/* The front page (templates/landing.html), on top of auth.css: a hero with the sign-in form beside a drill playing itself
   (landing.js), then what the drill is, in sections that fade in as they scroll into view. Drawn with the look's tokens
   (looks.css); the only colours of its own are the look buttons' previews, which show the other looks. */
main { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 28px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.small { font-size: 0.875rem; }

/* ---------- header ---------- */
.lnav { margin-left: auto; display: flex; align-items: center; gap: 20px; }
.lnav-link { color: var(--muted); font-weight: 600; text-decoration: none; }
.lnav-link:hover { color: var(--text); }
.lnav .button { margin: 0; }
@media (max-width: 520px) { .lnav-link { display: none; } }

/* ---------- hero: the words and the sign-in form, beside the drill playing itself ---------- */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 64px; align-items: center;
  min-height: calc(100vh - 64px); padding: 72px 0 96px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin: 0; padding: 6px 14px 6px 10px; border-radius: 999px;
  background: var(--card-bg); border: 1px solid var(--card-line); backdrop-filter: var(--card-blur);
  color: var(--muted); font-size: 0.875rem; font-weight: 700;
}
.pip { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 calc(10px * var(--glow)) var(--accent); }
.motion .pip { animation: pip 2.4s ease-in-out infinite; }
@keyframes pip { 50% { opacity: 0.45; transform: scale(0.8); } }
.hero h1 {
  margin: 20px 0 18px; font: var(--display-weight) clamp(2.5rem, 1rem + 3.8vw, 4.75rem)/1.02 var(--font-display);
  letter-spacing: -0.025em; text-wrap: balance; color: var(--text);
}
[data-look="arcade"] .hero h1, [data-look="arcade"] .cta h2 {
  background: linear-gradient(100deg, #e9fbff 0%, #67e8f9 30%, #a855f7 70%, #f472b6 100%); -webkit-background-clip: text; background-clip: text; color: transparent;
}
[data-look="club"] .hero h1, [data-look="club"] .cta h2 {
  background: linear-gradient(180deg, #fdf0c8 5%, #f0c75e 95%); -webkit-background-clip: text; background-clip: text; color: transparent;
  /* the Club's h1 shadow (looks.css) would paint over text drawn this way, so it's cast behind the letters instead */
  text-shadow: none; filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.5)) drop-shadow(0 0 24px rgba(228, 180, 69, 0.25));
}
[data-look="pop"] .hero h1, [data-look="pop"] .cta h2 {
  background: linear-gradient(100deg, #7c3aed 10%, #db2777 90%); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { margin: 0 0 30px; max-width: 34em; font-size: 1.1875rem; line-height: 1.55; color: color-mix(in srgb, var(--text) 84%, transparent); }

.signin {
  max-width: 31rem; padding: 22px 24px 18px;
  background: var(--card-bg); border: 1px solid var(--card-line); border-radius: var(--card-radius);
  box-shadow: var(--card-shadow), 0 30px 80px rgba(0, 0, 0, 0.22); backdrop-filter: var(--card-blur);
}
.signin h2 { margin: 0 0 12px; font-size: 1.25rem; }
.signin-row { display: flex; gap: 8px; }
.signin-row input { flex: 1; min-width: 0; }
.signin-row .button { margin: 0; white-space: nowrap; }
.signin > .muted { margin: 8px 0 0; }
.newhere { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.newhere .button { margin: 0; }
@media (max-width: 480px) { .signin-row { flex-direction: column; } }

