/* ADE Survival Guide sales page. Palette from Merel's profile, type from Shapes (Montserrat headings) and the workbook (Source Serif 4 body, IBM Plex Mono labels). */

@font-face { font-family: "Montserrat"; src: url("fonts/montserrat-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Montserrat"; src: url("fonts/montserrat-800.woff2") format("woff2"); font-weight: 800; font-display: swap; }
@font-face { font-family: "Montserrat"; src: url("fonts/montserrat-900.woff2") format("woff2"); font-weight: 900; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  color-scheme: light;

  /* Merel's palette */
  --canal: #0B0F14;        /* Grachtzwart, canal black */
  --strobe: #F2F4F7;       /* Stroboscoopwit, strobe white */
  --delft: #1D3F9E;        /* Delfts blauw, Delft blue */
  --orange: #FF6B1A;       /* Oordop-oranje, earplug orange */
  --white: #FFFFFF;
  --muted: #2A2F33;        /* Shapes neutral-2 */
  --muted-on-dark: #B9C0CA;
  --rule: #C9CFDA;
  --delft-tint: #E3E8F3;

  --font-heading: "Montserrat", system-ui, sans-serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;

  --measure: 34rem;
  --wide: 72rem;
  --shadow: 8px 8px 0 0 var(--canal);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--strobe);
  color: var(--canal);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--delft); text-underline-offset: 3px; }
a:hover { color: var(--canal); }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
p { margin: 0 0 var(--space-2); }

.wrap { width: 100%; max-width: var(--wide); margin: 0 auto; padding: 0 var(--space-2); }
@media (min-width: 720px) { .wrap { padding: 0 var(--space-4); } }

.skip { position: absolute; left: -9999px; top: 0; background: var(--canal); color: var(--white); padding: var(--space-1) var(--space-2); z-index: 100; }
.skip:focus { left: var(--space-2); }

/* ---------- Type ---------- */

.label {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--delft);
  margin: 0 0 var(--space-2);
}
.dark .label { color: var(--orange); }

.h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  text-transform: uppercase;
  font-size: clamp(3.25rem, 13vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
}

.h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(1.5rem, 5.4vw, 2.25rem);
  line-height: 1.15;
  letter-spacing: 0.16em;
  margin: 0 0 var(--space-3);
}
@media (min-width: 720px) { .h2 { letter-spacing: 0.22em; } }

.h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.125rem;
  line-height: 1.3;
  margin: 0 0 var(--space-1);
}

.lede { font-size: 1.25rem; line-height: 1.5; }
.sub { font-style: italic; font-size: 1.25rem; color: var(--muted); margin: 0 0 var(--space-1); }
.promise { font-weight: 600; font-size: 1.375rem; line-height: 1.35; color: var(--delft); margin: 0 0 var(--space-3); }
.rule-line { width: 72px; height: 3px; background: var(--delft); border: 0; margin: 0 0 var(--space-3); }
.muted { color: var(--muted); }
.small { font-size: 0.9375rem; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 56px;
  padding: var(--space-2) var(--space-3);
  background: var(--orange);
  color: var(--canal);
  border: 3px solid var(--canal);
  border-radius: 0;
  box-shadow: 4px 4px 0 0 var(--canal);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.125rem;
  line-height: 1.2;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, background-color 120ms ease, color 120ms ease;
}
.btn:hover { background: var(--canal); color: var(--white); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 0 var(--canal); }
.dark .btn { border-color: var(--strobe); box-shadow: 4px 4px 0 0 var(--strobe); }
.dark .btn:hover { background: var(--strobe); color: var(--canal); }
.btn-block { width: 100%; }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }

.buy-meta {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin: var(--space-2) 0 0;
}
.dark .buy-meta { color: var(--muted-on-dark); }

