/* ============================================================================
   ElectroTime — a scientific timing instrument.
   Identity: precision over decoration. One teal (the logo) for the brand and
   "what you intend"; one warm signal (#ff5d3b) reserved exclusively for the
   measured delay — the gap between trigger and reality the device exists to show.
   Type pairs Space Grotesk (engineered display) with IBM Plex Sans/Mono.
   ========================================================================== */

:root,
.wa-theme-awesome {
    /* --- brand palette --- */
    --ink:        #0d1418;   /* headings, strong text */
    --ink-soft:   #55636b;   /* body copy, labels */
    --ink-faint:  #8a969d;   /* captions, fine print */
    --paper:      #ffffff;
    --paper-2:    #f5f8f9;   /* alternating section band */
    --line:       #e4eaec;   /* hairlines */
    --brand:      #0097b2;   /* logo teal — intent / trigger */
    --brand-deep: #007288;   /* hover / active */
    --brand-wash: #e6f6f9;   /* faint teal fills */
    --signal:     #ff5d3b;   /* the measured delay — used sparingly */

    /* map our tokens onto the few Web Awesome surfaces we keep */
    --wa-color-brand-fill-loud: var(--brand);
    --wa-color-brand-fill-normal: var(--brand);
    --wa-color-brand-fill-quiet: var(--brand-wash);
    --wa-color-brand-on-loud: #ffffff;

    /* --- type --- */
    --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
    --font-body:    "IBM Plex Sans", system-ui, sans-serif;
    --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

    /* --- rhythm --- */
    --content: 1080px;
    --measure: 720px;
    --header-h: 64px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* keep wide content (result plots, the trace SVG) from overflowing on mobile */
img { max-width: 100%; height: auto; }
svg { max-width: 100%; }

/* Web Awesome's base stylesheet pads the semantic landmarks (main: 48px,
   header/footer too). Our layout is full-bleed with its own inner spacing,
   so reset them. */
main { padding: 0; }
.site-header { padding: 0; }
.site-footer { padding: 0; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink-soft);
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3 {
    font-family: var(--font-display);
    color: var(--ink);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 0;
}

a { color: var(--brand-deep); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--brand); }

/* tabular figures for any latency / cost numbers */
table, code, .stat-num, .trace text { font-variant-numeric: tabular-nums; }

/* Eyebrow: the recurring mono label that signs every section */
.eyebrow {
    margin: 0 0 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--brand);
}

/* --- buttons -------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.7em 1.25em;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    transition: background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
}
.btn-solid { background: var(--brand); color: #fff; }
.btn-solid:hover { background: var(--brand-deep); color: #fff; transform: translateY(-1px); }
.btn-ghost { color: var(--ink); border-color: var(--line); background: var(--paper); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-deep); }

/* ============================================================================
   Header — slim, sticky, logo left / nav + CTA right
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--paper) 82%, transparent);
    backdrop-filter: saturate(160%) blur(10px);
    border-bottom: 1px solid var(--line);
}
.site-header-inner {
    max-width: var(--content);
    margin-inline: auto;
    min-height: var(--header-h);
    padding: 0 var(--wa-space-l, 1.5rem);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.brand { display: inline-flex; line-height: 0; }
.site-logo { height: 38px; width: auto; display: block; }

.site-nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.site-nav a {
    font-size: 0.92rem;
    color: var(--ink-soft);
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: color .15s ease;
}
.site-nav a:hover { color: var(--ink); }

.header-cta { padding: 0.5em 1em; font-size: 0.9rem; }

/* ============================================================================
   Hero — the thesis: trigger vs. reality
   ========================================================================== */
.hero {
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(60% 80% at 85% 10%, var(--brand-wash) 0%, transparent 60%),
        var(--paper);
}
.hero-inner {
    max-width: var(--content);
    margin-inline: auto;
    padding: clamp(1.75rem, 3vw, 3rem) var(--wa-space-l, 1.5rem) clamp(3rem, 6vw, 5rem);
    display: grid;
    grid-template-columns: 1.02fr 0.98fr;
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
}
/* let grid columns shrink below the device image's intrinsic width */
.hero-copy, .hero-visual { min-width: 0; }
.hero-title {
    font-size: clamp(2.4rem, 6vw, 4.1rem);
    font-weight: 700;
    margin: 0 0 1.25rem;
}
.hero-title-accent { color: var(--brand); }
.hero-lede {
    max-width: 34ch;
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
    color: var(--ink-soft);
    margin: 0 0 1.75rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 2.25rem; }

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 1.5rem 0 0;
    border-top: 1px solid var(--line);
}
.hero-stats li { display: flex; flex-direction: column; }
.stat-num {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--ink);
}
.stat-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

/* --- hero visual: framed device with the trace card floating over it ------ */
.hero-visual { position: relative; }
.device-shot {
    margin: 0;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: 0 24px 60px -28px rgba(13, 20, 24, 0.45);
}
.device-shot img { display: block; width: 100%; height: auto; }

