/* brennan.sstools.co — "field notes / datasheet"
   Left-aligned editorial masthead, monospace display type, graph-paper grid,
   single amber accent. Deliberately not the centered-glow template. */

:root {
    --bg:          #0c0c0e;   /* warm near-black */
    --panel:       #141317;
    --panel-2:     #1a191e;
    --ink:         #f2ede3;   /* warm paper-white (headings) */
    --body:        #cbc5b9;   /* paragraph text */
    --muted:       #8b867c;   /* small meta / captions */
    --line:        rgba(242, 237, 227, 0.11);
    --line-strong: rgba(242, 237, 227, 0.24);
    --accent:      #ffb000;   /* phosphor amber */
    --accent-hi:   #ffc852;
    --accent-soft: rgba(255, 176, 0, 0.13);

    --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

    --max: 1040px;
    --text-col: 68ch;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background-color: var(--bg);
    /* faint engineering graph-paper grid */
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 30px 30px;
    background-position: -1px -1px;
    color: var(--body);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; height: auto; display: block; }

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

.skip-link {
    position: absolute; left: 16px; top: -56px;
    background: var(--accent); color: #201400;
    font-family: var(--mono); font-size: 13px; font-weight: 600;
    padding: 10px 16px; z-index: 20; transition: top .15s ease;
}
.skip-link:focus { top: 16px; text-decoration: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* mono utility label */
.kicker {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
}

hr.rule {
    border: 0;
    border-top: 1px solid var(--line-strong);
    margin: 0;
}

/* ---------------- Masthead ---------------- */

.masthead { padding-top: 28px; }

.mast-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 16px;
    flex-wrap: wrap;
}
.mast-top .wordmark {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink);
}
.mast-top .wordmark b { color: var(--accent); font-weight: 700; }

.mast-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.mast-nav a {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--muted);
}
.mast-nav a:hover { color: var(--accent); text-decoration: none; }

.mast-main {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
    padding: 44px 0 40px;
}

.mast-id h1 {
    font-family: var(--mono);
    font-weight: 600;
    font-size: clamp(38px, 6.4vw, 68px);
    line-height: 1.02;
    letter-spacing: -0.02em;
    margin: 0;
    color: var(--ink);
}
.mast-id .role {
    margin: 18px 0 0;
    font-size: 20px;
    color: var(--body);
    max-width: 40ch;
}
.mast-id .role b { color: var(--ink); font-weight: 600; }

.mast-id .sub {
    margin: 14px 0 0;
    font-family: var(--mono);
    font-size: 14px;
    color: var(--muted);
}
/* blinking terminal cursor */
.cursor {
    display: inline-block;
    width: 0.6em; height: 1.05em;
    margin-left: 2px;
    background: var(--accent);
    vertical-align: -0.15em;
    animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.mast-actions { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }

/* headshot as a framed plate, not a glowing orb */
.mast-photo { text-align: center; }
.mast-photo img {
    width: 168px; height: 168px;
    object-fit: cover;
    border: 1px solid var(--line-strong);
    border-radius: 3px;
    filter: grayscale(0.15) contrast(1.02);
}
.mast-photo figcaption {
    margin-top: 8px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

/* ---------------- Buttons ---------------- */

.btn {
    font-family: var(--mono);
    font-size: 14px; font-weight: 600;
    letter-spacing: 0.02em;
    padding: 12px 20px;
    border-radius: 3px;
    border: 1px solid var(--accent);
    display: inline-block;
    transition: background .14s ease, color .14s ease;
}
.btn-primary { background: var(--accent); color: #201400; }
.btn-primary:hover { background: var(--accent-hi); color: #201400; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--accent); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-hi); text-decoration: none; }

/* ---------------- Sections ---------------- */

section { padding: 60px 0; border-top: 1px solid var(--line-strong); }

.sec-head {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin: 0 0 8px;
}
.sec-no {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--accent);
    font-weight: 600;
}
.sec-head h2 {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 26px;
    letter-spacing: -0.01em;
    margin: 0;
    color: var(--ink);
}
.sec-intro { margin: 0 0 36px; color: var(--muted); max-width: var(--text-col); }

