/* ============================================================
   Stock Alerts Case Study — slide deck engine
   Hand-rolled. No build step. Dark, projected, large type.
   Palette inherits the site's "warm espresso" dark theme.
   ============================================================ */

:root {
    --bg: #1B1712;
    --bg-2: #16130F;
    --surface: #262119;
    --surface-2: #2F2920;
    --border: #3D362B;
    --border-strong: #544A39;

    --text: #F4EFE6;
    --text-2: #B7AF9F;
    --text-3: #8A8272;

    --clay: #E3A47C;
    --clay-soft: rgba(227, 164, 124, 0.12);
    --clay-line: rgba(227, 164, 124, 0.38);

    --green: #7FC79A;
    --green-soft: rgba(127, 199, 154, 0.12);
    --green-line: rgba(127, 199, 154, 0.40);

    --amber: #F2C14E;
    --amber-soft: rgba(242, 193, 78, 0.12);
    --amber-line: rgba(242, 193, 78, 0.40);

    --red: #E8705C;
    --red-soft: rgba(232, 112, 92, 0.12);
    --red-line: rgba(232, 112, 92, 0.40);

    --blue: #83B4E2;
    --blue-soft: rgba(131, 180, 226, 0.12);
    --blue-line: rgba(131, 180, 226, 0.38);

    --font-display: 'Bricolage Grotesque', 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

    --radius: 14px;
    --radius-sm: 9px;
    --bar: 4px;
}

/* Fluid root size: 14px on a phone → ~22px on a projector */
html {
    font-size: clamp(14px, 1.02vw + 0.34vh + 5.5px, 22px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
    line-height: 1.5;
}

/* ---------------- chrome ---------------- */

.topbar,
.bottombar {
    position: fixed;
    left: 0;
    right: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 1.5rem;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    color: var(--text-3);
    background: linear-gradient(to bottom, var(--bg) 55%, transparent);
    pointer-events: none;
}

.topbar {
    top: 0;
}

.bottombar {
    bottom: 0;
    background: linear-gradient(to top, var(--bg) 55%, transparent);
}

.topbar a,
.topbar button,
.bottombar button {
    pointer-events: auto;
}

.topbar .home {
    color: var(--text-3);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 0.3rem 0.8rem;
    transition: 0.15s;
    white-space: nowrap;
}

.topbar .home:hover {
    color: var(--clay);
    border-color: var(--clay-line);
}

.deck-title {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-2);
    letter-spacing: 0;
    font-size: 0.82rem;
}

.spacer {
    flex: 1;
}

.chip {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-3);
    font: inherit;
    font-size: 0.7rem;
    border-radius: 50px;
    padding: 0.3rem 0.75rem;
    cursor: pointer;
    transition: 0.15s;
    white-space: nowrap;
}

.chip:hover {
    color: var(--text);
    border-color: var(--border-strong);
    background: var(--surface);
}

.chip.on {
    color: var(--clay);
    border-color: var(--clay-line);
    background: var(--clay-soft);
}

.progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--bar);
    background: var(--surface);
    z-index: 50;
}

.progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--clay), var(--amber));
    transition: width 0.28s cubic-bezier(.2, .8, .2, 1);
}

.counter {
    font-family: var(--font-mono);
    color: var(--text-2);
    font-size: 0.72rem;
}

.counter b {
    color: var(--clay);
    font-weight: 600;
}

.chapter-label {
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 0.66rem;
    letter-spacing: 0.12em;
}

.hint {
    font-size: 0.66rem;
    color: var(--text-3);
    opacity: 0.7;
}

kbd,
.kbd {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: 5px;
    padding: 0.05em 0.4em;
    color: var(--text-2);
}

/* ---------------- slides ---------------- */

#deck {
    position: relative;
    height: 100dvh;
}

.slide {
    display: none;
    position: absolute;
    inset: 0;
    place-items: center;
    padding: 4.2rem 3rem 3.4rem;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

.slide.active {
    display: grid;
    animation: rise 0.34s cubic-bezier(.2, .8, .2, 1);
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