/* ---------- the drill playing itself (landing.js): a board seen at a slight angle, the drill's moments round it ---------- */
.demo { position: relative; margin: 0; justify-self: center; width: min(100%, 560px); }
.demo::before {  /* the look's glow behind the board */
  content: ""; position: absolute; inset: -12%; z-index: -1; border-radius: 50%; pointer-events: none;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 30%, transparent), color-mix(in srgb, var(--accent-2) 14%, transparent) 55%, transparent 75%);
  opacity: calc(0.35 + 0.45 * var(--glow));
}
.demo-tilt { position: relative; transform: perspective(1600px) rotateY(-9deg) rotateX(5deg); transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.demo:hover .demo-tilt { transform: perspective(1600px) rotateY(-3deg) rotateX(2deg); }
.dboard {
  position: relative; width: 100%; aspect-ratio: 1; display: grid; grid-template: repeat(8, 1fr) / repeat(8, 1fr);
  border: var(--board-frame); border-radius: var(--board-radius); box-shadow: var(--board-shadow); overflow: hidden; isolation: isolate;
  transition: opacity 0.35s;
}
.dboard.fade { opacity: 0.15; }
.dsq { position: relative; }
.dsq.light { background: var(--sq-light); }
.dsq.dark { background: var(--sq-dark); }
.dsq.last::before, .dsq.sel::before { content: ""; position: absolute; inset: 0; }
.dsq.last::before { background: var(--last); }
.dsq.sel::before { background: var(--sel); }
.dsq.check::after {  /* the king in check */
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle, color-mix(in srgb, var(--loss) 90%, transparent) 0, color-mix(in srgb, var(--loss) 40%, transparent) 45%, transparent 72%);
}
.dpiece { position: absolute; left: calc(var(--f) * 12.5%); top: calc(var(--r) * 12.5%); width: 12.5%; height: 12.5%; z-index: 2; pointer-events: none; }
.dpiece.held { z-index: 4; }
.dflash {  /* the square the piece lands on, lit for a moment */
  position: absolute; left: calc(var(--f) * 12.5%); top: calc(var(--r) * 12.5%); width: 12.5%; height: 12.5%; z-index: 3; pointer-events: none;
  border-radius: 8%; box-shadow: inset 0 0 0 3px var(--accent), 0 0 24px color-mix(in srgb, var(--accent) 60%, transparent); opacity: 0;
}
.darrows { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 3; pointer-events: none; filter: drop-shadow(0 2px 3px rgba(0, 0, 0, var(--arrow-shade))); }
.darrows g, .darrows circle { opacity: 0; transition: opacity 0.4s; }
.darrows g.on { opacity: var(--arrow-alpha); }
.darrows circle.on { opacity: 0.9; }
.darrows .tone-best { color: var(--arrow-best); }
.darrows .tone-played { color: var(--arrow-played); }
.darrows .tone-warn { color: var(--arrow-warn); }

.dcard {
  position: absolute; z-index: 6; display: grid; gap: 2px; padding: 10px 16px;
  background: var(--card-solid); border: 1px solid var(--card-line); border-radius: 12px; box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
}
.dhead { bottom: calc(100% + 14px); left: -14px; }  /* above the board, clear of its squares */
.dhead b { font: var(--display-weight) 1.0625rem var(--font-display); }
.dhead .muted { font-size: 0.875rem; }
.dchip {
  position: absolute; z-index: 6; display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px;
  background: var(--card-solid); border: 1px solid var(--card-line); box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
  font-size: 0.9375rem; font-weight: 700; white-space: nowrap;
  opacity: 0; transform: translateY(10px) scale(0.94);
  transition: opacity 0.35s, transform 0.5s cubic-bezier(0.2, 1.4, 0.4, 1);
}
.dchip.on { opacity: 1; transform: none; }
.dchip svg { width: 18px; height: 18px; flex: none; }
.dchip.played { top: 62%; left: -34px; }
.dchip.played i { width: 10px; height: 10px; border-radius: 50%; background: var(--loss); box-shadow: 0 0 calc(8px * var(--glow)) var(--loss); }
.dchip.verdict { top: 41%; right: -44px; color: var(--win); border-color: color-mix(in srgb, var(--win) 45%, var(--card-line)); background: color-mix(in srgb, var(--win) 12%, var(--card-solid)); }
.dchip.verdict span { color: var(--text); }
.dchip.verdict b { color: var(--win); }
.dchip.verdict svg { fill: none; stroke: currentColor; stroke-width: 2.8; stroke-linecap: round; stroke-linejoin: round; }
.dchip.streak { top: calc(100% + 16px); left: 0; }  /* under the board */
.dchip.streak svg { fill: var(--c2); filter: drop-shadow(0 0 calc(5px * var(--glow)) var(--c2)); }
.dchip.stage { top: calc(100% + 16px); right: 0; font-weight: 600; }
.dchip.stage .muted { font-weight: 500; }

/* the drill's stages, in the colours the app's progress bar gives them */
.stg { display: inline-flex; align-items: center; gap: 6px; }
.stg i { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.stg.blunder i { background: var(--loss); }
.stg.novice i { background: var(--c1); }
.stg.junior i { background: color-mix(in srgb, var(--win) 55%, transparent); }
.stg.mastered i { background: var(--win); }

