/* =========================================================
   CONDUIT — style.css
   Visual systems that hold.
   ========================================================= */

/* ---------- TOKENS ---------- */
@font-face {
    font-family: 'OCR B';
    src: url('./assets/fonts/OCRB.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

:root {
    /* color */
    --c-bg:        #f4f4f1; 
    --c-fg:        #0a0a0a;
    --c-muted:     #76766f;
    --c-line:      #e2e2dc;
    --c-line-soft: #ebebe5;

    --c-bg-dark:        #ebebe6; 
    --c-fg-dark:        #0a0a0a;
    --c-muted-dark:     #76766f;
    --c-line-dark:      #d8d8d2;
    --c-line-soft-dark: #e0e0db;

    --c-accent:    #0a0a0a;
    --c-signal:    #397034;

    /* type */
    --f-display: 'OCR B', 'JetBrains Mono', ui-monospace, monospace;
    --f-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    /* spacing */
    --pad-x:   clamp(20px, 5vw, 80px);
    --pad-y:   clamp(64px, 9vh, 112px);
    --gap:     24px;
    --gap-lg:  48px;

    /* layout */
    --maxw: 1440px;
    --nav-h: 28px;

    /* motion */
    --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--f-mono);
    font-size: 14px;
    line-height: 1.55;
    color: var(--c-fg);
    background: var(--c-bg);
    letter-spacing: -0.005em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }

::selection { background: var(--c-fg); color: var(--c-bg); }

/* ---------- NAV ---------- */
.svg-wordmark { height: 14px; width: auto; }

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    z-index: 100;
    background: rgba(244, 244, 241, 0.85);
    backdrop-filter: blur(12px) saturate(1.1);
    -webkit-backdrop-filter: blur(12px) saturate(1.1);
    border-bottom: 1px solid var(--c-line);
}

.nav__grid {
    position: relative;
    height: 100%;
    width: 100%;
}

.nav__logo {
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
}

.nav__links {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    gap: 28px;
        font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-fg);
    transition: opacity 0.2s var(--ease);
}

.nav__status {
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    display: inline-flex;
    align-items: stretch;
    gap: 0;
    font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-fg);
    transition: opacity 0.2s var(--ease);
}
.nav__status:hover { opacity: 0.6; }

.status-text {
    display: inline-flex;
    align-items: center;
    padding: 0 6px;
}



.status-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-left: 1px solid var(--c-line);
    padding: 0 10px;
}
.status-mark img {
    animation: blink 1.6s steps(2, end) infinite;
}
@keyframes blink { 50% { opacity: 0.2; } }

/* burger hidden by default */
.nav__burger {
    display: none;
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    background: transparent;
    border: 0;
    cursor: pointer;
    z-index: 102;
}
.nav__burger span {
    display: block;
    width: 18px;
    height: 1px;
    background: var(--c-fg);
    transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.nav__burger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(3px) rotate(45deg);
}
.nav__burger[aria-expanded="true"] span:nth-child(2) {
    transform: translateY(-3px) rotate(-45deg);
}

/* mobile dropdown panel */
.nav__mobile {
    /* tweak these to taste */
    --nav-m-pad-x: var(--pad-x);
    --nav-m-pad-top: 0;
    --nav-m-pad-bot: 12px;
    --nav-m-link-pad-y: 16px;

    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(244, 244, 241, 0.98);
    backdrop-filter: blur(12px) saturate(1.1);
    -webkit-backdrop-filter: blur(12px) saturate(1.1);
    padding: var(--nav-m-pad-top) 0 0;
    display: none;
    flex-direction: column;
    gap: 0;
    z-index: 101;
}
.nav__mobile[aria-hidden="false"] { display: flex; }

