/* NEÓN by ChatterLand: landing and legal pages.
   Tokens mirror the app (docs/LECTO-6/mockups/neon.html): one colour, one meaning. */
:root {
    --ink: #0A0918;
    --ink2: #110F26;
    --panel: #17143A;
    --panel2: #221E4A;
    --line: #332E63;
    --txt: #F2F0FF;
    --mut: #B3AEDB;
    --dim: #9590C4;
    --lime: #C6FF4A;
    --lime-ink: #1A2600;
    --ok-bg: #1E2A0A;
    --cyan: #45E3F3;
    --act: #7C3AED;
    --act-d: #5B21B6;
    --act-l: #B9A2FF;
    --volt: #FFC857;
    --disp: 'Chakra Petch', system-ui, sans-serif;
    --body: 'Lexend', system-ui, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, monospace;
    --wrap: 1120px;

    /* Motion: same easings as the ChatterLand home */
    --ease-out: cubic-bezier(.2, .7, .2, 1);
    --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
    --ease-io: cubic-bezier(.65, 0, .35, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }

body {
    background: var(--ink);
    color: var(--txt);
    font: 400 1rem/1.6 var(--body);
    -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
[hidden] { display: none !important; }
a { color: var(--act-l); text-underline-offset: 3px; }
a:hover { color: var(--txt); }
strong, b { font-weight: 600; }

:focus-visible {
    outline: 3px solid var(--lime);
    outline-offset: 3px;
    border-radius: 6px;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 10px 16px;
    background: var(--lime);
    color: var(--lime-ink);
    font-weight: 600;
    border-radius: 10px;
    text-decoration: none;
}
.skip-link:focus { top: 12px; }
.skip-link:hover { color: var(--lime-ink); }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- brand ---------- */
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--txt);
    text-decoration: none;
}
.logo {
    color: var(--txt);
    font: 700 1.75rem/1 var(--disp);
    letter-spacing: 1px;
    padding-top: 8px;
}
/* The accent is the brand: the app's lime wave tilde over the O (NeonTilde in the panel, NeonLogo in the app). */
.logo .o { position: relative; display: inline-block; }
.logo .tilde {
    position: absolute;
    left: 50%;
    top: -0.27em;
    width: 0.62em;
    height: 0.29em;
    overflow: visible;
    transform: translateX(-42%) rotate(-24deg);
}
.logo .tilde path { stroke: var(--lime); stroke-width: 6; fill: none; stroke-linecap: round; }
.logo-xl { font-size: clamp(3.5rem, 12vw, 6rem); }
.logo-xl .tilde path { stroke-dasharray: 80; animation: wave 2.4s ease-in-out 1 both; }
@keyframes wave { 0% { stroke-dashoffset: 80; } 100% { stroke-dashoffset: 0; } }

.badge {
    display: inline-block;
    padding: 2px 10px;
    border: 1.5px solid #6E9A18;
    border-radius: 999px;
    background: var(--ok-bg);
    color: var(--lime);
    font: 500 0.75rem/1.5 var(--mono);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.by {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 32px;
    font: 500 0.875rem var(--body);
    color: var(--mut);
    text-decoration: none;
}
.by img { width: 20px; height: 20px; border-radius: 4px; }
a.by:hover { color: var(--txt); text-decoration: underline; }

/* ---------- header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 9, 24, 0.92);
    border-bottom: 1px solid var(--line);
}
@supports (backdrop-filter: blur(8px)) {
    .site-header { background: rgba(10, 9, 24, 0.8); backdrop-filter: blur(8px); }
}
.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
}
.header-brand { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.header-brand .by { display: none; }
@media (min-width: 420px) { .header-brand .by { display: inline-flex; } }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a:not(.btn) {
    display: none;
    padding: 10px 12px;
    color: var(--mut);
    text-decoration: none;
    font-size: 0.95rem;
}
.site-nav a:not(.btn):hover { color: var(--txt); }

