/* Author: Yogabrata Mukhopadhyay
   Organization: Brahmexa
   Copyright (c) 2026 Brahmexa. All rights reserved.
   Learn AI — circular planet classroom. */

.learn-ai-page {
  --lai-stage: 960px;
  --lai-cyan: #67e8f9;
  --lai-amber: #fbbf24;
  --lai-violet: #c4b5fd;
}

.lai-skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 80;
  background: #0f172a;
  color: var(--lai-cyan);
  padding: 8px 12px;
  border-radius: 8px;
}
.lai-skip:focus { top: 12px; }

.lai-top {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 14px 20px 6px;
}
.lai-back {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.lai-back:hover { color: var(--lai-cyan); }
.lai-brand { text-align: center; }
.lai-brand strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.lai-brand span {
  display: block;
  margin-top: 2px;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.lai-progress {
  justify-self: end;
  font-size: 0.82rem;
  color: var(--lai-cyan);
  margin: 0;
}

.lai-main {
  position: relative;
  z-index: 5;
  flex: 1;
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 8px 16px 40px;
}

.lai-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 8px;
}
.lai-tabs {
  display: flex;
  gap: 8px;
}
.lai-tab,
.lai-sun,
.lai-planet,
.lai-choice,
.lai-step,
.lai-near,
.lai-nav button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
.lai-tab {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(15, 23, 42, 0.72);
}
.lai-tab[aria-selected="true"] {
  border-color: rgba(103, 232, 249, 0.7);
  color: #f8fafc;
  box-shadow: 0 0 0 1px rgba(103, 232, 249, 0.35);
}
.lai-search { position: relative; flex: 1; max-width: 320px; }
.lai-search input {
  width: 100%;
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(15, 23, 42, 0.82);
  color: var(--text);
  padding: 0 16px;
}
.lai-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(103, 232, 249, 0.28);
  border-radius: 14px;
  z-index: 30;
}
.lai-results button {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  min-height: 44px;
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}
.lai-results button:hover,
.lai-results button:focus-visible { background: rgba(103, 232, 249, 0.12); }
.lai-results small { display: block; color: var(--muted); }

.lai-intro {
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
  margin: 4px 0 12px;
}

.lai-fit {
  position: relative;
  width: 100%;
  margin: 0 auto;
}
.lai-stage {
  position: relative;
  width: var(--lai-stage);
  height: var(--lai-stage);
  margin: 0 auto;
  transform-origin: top center;
}
.lai-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.lai-ring-guide {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--ring-tint);
  animation: lai-breathe 7s ease-in-out infinite;
}
.lai-ring-spin {
  position: absolute;
  inset: 0;
  transform-origin: center;
  animation-name: lai-spin;
  animation-duration: var(--ring-spin);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  animation-direction: var(--ring-dir, normal);
}
.lai-legend {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.78rem;
}
.lai-legend span { display: inline-flex; align-items: center; gap: 6px; }
.lai-swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  box-shadow: 0 0 8px currentColor;
}

.lai-sun {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 8;
  width: 136px;
  height: 136px;
  border-radius: 50%;
  border: 0;
  padding: 16px;
  background:
    radial-gradient(circle at 40% 32%, rgba(253, 230, 138, 0.95), rgba(217, 119, 6, 0.55) 42%, rgba(15, 23, 42, 0.2) 72%);
  box-shadow:
    0 0 0 1px rgba(251, 191, 36, 0.7),
    0 0 48px rgba(251, 191, 36, 0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.lai-sun strong { font-size: 0.92rem; color: #1c1408; }
.lai-sun em {
  font-style: normal;
  font-size: 0.68rem;
  color: #3f2d0c;
  margin-top: 4px;
  line-height: 1.3;
}
.lai-sun:hover,
.lai-sun:focus-visible { transform: translate(-50%, -50%) scale(1.05); }
.lai-sun:focus-visible { outline: 2px solid #fff; outline-offset: 4px; }

.lai-planet {
  position: absolute;
  z-index: 6;
  width: 58px;
  height: 58px;
  padding: 0;
  border: 0;
  background: transparent;
  transform: translate(-50%, -50%);
  pointer-events: auto;
}
.lai-planet-body {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(71, 85, 105, 0.95), rgba(15, 23, 42, 0.98));
  box-shadow: 0 0 0 1px var(--ring-tint), 0 8px 18px rgba(0, 0, 0, 0.45);
  transform-origin: center;
  animation-name: lai-spin;
  animation-duration: var(--ring-spin);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  animation-direction: var(--body-dir, reverse);
  transition: width 0.32s ease, height 0.32s ease, box-shadow 0.32s ease;
}
.lai-face, .lai-expanded {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 2px;
  line-height: 1.15;
}
.lai-emblem { font-size: 1.15rem; }
.lai-short {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #e2e8f0;
}
.lai-expanded { display: none; padding: 10px; }
.lai-expanded b { font-size: 0.82rem; color: #f8fafc; }
.lai-expanded small { font-size: 0.68rem; color: #cbd5e1; }