@media (max-width: 1060px) {
  .hero { grid-template-columns: 1fr; gap: 110px; min-height: 0; padding-top: 40px; }
  .demo { width: min(100%, 520px); }
}
@media (max-width: 640px) {
  main { padding: 0 16px; }
  .demo-tilt, .demo:hover .demo-tilt { transform: none; }
  .dhead { left: 0; }
  .dchip { font-size: 0.875rem; padding: 7px 12px; white-space: normal; }
  /* the moments take turns under the board */
  .dchip.played, .dchip.verdict { top: calc(100% + 14px); left: 0; right: 0; width: fit-content; margin: 0 auto; }
  .dchip.streak, .dchip.stage { display: none; }
}

/* ---------- the sections ---------- */
main > section:not(.hero) { padding: 76px 0; }
main > section.cta { padding: 60px 32px; }
.section-title { margin: 0 0 12px; text-align: center; font: var(--display-weight) clamp(1.75rem, 1.1rem + 1.8vw, 2.625rem)/1.1 var(--font-display); letter-spacing: -0.015em; }
.section-lede { max-width: 36em; margin: 0 auto 36px; text-align: center; text-wrap: balance; font-size: 1.0625rem; color: var(--muted); }
.how .section-title, .why .section-title { margin-bottom: 40px; }

/* how it works: three steps, their numbers joined by a line */
.steps3 { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin: 0; padding: 0; list-style: none; }
.steps3::before {
  content: ""; position: absolute; top: 27px; left: 17%; right: 17%; height: 2px; z-index: -1;
  background: linear-gradient(90deg, transparent, var(--accent) 20%, var(--accent-2) 80%, transparent); opacity: 0.6;
}
.steps3 li { text-align: center; padding: 0 8px; }
.steps3 .num {
  display: inline-grid; place-items: center; width: 56px; height: 56px; border-radius: 50%;
  background: var(--primary-bg); color: var(--primary-fg); border: 1px solid var(--primary-line); box-shadow: var(--primary-shadow), 0 0 calc(26px * var(--glow)) color-mix(in srgb, var(--accent) 55%, transparent);
  font: var(--display-weight) 1.5rem var(--font-display);
}
.steps3 h3 { margin: 18px 0 8px; font: var(--display-weight) 1.3125rem var(--font-display); }
.steps3 p { margin: 0 auto; max-width: 22em; color: var(--muted); }
@media (max-width: 760px) {
  .steps3 { grid-template-columns: 1fr; gap: 36px; }
  .steps3::before { display: none; }
}

/* why it works: four cards */
.feats { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 18px; }
.feat {
  padding: 24px 22px; background: var(--card-bg); border: 1px solid var(--card-line); border-radius: var(--card-radius);
  box-shadow: var(--card-shadow); backdrop-filter: var(--card-blur); transition: transform 0.25s, border-color 0.25s;
}
.feat:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 60%, var(--card-line)); }
.feat svg {
  width: 58px; height: 58px; padding: 13px; border-radius: 16px; fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
  background: color-mix(in srgb, var(--accent) 13%, transparent); box-shadow: 0 0 calc(22px * var(--glow)) color-mix(in srgb, var(--accent) 30%, transparent);
}
.feat h3 { margin: 16px 0 8px; font: var(--display-weight) 1.1875rem var(--font-display); }
.feat p { margin: 0; color: var(--muted); }

/* from Blunder to Mastered: the four stages, each pointing on to the next */
.path { display: flex; flex-wrap: wrap; justify-content: center; gap: 34px; margin: 0; padding: 0; list-style: none; }
.path li {
  position: relative; display: grid; justify-items: center; gap: 6px; min-width: 170px; padding: 18px 20px;
  background: var(--card-bg); border: 1px solid var(--card-line); border-radius: var(--card-radius); box-shadow: var(--card-shadow); backdrop-filter: var(--card-blur);
}
.path li i { width: 16px; height: 16px; border-radius: 5px; }
.path li.blunder i { box-shadow: 0 0 calc(14px * var(--glow)) var(--loss); }
.path li.mastered i { box-shadow: 0 0 calc(14px * var(--glow)) var(--win); }
.path b { font: var(--display-weight) 1.1875rem var(--font-display); }
.path span { color: var(--muted); font-size: 0.875rem; }
.path li + li::before {  /* a chevron from the stage before */
  content: ""; position: absolute; left: -24px; top: 50%; width: 11px; height: 11px; margin-top: -6px;
  border-top: 2px solid var(--muted); border-right: 2px solid var(--muted); transform: rotate(45deg); opacity: 0.7;
}
@media (max-width: 860px) { .path { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; } .path li { min-width: 0; } .path li + li::before { display: none; } }