/* ---------- buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 14px;
    font: 700 1rem/1 var(--disp);
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    border: 0;
    background: none;
    cursor: pointer;
    transition: transform 0.12s, box-shadow 0.2s;
}
.btn:active { transform: translateY(2px); }
.btn-act { background: var(--act); color: #fff; box-shadow: 0 4px 0 var(--act-d); }
.btn-act:hover { color: #fff; box-shadow: 0 4px 0 var(--act-d), 0 0 0 6px rgba(185, 162, 255, 0.18); }
.btn-ghost { border: 1.5px solid var(--line); color: var(--txt); }
.btn-ghost:hover { border-color: var(--act-l); color: var(--txt); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 0.85rem; }

/* ---------- sections ---------- */
section { padding: 72px 0; }
section + section { border-top: 1px solid var(--line); }
.eyebrow {
    font: 500 0.8rem var(--mono);
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--act-l);
}
/* Sentence case for headings; uppercase only for short labels (logo, eyebrows, buttons, game names). */
h1, h2, h3 { font-family: var(--disp); font-weight: 700; line-height: 1.15; }
h2 { font-size: clamp(1.75rem, 5vw, 2.5rem); margin: 8px 0 12px; }
h3 { font-size: 1.25rem; letter-spacing: 0.5px; }
em.hl { font-style: normal; color: var(--lime); }
.lead { font-size: 1.125rem; color: var(--mut); max-width: 62ch; }
.lead-wide { max-width: none; }

/* ---------- hero ---------- */
.hero {
    padding: 48px 0 64px;
    background: radial-gradient(120% 70% at 70% 100%, #221A5C 0%, var(--ink) 65%);
}
.hero .wrap { display: grid; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(2.1rem, 7.5vw, 3.75rem); margin-bottom: 18px; }
.hero .lead { margin-bottom: 28px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.price-note { margin-top: 24px; font-size: 0.95rem; color: var(--mut); }
.price-note strong { color: var(--txt); }
.hero-visual { position: relative; display: flex; justify-content: center; align-items: flex-end; gap: 16px; }

/* Device frame: even bezel on every side, the whole screenshot visible, neutral shadow */
.phone {
    width: min(260px, 70vw);
    padding: 9px;
    border-radius: 42px;
    background: #1C1B22;
    outline: 1px solid #3A3746;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}
.phone img { width: 100%; height: auto; border-radius: 33px; }
.hero-visual .phone + .phone { display: none; }

/* ---------- about ---------- */
.about-grid { display: grid; gap: 16px; margin-top: 28px; }
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 24px;
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--mut); }

/* ---------- exercises ---------- */
.ex-grid { list-style: none; display: grid; gap: 14px; margin-top: 28px; }
.ex {
    display: block;
    gap: 16px;
    align-items: flex-start;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 20px;
}
.ex h3 { font-size: 1.15rem; text-transform: uppercase; letter-spacing: 0.5px; }
.ex .what { display: block; font: 500 0.8rem var(--mono); letter-spacing: 1px; color: var(--act-l); margin: 4px 0 6px; text-transform: uppercase; }
.ex p { color: var(--mut); font-size: 0.95rem; }

.ex { position: relative; display: flex; flex-direction: column; overflow: hidden; }
/* Phones: the screenshot sits beside the text; desktop: under it, aligned to the bottom of the card */
.ex-shot { display: grid; grid-template-columns: 1fr 112px; grid-auto-rows: min-content; column-gap: 16px; }
.ex-shot > :not(.phone) { grid-column: 1; }
.ex-shot .phone { grid-column: 2; grid-row: 1 / span 4; width: 112px; padding: 4px; border-radius: 20px; box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4); }
.ex-shot .phone img { border-radius: 16px; }
@media (min-width: 900px) {
    .ex-shot { display: flex; }
    .ex-shot .phone { width: 180px; margin: auto auto 0; padding: 7px; border-radius: 32px; }
    .ex-shot .phone img { border-radius: 26px; }
    .ex-shot p { margin-bottom: 20px; }
}

