:root {
  --bg: #070a12;
  --panel: #101827;
  --panel2: #162033;
  --text: #f5f7fb;
  --muted: #9aa7bd;
  --accent: #6ee7f9;
  --accent2: #a78bfa;
  --danger: #fb7185;
  --good: #34d399;
  --border: rgba(255,255,255,.1);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: radial-gradient(circle at top, #15223a, var(--bg)); color: var(--text); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.nav { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(16px); background: rgba(7,10,18,.82); border-bottom: 1px solid var(--border); }
.nav-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.logo { font-size: 24px; font-weight: 900; letter-spacing: -.04em; }
.logo span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.nav-link { color: var(--muted); padding: 10px 12px; border-radius: 999px; }
.nav-link:hover { color: var(--text); background: rgba(255,255,255,.07); }
.hero { padding: 64px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: center; }
.kicker { color: var(--accent); font-weight: 800; text-transform: uppercase; font-size: 13px; letter-spacing: .14em; }
h1 { font-size: clamp(42px, 7vw, 82px); line-height: .92; margin: 12px 0 18px; letter-spacing: -.07em; }
.lead { font-size: 20px; color: var(--muted); line-height: 1.55; max-width: 720px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.035)); border: 1px solid var(--border); border-radius: 28px; padding: 24px; box-shadow: 0 18px 70px rgba(0,0,0,.28); }
.generator { display: grid; gap: 12px; margin-top: 24px; }
.input-row { display: flex; gap: 10px; }
input { width: 100%; padding: 15px 16px; border: 1px solid var(--border); border-radius: 18px; background: rgba(255,255,255,.06); color: var(--text); outline: none; }
input:focus { border-color: var(--accent); }
.btn { border: 0; border-radius: 18px; padding: 14px 18px; cursor: pointer; color: #061018; background: linear-gradient(135deg, var(--accent), var(--accent2)); font-weight: 900; white-space: nowrap; }
.btn.secondary { background: rgba(255,255,255,.08); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); color: white; }
.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.section { padding: 32px 0; }
.section-title { font-size: 34px; margin: 0 0 16px; letter-spacing: -.04em; }
.muted { color: var(--muted); }
.topic-shell { padding: 32px 0 60px; }
.topic-header { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 22px; }
.topic-title { font-size: clamp(36px, 6vw, 64px); margin: 0; line-height: 1; letter-spacing: -.06em; }
.block { margin: 16px 0; }
.block h3 { margin: 0 0 10px; font-size: 22px; }
.block p, .block li { color: #d8deea; line-height: 1.55; }
ol, ul { padding-left: 22px; }
.badge { display: inline-flex; align-items: center; border: 1px solid var(--border); background: rgba(255,255,255,.06); padding: 7px 10px; border-radius: 999px; color: var(--muted); font-size: 13px; }
.word { border-bottom: 1px dashed var(--accent); color: var(--accent); cursor: pointer; }
.vocab-list { display: grid; gap: 10px; }
.vocab-card { padding: 14px; border-radius: 18px; background: rgba(255,255,255,.055); border: 1px solid var(--border); }
.vocab-card strong { color: var(--accent); }
.flashcard { min-height: 260px; display: grid; place-items: center; text-align: center; }
.flashcard .big { font-size: 42px; font-weight: 900; letter-spacing: -.04em; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.notice { padding: 12px 14px; border-radius: 16px; border: 1px solid var(--border); background: rgba(255,255,255,.06); color: var(--muted); }
.notice.good { color: var(--good); }
.notice.bad { color: var(--danger); }
.admin-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
pre { white-space: pre-wrap; background: rgba(0,0,0,.28); border: 1px solid var(--border); padding: 14px; border-radius: 18px; color: #dce8ff; overflow:auto; }
.footer { padding: 30px 0 50px; color: var(--muted); }
@media (max-width: 780px) {
  .hero-grid, .grid.three, .grid.two, .admin-layout { grid-template-columns: 1fr; }
  .input-row { flex-direction: column; }
  .nav-inner { align-items: flex-start; padding: 14px 0; flex-direction: column; }
}
