: 8px 14px;
    border-radius: 2px;
    text-decoration: none;
    transition: top .16s ease;
}
.skip:focus { top: 10px; }

:where(a, button):focus-visible {
    outline: 2px solid var(--rule);
    outline-offset: 3px;
    border-radius: 1px;
}

/* ---------- top bar ---------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--bar-h);
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 0 clamp(16px, 4vw, 40px);
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--hair);
}

.wordmark {
    font-family: var(--f-display);
    font-weight: 800;
    font-stretch: 118%;
    letter-spacing: .01em;
    text-transform: uppercase;
    font-size: 15px;
    color: var(--ink);
    text-decoration: none;
    white-space: nowrap;
}

.topnav {
    display: flex;
    gap: clamp(10px, 2.4vw, 26px);
    margin-left: auto;
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.topnav::-webkit-scrollbar { display: none; }
.topnav a {
    font-family: var(--f-mono);
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--faded);
    text-decoration: none;
    padding: 4px 0;
    white-space: nowrap;
    flex: 0 0 auto;
    border-bottom: 2px solid transparent;
    transition: color .15s ease, border-color .15s ease;
}
.topnav a:hover { color: var(--ink); }
.topnav a.is-active { color: var(--ink); border-bottom-color: var(--rule); }

.theme {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1px solid var(--hair);
    border-radius: 2px;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--faded);
    font-family: var(--f-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: .1em;
    text-transform: uppercase;
    transition: border-color .15s ease, color .15s ease;
}
.theme:hover { border-color: var(--faded); color: var(--ink); }
.theme-dot {
    width: 9px; height: 9px; border-radius: 50%;
    background: var(--rule);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ink) 20%, transparent);
}

/* ---------- sheet + ruled margin ---------- */
.sheet {
    position: relative;
    max-width: var(--maxw);
    margin: 0 auto;
    padding-bottom: 40px;
}

/* the running margin rule */
.sheet::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(var(--rail) - 1px);
    width: 2px;
    background: var(--rule);
    transform-origin: top center;
}
.sheet.draw::before {
    animation: draw-rule .9s cubic-bezier(.2, .7, .2, 1) both;
}
@keyframes draw-rule {
    from { transform: scaleY(0); }
    to   { transform: scaleY(1); }
}

/* ---------- entries ---------- */
.entry {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, 1fr);
    border-bottom: 1px solid var(--hair);
}
.entry:last-of-type { border-bottom: none; }

.tab {
    position: relative;
    display: flex;
    justify-content: flex-end;
}
.tab span {
    position: sticky;
    top: calc(var(--bar-h) + 26px);
    align-self: flex-start;
    display: block;
    width: max-content;
    height: max-content;
    padding: 10px 9px 10px 6px;
    background: var(--paper);
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: var(--f-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: .26em;
    text-transform: uppercase;
    color: var(--faded);
    transition: color .2s ease;
}
.entry.in-view .tab span { color: var(--rule); }

.body {
    padding: clamp(34px, 6vw, 68px) clamp(18px, 5vw, 60px) clamp(38px, 6vw, 70px);
    min-width: 0;
}

.eyebrow {
    font-family: var(--f-mono);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--faded);
    margin-bottom: 20px;
}

/* ---------- hero ---------- */
.hero .body { padding-top: clamp(40px, 8vw, 96px); }

.hero-name {
    font-family: var(--f-display);
    font-weight: 800;
    font-stretch: 125%;
    text-transform: uppercase;
    line-height: .92;
    letter-spacing: -.005em;
    font-size: clamp(2.9rem, 10vw, 6rem);
    margin-bottom: clamp(26px, 4vw, 42px);
}

.spec {
    margin: 0;
    max-width: 640px;
    border-top: 1px solid var(--hair);
}
.spec-row {
    display: grid;
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 16px;
    padding: 11px 0;
    border-bottom: 1px solid var(--hair);
}
.spec dt, .skills dt {
    font-family: var(--f-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--faded);
    padding-top: 3px;
}
.spec dd, .skills dd {
    margin: 0;
    font-size: 15.5px;
}
.spec .dim { font-family: var(--f-mono); font-size: 12px; }