/* ---------- rewards ---------- */
.rewards { list-style: none; display: flex; gap: 28px; margin-top: 36px; overflow-x: auto; padding: 12px 10px 20px; scroll-snap-type: x mandatory; }
.rewards li { flex: none; width: 240px; scroll-snap-align: center; }
.rewards .phone { width: 100%; }
.rewards h3 { margin-top: 22px; font-size: 1.15rem; }
.rewards p { margin-top: 6px; color: var(--mut); font-size: 0.95rem; }

/* ---------- steps ---------- */
.steps { list-style: none; display: grid; gap: 16px; margin-top: 28px; counter-reset: step; }
.steps { position: relative; }
.steps li { counter-increment: step; position: relative; padding: 24px 24px 24px 76px; }
.steps li::before, .steps li::after {
    content: "0" counter(step);
    position: absolute;
    z-index: 2;
    left: 24px;
    top: 22px;
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 6px;
    background: var(--panel2);
    color: var(--lime);
    font: 500 0.85rem var(--mono);
}
.steps li::after { background: var(--lime); color: var(--lime-ink); }

/* ---------- city ---------- */
.city { padding-block: 72px; background: radial-gradient(100% 80% at 20% 0%, #1B1650 0%, var(--ink) 70%); }
.city .wrap { display: grid; gap: 32px; align-items: center; max-width: 960px; }
.city .phone { margin-inline: auto; }
.volt { color: var(--volt); }

/* ---------- panel ---------- */
.checks { list-style: none; display: grid; gap: 12px; margin-top: 24px; }
.checks li { position: relative; padding-left: 34px; color: var(--mut); }
.checks li strong { color: var(--txt); }
.checks li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.3em;
    width: 18px;
    height: 14px;
    border-radius: 4px;
    background: var(--cyan);
}
.note-box {
    margin-top: 32px;
    padding: 20px 24px;
    border: 1px solid var(--line);
    background: var(--ink2);
    border-radius: 16px;
}
/* A lit window marks the key line, as in the app. */
.note-box > p:first-child strong:first-child::before {
    content: "";
    display: inline-block;
    width: 14px;
    height: 11px;
    margin-right: 10px;
    border-radius: 3px;
    background: var(--lime);
}
.note-box p { color: var(--mut); }
.note-box p + p { margin-top: 8px; }
.note-box strong { color: var(--txt); }

/* ---------- cta + support ---------- */
.cta-box {
    text-align: center;
    background: linear-gradient(170deg, #241C66 0%, #16123C 70%);
    border: 1px solid #3F358E;
    border-radius: 28px;
    padding: 48px 24px;
}
.cta-box .lead { margin: 0 auto 28px; }
.cta-box .cta-row { justify-content: center; }

/* ---------- from the makers of ChatterLand: light island, ChatterLand palette ---------- */
.makers-box {
    display: grid;
    gap: 28px;
    align-items: center;
    padding: 28px 24px;
    border-radius: 16px;
    background: #FAFAFA;
    border: 1px solid #E2E8F0;
    color: #3D2E5D;
}
.makers-visual { display: flex; justify-content: center; }
.makers-visual .app-phone { font-size: 8px; }
.makers-eyebrow { font: 600 0.9rem var(--body); color: #6D28D9; margin-bottom: 6px; }
.makers-text h2 { color: #3D2E5D; font-family: var(--body); font-weight: 600; font-size: clamp(1.5rem, 4vw, 2rem); margin: 0 0 10px; }
.makers-text p { color: #4A4560; max-width: 60ch; }
.makers-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 48px;
    margin: 20px 0 16px;
    padding: 0 22px;
    border-radius: 12px;
    background: #7C3AED;
    color: #fff;
    font-weight: 600;
    text-decoration: none;
}
.makers-btn:hover { background: #6D28D9; color: #fff; }
.makers-box :focus-visible { outline-color: #7C3AED; }
.makers-note { font-size: 0.95rem; }
.makers-note strong { color: #3D2E5D; }

