/* ==========================================================================
   Base: reset, typography, shared components (nav, buttons, marks, footer)
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

:where(ul[class], ol[class], ul[role="list"], ol[role="list"]) {
  list-style: none;
  padding: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--leading-snug);
  letter-spacing: -0.025em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

::selection {
  background: var(--lavender);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

:focus-visible {
  outline: var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  transform: none;
}

/* Layout ----------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: calc(var(--wide) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--section-y);
}

/* Highlighter mark: the lavender swipe that draws itself in --------------- */

.mark {
  --mark-color: var(--lavender);
  background-image: linear-gradient(
    100deg,
    transparent 0.2em,
    var(--mark-color) 0.2em,
    var(--mark-color) calc(100% - 0.15em),
    transparent calc(100% - 0.15em)
  );
  background-repeat: no-repeat;
  background-position: 0 88%;
  background-size: 100% 0.42em;
  padding-inline: 0.06em;
  margin-inline: -0.06em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.js .mark[data-draw] {
  background-size: 0% 0.42em;
  transition: background-size var(--dur-slow) var(--ease-out) 250ms;
}

.js .is-in .mark[data-draw],
.js .mark[data-draw].is-in {
  background-size: 100% 0.42em;
}

/* Handwritten margin notes ------------------------------------------------ */

.note {
  font-family: var(--font-hand);
  font-size: 1.3rem;
  line-height: 1.15;
  color: var(--purple);
  font-weight: 400;
  letter-spacing: 0;
}

.doodle {
  color: var(--purple);
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

/* Kicker: used once per page region, not on every section ---------------- */

.kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 3rem;
  padding: 0.8em 1.4em;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
  white-space: nowrap;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 0 var(--ink);
}

.btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn--ink {
  background: var(--ink);
  color: var(--paper);
}

.btn--ink:hover {
  box-shadow: 0 4px 0 var(--lavender);
}

.btn--line {
  background: transparent;
  color: var(--ink);
}

.btn--line:hover {
  background: var(--lavender-soft);
}

.btn--purple {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
}

.btn--purple:hover {
  background: var(--purple-deep);
  border-color: var(--purple-deep);
  box-shadow: 0 4px 0 var(--ink);
}

.btn--lavender {
  background: var(--lavender);
  border-color: var(--lavender);
  color: var(--ink);
}

.btn--lavender:hover {
  box-shadow: 0 4px 0 var(--paper);
}

.btn .arrow {
  transition: transform var(--dur-fast) var(--ease-out);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

.btn:hover .arrow--ne {
  transform: translate(2px, -2px);
}

/* Navigation -------------------------------------------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease-out);
}

.nav.is-scrolled {
  border-bottom-color: var(--stone);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 4.5rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.logo span {
  color: var(--purple);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-4), 2.5vw, var(--space-6));
  font-size: var(--text-sm);
  font-weight: 500;
}

.nav__links a {
  white-space: nowrap;
  text-decoration: none;
  padding-block: var(--space-2);
  background-image: linear-gradient(var(--lavender), var(--lavender));
  background-repeat: no-repeat;
  background-position: 0 85%;
  background-size: 0% 0.4em;
  transition: background-size var(--dur) var(--ease-out);
}

.nav__links a:hover,
.nav__links a[aria-current="true"] {
  background-size: 100% 0.4em;
}

.nav__links a.nav__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.45em 0.95em;
  border-radius: var(--radius-pill);
  background: var(--lavender);
  background-image: none;
  color: var(--ink);
  font-weight: 600;
  transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.nav__links a.nav__pill:hover {
  background: var(--ink);
  color: var(--paper);
  transform: rotate(-2deg);
}

.nav__toggle {
  display: none;
  position: relative;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-pill);
  margin-right: calc(var(--space-2) * -1);
}

.nav__toggle-bar {
  position: absolute;
  left: 50%;
  width: 1.375rem;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  translate: -50% 0;
  transition: transform var(--dur) var(--ease-out), top var(--dur) var(--ease-out);
}

.nav__toggle-bar:nth-child(1) {
  top: calc(50% - 4px);
}

.nav__toggle-bar:nth-child(2) {
  top: calc(50% + 3px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  top: calc(50% - 1px);
  transform: rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  top: calc(50% - 1px);
  transform: rotate(-45deg);
}

@media (max-width: 900px) {
  .nav__toggle {
    display: inline-block;
  }

  .nav__links {
    position: fixed;
    inset: 4.5rem 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) var(--gutter) var(--space-7);
    background: var(--paper);
    border-bottom: 1px solid var(--stone);
    box-shadow: 0 30px 40px -30px rgb(25 25 25 / 0.25);
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility 0s linear var(--dur);
  }

  .nav__links.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility 0s;
  }

  .nav__links a {
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--stone);
    background-position: 0 70%;
  }

  .nav__links a.nav__pill {
    justify-content: space-between;
    margin-top: var(--space-5);
    padding: 0.55em 0.8em;
    border-bottom: 0;
    border-radius: var(--radius-lg);
  }

  .nav__links .btn {
    margin-top: var(--space-5);
    font-size: var(--text-base);
  }

  body.menu-open {
    overflow: hidden;
  }
}

/* Footer ------------------------------------------------------------------ */

.footer {
  padding-block: var(--space-8) var(--space-6);
  border-top: 1px solid var(--stone);
  font-size: var(--text-sm);
}

.footer__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-7);
}

.footer__brand p {
  color: var(--ink-soft);
  margin-top: var(--space-2);
  max-width: 30ch;
}

.footer__cols {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.footer__cols h2 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: var(--space-3);
}

.footer__cols ul {
  display: grid;
  gap: var(--space-2);
}

.footer__cols a {
  text-decoration: none;
}

.footer__cols a:hover {
  text-decoration: underline;
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-8);
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

/* Reveal on scroll: content is visible unless JS opts in ------------------ */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .js .mark[data-draw] {
    background-size: 100% 0.42em;
  }
}