/* goodbuddy.ai — "lamplight at dusk".
   One idea: it is evening, the house is quiet, and there is a light on. A twilight sky with slow
   stars and a few fireflies sits behind everything; the lamp glows amber; headings are set in a
   soft storybook serif. Body text stays large, plain and very high contrast, because the people
   reading it may be eighty. All motion stops under prefers-reduced-motion. */

:root {
  --night: #0b0e2a;       /* sky, top */
  --dusk: #171c4f;        /* sky, middle */
  --moon: #f6f2e4;        /* text */
  --moon-soft: #c9cbec;   /* supporting text */
  --amber: #ffb703;       /* the lamp */
  --amber-soft: #ffe08a;
  --ink: #1a1440;         /* text on amber */
  --glass: rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.1);
  --hairline: rgba(255, 255, 255, 0.16);
  --gold: linear-gradient(100deg, #ffeeb5 0%, #ffc530 45%, #ff9d5c 100%);

  --display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --body: 'Atkinson Hyperlegible', system-ui, sans-serif;
  --measure: 62ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 26px;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; background: var(--night); }
body {
  color: var(--moon);
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.015em; line-height: 1.08; font-variation-settings: 'SOFT' 100, 'WONK' 0; }
h1 { font-size: clamp(2.5rem, 6.4vw, 4.6rem); }
h2 { font-size: clamp(2rem, 4.2vw, 3rem); margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.45rem; }
/* the words that carry the feeling are set in gold */
h1 em, h2 em, .figure-n { color: var(--amber-soft); }
h1 em, h2 em { font-style: italic; }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  h1 em, h2 em, .figure-n {
    background: var(--gold); background-size: 200% 100%;
    -webkit-background-clip: text; background-clip: text; color: transparent;
    animation: shimmer 9s ease-in-out infinite alternate;
  }
}
p { max-width: var(--measure); }
a { color: var(--amber-soft); text-underline-offset: 3px; }
ul, ol { padding-left: 1.2rem; }
.lede { font-size: 1.25rem; color: var(--moon-soft); }
.fine { font-size: 0.95rem; color: var(--moon-soft); }
.eyebrow { font-family: var(--body); font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.82rem; color: var(--amber-soft); margin-bottom: 1rem; }

.skip { position: absolute; left: -999px; top: 0; background: var(--amber); color: var(--ink); padding: 0.5rem 1rem; z-index: 100; font-weight: 700; }
.skip:focus { left: 1rem; top: 1rem; }

/* ---- the sky: fixed behind everything ---- */
.sky {
  position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
  background:
    radial-gradient(90% 55% at 50% 112%, rgba(255, 157, 92, 0.22), transparent 70%),
    linear-gradient(180deg, var(--night) 0%, var(--dusk) 55%, #231a55 100%);
}
.sky::before, .sky::after { content: ''; position: absolute; inset: 0; background-repeat: repeat; }
.sky::before {
  background-image:
    radial-gradient(1.6px 1.6px at 24px 36px, #fff, transparent),
    radial-gradient(1.2px 1.2px at 150px 92px, #fff, transparent),
    radial-gradient(1.8px 1.8px at 212px 210px, #ffe9b0, transparent),
    radial-gradient(1px 1px at 88px 180px, #fff, transparent),
    radial-gradient(1.3px 1.3px at 270px 30px, #dfe4ff, transparent);
  background-size: 300px 260px;
  animation: twinkle 5.5s ease-in-out infinite alternate;
}
.sky::after {
  background-image:
    radial-gradient(1.4px 1.4px at 60px 120px, #fff, transparent),
    radial-gradient(1px 1px at 190px 40px, #fff, transparent),
    radial-gradient(2px 2px at 330px 170px, #fff3c9, transparent),
    radial-gradient(1.1px 1.1px at 400px 290px, #dfe4ff, transparent),
    radial-gradient(1.2px 1.2px at 250px 330px, #fff, transparent);
  background-size: 460px 380px;
  animation: twinkle 8s ease-in-out 1.5s infinite alternate-reverse;
}
.aurora { position: absolute; border-radius: 50%; filter: blur(80px); will-change: transform; }
.aurora.a { width: 62vmax; height: 40vmax; top: -16vmax; right: -14vmax; background: rgba(120, 88, 255, 0.5); animation: drift 26s ease-in-out infinite alternate; }
.aurora.b { width: 48vmax; height: 34vmax; top: 34vh; left: -22vmax; background: rgba(60, 190, 200, 0.2); animation: drift 34s ease-in-out -8s infinite alternate-reverse; }