.trace-card {
    position: absolute;
    right: -3rem;
    top: -1.75rem;
    width: min(55%, 260px);
    margin: 0;
    padding: 1rem 1.1rem 0.85rem;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: 0 18px 40px -20px rgba(13, 20, 24, 0.35);
}
.trace-caption {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin: 0 0 0.5rem;
}
.trace { display: block; width: 100%; height: auto; }

/* trace internals */
.trace-grid line { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 4; }
.trace-band { fill: color-mix(in srgb, var(--signal) 9%, transparent); }
.edge { stroke-width: 1.25; stroke-dasharray: 3 3; }
.edge-trigger { stroke: var(--brand); }
.edge-stim { stroke: var(--signal); }
.trace-line { fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.line-trigger { stroke: var(--brand); }
.line-stim { stroke: var(--signal); }
.trace-delta line { stroke: var(--signal); stroke-width: 1.5; }
.trace-delta text {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    fill: var(--signal);
}
.lane-label {
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    fill: var(--ink-faint);
}
.lane-label-stim { fill: color-mix(in srgb, var(--signal) 70%, var(--ink)); }

/* draw-on-load animation */
.trace-line {
    stroke-dasharray: 520;
    stroke-dashoffset: 520;
    animation: trace-draw 1.1s cubic-bezier(.6,.05,.2,1) forwards;
}
.line-trigger { animation-delay: 0.25s; }
.line-stim { animation-delay: 0.6s; }
.trace-band, .trace-delta, .edge { opacity: 0; animation: trace-fade .6s ease forwards 1.5s; }
@keyframes trace-draw { to { stroke-dashoffset: 0; } }
@keyframes trace-fade { to { opacity: 1; } }

/* ============================================================================
   Sections — embedded leaves, alternating bands, no boxes
   ========================================================================== */
.section {
    border-bottom: 1px solid var(--line);
    scroll-margin-top: calc(var(--header-h) + 1rem);
}
.home-sections .section:nth-child(even),
.page-sections .section:nth-child(even) { background: var(--paper-2); }
.section-inner {
    max-width: var(--content);
    margin-inline: auto;
    padding: clamp(3rem, 6vw, 5rem) var(--wa-space-l, 1.5rem);
}
.section-head { margin-bottom: 1.75rem; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 600; }
.section-body { max-width: var(--measure); }
.section-body > :first-child { margin-top: 0; }
.section-body p { margin: 0 0 1.1rem; }
.section-body ul { padding-left: 1.1rem; }
.section-body li { margin-bottom: 0.4rem; }

/* figures inside section/branch content */
.section-body img,
.prose img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--line);
    border-radius: 10px;
}

/* ============================================================================
   Branch pages (/hardware/, /user-guide/, …) — readable prose column
   ========================================================================== */
.prose {
    max-width: var(--measure);
    margin: 0 auto;
    padding: clamp(2.5rem, 6vw, 4rem) var(--wa-space-l, 1.5rem) 4rem;
}
/* Lead-in intro on pages that also have step sections below (e.g. the guide):
   match the section container width so the intro's left edge and rhythm line up
   with the sections, while keeping the text itself at a readable measure. */
.prose-intro { max-width: var(--content); }
.prose-intro > * { max-width: var(--measure); }
.prose h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 1.25rem; }
.prose h2 { font-size: 1.5rem; margin: 2.5rem 0 0.75rem; }
.prose p { margin: 0 0 1.1rem; }

/* ============================================================================
   Team — portraits rendered from markdown <p><img> inside #team
   ========================================================================== */
#team .section-body {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    gap: var(--wa-space-s, .5rem);
}
/* intro paragraph spans the full row above the portrait cards */
#team .section-body > p:not(:has(img)) {
    flex: 1 0 100%;
    margin: 0 0 .6rem;
}
#team .section-body p:has(img) {
    display: flex;
    flex-direction: column;
    width: 150px;
    margin: 0;
    padding: var(--wa-space-m, 1rem) var(--wa-space-s, .5rem);
    text-align: center;
    line-height: 1.4;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 1px 3px rgba(13, 20, 24, 0.06);
    transition: box-shadow .2s ease, transform .2s ease;
}
#team .section-body p:has(img):hover {
    box-shadow: 0 10px 24px -12px rgba(13, 20, 24, 0.25);
    transform: translateY(-2px);
}
#team .section-body p:has(img) img {
    width: 104px;
    height: 104px;
    margin: 0 auto var(--wa-space-xs, .4rem);
    border: 3px solid var(--brand-wash);
    border-radius: 50%;
    box-shadow: none;
    object-fit: cover;
}
#team .section-body p:has(img) strong {
    display: block;
    color: var(--ink);
    font-size: 1rem;
}