.slide>.body {
    width: min(1180px, 100%);
    margin: auto;
}

/* Title / hero slides */
.slide.hero {
    background:
        radial-gradient(1000px 600px at 20% 0%, rgba(227, 164, 124, .10), transparent 60%),
        radial-gradient(800px 500px at 90% 100%, rgba(127, 199, 154, .08), transparent 60%);
}

.slide.divider {
    background: radial-gradient(900px 500px at 50% 50%, rgba(227, 164, 124, .09), transparent 65%);
}

.slide.divider .body {
    text-align: center;
}

.slide.divider .ch-num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--clay);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.slide.divider h2 {
    font-size: 3rem;
    border: 0;
    padding: 0;
    margin: 0.6rem 0 0.8rem;
}

.slide.divider h2::after {
    display: none;
}

/* ---------------- typography ---------------- */

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--clay);
    margin-bottom: 0.9rem;
}

.eyebrow.green {
    color: var(--green);
}

.eyebrow.blue {
    color: var(--blue);
}

.eyebrow.red {
    color: var(--red);
}

h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 3.5rem;
    line-height: 1.04;
    letter-spacing: -0.025em;
}

h1 .accent {
    color: var(--clay);
}

h2 {
    font-family: var(--font-display);
    font-weight: 650;
    font-size: 2rem;
    line-height: 1.14;
    letter-spacing: -0.02em;
    margin-bottom: 1.4rem;
    position: relative;
    padding-bottom: 0.7rem;
}

h2::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 3.2rem;
    height: 3px;
    border-radius: 3px;
    background: var(--clay);
}

h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-2);
    font-size: 1.02rem;
}

p+p {
    margin-top: 0.8rem;
}

.lead {
    font-size: 1.3rem;
    line-height: 1.5;
    color: var(--text);
    max-width: 44ch;
}

.lead.wide {
    max-width: 62ch;
}

.sub {
    font-size: 1.05rem;
    color: var(--text-3);
    margin-top: 1rem;
}

strong,
b {
    color: var(--text);
    font-weight: 600;
}

em {
    color: var(--clay);
    font-style: italic;
}

a {
    color: var(--clay);
}

.big-quote {
    font-family: var(--font-display);
    font-size: 2.2rem;
    line-height: 1.28;
    letter-spacing: -0.02em;
    color: var(--text);
    max-width: 22ch;
}

.tiny {
    font-size: 0.78rem;
    color: var(--text-3);
}

.mono {
    font-family: var(--font-mono);
}

.sku {
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--blue);
    white-space: nowrap;
}

/* ---------------- layout helpers ---------------- */

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.9rem;
}

.split {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 2rem;
    align-items: center;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.mt {
    margin-top: 1.2rem;
}

.mt-s {
    margin-top: 0.6rem;
}

.center {
    text-align: center;
}

/* ---------------- cards ---------------- */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.15rem 1.25rem;
}

.card p {
    font-size: 0.92rem;
}

.card.clay {
    border-color: var(--clay-line);
    background: linear-gradient(var(--clay-soft), var(--clay-soft)), var(--surface);
}

.card.green {
    border-color: var(--green-line);
    background: linear-gradient(var(--green-soft), var(--green-soft)), var(--surface);
}

.card.amber {
    border-color: var(--amber-line);
    background: linear-gradient(var(--amber-soft), var(--amber-soft)), var(--surface);
}

.card.red {
    border-color: var(--red-line);
    background: linear-gradient(var(--red-soft), var(--red-soft)), var(--surface);
}

.card.blue {
    border-color: var(--blue-line);
    background: linear-gradient(var(--blue-soft), var(--blue-soft)), var(--surface);
}

.card .num {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--clay);
    letter-spacing: 0.14em;
    display: block;
    margin-bottom: 0.35rem;
}

.card.green .num {
    color: var(--green);
}

.card.amber .num {
    color: var(--amber);
}

.card.red .num {
    color: var(--red);
}

.card.blue .num {
    color: var(--blue);
}

/* Callouts */
.callout {
    border-left: 3px solid var(--clay);
    background: var(--surface);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0.85rem 1.1rem;
    font-size: 0.95rem;
    color: var(--text-2);
}