.section-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.topic-card { transition: transform .15s ease, border-color .15s ease; }
.topic-card:hover { transform: translateY(-2px); border-color: rgba(110,231,249,.5); }
.drill-list { display: grid; gap: 12px; }
.drill-card { padding: 14px; border-radius: 18px; background: rgba(255,255,255,.045); border: 1px solid var(--border); display: grid; gap: 10px; }
.answerText { margin: 0; padding: 12px; border-radius: 14px; background: rgba(110,231,249,.08); border: 1px solid rgba(110,231,249,.22); }
.hidden { display: none !important; }
.vocab-card { text-align: left; color: var(--text); width: 100%; cursor: pointer; }
.vocab-card:hover { border-color: rgba(110,231,249,.5); background: rgba(110,231,249,.08); }
.modal-backdrop { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.68); display: grid; place-items: center; padding: 20px; }
.modal { width: min(640px, 100%); position: relative; }
.modal h2 { font-size: 44px; margin: 12px 0; letter-spacing: -.05em; }
.modal-close { position: absolute; top: 14px; right: 16px; width: 38px; height: 38px; border-radius: 999px; border: 1px solid var(--border); background: rgba(255,255,255,.08); color: var(--text); font-size: 26px; cursor: pointer; }
.center { justify-content: center; }
.definitionPrompt { font-size: 26px; line-height: 1.35; max-width: 760px; }
.stat h2 { margin: 0; font-size: 48px; letter-spacing: -.06em; }
code { color: var(--accent); }
@media (max-width: 780px) {
  .section-row { align-items: flex-start; }
  .modal h2 { font-size: 34px; }
  .definitionPrompt { font-size: 21px; }
}

/* Layered learning upgrade */
.layered-topic .layer-control { margin: 18px 0 22px; display: grid; gap: 16px; }
.mode-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.mode-btn { border: 1px solid var(--border); color: var(--text); background: rgba(255,255,255,.055); border-radius: 16px; padding: 12px 14px; cursor: pointer; font-weight: 800; }
.mode-btn.active { color: #061018; background: linear-gradient(135deg, var(--accent), var(--accent2)); border-color: transparent; }
.progress-track { height: 10px; border-radius: 999px; overflow: hidden; background: rgba(255,255,255,.08); border: 1px solid var(--border); }
.progress-fill { height: 100%; border-radius: 999px; background: linear-gradient(135deg, var(--accent), var(--accent2)); transition: width .2s ease; }
.layer-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.focus-card { border-color: rgba(110,231,249,.22); }
.big-line { font-size: 22px; line-height: 1.45; font-weight: 800; color: var(--text) !important; }
.textarea { width: 100%; min-height: 120px; padding: 15px 16px; border: 1px solid var(--border); border-radius: 18px; background: rgba(255,255,255,.06); color: var(--text); outline: none; resize: vertical; margin-bottom: 12px; }
.textarea:focus { border-color: var(--accent); }
@media (max-width: 780px) { .mode-tabs { grid-template-columns: 1fr 1fr; } .big-line { font-size: 19px; } }

/* Spanish ASAP language learning system */
.spanish-cta { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--border); }
.spanish-hero .hero-grid { align-items: stretch; }
.spanish-card .big-phrase { font-size: 24px; font-weight: 900; color: var(--accent); margin: 12px 0 6px; }
.spanish-focus { background: radial-gradient(circle at top left, rgba(110,231,249,.16), rgba(255,255,255,.055)); }
.mega-phrase { font-size: clamp(42px, 8vw, 86px); line-height: .95; letter-spacing: -.07em; margin: 10px 0 16px; }
.pronunciation { padding: 12px 14px; border-radius: 16px; border: 1px solid rgba(110,231,249,.22); background: rgba(110,231,249,.08); }
.breakdown-list { display: grid; gap: 10px; }
.conversation-box { display: grid; gap: 12px; }
.chat-line { padding: 14px; border-radius: 18px; background: rgba(255,255,255,.055); border: 1px solid var(--border); display: grid; gap: 5px; }
.chat-line span { font-size: 20px; font-weight: 900; color: var(--text); }
.chat-line em { color: var(--muted); font-style: normal; }
.spanish-lesson .mode-btn.active { background: linear-gradient(135deg, #facc15, var(--accent)); color: #061018; }
@media (max-width: 780px) {
  .mega-phrase { font-size: 42px; }
  .chat-line span { font-size: 18px; }
}