.nav__mobile-link {
    font-family: var(--f-mono);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-fg);
    padding: var(--nav-m-link-pad-y) var(--nav-m-pad-x);
    border-bottom: 1px solid var(--c-line);
    transition: background 0.2s var(--ease);
}
.nav__mobile-link:active,
.nav__mobile-link:hover { background: rgba(10,10,10,0.04); }
.nav__mobile-link:last-child { border-bottom: 1px solid var(--c-line); }

@media (max-width: 900px) {
    .nav__links  { display: none; }
    .nav__burger { display: flex; }

    /* status: only the mark, dead-center of nav */
    .nav__status {
        right: auto;
        left: 50%;
        top: 0;
        bottom: 0;
        transform: translateX(-50%);
    }
    .status-text { display: none; }
    .status-mark {
        border-left: 0;
        padding: 0;
        height: 100%;
    }
    .status-mark img {
        width: 11px;
        height: auto;
        display: block;
    }
}
/* ---------- HERO ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    padding: var(--nav-h) 0 0;
    display: flex;
    align-items: center;
    overflow: hidden;
    border-bottom: 1px solid var(--c-line);
}

.hero__shader {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 1;
    pointer-events: none;
}

.hero__shader--grid { z-index: 1; } 
.hero__shader--mark { z-index: 3; } 

.hero__inner {
    position: relative;
    z-index: 2;
    max-width: var(--maxw);
    width: 100%;
    margin: 28vh auto 0;
    padding: 0 var(--pad-x);
}

.hero__title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(44px, 7.2vw, 104px);
    line-height: 0.96;
    letter-spacing: -0.015em;
    color: var(--c-fg);
}

.hero__corner {
    position: absolute;
    z-index: 2;
    font-family: var(--f-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-fg);
}
.hero__corner--tl { top: calc(var(--nav-h) + 24px); left: var(--pad-x); }
.hero__corner--br { bottom: 24px; right: var(--pad-x); }

/* ---------- HERO READOUT (cursor coord chip) ---------- */
.hero__readout {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 3;
    pointer-events: none;
    font-family: var(--f-mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--c-fg);
    background: var(--c-bg);
    padding: 3px 6px;
    border: 1px solid var(--c-fg);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.15s var(--ease);
    will-change: transform;
}

/* ---------- INTRO (was hero meta/cta) ---------- */
.intro-slogan {
    font-family: var(--f-display);
    font-size: clamp(26px, 3.4vw, 44px);
    line-height: 1.2;
    color: var(--c-fg-dark);
    margin-bottom: 24px;
}

.intro-meta {
    display: grid;
    gap: 12px;
    max-width: 720px;
    margin: 32px 0 40px;
}

.intro-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---------- META ROWS ---------- */
.meta-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 24px;
    font-family: var(--f-mono);
    font-size: 12px;
}
.meta-key {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--c-muted);
}
.meta-val { color: var(--c-fg); }

/* ---------- CTA ---------- */
.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 24px;
    background: transparent;
    color: var(--c-fg);
    font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    border: 1px solid var(--c-fg);
    transition: opacity 0.2s var(--ease);
}
.cta:hover { opacity: 0.6; }

@media (max-width: 600px) {
    .meta-row { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- SECTION SHELL ---------- */
.section {
    position: relative;
    padding: var(--pad-y) var(--pad-x);
    background: var(--c-bg);
    color: var(--c-fg);
}

.section--dark {
    background: var(--c-bg-dark);
    color: var(--c-fg-dark);
    border-bottom-color: var(--c-line-dark);
}

.section__grid {
    max-width: var(--maxw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--gap-lg);
}

.section__label {
    font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-muted);
    padding-top: 12px;

    position: sticky;
    top: calc(var(--nav-h) + 24px);
    align-self: start;
    z-index: 2;
}
.section--dark .section__label { color: var(--c-muted-dark); }

.section__content { min-width: 0; }

.section__heading {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(26px, 3.4vw, 44px);
    line-height: 1.1;
    letter-spacing: -0.005em;
    margin-bottom: 32px;
}