/* fireflies */
.sky i {
  position: absolute; width: 5px; height: 5px; border-radius: 50%;
  background: var(--amber-soft);
  box-shadow: 0 0 10px 3px rgba(255, 205, 90, 0.75), 0 0 26px 8px rgba(255, 183, 3, 0.25);
  animation: wander var(--d, 14s) ease-in-out var(--w, 0s) infinite alternate, glimmer 3.4s ease-in-out var(--w, 0s) infinite;
}
.sky i:nth-of-type(1) { left: 8%;  top: 30%; --x: 60px;  --y: -80px;  --d: 13s; }
.sky i:nth-of-type(2) { left: 22%; top: 72%; --x: -40px; --y: -110px; --d: 17s; --w: -4s; }
.sky i:nth-of-type(3) { left: 46%; top: 18%; --x: 90px;  --y: 50px;   --d: 19s; --w: -9s; }
.sky i:nth-of-type(4) { left: 64%; top: 62%; --x: -70px; --y: -60px;  --d: 15s; --w: -2s; }
.sky i:nth-of-type(5) { left: 82%; top: 36%; --x: 50px;  --y: 90px;   --d: 21s; --w: -12s; }
.sky i:nth-of-type(6) { left: 92%; top: 80%; --x: -90px; --y: -40px;  --d: 16s; --w: -6s; }
.sky i:nth-of-type(7) { left: 36%; top: 88%; --x: 70px;  --y: -70px;  --d: 18s; --w: -10s; }

@keyframes twinkle { from { opacity: 0.3; } to { opacity: 0.95; } }
@keyframes drift { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(-6vmax, 4vmax, 0) scale(1.15); } }
@keyframes wander { from { transform: translate3d(0, 0, 0); } to { transform: translate3d(var(--x, 40px), var(--y, -60px), 0); } }
@keyframes glimmer { 0%, 100% { opacity: 0.15; } 45%, 60% { opacity: 1; } }
@keyframes shimmer { from { background-position: 0% 50%; } to { background-position: 100% 50%; } }

/* ---- header ---- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 1.1rem var(--gutter);
  max-width: 76rem; margin-inline: auto;
}
.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--display); font-weight: 600; font-size: 1.4rem; text-decoration: none; color: var(--moon); }
.brand svg { filter: drop-shadow(0 0 10px rgba(255, 183, 3, 0.7)); }
.brand svg rect { fill: transparent; }
.topnav { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; }
.topnav a { text-decoration: none; font-weight: 700; padding: 0.5rem 0.25rem; color: var(--moon); }
.topnav a:not(.btn):hover { color: var(--amber-soft); }
.topnav a[aria-current='page'] { color: var(--amber-soft); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 7px; }

/* ---- buttons ---- */
.btn {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-block; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
  color: var(--moon); background: var(--glass); border: 2px solid rgba(255, 255, 255, 0.45); border-radius: 999px;
  padding: 0.8em 1.6em; min-height: 48px;
  transition: transform 180ms ease, box-shadow 220ms ease, background-color 180ms ease, border-color 180ms ease;
  touch-action: manipulation;
}
.btn:hover { transform: translateY(-2px); background: var(--glass-strong); border-color: var(--amber-soft); }
.btn:active { transform: scale(0.98); }
.btn.primary {
  color: var(--ink); border-color: transparent;
  background: linear-gradient(180deg, #ffe07a 0%, var(--amber) 60%, #ffa41c 100%);
  box-shadow: 0 0 0 1px rgba(255, 224, 138, 0.5), 0 10px 34px -6px rgba(255, 183, 3, 0.55);
}
.btn.primary:hover { background: linear-gradient(180deg, #ffe890 0%, #ffc021 60%, #ffab2e 100%); box-shadow: 0 0 0 1px rgba(255, 224, 138, 0.8), 0 14px 46px -4px rgba(255, 183, 3, 0.8); }
/* a slow glint crosses the main button */
.btn.primary::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 35%, rgba(255, 255, 255, 0.65) 50%, transparent 65%);
  transform: translateX(-120%);
  animation: glint 5.5s ease-in-out infinite;
}
@keyframes glint { 0%, 70% { transform: translateX(-120%); } 100% { transform: translateX(120%); } }
.btn.small { padding: 0.5em 1.1em; min-height: 44px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--amber-soft); outline-offset: 4px; border-radius: 6px; }
.btn:focus-visible { outline: 3px solid #fff; outline-offset: 4px; border-radius: 999px; }