/* ---------- skills (résumé section) ---------- */
.skills {
    margin: 0 0 34px;
    max-width: 760px;
    border-top: 1px solid var(--hair);
}
.skills dd { line-height: 1.5; }

.js .hero .spec-row {
    opacity: 0;
    transform: translateY(6px);
}
.hero.tick .spec-row {
    animation: tick-in .5s cubic-bezier(.2, .7, .2, 1) both;
}
.hero.tick .spec-row:nth-child(1) { animation-delay: .12s; }
.hero.tick .spec-row:nth-child(2) { animation-delay: .19s; }
.hero.tick .spec-row:nth-child(3) { animation-delay: .26s; }
.hero.tick .spec-row:nth-child(4) { animation-delay: .33s; }
.hero.tick .spec-row:nth-child(5) { animation-delay: .40s; }
.hero.tick .spec-row:nth-child(6) { animation-delay: .47s; }
@keyframes tick-in {
    to { opacity: 1; transform: translateY(0); }
}

.live {
    display: inline-block;
    width: 8px; height: 8px;
    margin-right: 9px;
    border-radius: 50%;
    background: #3E9E58;
    box-shadow: 0 0 0 0 color-mix(in srgb, #3E9E58 60%, transparent);
    animation: pulse 2.6s ease-out infinite;
}
@keyframes pulse {
    0%   { box-shadow: 0 0 0 0 color-mix(in srgb, #3E9E58 55%, transparent); }
    70%  { box-shadow: 0 0 0 7px color-mix(in srgb, #3E9E58 0%, transparent); }
    100% { box-shadow: 0 0 0 0 color-mix(in srgb, #3E9E58 0%, transparent); }
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: clamp(26px, 4vw, 40px);
}

/* ---------- buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    font-family: var(--f-mono);
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 12px 18px;
    background: var(--ink);
    color: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 2px;
    transition: transform .14s ease, background-color .14s ease, color .14s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-quiet {
    background: transparent;
    color: var(--ink);
    border-color: var(--hair);
}
.btn-quiet:hover { border-color: var(--ink); }

/* ---------- section headings ---------- */
.entry-title {
    font-family: var(--f-display);
    font-weight: 700;
    font-stretch: 115%;
    text-transform: uppercase;
    letter-spacing: .005em;
    font-size: clamp(1.5rem, 3.4vw, 2.1rem);
    margin-bottom: 14px;
}
.entry-lede {
    color: var(--faded);
    max-width: 46ch;
    margin-bottom: 30px;
}

.prose { max-width: 58ch; }
.prose p + p { margin-top: 1.05em; }

/* ---------- experience ---------- */
.xp {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--hair);
    max-width: 780px;
}
.xp-item {
    display: grid;
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 6px 26px;
    padding: 22px 0;
    border-bottom: 1px solid var(--hair);
}
.xp-when {
    font-family: var(--f-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .04em;
    color: var(--faded);
    padding-top: 4px;
}
.xp-role {
    font-family: var(--f-display);
    font-weight: 700;
    font-stretch: 110%;
    font-size: 1.12rem;
    letter-spacing: .005em;
}
.xp-org {
    font-family: var(--f-mono);
    font-size: 11.5px;
    letter-spacing: .03em;
    color: var(--pen);
    margin: 3px 0 9px;
}
.xp-note {
    font-size: 15px;
    line-height: 1.55;
    max-width: 60ch;
}

/* ---------- projects ---------- */
.projects {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.project-link {
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--card);
    border: 1px solid var(--hair);
    border-left: 3px solid var(--hair);
    border-radius: 3px;
    padding: 22px 24px 24px;
    transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.project-link:hover {
    transform: translateY(-3px);
    border-color: var(--rule);
    box-shadow: 0 12px 34px -20px color-mix(in srgb, var(--ink) 45%, transparent);
}
.project-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--hair);
}
.project-name {
    font-family: var(--f-display);
    font-weight: 800;
    font-stretch: 116%;
    text-transform: uppercase;
    font-size: 1.3rem;
    letter-spacing: .005em;
}
.project-go {
    font-family: var(--f-mono);
    color: var(--pen);
    transition: transform .15s ease;
}
.project-link:hover .project-go { transform: translate(2px, -2px); }