.callout b {
    color: var(--text);
}

.callout.fail {
    border-color: var(--red);
    background: linear-gradient(var(--red-soft), var(--red-soft)), var(--surface);
}

.callout.fix {
    border-color: var(--green);
    background: linear-gradient(var(--green-soft), var(--green-soft)), var(--surface);
}

.callout.warn {
    border-color: var(--amber);
    background: linear-gradient(var(--amber-soft), var(--amber-soft)), var(--surface);
}

.callout.info {
    border-color: var(--blue);
    background: linear-gradient(var(--blue-soft), var(--blue-soft)), var(--surface);
}

/* Plain-English gloss for jargon */
.gloss {
    display: inline-flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
    background: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.8rem;
    font-size: 0.86rem;
    color: var(--text-3);
}

.gloss b {
    font-family: var(--font-mono);
    color: var(--blue);
    font-weight: 500;
}

.gloss::before {
    content: "plain English";
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-3);
    opacity: 0.65;
}

/* Sticky note (the client brief) */
.sticky {
    background: linear-gradient(160deg, #F2C14E, #E3A24E);
    color: #2B2210;
    border-radius: 4px;
    padding: 1.6rem 1.7rem;
    transform: rotate(-1.1deg);
    box-shadow: 0 18px 44px rgba(0, 0, 0, .38);
    max-width: 40rem;
}

.sticky h3 {
    color: #2B2210;
    font-size: 1.15rem;
    margin-bottom: 0.9rem;
}

.sticky ol {
    margin: 0 0 0 1.1rem;
}

.sticky li {
    margin-bottom: 0.7rem;
    font-size: 0.98rem;
    line-height: 1.45;
}

.sticky li strong {
    color: #2B2210;
}

.sticky .ps {
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px dashed rgba(43, 34, 16, .4);
    font-size: 0.95rem;
    font-style: italic;
}

/* lists */
ul.ticks,
ul.plain {
    list-style: none;
}

ul.ticks li,
ul.plain li {
    position: relative;
    padding-left: 1.6rem;
    margin-bottom: 0.6rem;
    color: var(--text-2);
    font-size: 0.98rem;
}

ul.ticks li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--green);
    font-weight: 700;
}

ul.plain li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--text-3);
}

ol.steps {
    list-style: none;
    counter-reset: s;
}

ol.steps li {
    counter-increment: s;
    position: relative;
    padding-left: 2.4rem;
    margin-bottom: 0.85rem;
    color: var(--text-2);
    font-size: 0.98rem;
}

ol.steps li::before {
    content: counter(s);
    position: absolute;
    left: 0;
    top: -0.05em;
    width: 1.6rem;
    height: 1.6rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--clay-soft);
    border: 1px solid var(--clay-line);
    color: var(--clay);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

/* ---------------- the signature options table ---------------- */

.opt-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

table.opt {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    background: var(--surface);
}

table.opt th {
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-3);
    padding: 0.7rem 0.9rem;
    border-bottom: 1px solid var(--border-strong);
    background: var(--bg-2);
    white-space: nowrap;
}

table.opt td {
    padding: 0.75rem 0.9rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    vertical-align: top;
    line-height: 1.42;
}

table.opt tr:last-child td {
    border-bottom: 0;
}

table.opt td.opt-name {
    color: var(--text);
    font-weight: 600;
    min-width: 9rem;
}

table.opt td.for {
    color: #A9CDB6;
}

table.opt td.against {
    color: #D9A79C;
}

table.opt tr.chosen {
    background: linear-gradient(var(--green-soft), var(--green-soft));
}

table.opt tr.chosen td.opt-name {
    box-shadow: inset 3px 0 0 var(--green);
}

table.opt tr.runner {
    background: linear-gradient(var(--amber-soft), var(--amber-soft));
}

table.opt tr.runner td.opt-name {
    box-shadow: inset 3px 0 0 var(--amber);
}

.v {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.05em;
    padding: 0.14em 0.5em;
    border-radius: 50px;
    margin-bottom: 0.3rem;
    white-space: nowrap;
}

.v-yes {
    background: var(--green-soft);
    border: 1px solid var(--green-line);
    color: var(--green);
}

