:root {
  --bg: #eef7ff;
  --surface: rgba(255, 255, 255, .92);
  --surface-solid: #ffffff;
  --text: #10233f;
  --muted: #5b6c86;
  --line: rgba(20, 99, 255, .16);
  --primary: #1463ff;
  --primary-strong: #0a46c8;
  --cyan: #18b8d8;
  --green: #20a66a;
  --gold: #f2b632;
  --danger: #d8334a;
  --shadow: 0 18px 48px rgba(20, 56, 110, .16);
  --radius: 8px;
  color-scheme: light;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}

[data-theme="dark"] {
  --bg: #081527;
  --surface: rgba(13, 30, 55, .9);
  --surface-solid: #0d1e37;
  --text: #f4f9ff;
  --muted: #b5c4da;
  --line: rgba(111, 184, 255, .22);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 10%, rgba(24, 184, 216, .18), transparent 26rem),
    radial-gradient(circle at 85% 0%, rgba(242, 182, 50, .18), transparent 24rem),
    var(--bg);
  color: var(--text);
}

button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 12px;
  z-index: 10;
  background: var(--text);
  color: var(--surface-solid);
  padding: 10px 14px;
  border-radius: var(--radius);
}
.skip-link:focus { top: 12px; }
.setup-warning {
  max-width: 1100px;
  margin: 18px auto 0;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: #fff3cd;
  color: #6d4b00;
  border: 1px solid rgba(242, 182, 50, .48);
  font-weight: 800;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px clamp(16px, 4vw, 42px);
  backdrop-filter: blur(18px);
  background: rgba(238, 247, 255, .78);
  border-bottom: 1px solid var(--line);
}
[data-theme="dark"] .topbar { background: rgba(8, 21, 39, .78); }

.brand-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 0;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  padding: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-weight: 900;
  letter-spacing: .03em;
  box-shadow: 0 10px 26px rgba(20, 99, 255, .28);
}
.brand-button small { display: block; color: var(--muted); font-size: 12px; }
.top-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

.primary-btn, .secondary-btn, .ghost-btn {
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  padding: 10px 16px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.primary-btn {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  box-shadow: 0 12px 28px rgba(20, 99, 255, .26);
}
.secondary-btn {
  background: var(--surface-solid);
  color: var(--primary-strong);
  border: 1px solid var(--line);
}
.ghost-btn {
  background: rgba(255, 255, 255, .54);
  color: var(--text);
  border: 1px solid var(--line);
}
[data-theme="dark"] .ghost-btn { background: rgba(255, 255, 255, .08); }
.large { min-height: 52px; padding-inline: 22px; font-size: 16px; }
.primary-btn:hover, .secondary-btn:hover, .ghost-btn:hover { transform: translateY(-2px); }
.primary-btn:focus-visible, .secondary-btn:focus-visible, .ghost-btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid rgba(242, 182, 50, .72);
  outline-offset: 2px;
}

.screen {
  display: none;
  min-height: calc(100vh - 74px);
  padding: clamp(20px, 4vw, 44px);
}
.screen.active { display: block; }
.panel-screen { max-width: 1180px; margin: 0 auto; }
.screen-heading {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}
.eyebrow {
  margin: 0 0 7px;
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .09em;
  text-transform: uppercase;
}
[data-theme="dark"] .eyebrow { color: #80caff; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 {
  margin: 0;
  font-size: clamp(48px, 8vw, 96px);
  line-height: .94;
  letter-spacing: 0;
}
h2 { margin: 0; font-size: clamp(28px, 4vw, 48px); line-height: 1.05; letter-spacing: 0; }
h3 { margin: 0 0 10px; font-size: 20px; }
.subtitle { font-size: clamp(20px, 3vw, 30px); font-weight: 900; color: var(--gold); margin: 14px 0; }
.hero-text { max-width: 640px; font-size: 18px; color: var(--muted); line-height: 1.7; }

.landing-screen {
  position: relative;
  overflow: hidden;
  display: none;
}
.landing-screen.active { display: grid; align-items: center; }
.city-backdrop {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}
.city-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(238, 247, 255, .28), var(--bg)),
    repeating-linear-gradient(90deg, transparent 0 72px, rgba(255,255,255,.08) 72px 73px);
}
[data-theme="dark"] .city-backdrop::after { background: linear-gradient(180deg, rgba(8, 21, 39, .22), var(--bg)); }
.particle-field::before, .particle-field::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 14vw 12vh 0 var(--cyan), 36vw 22vh 0 rgba(255,255,255,.8), 72vw 18vh 0 var(--gold), 88vw 44vh 0 var(--cyan);
  animation: floatParticles 9s ease-in-out infinite;
}
.landing-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, .7fr);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-aivi {
  display: grid;
  justify-items: center;
  gap: 12px;
}

.dialogue {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 14px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text);
  line-height: 1.5;
}
.bubble-right { max-width: 340px; }