/* ---------- Launch bar ---------- */

.launch-bar {
  background: var(--canal);
  color: var(--strobe);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.4;
  text-align: center;
  padding: 10px var(--space-2);
}
.launch-bar strong { color: var(--orange); font-weight: 600; }
.launch-bar .countdown { white-space: nowrap; }

/* ---------- Hero ---------- */

.hero { padding: var(--space-6) 0 var(--space-8); }
.hero-grid { display: grid; gap: var(--space-6); align-items: center; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: var(--space-8); } }

.hero-copy .lede { max-width: var(--measure); }
.hero-cta { margin-top: var(--space-4); }
.price-line { font-family: var(--font-mono); font-size: 0.9375rem; margin: var(--space-2) 0 0; }
.price-line strong { font-weight: 600; }
.unofficial { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); margin-top: var(--space-3); }

.hero-visual { position: relative; max-width: 520px; margin: 0 auto; width: 100%; padding: 0 var(--space-6) var(--space-6) 0; }
.hero-photo { border: 3px solid var(--canal); box-shadow: var(--shadow); width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.hero-cover {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  background: var(--white);
  border: 3px solid var(--canal);
  box-shadow: var(--shadow);
  transform: rotate(3deg);
}

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

.section { padding: var(--space-8) 0; }
@media (min-width: 720px) { .section { padding: var(--space-12) 0; } }
.dark { background: var(--canal); color: var(--strobe); }
.dark .muted { color: var(--muted-on-dark); }
.dark a { color: var(--strobe); }
.white { background: var(--white); }
.section-head { max-width: 44rem; margin-bottom: var(--space-6); }

/* Letter */
.letter { display: grid; gap: var(--space-4); max-width: 46rem; }
@media (min-width: 720px) { .letter { grid-template-columns: 160px 1fr; gap: var(--space-6); } }
.letter-photo { width: 120px; height: 120px; border-radius: 50%; border: 3px solid var(--strobe); object-fit: cover; }
@media (min-width: 720px) { .letter-photo { width: 160px; height: 160px; } }
.letter-body p { font-size: 1.1875rem; }
.sign { font-style: italic; font-size: 1.375rem; margin-top: var(--space-3); }
.who { margin-top: var(--space-4); padding-top: var(--space-3); border-top: 1px solid #2A3038; font-size: 1rem; }

/* Set curve */
.curve { margin: 0 0 var(--space-6); }
.curve svg { width: 100%; height: auto; display: block; }
.curve-labels { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-1); margin-top: var(--space-1); }
.curve-labels span { font-family: var(--font-mono); font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--delft); text-align: center; }
.curve-labels small { display: block; font-family: var(--font-body); font-style: italic; font-weight: 400; font-size: 0.8125rem; letter-spacing: 0; text-transform: none; color: var(--muted); }
@media (max-width: 559px) { .curve-labels small { display: none; } .curve-labels span { font-size: 0.5625rem; } }

/* Tracklist */
.parts { display: grid; gap: var(--space-4); }
@media (min-width: 960px) { .parts { grid-template-columns: 1fr 1fr; gap: var(--space-4) var(--space-6); } }
.part { border-top: 3px solid var(--canal); padding-top: var(--space-2); }
.part-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-1) var(--space-2); margin-bottom: var(--space-2); }
.part-num { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600; color: var(--delft); text-transform: uppercase; letter-spacing: 0.06em; }
.part-name { font-family: var(--font-heading); font-weight: 900; font-size: 1.375rem; text-transform: uppercase; margin: 0; }
.part-when { font-style: italic; color: var(--muted); }
.tracks { list-style: none; margin: 0; padding: 0; }
.tracks li { display: grid; grid-template-columns: 2.25rem 1fr; gap: 0 var(--space-1); padding: 10px 0; border-bottom: 1px solid var(--rule); }
.tracks li:last-child { border-bottom: 0; }
.t-num { font-family: var(--font-mono); font-weight: 600; font-size: 0.875rem; color: var(--orange); padding-top: 3px; }
.t-name { font-weight: 700; display: block; line-height: 1.35; }
.t-line { display: block; font-size: 1rem; color: var(--muted); line-height: 1.45; }
.parts-note { margin-top: var(--space-4); max-width: 44rem; }