/* ---------------- Project datasheets ---------------- */

.datasheets { display: flex; flex-direction: column; gap: 28px; }

.spec {
    border: 1px solid var(--line);
    background: linear-gradient(180deg, var(--panel), var(--bg));
    border-radius: 4px;
    padding: 28px;
    position: relative;
}
.spec::before {
    /* corner registration tick */
    content: "";
    position: absolute; top: -1px; left: -1px;
    width: 14px; height: 14px;
    border-top: 2px solid var(--accent);
    border-left: 2px solid var(--accent);
}

.spec-head { display: flex; align-items: baseline; gap: 14px; }
.spec-no {
    font-family: var(--mono); font-size: 13px; color: var(--accent);
    padding-top: 4px;
}
.spec-head h3 {
    font-family: var(--mono); font-weight: 600; font-size: 23px;
    margin: 0; color: var(--ink); letter-spacing: -0.01em;
}
.spec-sub { margin: 6px 0 16px; color: var(--ink); font-weight: 500; font-size: 18px; }
.spec-body { margin: 0 0 22px; color: var(--body); max-width: var(--text-col); }
.spec-body code, .spec-sub code, .making code {
    font-family: var(--mono); font-size: 0.86em;
    background: var(--panel-2); border: 1px solid var(--line);
    padding: 1px 6px; border-radius: 3px; color: var(--accent-hi);
}

/* datasheet key/value rows */
.spec-meta {
    margin: 0 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 3px;
    overflow: hidden;
}
.spec-meta > div {
    padding: 10px 14px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.spec-meta dt {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--muted); margin: 0 0 3px;
}
.spec-meta dd { margin: 0; font-size: 14px; color: var(--ink); }

.spec-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.spec-links a { font-family: var(--mono); font-size: 14px; font-weight: 500; }
.spec-links a::before { content: "→ "; color: var(--muted); }

.credit {
    margin: 18px 0 0; padding-top: 14px;
    border-top: 1px dashed var(--line);
    font-size: 13.5px; color: var(--muted); max-width: var(--text-col);
}
.credit b { color: var(--body); font-weight: 600; }

/* ---------------- Figure plates (media slots) ---------------- */

.plate { margin: 24px 0 0; }

.plate-frame {
    position: relative;
    aspect-ratio: 16 / 10;
    border: 1px solid var(--line-strong);
    border-radius: 3px;
    background-color: var(--panel-2);
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 24px 24px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
/* crosshair corner ticks */
.plate-frame::before, .plate-frame::after {
    content: ""; position: absolute; width: 12px; height: 12px;
    border-color: var(--line-strong); border-style: solid; border-width: 0;
    pointer-events: none;
}
.plate-frame::before { top: 8px; left: 8px; border-top-width: 1px; border-left-width: 1px; }
.plate-frame::after  { bottom: 8px; right: 8px; border-bottom-width: 1px; border-right-width: 1px; }

.plate-frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.plate-ph { text-align: center; padding: 20px; color: var(--muted); z-index: 1; }
.plate-tag {
    display: inline-block;
    font-family: var(--mono); font-size: 11px; font-weight: 600;
    letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--accent);
    border: 1px solid var(--accent-soft);
    background: var(--accent-soft);
    padding: 4px 12px; border-radius: 2px; margin-bottom: 10px;
}
.plate-ph p { margin: 0; font-size: 13.5px; }

.plate-frame.has-image .plate-ph { display: none; }
.plate-frame.has-image { background-image: none; border-style: solid; }
.plate-frame.has-image::before, .plate-frame.has-image::after { display: none; }

.plate figcaption {
    margin-top: 10px;
    font-family: var(--mono); font-size: 12.5px; color: var(--muted);
    letter-spacing: 0.02em;
}
.plate figcaption b { color: var(--accent); font-weight: 600; }

/* ---------------- Agent skills ---------------- */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 18px;
}