/* ---- glass surfaces ---- */
.tablet, .three article, .memory-card, .quiet-card, .price-card, .faq details, .figures li, .note, .table-wrap table {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), 0 24px 60px -30px rgba(0, 0, 0, 0.6);
}

/* ---- hero ---- */
.hero {
  display: grid; gap: 3rem; align-items: center;
  max-width: 76rem; margin-inline: auto; padding: clamp(2rem, 6vw, 5rem) var(--gutter) clamp(3rem, 8vw, 6rem);
}
.hero-copy h1 { margin: 0 0 1.4rem; max-width: 13ch; }
.cta-row { display: flex; gap: 0.9rem; flex-wrap: wrap; margin: 2rem 0 1rem; }

.hero-demo { display: grid; gap: 1rem; justify-items: center; }
.tablet {
  width: min(100%, 25rem); border-radius: 34px;
  padding: 1.75rem 1.4rem 1.5rem; display: grid; justify-items: center; gap: 1.6rem;
}
.tablet-greeting { font-family: var(--display); font-weight: 600; font-size: 1.6rem; text-align: center; }
.lamp {
  position: relative;
  width: 160px; height: 160px; border-radius: 50%; color: var(--ink);
  background: radial-gradient(circle at 38% 32%, #fff6d2 0%, #ffd34d 34%, var(--amber) 62%, #f39200 100%);
  display: grid; place-items: center; text-align: center; font-family: var(--display); font-weight: 600; font-size: 1.25rem;
  box-shadow: 0 0 40px 6px rgba(255, 196, 60, 0.6), 0 0 120px 30px rgba(255, 183, 3, 0.28);
  animation: breathe 3.6s ease-in-out infinite;
}
.lamp span { max-width: 7ch; position: relative; z-index: 1; }
.lamp::before, .lamp::after {
  content: ''; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid rgba(255, 224, 138, 0.7);
  animation: ring 3.6s ease-out infinite;
}
.lamp::after { animation-delay: 1.8s; }
@keyframes breathe {
  0%, 100% { box-shadow: 0 0 40px 6px rgba(255, 196, 60, 0.55), 0 0 120px 30px rgba(255, 183, 3, 0.25); }
  50% { box-shadow: 0 0 56px 12px rgba(255, 210, 90, 0.8), 0 0 160px 50px rgba(255, 183, 3, 0.38); }
}
@keyframes ring { 0% { transform: scale(1); opacity: 0.8; } 100% { transform: scale(1.7); opacity: 0; } }
.bubbles { display: grid; gap: 0.6rem; width: 100%; }
.bubble { font-size: 1rem; line-height: 1.4; padding: 0.7rem 0.95rem; border-radius: 18px; max-width: 100%; }
.bubble.buddy { background: rgba(255, 224, 138, 0.14); border: 1px solid rgba(255, 224, 138, 0.3); font-weight: 700; border-bottom-left-radius: 6px; }
.bubble.you { color: var(--moon-soft); font-style: italic; text-align: right; }
.caption { font-size: 0.95rem; color: var(--moon-soft); text-align: center; }