/* Look inside */
.gallery {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 72%;
  gap: var(--space-3);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0 var(--space-2) var(--space-3);
  margin: 0 calc(var(--space-2) * -1);
  scrollbar-width: thin;
}
@media (min-width: 720px) {
  .gallery { grid-auto-flow: row; grid-template-columns: repeat(3, 1fr); grid-auto-columns: auto; overflow: visible; padding: 0; margin: 0; gap: var(--space-4); }
}
.gallery figure { margin: 0; scroll-snap-align: start; }
.gallery a { display: block; border: 3px solid var(--canal); box-shadow: 6px 6px 0 0 var(--canal); background: var(--white); transition: transform 120ms ease; }
.gallery a:hover { transform: translate(-2px, -2px); }
@media (prefers-reduced-motion: reduce) { .gallery a { transition: none; } .gallery a:hover { transform: none; } }
.gallery figcaption { font-size: 0.9375rem; line-height: 1.45; margin-top: var(--space-2); color: var(--muted); }
.gallery figcaption b { color: var(--canal); font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; display: block; margin-bottom: 2px; }
.scroll-hint { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); margin: 0 0 var(--space-2); }
@media (min-width: 720px) { .scroll-hint { display: none; } }

.lightbox { padding: 0; border: 3px solid var(--canal); max-width: min(92vw, 720px); max-height: 92vh; background: var(--white); }
.lightbox::backdrop { background: rgba(11, 15, 20, 0.85); }
.lightbox img { width: 100%; height: auto; max-height: calc(92vh - 6px); object-fit: contain; }
.lightbox-close { position: absolute; top: var(--space-1); right: var(--space-1); width: 44px; height: 44px; border: 3px solid var(--canal); background: var(--orange); color: var(--canal); font: 900 1.25rem/1 var(--font-heading); cursor: pointer; }

/* Bonuses */
.bonuses { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); }
@media (min-width: 720px) { .bonuses { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .bonuses { grid-template-columns: repeat(3, 1fr); } }
.bonus { border: 3px solid var(--strobe); padding: var(--space-3); }
.bonus .label { margin-bottom: var(--space-1); }
.bonus .h3 { font-size: 1.25rem; }
.bonus p { margin: 0; color: var(--muted-on-dark); font-size: 1.0625rem; }

/* Quote */
.quote { margin: 0; max-width: 52rem; }
.quote p { font-family: var(--font-heading); font-weight: 900; text-transform: uppercase; font-size: clamp(1.75rem, 6.5vw, 3.5rem); line-height: 1.02; letter-spacing: -0.01em; margin: 0 0 var(--space-3); }
.quote p span { color: var(--orange); }
.quote footer { font-family: var(--font-mono); font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--delft); }

/* Fit */
.fit-grid { display: grid; gap: var(--space-6); }
@media (min-width: 960px) { .fit-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); } }
.checks { list-style: none; margin: 0 0 var(--space-4); padding: 0; }
.checks li { position: relative; padding: 0 0 var(--space-2) 36px; }
.checks li::before { content: ""; position: absolute; left: 0; top: 5px; width: 18px; height: 18px; border: 3px solid var(--canal); background: var(--orange); }
.checks.no li::before { background: transparent; }
.adjust { margin: 0; }
.adjust div { padding: var(--space-2) 0; border-top: 1px solid var(--rule); }
.adjust dt { font-family: var(--font-heading); font-weight: 800; font-size: 1.0625rem; margin-bottom: 4px; }
.adjust dd { margin: 0; font-size: 1rem; color: var(--muted); }