.v-no {
    background: var(--red-soft);
    border: 1px solid var(--red-line);
    color: var(--red);
}

.v-maybe {
    background: var(--amber-soft);
    border: 1px solid var(--amber-line);
    color: var(--amber);
}

.v-note {
    display: block;
    font-size: 0.78rem;
    color: var(--text-3);
    line-height: 1.35;
}

/* generic data table (movements, reports) */
table.data {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

table.data th {
    background: var(--bg-2);
    color: var(--text-3);
    text-align: left;
    padding: 0.55rem 0.75rem;
    font-weight: 500;
    border-bottom: 1px solid var(--border-strong);
    white-space: nowrap;
}

table.data td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    white-space: nowrap;
}

table.data tr:last-child td {
    border-bottom: 0;
}

table.data tr.bad td {
    background: var(--red-soft);
    color: #F0B4A9;
}

table.data tr.warnrow td {
    background: var(--amber-soft);
}

table.data tr.okrow td {
    background: var(--green-soft);
}

table.data .neg {
    color: var(--red);
    font-weight: 600;
}

/* ---------------- napkin diagram (identical every time) ---------------- */

.napkin {
    background:
        repeating-linear-gradient(0deg, transparent, transparent 22px, rgba(255, 255, 255, .028) 22px, rgba(255, 255, 255, .028) 23px),
        var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1.3rem 1.3rem;
    position: relative;
}

.napkin-clock {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    color: var(--amber);
    background: var(--amber-soft);
    border: 1px dashed var(--amber-line);
    border-radius: 50px;
    padding: 0.28rem 0.8rem;
    margin: 0 auto 1.1rem;
}

.napkin-clock.wrap {
    display: flex;
    width: fit-content;
}

.napkin-row {
    display: flex;
    align-items: stretch;
    gap: 0.4rem;
}

.nbox {
    flex: 1;
    min-width: 0;
    background: var(--surface);
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 0.8rem 0.7rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.3rem;
    transition: 0.2s;
}

.nbox .q {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-3);
}

.nbox b {
    font-size: 0.86rem;
    line-height: 1.25;
    color: var(--text-2);
    font-weight: 600;
}

.nbox .sub {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-3);
    margin: 0;
}

.nbox.pipe {
    flex: 0.72;
    background: none;
    border-style: dashed;
}

.nbox.lit {
    border-color: var(--green);
    background: linear-gradient(var(--green-soft), var(--green-soft)), var(--surface);
}

.nbox.lit b {
    color: var(--text);
}

.nbox.lit .q {
    color: var(--green);
}

.nbox.next {
    border-color: var(--amber);
    background: linear-gradient(var(--amber-soft), var(--amber-soft)), var(--surface);
}

.nbox.next .q {
    color: var(--amber);
}

.nbox.dim {
    opacity: 0.42;
}

.narrow {
    flex: 0 0 1.5rem;
    display: grid;
    place-items: center;
    color: var(--text-3);
    font-size: 1rem;
}

.napkin-back {
    margin-top: 0.7rem;
    border-top: 1.5px dashed var(--border-strong);
    padding-top: 0.5rem;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-3);
    letter-spacing: 0.06em;
}

.napkin-back.ghost {
    opacity: 0.3;
}

.napkin-cap {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-3);
    margin-top: 0.9rem;
}

/* four questions strip */
.q4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
}

.q4 .qcell {
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--clay);
    border-radius: var(--radius-sm);
    padding: 1rem;
}

.q4 .qcell .n {
    font-family: var(--font-mono);
    color: var(--clay);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
}

.q4 .qcell h3 {
    font-size: 1.02rem;
    margin: 0.4rem 0 0.35rem;
}

.q4 .qcell p {
    font-size: 0.84rem;
    color: var(--text-3);
}

.q4 .qcell .ans {
    margin-top: 0.7rem;
    padding-top: 0.6rem;
    border-top: 1px dashed var(--border-strong);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--green);
    line-height: 1.4;
}

/* loop diagram */
.loop {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.loop .step {
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 50px;
    padding: 0.6rem 1.1rem;
    font-size: 0.88rem;
    color: var(--text-2);
    font-weight: 500;
}