.asset-wrap {
  display: inline-grid;
  place-items: center;
  position: relative;
  max-width: 100%;
}
.asset-wrap img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: auto;
}
.asset-fallback {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 35% 25%, rgba(255,255,255,.85), transparent 22%),
    linear-gradient(135deg, rgba(20,99,255,.92), rgba(24,184,216,.9));
  color: white;
  border: 1px solid rgba(255,255,255,.55);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.16);
  font-weight: 900;
}
.asset-fallback-avatar { border-radius: 50%; }
.asset-fallback-badge { border-radius: 50%; background: linear-gradient(135deg, #b8c7da, #6f84a3); }
.asset-character .asset-wrap, .aivi-large .asset-wrap { width: min(340px, 72vw); aspect-ratio: 1; }
.aivi-medium .asset-wrap { width: 150px; aspect-ratio: 1; }
.aivi-small .asset-wrap { width: 86px; aspect-ratio: 1; }
.avatar-img { aspect-ratio: 1; }
.avatar-chip .asset-wrap, .selected-avatar .asset-wrap { width: 64px; aspect-ratio: 1; }
.large-chip .asset-wrap { width: 88px; }

.language-grid, .avatar-grid, .principle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
}
.language-card, .avatar-card, .principle-grid article, .quest-form, .guide-card, .portfolio-panel, .result-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.language-card {
  min-height: 148px;
  padding: 22px;
  cursor: pointer;
  text-align: left;
}
.language-symbol {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(20,99,255,.13), rgba(24,184,216,.22));
  color: var(--primary-strong);
  font-weight: 900;
  margin-bottom: 18px;
}
.language-card strong { font-size: 22px; }

.profile-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.guide-card, .quest-form { padding: clamp(18px, 3vw, 28px); }
.quest-form { display: grid; gap: 16px; }
label { display: grid; gap: 7px; color: var(--muted); font-weight: 800; }
input, select, textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-solid);
  color: var(--text);
  padding: 10px 12px;
}
textarea { min-height: 100px; resize: vertical; }
.avatar-toolbar {
  display: flex;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
}
.field-title { display: block; font-weight: 900; color: var(--text); }
.avatar-toolbar small { color: var(--muted); }
.avatar-card {
  padding: 12px;
  cursor: pointer;
  text-align: center;
  border-width: 2px;
}
.avatar-card .asset-wrap { width: min(120px, 100%); aspect-ratio: 1; margin: 0 auto 8px; }
.avatar-card.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(20,99,255,.13), var(--shadow);
}

.principle-grid article { padding: 20px; }
.principle-grid span {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-weight: 900;
  margin-bottom: 14px;
}
.principle-grid p { color: var(--muted); line-height: 1.55; }
.journey-strip {
  margin: 22px 0;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto;
  gap: 12px;
  align-items: center;
}
.journey-strip span { height: 3px; background: linear-gradient(90deg, var(--primary), var(--gold)); border-radius: 9px; }

.result-card {
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 34px);
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  align-items: center;
}
.result-visuals {
  display: grid;
  justify-items: center;
  gap: 10px;
}
.score-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}
.score-row span, .progress-pill {
  border: 1px solid var(--line);
  background: var(--surface-solid);
  padding: 10px 12px;
  border-radius: var(--radius);
  font-weight: 900;
}
.badge-popup {
  margin: 16px 0;
  padding: 16px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(242,182,50,.18), rgba(24,184,216,.16));
  border: 1px solid rgba(242,182,50,.42);
  box-shadow: 0 0 32px rgba(242,182,50,.24);
}
.result-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }

.portfolio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 18px;
}
.portfolio-panel { padding: 20px; }
.work-item {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  background: var(--surface-solid);
}
.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(92px, 1fr));
  gap: 12px;
}
.badge-tile {
  display: grid;
  justify-items: center;
  gap: 8px;
  text-align: center;
  font-size: 12px;
  font-weight: 900;
}
.badge-tile .asset-wrap { width: 70px; aspect-ratio: 1; }
.badge-locked { opacity: .45; filter: grayscale(1); }
.badge-earned .asset-wrap { filter: drop-shadow(0 0 14px rgba(242,182,50,.55)); }
.certificate-status {
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface-solid);
}

@keyframes floatParticles {
  0%, 100% { transform: translate3d(0, 0, 0); opacity: .6; }
  50% { transform: translate3d(8px, -18px, 0); opacity: 1; }
}

[data-reduced-motion="true"] *, @media (prefers-reduced-motion: reduce) {
  animation-duration: .01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: .01ms !important;
  scroll-behavior: auto !important;
}

@media (max-width: 860px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .top-actions { justify-content: flex-start; }
  .landing-grid, .profile-layout, .portfolio-grid, .result-card { grid-template-columns: 1fr; }
  .hero-aivi { order: -1; }
  .screen { padding-inline: 16px; }
  .journey-strip { grid-template-columns: 1fr; text-align: center; }
  .journey-strip span { min-height: 3px; }
}

@media (max-width: 560px) {
  .brand-button small { display: none; }
  .ghost-btn { min-height: 38px; padding: 8px 10px; font-size: 13px; }
  h1 { font-size: 46px; }
  h2 { font-size: 30px; }
  .screen-heading { align-items: flex-start; }
  .avatar-toolbar { align-items: flex-start; flex-direction: column; }
}