.skill-card {
    border: 1px solid var(--line);
    background: linear-gradient(180deg, var(--panel), var(--bg));
    border-radius: 4px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: relative;
}
.skill-card::before {
    /* corner registration tick, matching project datasheets */
    content: "";
    position: absolute; top: -1px; left: -1px;
    width: 12px; height: 12px;
    border-top: 2px solid var(--accent);
    border-left: 2px solid var(--accent);
}

.skill-card h3 {
    font-family: var(--mono); font-weight: 600; font-size: 19px;
    margin: 0; color: var(--ink); letter-spacing: -0.01em;
}
.skill-card .skill-no {
    font-family: var(--mono); font-size: 13px; font-weight: 600;
    color: var(--accent); margin-right: 8px;
}
.skill-card .skill-sub { margin: 8px 0 12px; color: var(--ink); font-weight: 500; font-size: 15.5px; }
.skill-card p { margin: 0 0 18px; font-size: 14.5px; color: var(--body); }
.skill-card code {
    font-family: var(--mono); font-size: 0.86em;
    background: var(--panel-2); border: 1px solid var(--line);
    padding: 1px 6px; border-radius: 3px; color: var(--accent-hi);
}

.skill-foot { margin-top: auto; }
.skill-install {
    font-family: var(--mono); font-size: 12.5px; line-height: 1.5;
    background: var(--panel-2); border: 1px solid var(--line);
    color: var(--accent-hi); border-radius: 3px;
    padding: 9px 12px; margin: 0 0 12px;
    white-space: normal; overflow-wrap: anywhere;
}
.skill-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.skill-links a { font-family: var(--mono); font-size: 14px; font-weight: 500; }
.skill-links a::before { content: "→ "; color: var(--muted); }

/* ---------------- Making / hardware ---------------- */

.making-lead { font-size: 19px; color: var(--body); max-width: var(--text-col); margin: 0 0 26px; }
.making-lead b { color: var(--ink); font-weight: 600; }
.making-lead .amp { color: var(--accent); }

.plate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 26px; }

.note {
    margin: 28px 0 0;
    border: 1px solid var(--line);
    border-left: 3px solid var(--accent);
    border-radius: 3px;
    background: var(--panel);
    padding: 18px 22px;
}
.note .kicker { display: block; margin-bottom: 6px; color: var(--accent); }
.note h3 { font-family: var(--mono); margin: 0 0 4px; font-size: 17px; color: var(--ink); }
.note p { margin: 0; color: var(--body); font-size: 15px; }

/* ---------------- Connect ---------------- */

.connect-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; max-width: 720px; }
.connect-card {
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--panel);
    padding: 22px;
    transition: border-color .14s ease;
}
.connect-card:hover { border-color: var(--line-strong); }
.connect-card .kicker { color: var(--accent); }
.connect-card h3 { font-family: var(--mono); font-size: 18px; margin: 8px 0 4px; color: var(--ink); }
.connect-card p { margin: 0 0 14px; font-size: 14.5px; color: var(--muted); }
.connect-card a.go { font-family: var(--mono); font-size: 14px; font-weight: 600; }
.connect-card a.go::after { content: " →"; }

/* ---------------- Footer ---------------- */

footer { border-top: 1px solid var(--line-strong); margin-top: 20px; }
.foot-inner {
    display: flex; justify-content: space-between; align-items: center;
    gap: 20px; flex-wrap: wrap;
    padding: 30px 0 48px;
}
.foot-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.foot-nav a, .foot-copy {
    font-family: var(--mono); font-size: 12.5px; color: var(--muted);
    letter-spacing: 0.04em;
}
.foot-nav a:hover { color: var(--accent); text-decoration: none; }

/* ---------------- Responsive ---------------- */

@media (max-width: 760px) {
    .wrap { padding: 0 20px; }
    .mast-main { grid-template-columns: 1fr; gap: 28px; padding: 32px 0; }
    .mast-photo { justify-self: start; text-align: left; }
    .mast-photo img { width: 128px; height: 128px; }
    .plate-grid { grid-template-columns: 1fr; }
    .spec { padding: 22px; }
    section { padding: 48px 0; }
}

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