/* ============================================================================
   Community — brand-logo cards (self-labeling wordmarks) rendered from
   markdown <li><a><img>> inside #community
   ========================================================================== */
#community .section-body ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--wa-space-m, 1rem);
}
#community .section-body li {
    margin: 0;
}
#community .section-body li a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
    height: 92px;
    padding: var(--wa-space-m, 1rem) var(--wa-space-l, 1.5rem);
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 1px 3px rgba(13, 20, 24, 0.06);
    text-decoration: none;
    transition: box-shadow .2s ease, transform .2s ease;
}
#community .section-body li a:hover {
    box-shadow: 0 10px 24px -12px rgba(13, 20, 24, 0.25);
    transform: translateY(-2px);
}
#community .section-body li a img {
    height: 40px;
    width: auto;
    max-width: 200px;
    margin: 0;
    object-fit: contain;
    box-shadow: none;
    border: none;
    border-radius: 0;
}

/* ============================================================================
   Guide / branch pages — capped figures with captions, tickable checklists.
   Scoped to .page-sections / .prose, so the home page (#team, #community) is
   untouched. Markup is produced by guide.js (figures + checkbox polyfill).
   ========================================================================== */

/* Figures: cap the size, frame, and centre. guide.js wraps each content image
   in <figure.guide-figure> inside its paragraph (.figure-row). */
.page-sections .figure-row,
.prose .figure-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 1.25rem;
    margin: 1.5rem 0;
}
/* a lone figure sits centred; two cable photos sit side by side */
.page-sections .figure-row:has(.guide-figure:only-child),
.prose .figure-row:has(.guide-figure:only-child) { justify-content: center; }

.guide-figure {
    margin: 0;
    flex: 0 1 auto;
    max-width: min(100%, 420px);
}
/* in a multi-image row, each figure shares the space more tightly */
.figure-row:not(:has(.guide-figure:only-child)) .guide-figure { max-width: 260px; }

.guide-figure img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 340px;
    object-fit: contain;
    margin: 0;                 /* override the default .section-body img margin */
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper);
}
.guide-figure figcaption {
    margin-top: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.45;
    letter-spacing: 0.02em;
    color: var(--ink-faint);
    text-align: center;
}

/* Tickable checklists: guide.js adds .task-list / .task-item and a .task-box. */
.task-list {
    list-style: none;
    padding-left: 0;
}
.task-list .task-list { padding-left: 1.5rem; margin-top: 0.4rem; }  /* nested groups keep indent */
.task-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 0.5rem;
    color: var(--ink-soft);
    transition: color .15s ease;
}
.task-box {
    appearance: none;
    -webkit-appearance: none;
    flex: 0 0 auto;
    width: 1.15rem;
    height: 1.15rem;
    margin-top: 0.12rem;
    border: 1.5px solid var(--line);
    border-radius: 5px;
    background-color: var(--paper);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 0.72rem 0.72rem;
    cursor: pointer;
    transition: background-color .15s ease, border-color .15s ease;
}
.task-box:checked {
    background-color: var(--brand);
    border-color: var(--brand);
    background-image: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2016%2016'%20fill='none'%20stroke='%23fff'%20stroke-width='2.5'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M3.5%208.5%206.5%2011.5%2012.5%204.5'/%3E%3C/svg%3E");
}
.task-box:hover { border-color: var(--brand); }
.task-item.is-checked { color: var(--ink-faint); text-decoration: line-through; }

/* ============================================================================
   Footer — quiet, fine print
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--line);
    background: var(--paper);
}
.site-footer-inner {
    max-width: var(--content);
    margin-inline: auto;
    padding: 2rem var(--wa-space-l, 1.5rem);
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--ink-faint);
}
.footer-brand { color: var(--ink-soft); font-weight: 600; letter-spacing: 0.05em; }
.site-footer-inner a { color: var(--ink-soft); }
.site-footer-inner a:hover { color: var(--brand-deep); }
.footer-meta:last-child { margin-left: auto; }

/* ============================================================================
   Responsive
   ========================================================================== */
@media (max-width: 860px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero-visual { margin-top: 1rem; }
    .trace-card {
        position: static;
        width: 100%;
        margin-top: 1rem;
    }
    .device-shot { box-shadow: 0 16px 40px -24px rgba(13,20,24,.4); }
}
@media (max-width: 620px) {
    .site-nav { display: none; }
    .hero-stats { gap: 1.25rem; }
    .footer-meta:last-child { margin-left: 0; }
}

/* ============================================================================
   Accessibility floors
   ========================================================================== */
:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: 4px;
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .trace-line { stroke-dashoffset: 0; animation: none; }
    .trace-band, .trace-delta, .edge { opacity: 1; animation: none; }
    .btn:hover, #team .section-body p:has(img):hover, #community .section-body li a:hover { transform: none; }
}