.section__intro {
    font-family: var(--f-mono);
    font-size: 15px;
    line-height: 1.65;
    max-width: 720px;
    margin-bottom: 64px;
    color: var(--c-fg);
}
.section--dark .section__intro { color: var(--c-fg-dark); }

@media (max-width: 800px) {
    .section__grid { grid-template-columns: 1fr; gap: 24px; }
    .section__label { padding-top: 0; position: static; }
}

/* ---------- WORK ---------- */
.section--dark .work-list { border-top-color: var(--c-line-dark); }

.work-item {
    display: grid;
    grid-template-columns: 60px 1fr 2fr 80px 24px;
    gap: 24px;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--c-line);
    font-family: var(--f-mono);
    font-size: 13px;
    transition: padding 0.3s var(--ease), background 0.3s var(--ease);
}

.work-item:hover {
    padding-left: 16px;
    padding-right: 16px;
}

.work-item__index {
    font-size: 11px;
    color: var(--c-muted);
    letter-spacing: 0.12em;
}

.work-item__name {
    font-family: var(--f-display);
    font-size: 20px;
    letter-spacing: -0.005em;
}

.work-item__type { color: var(--c-muted); }
.work-item__year { color: var(--c-muted); font-size: 12px; text-align: right; }
.work-item__arrow { text-align: right; transition: transform 0.3s var(--ease); }
.work-item:hover .work-item__arrow { transform: translateX(8px); }

@media (max-width: 800px) {
    .work-item {
        grid-template-columns: 36px 1fr 20px;
        grid-template-areas:
            "idx  name  arr"
            ".    type  arr";
        column-gap: 16px;
        row-gap: 6px;
        padding: 20px 0;
        align-items: start;
    }
    .work-item:hover { padding-left: 0; padding-right: 0; }

    .work-item__index { grid-area: idx; padding-top: 4px; }
    .work-item__name  {
        grid-area: name;
        font-size: 18px;
        line-height: 1.05;
        min-width: 0;
        overflow-wrap: normal;
        word-break: normal;
        hyphens: none;
    }
    .work-item__type  {
        grid-area: type;
        font-size: 12px;
        line-height: 1.5;
        min-width: 0;
    }
    .work-item__year  { display: none; }
    .work-item__arrow {
        grid-area: arr;
        align-self: center;
        font-size: 14px;
    }
}

/* ---------- PRINCIPLE ---------- */
.principle-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    background: transparent;
    border: 0;
    margin-bottom: 64px;
}

.principle-card {
    background: transparent;
    border: 1px solid var(--c-line-dark);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 220px;
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.principle-card:hover {
    border-color: var(--c-fg-dark);
    transform: translateY(-2px);
}

.principle-card__num {
    font-family: var(--f-display);
    font-size: 13px;
    color: var(--c-muted-dark);
    letter-spacing: 0.05em;
}

.principle-card__title {
    font-family: var(--f-display);
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: -0.005em;
    color: var(--c-fg-dark);
}

.principle-card__desc {
    font-family: var(--f-mono);
    font-size: 13px;
    line-height: 1.6;
    color: var(--c-muted-dark);
    margin-top: auto;
}

.principle-quote {
    font-family: var(--f-display);
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.3;
    letter-spacing: -0.005em;
    color: var(--c-fg-dark);
    max-width: 880px;
}

@media (max-width: 800px) {
    .principle-grid { grid-template-columns: 1fr; }
    .principle-card { min-height: auto; }
}

/* ---------- PROTOCOL DIAGRAM ---------- */
.protocol-diagram {
    margin-top: 8px;
    color: var(--c-fg);
}

.protocol-diagram__svg {
    width: 100%;
    height: 120px;
    display: block;
    color: var(--c-fg);
    overflow: visible;
}

.protocol-diagram__nodes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.pnode {
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pnode__tag {
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-muted);
}