.loop .step.hi {
    border-color: var(--clay-line);
    background: linear-gradient(var(--clay-soft), var(--clay-soft)), var(--surface);
    color: var(--text);
}

.loop .arr {
    color: var(--text-3);
}

/* fake VS Code / editor chrome */
.editor {
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-2);
    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.editor .bar {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.8rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.editor .dot {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    background: var(--border-strong);
}

.editor .bar span {
    margin-left: 0.6rem;
    color: var(--text-3);
    font-size: 0.68rem;
}

.editor .cols {
    display: grid;
    grid-template-columns: 0.8fr 1.4fr 1.2fr;
    min-height: 12rem;
}

.editor .pane {
    padding: 0.75rem;
    border-right: 1px solid var(--border);
    color: var(--text-3);
    line-height: 1.7;
}

.editor .pane:last-child {
    border-right: 0;
}

.editor .pane .tag {
    display: block;
    font-size: 0.6rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--clay);
    margin-bottom: 0.5rem;
}

.editor .pane.chat .tag {
    color: var(--green);
}

.editor .pane.term .tag {
    color: var(--amber);
}

.editor .you {
    color: var(--text);
}

.editor .cc {
    color: var(--green);
}

/* messy spreadsheet mock */
.sheet {
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.sheet table {
    width: 100%;
    border-collapse: collapse;
}

.sheet td,
.sheet th {
    border: 1px solid var(--border);
    padding: 0.35rem 0.5rem;
    color: var(--text-2);
    white-space: nowrap;
}

.sheet th {
    background: var(--surface-2);
    color: var(--text-3);
    font-weight: 500;
}

.sheet .rowhead {
    background: var(--surface-2);
    color: var(--text-3);
    text-align: center;
    width: 2rem;
}

.sheet .merged {
    background: var(--amber-soft);
    text-align: center;
    color: var(--amber);
}

.sheet .totals {
    background: var(--red-soft);
    color: var(--red);
    font-weight: 600;
}

.sheet .note {
    color: var(--text-3);
    font-style: italic;
}

.annot {
    display: flex;
    gap: 0.5rem;
    align-items: baseline;
    font-size: 0.82rem;
    color: var(--text-2);
    margin-bottom: 0.45rem;
}

.annot .pin {
    flex: 0 0 auto;
    width: 1.15rem;
    height: 1.15rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--red-soft);
    border: 1px solid var(--red-line);
    color: var(--red);
    font-family: var(--font-mono);
    font-size: 0.6rem;
}

/* ---------------- code + prompt blocks ---------------- */

pre {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.95rem 1.1rem;
    overflow-x: auto;
    font-size: 0.78rem;
    line-height: 1.6;
}

pre code {
    font-family: var(--font-mono);
    background: none;
    padding: 0;
}

code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 0.08em 0.34em;
    color: var(--clay);
}

.prompt {
    border: 1px solid var(--clay-line);
    border-radius: var(--radius-sm);
    background: linear-gradient(var(--clay-soft), var(--clay-soft)), var(--bg-2);
    overflow: hidden;
}

.prompt .phead {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 0.8rem;
    border-bottom: 1px solid var(--clay-line);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--clay);
}

.prompt .phead .spacer {
    flex: 1;
}

.copy {
    background: none;
    border: 1px solid var(--clay-line);
    color: var(--clay);
    border-radius: 50px;
    font: inherit;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    padding: 0.16rem 0.6rem;
    cursor: pointer;
}

.copy:hover {
    background: var(--clay-soft);
}

.prompt pre {
    border: 0;
    background: none;
    border-radius: 0;
    white-space: pre-wrap;
    color: var(--text);
    font-size: 0.8rem;
}

.bad-good {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.bad-good .box {
    border-radius: var(--radius-sm);
    padding: 1rem 1.1rem;
    border: 1px solid var(--border);
    background: var(--surface);
}

.bad-good .box.bad {
    border-color: var(--red-line);
    background: linear-gradient(var(--red-soft), var(--red-soft)), var(--surface);
}