/* ---- bands and splits ---- */
.band, .split, .steps-section, .faq, .closing { max-width: 76rem; margin-inline: auto; padding: clamp(2.5rem, 7vw, 5.5rem) var(--gutter); }
.band.dark {
  max-width: none;
  background: linear-gradient(180deg, rgba(6, 8, 28, 0.72), rgba(6, 8, 28, 0.55));
  border-block: 1px solid transparent;
  border-image: linear-gradient(90deg, transparent, rgba(255, 224, 138, 0.6), transparent) 1;
}
.band.dark > * { max-width: 76rem; margin-inline: auto; }
.band.dark h2 { color: var(--amber-soft); }
.band.dark .fine { margin-top: 1.5rem; }
.three { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); margin-top: 1.75rem; }
.three article { padding: 1.6rem 1.5rem 1.7rem; transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease; }
.three article:hover { transform: translateY(-4px); border-color: rgba(255, 224, 138, 0.55); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 24px 70px -28px rgba(255, 183, 3, 0.45); }
.three article p { max-width: none; color: var(--moon-soft); }
/* a small four-point sparkle marks each card and each promise */
.three h3::before, .checks li::before {
  content: ''; display: inline-block; width: 0.8em; height: 0.8em; margin-right: 0.5em;
  background: var(--gold);
  clip-path: polygon(50% 0, 61% 39%, 100% 50%, 61% 61%, 50% 100%, 39% 61%, 0 50%, 39% 39%);
}

.split { display: grid; gap: 3rem; align-items: start; }
.split p + p { margin-top: 1rem; }
.split > div > p { color: var(--moon-soft); }
.memory-card, .quiet-card { padding: 1.75rem; }
.memory-title { font-family: var(--display); font-weight: 600; font-size: 1.25rem; margin-bottom: 0.9rem; color: var(--amber-soft); }
.memory-card ul { list-style: none; padding: 0; display: grid; gap: 0.7rem; font-size: 1rem; }
.memory-card li { color: var(--moon-soft); }
.memory-card strong { color: var(--moon); }
.checks { list-style: none; padding: 0; display: grid; gap: 1rem; }
.checks li { padding-left: 1.9rem; position: relative; color: var(--moon-soft); }
.checks li strong { color: var(--moon); }
.checks li::before { position: absolute; left: 0; top: 0.42em; margin: 0; width: 1rem; height: 1rem; }
.quote { font-family: var(--display); font-style: italic; font-weight: 500; font-size: 1.35rem; line-height: 1.45; }
.quote-who { margin-top: 1rem; font-size: 0.95rem; color: var(--moon-soft); }

/* ---- steps: three lamps on a line ---- */
.steps { list-style: none; padding: 0; display: grid; gap: 1.75rem; margin: 1.75rem 0 2.25rem; position: relative; }
.steps::before { content: ''; position: absolute; left: 1.35rem; top: 1.5rem; bottom: 1.5rem; border-left: 2px dashed rgba(255, 224, 138, 0.4); }
.steps li { display: grid; grid-template-columns: auto 1fr; gap: 1.1rem; align-items: start; position: relative; }
.steps p { color: var(--moon-soft); }
.num {
  width: 2.75rem; height: 2.75rem; border-radius: 50%; color: var(--ink);
  background: radial-gradient(circle at 38% 32%, #fff6d2, var(--amber) 70%);
  box-shadow: 0 0 22px 2px rgba(255, 196, 60, 0.6);
  font-family: var(--display); font-weight: 700; font-size: 1.2rem; display: grid; place-items: center;
}

/* ---- pricing ---- */
.price-card { padding: 2.25rem; max-width: 42rem; display: grid; gap: 1.4rem; justify-items: start; border-color: rgba(255, 224, 138, 0.4); }
.price-lead { font-family: var(--display); font-weight: 600; font-size: 1.6rem; line-height: 1.25; }

/* ---- faq ---- */
.faq details { padding: 0.15rem 1.4rem; max-width: 48rem; margin-top: 0.8rem; border-radius: 20px; }
.faq summary { cursor: pointer; font-family: var(--display); font-weight: 600; font-size: 1.2rem; padding: 1rem 2rem 1rem 0; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 0; top: 0.75rem; font-size: 1.6rem; line-height: 1; color: var(--amber-soft); transition: transform 200ms ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details[open] { border-color: rgba(255, 224, 138, 0.45); }
.faq details p { padding-bottom: 1.1rem; color: var(--moon-soft); }
.faq > h1 { margin-bottom: 1.25rem; }