.pnode__title {
    font-family: var(--f-display);
    font-size: 22px;
    line-height: 1.15;
    letter-spacing: -0.005em;
    color: var(--c-fg);
}

.pnode__desc {
    font-family: var(--f-mono);
    font-size: 13px;
    line-height: 1.6;
    color: var(--c-fg);
    max-width: 360px;
}

.pnode__out {
    margin-top: 8px;
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-muted);
}

@media (max-width: 800px) {
    .protocol-diagram__svg { display: none; }
    .protocol-diagram__nodes { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- MODULES (System) ---------- */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    background: transparent;
    border: 0;
}

.module-card {
    background: transparent;
    border: 1px solid var(--c-line-dark);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 220px;
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.module-card:hover {
    border-color: var(--c-fg-dark);
    transform: translateY(-2px);
}

.module-card__icon {
    color: var(--c-fg-dark);
    margin-bottom: 8px;
}

.module-card__title {
    font-family: var(--f-display);
    font-size: 18px;
    letter-spacing: -0.005em;
    color: var(--c-fg-dark);
}

.module-card__desc {
    font-family: var(--f-mono);
    font-size: 13px;
    line-height: 1.6;
    color: var(--c-muted-dark);
    margin-top: auto;
}

@media (max-width: 1000px) { .modules-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .modules-grid { grid-template-columns: 1fr; } }

/* ---------- BOUNDARIES ---------- */
.boundaries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    background: transparent;
    border: 0;
}

.boundary-item {
    background: transparent;
    border: 1px solid var(--c-line);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 200px;
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.boundary-item:hover {
    border-color: var(--c-fg);
    transform: translateY(-2px);
}

.boundary-item__num {
    font-family: var(--f-display);
    font-size: 24px;
    line-height: 1;
    color: var(--c-muted);
}

.boundary-item__title {
    font-family: var(--f-display);
    font-size: 22px;
    letter-spacing: -0.005em;
    color: var(--c-fg);
}

.boundary-item__desc {
    font-family: var(--f-mono);
    font-size: 13px;
    line-height: 1.65;
    color: var(--c-fg);
    margin-top: auto;
}

@media (max-width: 700px) { .boundaries-grid { grid-template-columns: 1fr; } }

/* ---------- TIERS / SCALE ---------- */
.tiers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    background: transparent;
    border: 0;
    margin-bottom: 48px;
}

.tier-card {
    background: transparent;
    border: 1px solid var(--c-line-dark);
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    min-height: 340px;
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.tier-card:hover {
    border-color: var(--c-fg-dark);
    transform: translateY(-2px);
}

.tier-card__header {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.tier-card__tag {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--c-muted-dark);
}

.tier-card__name {
    font-family: var(--f-display);
    font-size: 22px;
    letter-spacing: -0.005em;
    color: var(--c-fg-dark);
}

.tier-card__divider {
    height: 1px;
    background: var(--c-line-dark);
    margin-bottom: 16px;
}

.tier-card__body {
    display: grid;
    gap: 10px;
    margin-bottom: 24px;
}

.tier-card__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    font-family: var(--f-mono);
    font-size: 12px;
}

.tier-card__key {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--c-muted-dark);
    font-size: 10px;
    align-self: center;
}

.tier-card__val { color: var(--c-fg-dark); }

.tier-card__footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--c-line-dark);
}

.tier-card__output {
    font-family: var(--f-mono);
    font-size: 12px;
    line-height: 1.55;
    color: var(--c-muted-dark);
}

.pricing-note {
    display: grid;
    gap: 10px;
    padding: 24px 0 0;
    max-width: 720px;
}

.pricing-note__row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 24px;
    font-family: var(--f-mono);
    font-size: 12px;
}

.pricing-note__key {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--c-muted-dark);
}

.pricing-note__val { color: var(--c-fg-dark); }

@media (max-width: 1000px) { .tiers-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  {
    .tiers-grid { grid-template-columns: 1fr; }
    .pricing-note__row { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- RULES (console) ---------- */
.rules-console {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--c-line);
    background: transparent;
}