.bad-good .box.good {
    border-color: var(--green-line);
    background: linear-gradient(var(--green-soft), var(--green-soft)), var(--surface);
}

.bad-good .box h3 {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.bad-good .box.bad h3 {
    color: var(--red);
}

.bad-good .box.good h3 {
    color: var(--green);
}

.bad-good .box .txt {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    line-height: 1.6;
    color: var(--text);
    white-space: pre-wrap;
}

/* terminal output */
.term-out {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1.1rem;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    line-height: 1.65;
    color: var(--text-2);
    overflow-x: auto;
    white-space: pre;
}

.term-out .g {
    color: var(--green);
}

.term-out .r {
    color: var(--red);
}

.term-out .a {
    color: var(--amber);
}

.term-out .d {
    color: var(--text-3);
}

/* email / LINE mock */
.msg {
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    overflow: hidden;
    font-size: 0.8rem;
}

.msg .mhead {
    padding: 0.6rem 0.9rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-2);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-3);
}

.msg .mbody {
    padding: 0.9rem;
    color: var(--text-2);
    line-height: 1.55;
}

.msg .mbody h4 {
    color: var(--text);
    font-size: 0.92rem;
    margin-bottom: 0.5rem;
}

/* ---------------- video slides ---------------- */

.video-split {
    display: grid;
    grid-template-columns: 1.62fr 1fr;
    gap: 1.6rem;
    align-items: start;
}

/* Facade: nothing is requested from YouTube until Play is pressed. */
.vid {
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-strong);
    background:
        radial-gradient(700px 400px at 30% 0%, rgba(227, 164, 124, .10), transparent 62%),
        var(--bg-2);
}

.vid-face {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.9rem;
    padding: 1.6rem;
    background: none;
    border: 0;
    color: inherit;
    font: inherit;
    text-align: center;
    cursor: pointer;
    transition: background .18s;
}

.vid-face:hover {
    background: rgba(227, 164, 124, .05);
}

.vid-play {
    width: 4.2rem;
    height: 4.2rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--clay);
    box-shadow: 0 10px 34px rgba(0, 0, 0, .45);
    transition: transform .18s cubic-bezier(.2, .8, .2, 1);
}

.vid-face:hover .vid-play {
    transform: scale(1.08);
}

.vid-play::before {
    content: "";
    border-style: solid;
    border-width: 0.62rem 0 0.62rem 1.05rem;
    border-color: transparent transparent transparent var(--bg-2);
    margin-left: 0.22rem;
}

.vid-face .vid-title {
    display: block;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.1rem;
    line-height: 1.25;
    max-width: 32ch;
    color: var(--text);
}

.vid-face .vhint {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-3);
}

.vid iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.vid-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border-radius: 50px;
}

.vid-badge.official {
    color: var(--green);
    background: var(--green-soft);
    border: 1px solid var(--green-line);
}

.vid-badge.community {
    color: var(--amber);
    background: var(--amber-soft);
    border: 1px solid var(--amber-line);
}

.vid-badge.conference {
    color: var(--blue);
    background: var(--blue-soft);
    border: 1px solid var(--blue-line);
}

.vid-side .card {
    margin-bottom: 0.9rem;
}

.vid-link {
    display: inline-block;
    margin-top: 0.5rem;
    font-size: 0.78rem;
    color: var(--text-3);
    text-decoration: none;
    border-bottom: 1px dashed var(--border-strong);
}

.vid-link:hover {
    color: var(--clay);
}

.outline-vid {
    color: var(--clay);
    margin-right: 0.3rem;
}

@media (max-width: 860px) {
    .video-split {
        grid-template-columns: 1fr;
    }
}

@media print {
    .vid {
        aspect-ratio: auto;
        min-height: 7rem;
    }
}

/* ---------------- notes / outline / help panels ---------------- */

#notes-panel,
#outline {
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 60;
    background: var(--bg-2);
    border-left: 1px solid var(--border-strong);
    width: min(30rem, 92vw);
    padding: 1.4rem 1.5rem;
    overflow-y: auto;
    transform: translateX(101%);
    transition: transform 0.25s cubic-bezier(.2, .8, .2, 1);
    box-shadow: -24px 0 60px rgba(0, 0, 0, .5);
}