.lai-planet:hover,
.lai-planet:focus-visible,
.lai-planet.is-focus {
  z-index: 40;
  width: 148px;
  height: 148px;
}
.lai-planet:hover .lai-planet-body,
.lai-planet:focus-visible .lai-planet-body,
.lai-planet.is-focus .lai-planet-body {
  width: 148px;
  height: 148px;
  box-shadow:
    0 0 0 2px var(--ring-tint),
    0 0 36px var(--ring-tint);
}
.lai-planet:hover .lai-face,
.lai-planet:focus-visible .lai-face,
.lai-planet.is-focus .lai-face { display: none; }
.lai-planet:hover .lai-expanded,
.lai-planet:focus-visible .lai-expanded,
.lai-planet.is-focus .lai-expanded { display: flex; }
.lai-planet:focus-visible { outline: none; }
.lai-planet.is-held .lai-planet-body {
  box-shadow:
    0 0 0 2px #fbbf24,
    0 0 16px rgba(251, 191, 36, 0.45),
    0 8px 18px rgba(0, 0, 0, 0.45);
}
.lai-planet.is-dim .lai-planet-body { opacity: 0.28; }
.lai-ring:has(.lai-planet:hover) .lai-ring-spin,
.lai-ring:has(.lai-planet:focus-visible) .lai-ring-spin,
.lai-ring:has(.lai-planet:hover) .lai-planet-body,
.lai-ring:has(.lai-planet:focus-visible) .lai-planet-body,
.lai-ring:has(.lai-planet.is-focus) .lai-ring-spin,
.lai-ring:has(.lai-planet.is-focus) .lai-planet-body {
  animation-play-state: paused;
}

.lai-path { max-width: 720px; margin: 12px auto 0; }
.lai-group { margin: 0 0 22px; }
.lai-group h2 {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--group-tint, var(--lai-cyan));
  margin-bottom: 10px;
}
.lai-steps { list-style: none; display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; }
.lai-step {
  width: 100%;
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 12px;
  align-items: center;
  text-align: left;
  min-height: 64px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(15, 23, 42, 0.72);
}
.lai-step:hover,
.lai-step:focus-visible { border-color: var(--group-tint, var(--lai-cyan)); }
.lai-step-orb {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 35% 30%, rgba(71, 85, 105, 0.95), rgba(2, 6, 23, 0.98));
  box-shadow: 0 0 0 1px var(--group-tint, var(--lai-cyan));
}
.lai-step b { display: block; }
.lai-step small { color: var(--muted); }
.lai-mark { color: #fbbf24; font-size: 0.78rem; }

.lai-lesson {
  max-width: 680px;
  margin: 8px auto 0;
  padding: 8px 8px 24px;
}
.lai-lesson-head { text-align: center; }
.lai-lesson-orb {
  width: 92px;
  height: 92px;
  margin: 0 auto 12px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 2rem;
  background: radial-gradient(circle at 35% 30%, rgba(71, 85, 105, 0.95), rgba(2, 6, 23, 0.98));
  box-shadow: 0 0 0 2px var(--ring-tint, var(--lai-cyan)), 0 0 32px var(--ring-tint, var(--lai-cyan));
}
.lai-kicker {
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--ring-tint, var(--lai-cyan));
}
.lai-lesson h1 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  letter-spacing: -0.03em;
  margin: 4px 0;
}
.lai-count { color: var(--muted); font-size: 0.85rem; }
.lai-card {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(148, 163, 184, 0.18);
}
.lai-card h2 {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.lai-say {
  border-color: rgba(103, 232, 249, 0.35);
  color: #f8fafc;
  font-size: 1.05rem;
}
.lai-nearby { display: flex; flex-wrap: wrap; gap: 8px; }
.lai-near {
  min-height: 44px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(2, 6, 23, 0.45);
}
.lai-near:hover,
.lai-near:focus-visible { border-color: var(--lai-cyan); }
.lai-choices { display: flex; flex-direction: column; gap: 8px; }
.lai-choice {
  text-align: left;
  min-height: 48px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(2, 6, 23, 0.4);
}
.lai-choice:hover,
.lai-choice:focus-visible { border-color: var(--lai-cyan); }
.lai-choice.is-right {
  border-color: rgba(52, 211, 153, 0.8);
  background: rgba(6, 78, 59, 0.45);
}
.lai-choice.is-miss {
  border-color: rgba(251, 191, 36, 0.7);
}
.lai-feedback {
  margin-top: 10px;
  color: #e2e8f0;
}
.lai-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}
.lai-nav button {
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(103, 232, 249, 0.45);
  background: rgba(15, 23, 42, 0.8);
}
.lai-nav button:disabled { opacity: 0.4; cursor: default; }

.lai-foot {
  position: relative;
  z-index: 5;
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 8px 16px 24px;
}
.lai-foot a { color: var(--lai-cyan); text-decoration: none; }

@keyframes lai-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes lai-breathe {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

@media (max-width: 720px) {
  .lai-top { grid-template-columns: 1fr; justify-items: center; }
  .lai-progress { justify-self: center; }
  .lai-search { max-width: none; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .lai-ring-guide,
  .lai-ring-spin,
  .lai-planet-body,
  .orb { animation: none !important; }
  .lai-sun:hover,
  .lai-sun:focus-visible { transform: translate(-50%, -50%); }
}