.project-grid {
    display: grid;
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    gap: 10px 40px;
}
.project-spec {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-content: start;
}
.project-spec > div { display: flex; flex-direction: column; gap: 2px; }
.project-spec dt {
    font-family: var(--f-mono);
    font-size: 9.5px;
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--faded);
}
.project-spec dd {
    margin: 0;
    font-family: var(--f-mono);
    font-size: 11.5px;
    line-height: 1.4;
    color: var(--ink);
}
.project-desc {
    font-size: 15px;
    line-height: 1.58;
    max-width: 58ch;
}

/* ---------- résumé ---------- */
.resume-card {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    background: var(--card);
    border: 1px solid var(--hair);
    border-left: 3px solid var(--rule);
    border-radius: 3px;
    padding: 20px 22px;
}
.resume-meta { display: flex; flex-direction: column; gap: 4px; }
.resume-file {
    font-family: var(--f-mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: .04em;
}
.resume-meta .dim { font-size: 12.5px; }
.resume-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- contact ---------- */
.contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--hair);
    max-width: 520px;
}
.contact-list a {
    display: flex;
    align-items: baseline;
    gap: 18px;
    padding: 15px 4px;
    border-bottom: 1px solid var(--hair);
    text-decoration: none;
    color: var(--ink);
    transition: padding-left .16s ease, color .16s ease;
}
.contact-list a:hover { padding-left: 12px; color: var(--pen-hi); }
.contact-k {
    flex: 0 0 84px;
    font-family: var(--f-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--faded);
}
.contact-v {
    font-size: 15.5px;
}
.contact-list a:hover .contact-v { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- colophon ---------- */
.colophon {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 22px clamp(18px, 5vw, 60px) 40px;
    padding-left: calc(var(--rail) + clamp(18px, 5vw, 60px));
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 24px;
    font-family: var(--f-mono);
    font-size: 10.5px;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--faded);
}

/* ---------- responsive ---------- */
@media (max-width: 720px) {
    :root { --rail: 40px; --bar-h: 56px; }

    body { font-size: 16px; background-size: 24px 24px; }

    .topbar { gap: 12px; }
    .wordmark { font-size: 13px; }
    .topnav { gap: 12px; }
    .topnav a { font-size: 10px; }
    .theme-label { display: none; }
    .theme { padding: 7px; }

    .sheet::before { left: calc(var(--rail) - 1px); }

    .tab span {
        top: calc(var(--bar-h) + 10px);
        font-size: 9px;
        letter-spacing: .18em;
        padding-right: 2px;
    }

    .body { padding-left: 16px; padding-right: 16px; }

    .spec-row {
        grid-template-columns: 1fr;
        gap: 3px;
    }
    .spec dt, .skills dt { padding-top: 0; }

    .xp-item {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    .xp-when { padding-top: 0; }

    .project-link { padding: 20px 18px 22px; }
    .project-name { font-size: 1.15rem; }
    .project-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .project-spec {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px 22px;
    }
    .project-spec > div { min-width: 0; }

    .colophon { padding-left: calc(var(--rail) + 16px); }
}

@media (max-width: 430px) {
    .topbar { gap: 9px; padding-left: 14px; padding-right: 14px; }
    .wordmark { font-size: 12px; letter-spacing: 0; }
    .topnav { gap: 9px; }
    .topnav a { font-size: 9.5px; letter-spacing: .04em; }
    .hero-name { font-size: clamp(2.4rem, 13vw, 3rem); }
}

@media (max-width: 400px) {
    .tab span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }
    .js .hero .spec-row { opacity: 1; transform: none; }
}