#notes-panel {
    right: 0;
}

#outline {
    left: 0;
    right: auto;
    border-left: 0;
    border-right: 1px solid var(--border-strong);
    transform: translateX(-101%);
    box-shadow: 24px 0 60px rgba(0, 0, 0, .5);
}

#notes-panel.open,
#outline.open {
    transform: none;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.64rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--clay);
    margin-bottom: 1rem;
    padding-bottom: 0.7rem;
    border-bottom: 1px solid var(--border);
}

#notes-body {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--text-2);
}

#notes-body p+p {
    margin-top: 0.8rem;
}

#notes-body .empty {
    color: var(--text-3);
    font-style: italic;
}

#outline ol {
    list-style: none;
    counter-reset: o;
}

#outline li {
    counter-increment: o;
}

#outline button {
    display: flex;
    gap: 0.7rem;
    width: 100%;
    text-align: left;
    background: none;
    border: 0;
    border-radius: 6px;
    color: var(--text-2);
    font: inherit;
    font-size: 0.82rem;
    padding: 0.4rem 0.5rem;
    cursor: pointer;
}

#outline button:hover {
    background: var(--surface);
    color: var(--text);
}

#outline button.cur {
    color: var(--clay);
    background: var(--clay-soft);
}

#outline button .n {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-3);
    flex: 0 0 1.6rem;
    text-align: right;
}

#outline .ch {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-3);
    margin: 0.9rem 0 0.3rem 2.3rem;
}

#help {
    position: fixed;
    inset: 0;
    z-index: 70;
    background: rgba(10, 8, 6, .82);
    backdrop-filter: blur(6px);
    display: none;
    place-items: center;
}

#help.open {
    display: grid;
}

#help .box {
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 1.6rem 1.8rem;
    min-width: min(28rem, 90vw);
}

#help dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.55rem 1.2rem;
    align-items: center;
    font-size: 0.88rem;
}

#help dd {
    color: var(--text-2);
}

.notes-dot {
    display: inline-block;
    width: 0.4rem;
    height: 0.4rem;
    border-radius: 50%;
    background: var(--amber);
    margin-left: 0.35rem;
    vertical-align: middle;
}

aside.notes {
    display: none;
}

/* ---------------- responsive ---------------- */

@media (max-width: 860px) {
    .slide {
        padding: 4rem 1.1rem 3.4rem;
        place-items: start center;
    }

    h1 {
        font-size: 2.4rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    .big-quote {
        font-size: 1.6rem;
        max-width: none;
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .split,
    .bad-good,
    .q4 {
        grid-template-columns: 1fr;
    }

    .napkin-row {
        flex-direction: column;
    }

    .narrow {
        flex: 0 0 1.1rem;
        transform: rotate(90deg);
    }

    .editor .cols {
        grid-template-columns: 1fr;
    }

    .deck-title,
    .hint {
        display: none;
    }
}

/* ---------------- print / PDF export ---------------- */

@media print {

    .topbar,
    .bottombar,
    .progress,
    #notes-panel,
    #outline,
    #help {
        display: none !important;
    }

    body,
    #deck {
        overflow: visible;
        height: auto;
    }

    .slide {
        display: grid !important;
        position: relative;
        inset: auto;
        page-break-after: always;
        height: 100vh;
        animation: none;
    }
}

/* ---------------- highlight.js tokens (warm) ---------------- */

.hljs-keyword,
.hljs-built_in,
.hljs-selector-tag {
    color: #E3A47C;
}

.hljs-string,
.hljs-attr {
    color: #A9CDB6;
}

.hljs-number,
.hljs-literal {
    color: #F2C14E;
}

.hljs-comment {
    color: #7A7263;
    font-style: italic;
}

.hljs-title,
.hljs-function .hljs-title,
.hljs-section {
    color: #83B4E2;
}

.hljs-params {
    color: #E7E1D6;
}

.hljs-variable,
.hljs-name {
    color: #E7E1D6;
}

.hljs-meta {
    color: #8A8272;
}

.hljs-bullet,
.hljs-symbol {
    color: #E8705C;
}