/* top row: 10 numbered cells */
.rules-console__index {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    border-bottom: 1px solid var(--c-line);
}

.rules-tab {
    padding: 2px 8px;
    border: 0;
    border-right: 1px solid var(--c-line);
    background: transparent;
    text-align: center;
    cursor: pointer;
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--c-muted);
    transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.rules-tab:last-child { border-right: 0; }
.rules-tab:hover { color: var(--c-fg); background: rgba(10,10,10,0.03); }
.rules-tab.is-active {
    background: var(--c-fg);
    color: var(--c-bg);
}

/* bottom panel */
.rules-console__panel {
    padding: 32px 32px 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 320px;
}

.rules-panel__head {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-muted);
}
.rules-panel__label { color: var(--c-fg); }

.rules-panel__statement {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(20px, 2.4vw, 30px);
    line-height: 1.2;
    letter-spacing: -0.005em;
    color: var(--c-fg);
    max-width: 720px;
}

.rules-panel__body {
    display: grid;
    gap: 14px;
    padding-top: 16px;
    border-top: 1px solid var(--c-line);
    margin-top: 8px;
}

.rules-panel__row {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 24px;
    font-family: var(--f-mono);
    font-size: 13px;
    line-height: 1.6;
}

.rules-panel__key {
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-muted);
    padding-top: 3px;
}
.rules-panel__val { color: var(--c-fg); }

@media (max-width: 800px) {
    .rules-console__index {
        grid-template-columns: repeat(5, 1fr);
    }
    .rules-tab {
        padding: 12px 6px;
        font-size: 11px;
    }
    .rules-tab:nth-child(5) { border-right: 0; }
    .rules-tab:nth-child(-n+5) { border-bottom: 1px solid var(--c-line); }
    .rules-console__panel { padding: 24px 20px; gap: 16px; min-height: 0; }
    .rules-panel__row {
        grid-template-columns: 1fr;
        gap: 4px;
    }
}

/* ---------- BRIEF FORM ---------- */
.brief {
    display: grid;
    gap: 18px;
    max-width: 880px;
    font-family: var(--f-mono);
    font-size: 14px;
    line-height: 1.6;
    color: var(--c-fg-dark);
}

.brief__field {
    display: grid;
    grid-template-columns: 110px auto 1fr auto;
    align-items: start;
    gap: 12px;
    padding: 6px 0;
}

.brief__field--block {
    align-items: start;
}

.brief__key {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 11px;
    color: var(--c-muted-dark);
    padding-top: 4px;
}

.brief__bracket {
    color: var(--c-muted-dark);
    user-select: none;
    padding-top: 0;
    font-variant-numeric: tabular-nums;
    align-self: start;
}

/* closing bracket follows the bottom of the textarea */
.brief__field--block .brief__bracket:last-of-type {
    align-self: end;
}

.brief__slot {
    background: transparent;
    border: 0;
    outline: 0;
    padding: 0;
    font: inherit;
    color: var(--c-fg-dark);
    width: 100%;
    resize: none;
    line-height: 1.6;
}

.brief__slot::placeholder {
    color: var(--c-muted-dark);
    opacity: 1;
}

.brief__slot:focus::placeholder {
    color: transparent;
}

.brief__slot--area {
    min-height: 1.6em;
    overflow: hidden;
}

.brief__submit {
    justify-self: start;
    margin-top: 16px;
    margin-left: 122px;  /* aligns with slot start: 110 + 12 gap */
}

@media (max-width: 700px) {
    .brief__field {
        grid-template-columns: auto 1fr auto;
        grid-template-areas:
            "key key key"
            "br1 slot br2";
        gap: 8px;
    }
    .brief__key     { grid-area: key; }
    .brief__bracket:first-of-type { grid-area: br1; }
    .brief__slot    { grid-area: slot; }
    .brief__bracket:last-of-type  { grid-area: br2; }
    .brief__submit  { margin-left: 0; }
}