.closing { text-align: center; display: grid; gap: 1.75rem; justify-items: center; position: relative; }
.closing::before {
  content: ''; position: absolute; left: 50%; top: 50%; width: min(90vw, 44rem); aspect-ratio: 1; transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(255, 183, 3, 0.2), transparent 70%); z-index: -1; pointer-events: none;
}
.closing .cta-row { justify-content: center; margin: 0; }
.closing h2 { max-width: 18ch; font-size: clamp(2.2rem, 5vw, 3.6rem); }

.foot { background: rgba(6, 8, 28, 0.7); border-top: 1px solid var(--hairline); padding: 2.5rem var(--gutter); font-size: 0.95rem; color: var(--moon-soft); }
.foot strong { color: var(--moon); }
.foot p { margin-bottom: 0.5rem; max-width: none; }
.foot nav { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 1rem; }

/* ---- sections rise gently into view (only when scripting is on) ---- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---- the science page: a long article, set for reading ---- */
.article { max-width: 54rem; margin-inline: auto; padding: clamp(1.5rem, 5vw, 3.5rem) var(--gutter) clamp(2.5rem, 7vw, 5rem); }
.article section { margin-top: clamp(2.5rem, 6vw, 4rem); }
.article p + p, .article ul + p, .article .table-wrap + p { margin-top: 1rem; }
.article h3 { margin-top: 1.75rem; }
.article-head h1 { max-width: 16ch; margin-bottom: 1.25rem; }
.article-head .fine { margin-top: 1rem; }
.crumbs { font-size: 0.95rem; color: var(--moon-soft); margin-bottom: 1.5rem; }
.plain { display: grid; gap: 0.5rem; margin-top: 1rem; max-width: var(--measure); }
.plain li::marker { color: var(--amber); }
.ref { font-size: 0.85em; font-weight: 700; text-decoration: none; padding: 0 0.1em; }
.ref:hover { text-decoration: underline; }

.figures { list-style: none; padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin-top: 1.5rem; }
.figures li { padding: 1.4rem 1.4rem 1.5rem; }
.figures li p:last-child { color: var(--moon-soft); }
.figure-n { font-family: var(--display); font-weight: 600; font-size: clamp(2.2rem, 5vw, 2.9rem); line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 0.45rem; text-wrap: balance; }

.table-wrap { overflow-x: auto; margin-top: 1.25rem; }
table { border-collapse: separate; border-spacing: 0; width: 100%; max-width: 46rem; overflow: hidden; font-size: 1rem; }
.table-wrap table { border-radius: 18px; }
caption { text-align: left; font-weight: 700; padding: 0 0.75rem 0.7rem; color: var(--amber-soft); }
th, td { text-align: left; padding: 0.8rem 1rem; border-top: 1px solid var(--hairline); vertical-align: top; }
thead th { border-top: none; background: rgba(255, 255, 255, 0.1); font-family: var(--display); font-weight: 600; }
tbody th { font-weight: 400; }
td { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; color: var(--amber-soft); }

.note { border-left: 6px solid var(--amber); padding: 1.6rem 1.6rem 1.8rem; }
.sources { display: grid; gap: 0.9rem; margin-top: 1rem; max-width: 46rem; font-size: 1rem; color: var(--moon-soft); }
.sources li:target { background: rgba(255, 183, 3, 0.18); outline: 8px solid rgba(255, 183, 3, 0.18); border-radius: 4px; color: var(--moon); }
.sources a { overflow-wrap: anywhere; }
.sources + .fine { margin-top: 1.5rem; }

@media (min-width: 900px) {
  .hero { grid-template-columns: 1.1fr 0.9fr; }
  .split { grid-template-columns: 1fr 1fr; }
}

/* Stillness for those who ask for it: the sky stays, nothing moves. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
  .sky i { opacity: 0.7; }
  .lamp::before, .lamp::after { display: none; }
}

/* Browsers without glass: a solid panel keeps the text readable. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .tablet, .three article, .memory-card, .quiet-card, .price-card, .faq details, .figures li, .note, .table-wrap table { background: #1c2158; }
}

/* phones: the section links are one scroll away; keep the header to the brand and sign-in */
@media (max-width: 640px) {
  .topnav a:not(.btn) { display: none; }
  .aurora { filter: blur(60px); }
  td { white-space: normal; }
}