/* ---------- coming soon + beta sign-up ---------- */
.soon {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-top: 24px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: var(--ink2);
    color: var(--mut);
    max-width: 560px;
}
.soon-icon { flex: none; width: 22px; height: 22px; fill: var(--lime); margin-top: 2px; }
.soon strong { color: var(--txt); }
.soon a { font-weight: 600; }
.beta-grid { display: grid; gap: 32px; }
.beta-grid .checks { margin-top: 20px; }
.beta-form { display: grid; gap: 18px; }
.field { border: 0; display: grid; gap: 6px; align-content: start; }
.field label, .field legend { font-weight: 600; color: var(--txt); }
.field legend { margin-bottom: 6px; }
.field-hint { color: var(--mut); font-size: 0.9rem; }
.optional { font-weight: 400; color: var(--mut); }
.field input[type=email], .field input[type=text], .field input[type=tel], .field textarea {
    min-height: 48px;
    padding: 0 14px;
    border-radius: 12px;
    border: 1.5px solid #6B64A8;
    background: var(--ink2);
    color: var(--txt);
    font: inherit;
    font-size: 16px;
}
.field input[type=email]:focus-visible, .field input[type=text]:focus-visible, .field input[type=tel]:focus-visible, .field textarea:focus-visible {
    outline: none;
    border: 2px solid var(--act-l);
    box-shadow: 0 0 0 4px rgba(185, 162, 255, 0.25);
}
.field.is-invalid input[type=email], .field.is-invalid input[type=text], .field.is-invalid input[type=tel] { border: 2px solid #FF9C9C; }
.field.is-invalid .option { border-color: #FF9C9C; }
.field textarea { padding: 12px 14px; resize: vertical; }
.options { display: flex; flex-wrap: wrap; gap: 8px; }
.option {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 14px;
    border-radius: 12px;
    border: 1.5px solid #6B64A8;
    font-weight: 400 !important;
    cursor: pointer;
}
.option:has(input:checked) { border-color: var(--act-l); background: var(--panel2); }
.option input, .consent input { accent-color: var(--act); width: 18px; height: 18px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-weight: 400 !important; color: var(--mut) !important; cursor: pointer; }
.consent input { flex: none; margin-top: 3px; }
.beta-form .field-error { display: flex; gap: 6px; align-items: center; color: #FF9C9C; font-size: 0.9rem; }
.beta-form .field-error::before { content: "!"; flex: none; width: 16px; height: 16px; display: grid; place-items: center; border-radius: 50%; background: #FF9C9C; color: var(--ink); font-size: 11px; font-weight: 700; }
.beta-form .field-error[hidden] { display: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.beta-card { border-radius: 20px; }
.beta-form .form-status { color: #FF9C9C; font-weight: 600; }
.form-status:empty { display: none; }
.beta-form .btn { justify-self: start; }
.beta-done-title { font: 700 1.5rem/1.2 var(--disp); color: var(--lime); margin-bottom: 8px; }
.beta-done p { color: var(--mut); }
.beta-done strong { color: var(--txt); }

.support-mail { font: 500 1.1rem var(--mono); word-break: break-all; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 48px; color: var(--dim); font-size: 0.9rem; }
.site-footer .wrap { display: grid; gap: 20px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-links a { color: var(--mut); }
.footer-links a:hover { color: var(--txt); }

/* ---------- cookie banner (same consent key as the ChatterLand home) ---------- */
.cookie-banner {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 720px;
    margin-inline: auto;
    padding: 16px 20px;
    background: var(--panel2);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    font-size: 0.9rem;
    color: var(--mut);
}
.cookie-banner[hidden] { display: none; }
.cookie-buttons { display: flex; gap: 10px; justify-content: flex-end; }