/* play in your look: a button for each, showing its ground, its board and its accent */
.swatches { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.swatch {
  display: grid; justify-items: center; gap: 12px; min-width: 190px; padding: 14px 16px 14px;
  background: var(--card-bg); border: 1px solid var(--card-line); border-radius: var(--card-radius); color: var(--text); margin: 0;
}
.swatch[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent), 0 0 calc(24px * var(--glow)) color-mix(in srgb, var(--accent) 45%, transparent); }
.sw-art { position: relative; display: grid; grid-template-columns: repeat(2, 24px); grid-template-rows: repeat(2, 24px); place-content: center; width: 150px; height: 84px; border-radius: 12px; overflow: hidden; }
.sw-art i:nth-child(1), .sw-art i:nth-child(4) { background: var(--sw-l); }
.sw-art i:nth-child(2), .sw-art i:nth-child(3) { background: var(--sw-d); }
.sw-art::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 10px; height: 4px; border-radius: 2px; background: var(--sw-a); }
.swatch.arcade .sw-art { --sw-l: #dfe4fb; --sw-d: #6b76bd; --sw-a: linear-gradient(90deg, #22d3ee, #a855f7);
  background: radial-gradient(90px 60px at 10% 0%, rgba(168, 85, 247, 0.6), transparent), radial-gradient(90px 60px at 100% 10%, rgba(34, 211, 238, 0.45), transparent), #090c1b; }
.swatch.club .sw-art { --sw-l: #f0ddb9; --sw-d: #a7764d; --sw-a: linear-gradient(90deg, #f6d677, #b8841f);
  background: radial-gradient(120px 60px at 50% 0%, rgba(228, 180, 69, 0.3), transparent), #0b1914; }
@media (max-width: 640px) {
  .swatches { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .swatch { min-width: 0; padding: 10px 6px; gap: 8px; font-size: 0.8125rem; }
  .sw-art { width: 100%; height: 60px; grid-template-columns: repeat(2, 18px); grid-template-rows: repeat(2, 18px); }
  .sw-art::after { left: 10px; right: 10px; bottom: 7px; height: 3px; }
}
.swatch.pop .sw-art { --sw-l: #f4f8e4; --sw-d: #72b86a; --sw-a: linear-gradient(90deg, #7c3aed, #db2777);
  background: radial-gradient(90px 60px at 0% 0%, #ffcdb5, transparent), radial-gradient(90px 60px at 100% 100%, #e0cfff, transparent), #fff8f0; }

/* the last word */
.cta {
  max-width: 940px; margin: 30px auto 90px; text-align: center;
  background: var(--card-bg); border: 1px solid var(--card-line); border-radius: calc(var(--card-radius) * 1.5);
  box-shadow: var(--card-shadow), 0 0 calc(80px * var(--glow)) color-mix(in srgb, var(--accent-2) 22%, transparent); backdrop-filter: var(--card-blur);
}
.cta h2 { margin: 0 0 10px; font: var(--display-weight) clamp(1.75rem, 1.1rem + 2vw, 2.75rem)/1.1 var(--font-display); letter-spacing: -0.02em; text-wrap: balance; }
.cta > p:first-of-type { margin: 0 0 26px; font-size: 1.1875rem; color: var(--muted); }
.button.big { padding: 14px 30px; font-size: 1.125rem; margin: 0; }
.cta .small { margin: 14px 0 0; }

/* ---------- motion: sections rise into view (landing.js adds .motion unless motion is off) ---------- */
.motion .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.motion .reveal.in { opacity: 1; transform: none; }
.motion .steps3 li:nth-child(2), .motion .feat:nth-child(2) { transition-delay: 0.12s; }
.motion .steps3 li:nth-child(3), .motion .feat:nth-child(3) { transition-delay: 0.24s; }
.motion .feat:nth-child(4) { transition-delay: 0.36s; }
@media (prefers-reduced-motion: reduce) { .demo-tilt { transition: none; } }