/* Offer */
.offer-grid { display: grid; gap: var(--space-6); align-items: start; }
@media (min-width: 960px) { .offer-grid { grid-template-columns: 0.8fr 1.2fr; gap: var(--space-8); } }
.offer-cover { max-width: 300px; border: 3px solid var(--canal); box-shadow: var(--shadow); background: var(--white); transform: rotate(-2deg); margin: 0 auto; }
.card { background: var(--white); border: 4px solid var(--canal); box-shadow: var(--shadow); padding: var(--space-3); }
@media (min-width: 720px) { .card { padding: var(--space-6); } }
.card .h2 { margin-bottom: var(--space-2); }
.includes { list-style: none; margin: 0 0 var(--space-4); padding: 0; }
.includes li { position: relative; padding: 10px 0 10px 32px; border-bottom: 1px solid var(--rule); font-size: 1.0625rem; line-height: 1.45; }
.includes li::before { content: ""; position: absolute; left: 0; top: 16px; width: 14px; height: 14px; background: var(--orange); border: 2px solid var(--canal); }
.price-row { display: flex; align-items: baseline; flex-wrap: wrap; gap: var(--space-1) var(--space-2); margin-bottom: var(--space-1); }
.price { font-family: var(--font-heading); font-weight: 900; font-size: 4rem; line-height: 1; }
.price-note { font-family: var(--font-mono); font-size: 0.875rem; line-height: 1.5; margin: 0 0 var(--space-3); }
.price-note .countdown { color: var(--delft); font-weight: 600; }

/* FAQ */
.faq { max-width: 46rem; }
.faq details { border-top: 3px solid var(--canal); }
.faq details:last-child { border-bottom: 3px solid var(--canal); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: var(--space-2); padding: var(--space-2) 0; font-family: var(--font-heading); font-weight: 800; font-size: 1.0625rem; line-height: 1.4; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); font-weight: 600; font-size: 1.375rem; line-height: 1; color: var(--orange); flex-shrink: 0; }
.faq details[open] summary::after { content: "\2212"; }
.faq details > div { padding: 0 0 var(--space-3); }
.faq details > div p:last-child { margin-bottom: 0; }

/* Final */
.final { text-align: center; }
.final .h1 { font-size: clamp(2.5rem, 10vw, 5.5rem); }
.final .lede { max-width: 34rem; margin: 0 auto var(--space-4); }

/* Footer */
.footer { padding: var(--space-6) 0 calc(var(--space-12) + var(--space-4)); background: var(--canal); color: var(--muted-on-dark); border-top: 1px solid #2A3038; font-size: 0.875rem; line-height: 1.6; }
.footer p { max-width: 46rem; }
.footer strong { color: var(--strobe); font-family: var(--font-mono); font-weight: 600; font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; display: block; margin-bottom: 2px; }
.footer-grid { display: grid; gap: var(--space-3); }
@media (min-width: 720px) { .footer-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3) var(--space-6); } }

/* Sticky buy bar */
.sticky {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  background: var(--canal);
  color: var(--strobe);
  border-top: 3px solid var(--orange);
  padding: 10px var(--space-2) calc(10px + env(safe-area-inset-bottom));
  transform: translateY(110%);
  transition: transform 200ms ease;
}
.sticky.show { transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .sticky { transition: none; } }
.sticky-inner { max-width: var(--wide); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.sticky-title { font-family: var(--font-heading); font-weight: 900; text-transform: uppercase; font-size: 0.9375rem; line-height: 1.2; }
.sticky-title small { display: block; font-family: var(--font-mono); font-weight: 400; text-transform: none; font-size: 0.75rem; color: var(--muted-on-dark); }
.sticky .btn { min-height: 48px; padding: 10px var(--space-2); font-size: 1rem; border-color: var(--strobe); box-shadow: none; white-space: nowrap; }
.sticky .btn:hover { background: var(--strobe); color: var(--canal); }

[hidden] { display: none !important; }