/* ---------- legal pages (same structure as /privacidad.html) ---------- */
.legal-header {
    padding: 40px 0 36px;
    border-bottom: 1px solid var(--line);
    background: radial-gradient(120% 90% at 50% 0%, #1B1650 0%, var(--ink) 70%);
}
.legal-header .back { display: inline-block; margin-bottom: 20px; font-size: 0.9rem; }
.legal-header h1 { font-size: clamp(2.1rem, 7vw, 3rem); margin: 12px 0; }
.legal-header p { color: var(--mut); font-size: 0.95rem; }
.legal-header .version { font: 500 0.85rem var(--mono); color: var(--lime); }
.legal-container { width: min(100% - 40px, 800px); margin: 0 auto; padding: 32px 0 72px; }
.legal-container h2 { font-size: 1.6rem; margin: 48px 0 14px; }
.legal-container h3 { font: 600 1.25rem/1.3 var(--body); margin: 28px 0 8px; }
.legal-container p { margin-bottom: 12px; color: #DAD6F5; }
.legal-container ul, .legal-container ol { margin: 8px 0 16px 24px; color: #DAD6F5; }
.legal-container li { margin-bottom: 6px; }
.legal-note {
    background: var(--ink2);
    border: 1px solid var(--line);
    padding: 16px 20px;
    border-radius: 12px;
    margin: 16px 0;
}
.legal-note p:last-child { margin-bottom: 0; }

/* ---------- larger screens ---------- */
@media (min-width: 640px) {
    .about-grid { grid-template-columns: repeat(2, 1fr); }
    .ex-grid { grid-template-columns: repeat(2, 1fr); }
    .cookie-banner { flex-direction: row; align-items: center; }
    .cookie-buttons { flex: none; }
}

@media (min-width: 900px) {
    section { padding: 96px 0; }
    .site-nav a:not(.btn) { display: inline-block; }
    .hero { padding: 72px 0 96px; }
    .hero .wrap { grid-template-columns: 1.15fr 1fr; gap: 56px; }
    .hero-visual .phone + .phone { display: block; margin-bottom: 48px; }
    .ex-grid { grid-template-columns: repeat(3, 1fr); }
    .gallery { justify-content: center; overflow: visible; }
    .rewards { display: grid; grid-template-columns: repeat(3, 1fr); overflow: visible; gap: 12px; }
    .rewards li { width: auto; }
    .rewards .phone { width: 240px; }
    .rewards p { font-size: 0.9rem; }
    .steps { grid-template-columns: repeat(3, 1fr); }
    .city .wrap { grid-template-columns: 1fr 1.2fr; }
    .makers-box { grid-template-columns: 280px 1fr; padding: 40px 48px; }
    .beta-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
}

/* A lit tube that stutters for a moment (neon.js picks one at a time); two dips in 700 ms, under 3 flashes/s. */
@keyframes tube-stutter { 0%, 100% { opacity: 1; } 12% { opacity: .35; } 20% { opacity: 1; } 46% { opacity: .55; } 54% { opacity: 1; } }
em.hl.is-stuttering { animation: tube-stutter 700ms steps(1, end); }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- NEÓN panel capture (same browser frame as the home) ---------- */
.panel-privacy { margin-top: 24px; color: var(--mut); }
.panel-privacy strong { color: var(--txt); }
.browser { border-radius: 14px; overflow: hidden; background: #FAFAFA; border: 1px solid var(--line); }
.browser img { width: 100%; height: auto; }
.browser-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: #F4F4F7; border-bottom: 1px solid #E4E2EE; }
.browser-bar span { width: 10px; height: 10px; border-radius: 50%; background: #D9D7E3; }
.browser-bar em { margin-left: 10px; font-style: normal; font-size: 0.78rem; color: #57526B; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.panel-intro { max-width: 720px; }
.browser { box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45); }
/* Mobile: stacked, each one slightly over the previous */
.panel-stage { display: grid; margin-top: 40px; }
.panel-stage .browser + .browser { margin-top: -12px; }
.shot-list { position: relative; z-index: 3; }
@media (max-width: 899px) {
    /* The patient list stays legible on phones: it scrolls sideways inside its frame, never the page */
    .shot-list { overflow-x: auto; }
    .shot-list .browser-bar { position: sticky; left: 0; }
    .shot-list img { width: 640px; max-width: none; }
}
.shot-res { position: relative; z-index: 2; width: 94%; justify-self: end; }
.shot-plan { position: relative; z-index: 1; width: 88%; }
@media (min-width: 900px) {
    /* Cascade: plan and results behind, the patient list large and in front */
    .panel-stage { grid-template-columns: repeat(12, 1fr); margin-top: 56px; }
    .panel-stage .browser + .browser { margin-top: 0; }
    .shot-plan { grid-column: 1 / 6; grid-row: 1; width: auto; }
    .shot-res { grid-column: 6 / 13; grid-row: 1; width: auto; align-self: start; margin-top: 48px; }
    .shot-list { grid-column: 2 / 12; grid-row: 2; margin-top: -170px; }
}