/* ---------- FOOTER ---------- */
.footer {
    padding: 32px var(--pad-x);
    background: var(--c-bg);
    color: var(--c-fg);
    border-top: 1px solid var(--c-line);
}

.footer__grid {
    max-width: var(--maxw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 24px;
}

.footer__left  { display: flex; align-items: center; justify-self: start; }
.footer__right { justify-self: end; }
.footer__logo  { display: inline-flex; align-items: center; }
.svg-mark      { height: 18px; width: auto; }

.footer__center {
    font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-muted);
    text-align: center;
}

.footer__version {
    font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--c-muted);
}

@media (max-width: 700px) {
    .footer__grid { grid-template-columns: 1fr; text-align: center; }
    .footer__left, .footer__right { justify-self: center; }
}

/* ---------- INTAKE MODAL ---------- */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(10,10,10,0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 200;
}

.modal[aria-hidden="false"] { display: flex; }

.modal__dialog {
    width: 100%;
    max-width: 720px;
    max-height: calc(100vh - 48px);
    background: var(--c-bg-dark);
    border: 1px solid var(--c-line-dark);
    color: var(--c-fg-dark);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat {
    display: flex;
    flex-direction: column;
    height: 80vh;
    max-height: 720px;
    min-height: 480px;
}

.chat__header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--c-line-dark);
    font-family: var(--f-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
}

.chat__header-label { color: var(--c-fg-dark); }
.chat__header-mode  { color: var(--c-muted-dark); margin-left: auto; }

.modal__close {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    line-height: 1;
    color: var(--c-muted-dark);
    transition: color 0.2s var(--ease);
}
.modal__close:hover { color: var(--c-fg-dark); }

.chat__body {
    flex: 1;
    overflow-y: auto;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-family: var(--f-mono);
    font-size: 13px;
    line-height: 1.6;
}

.chat__msg {
    max-width: 85%;
    padding: 12px 16px;
    border: 1px solid var(--c-line-dark);
    white-space: pre-wrap;
}

.chat__msg--bot {
    align-self: flex-start;
    background: transparent;
    color: var(--c-fg-dark);
}

.chat__msg--user {
    align-self: flex-end;
    background: var(--c-fg-dark);
    color: var(--c-bg-dark);
    border-color: var(--c-fg-dark);
}

.chat__msg--system {
    align-self: center;
    border: 0;
    color: var(--c-muted-dark);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 8px 0;
}

.chat__input-row {
    display: grid;
    grid-template-columns: 1fr 64px;
    border-top: 1px solid var(--c-line-dark);
}

.chat__input {
    background: transparent;
    color: var(--c-fg-dark);
    border: 0;
    padding: 16px 20px;
    font-family: var(--f-mono);
    font-size: 14px;
    outline: none;
}
.chat__input::placeholder { color: var(--c-muted-dark); }

.chat__send {
    background: transparent;
    color: var(--c-fg-dark);
    border-left: 1px solid var(--c-line-dark);
    font-size: 18px;
    transition: color 0.2s var(--ease);
}
.chat__send:hover { color: var(--c-muted-dark); }

/* ---------- GRIDMARKS (margin info layer) ---------- */
.gridmark {
    position: absolute;
    top: var(--pad-y);
    bottom: var(--pad-y);
    right: 16px;
    width: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
    font-family: var(--f-mono);
    font-size: 9px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-muted);
    z-index: 1;
}
.section--dark .gridmark { color: var(--c-muted-dark); }

.gridmark__top,
.gridmark__mid,
.gridmark__bot {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    white-space: nowrap;
}

.gridmark__mid {
    opacity: 0.6;
}

@media (max-width: 1100px) {
    .gridmark { display: none; }
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
    will-change: opacity, transform;
}
.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}