@media (min-width: 1200px) {
    .rewards p { white-space: nowrap; }
}

/* ---------- skyline at the foot of the hero (N2) ---------- */
.hero { padding-bottom: 0; }
.skyline { display: flex; align-items: flex-end; gap: 6px; height: 120px; margin-top: 40px; padding-inline: 12px; overflow: hidden; }
.skyline i {
    flex: var(--w) 1 0;
    height: var(--h);
    display: grid;
    grid-template-columns: repeat(var(--c), 6px);
    grid-auto-rows: 8px;
    justify-content: space-evenly;
    align-content: start;
    gap: 6px 0;
    padding-top: 10px;
    background: var(--panel);
    border-radius: 3px 3px 0 0;
}
.skyline b { width: 6px; height: 8px; border-radius: 1px; background: var(--volt); opacity: 0; }
.skyline b.l { background: var(--lime); }
.skyline b.on { opacity: 1; }

/* ---------- volts earned today (N7) ---------- */
.volts { margin-top: 28px; max-width: 360px; padding: 16px 20px; border-radius: 16px; background: var(--panel); border: 2px solid var(--volt); }
.volt-lines { list-style: none; display: grid; gap: 4px; padding-bottom: 10px; margin-bottom: 8px; border-bottom: 1px solid var(--line); color: var(--mut); font-size: 0.95rem; }
.volt-lines li { display: flex; justify-content: space-between; }
.volt-lines b { font: 500 0.95rem var(--mono); color: var(--volt); }
.volt-total { display: flex; align-items: baseline; gap: 10px; font: 700 0.9rem var(--disp); letter-spacing: 1px; text-transform: uppercase; }
.volt-num { font: 700 2.5rem/1 var(--disp); color: var(--volt); font-variant-numeric: tabular-nums; min-width: 4ch; }
.volt-unit { color: var(--volt); }

/* ---------- panel fan (N8): final state has a slight tilt; a highlight marks Adri's row ---------- */
.shot-img { position: relative; overflow: hidden; }
.row-hl { position: absolute; left: 0; right: 0; top: 9.7%; height: 13.3%; background: rgba(124, 58, 237, 0.16); border-left: 4px solid var(--act); }
.shot-plan { transform: rotate(-1.5deg); }
.shot-res { transform: rotate(1.5deg); }
@media (max-width: 899px) {
    .shot-list .shot-img { width: 640px; }
    .shot-list .shot-img img { width: 100%; }
}

/* ---------- motion: anything that starts hidden is gated by .js AND no-preference ---------- */
@media (prefers-reduced-motion: no-preference) {
    .btn:active { transform: scale(.97); }

    /* N1: the sign lights up. The highlight never starts at 0, so the H1 stays an LCP candidate. */
    .site-header .logo .tilde path { stroke-dasharray: 80; animation: wave 1.2s var(--ease-out) both; }
    .hero h1 .hl { animation: sign 900ms linear 300ms backwards; }
    .hero h1 .hl.is-stuttering { animation: sign 900ms linear 300ms backwards, tube-stutter 700ms steps(1, end); }

    /* N2: each window clicks on like a fluorescent tube, then stays lit */
    .js .skyline b { opacity: 0; }
    .js .skyline.is-lit b { animation: win 120ms steps(2) var(--d) forwards; }

    /* N3: the second hero phone rises; the first one (LCP) never moves */
    .hero-visual .phone + .phone { animation: rise 600ms var(--ease-spring) 400ms backwards; }

    /* N4: mono eyebrows get typed, one step per character */
    .js .eyebrow[data-anim] { position: relative; display: inline-block; overflow: hidden; vertical-align: top; }
    .js .eyebrow[data-anim]::after { content: ""; position: absolute; inset: 0; background: var(--ink); }
    .js .city .eyebrow[data-anim]::after { background: #120F31; }
    .js .eyebrow.is-in::after { transform: translateX(101%); transition: transform min(500ms, calc(var(--n) * 30ms)) steps(var(--n)); }

    /* A9-like entrances: challenge cards, steps and rewards */
    [data-anim=in] > li { transition: opacity 400ms var(--ease-out), transform 400ms var(--ease-out); transition-delay: calc(var(--i, 0) * 70ms); }
    .js [data-anim=in]:not(.is-in) > li { opacity: 0; transform: translateY(12px); }

    /* N5: a neon tube draws itself on top of each challenge */
    .ex::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--lime); transform-origin: left; transition: transform 350ms var(--ease-out); transition-delay: calc(var(--i) * 70ms + 150ms); }
    .js .ex-grid:not(.is-in) .ex::before { transform: scaleX(0); }

    /* N6: three windows light up in turn, joined by a cable */
    .steps li::after { transition: opacity 200ms steps(2); transition-delay: calc(var(--i, 0) * 350ms + 200ms); }
    .js .steps:not(.is-in) li::after { opacity: 0; }
    .steps::before { transition: transform 800ms var(--ease-io); }
    .js .steps:not(.is-in)::before { transform: scaleX(0); }

    /* N7: the breakdown comes in line by line before the total counts up */
    .volt-lines li { transition: opacity 300ms, transform 300ms var(--ease-out); transition-delay: calc(var(--i) * 150ms); }
    .js .volts:not(.is-in) .volt-lines li { opacity: 0; transform: translateX(-8px); }

    /* N8: the three captures start stacked and fan out to their place */
    .panel-stage .browser { transition: transform 700ms var(--ease-out); }
    .js .panel-stage:not(.is-in) .shot-res { transform: translateY(-40%); }
    .js .panel-stage:not(.is-in) .shot-plan { transform: translateY(-80%); }
    .row-hl { transition: transform 500ms var(--ease-out) 750ms; }
    .js .panel-stage:not(.is-in) .row-hl { transform: translateX(-100%); }

    /* Rewards: the three phones come in with a small turn */
    .rewards[data-anim] > li { transition-duration: 500ms; transition-timing-function: var(--ease-spring); transition-delay: calc(var(--i) * 100ms); }
    .js .rewards:not(.is-in) > li { transform: translateY(24px) rotate(-2deg); }
}
@keyframes sign { 0% { opacity: .25; } 20% { opacity: 1; } 40% { opacity: .4; } 60% { opacity: 1; } 80% { opacity: .7; } 100% { opacity: 1; } }
@keyframes win { from { opacity: 0; } to { opacity: 1; } }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } }

@media (min-width: 900px) {
    .steps li { padding: 72px 24px 24px; }
    .steps li::before, .steps li::after { top: 24px; }
    .steps::before { content: ""; position: absolute; z-index: 1; left: 40px; right: calc((100% - 32px) / 3 - 40px); top: 39px; height: 2px; background: var(--line); transform-origin: left; }
    .city .volts { margin-top: 32px; }
    @media (prefers-reduced-motion: no-preference) {
        .js .panel-stage:not(.is-in) .shot-plan { transform: translate(30%, 45%); }
        .js .panel-stage:not(.is-in) .shot-res { transform: translate(-20%, 40%); }
    }
}