/* CLAUDE FOR BEGINNERS — Shared Design System */
/* Used by all 9 lessons + index page */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#08080a;
  --surface:#111114;
  --surface2:#18181c;
  --text:#e8e8ec;
  --dim:#8888a0;
  --muted:#8a8aaa;
  --orange:#fb923c;
  --blue:#38bdf8;
  --green:#4ade80;
  --red:#f87171;
  --purple:#c084fc;
  --border:#1e1e28;
  --border2:#2a2a38;
  --glow-orange: rgba(251,146,60,.08);
  --glow-purple: rgba(192,132,252,.06);
}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:'';position:fixed;top:-50%;left:-50%;width:200%;height:200%;
  background:radial-gradient(ellipse at 30% 20%,rgba(251,146,60,.04) 0%,transparent 50%),
              radial-gradient(ellipse at 70% 80%,rgba(192,132,252,.03) 0%,transparent 50%);
  pointer-events:none;z-index:-1;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

/* ---- CONTAINER ---- */
.wrap{max-width:800px;margin:0 auto;padding:0 2rem}

/* ---- LOCAL NAV ---- */
.local-nav{
  display:flex;justify-content:space-between;align-items:center;
  padding:1rem 0;border-bottom:1px solid var(--border);
}
.local-nav a{color:var(--dim);font-size:.875rem;font-weight:500;text-decoration:none}
.local-nav a:hover{color:var(--text)}
.local-nav .lesson-badge{
  font-size:.75rem;font-weight:600;color:var(--orange);
  background:var(--glow-orange);padding:.25rem .75rem;border-radius:20px;
  border:1px solid rgba(251,146,60,.2);
}

/* ---- LESSON HERO ---- */
.lesson-hero{padding:3rem 0 2rem;text-align:center}
.lesson-hero h1{font-size:clamp(1.8rem,5vw,2.5rem);font-weight:800;letter-spacing:-1px;margin-bottom:.5rem}
.lesson-hero h1 .accent{color:var(--orange)}
.lesson-hero .sub{color:var(--dim);font-size:1.05rem;max-width:520px;margin:0 auto}

/* ---- LEARNING GOALS ---- */
.learn-card{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  padding:1.5rem 1.75rem;margin:2rem 0;
}
.learn-card h3{
  font-size:.7rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;
  color:var(--orange);margin-bottom:.75rem;
}
.learn-card ul{list-style:none;display:flex;flex-direction:column;gap:.5rem}
.learn-card li{
  font-size:.9rem;color:var(--dim);display:flex;align-items:flex-start;gap:.5rem;
}
.learn-card li::before{content:'✓';flex-shrink:0;color:var(--green);font-weight:700}

/* ---- SECTION ---- */
.lesson-section{padding:2rem 0}
.section-label{
  font-size:.7rem;font-weight:600;letter-spacing:2px;text-transform:uppercase;
  color:var(--purple);margin-bottom:.75rem;display:inline-block;
  border:1px solid rgba(192,132,252,.2);padding:3px 10px;border-radius:4px;
}
.section-title{font-size:1.35rem;font-weight:800;letter-spacing:-0.5px;margin-bottom:.75rem}
.section-text{color:var(--dim);font-size:.95rem;line-height:1.8;margin-bottom:1rem}
.section-text strong{color:var(--text);font-weight:600}

/* ---- INTERACTIVE AREA ---- */
.demo-container{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  padding:1.5rem;margin:1.5rem 0;overflow:hidden;
}

/* ---- CHAT DEMO ---- */
.chat-window{
  background:var(--bg);border:1px solid var(--border);border-radius:12px;
  padding:1rem;max-height:400px;overflow-y:auto;margin-bottom:1rem;
}
.chat-msg{margin-bottom:1rem;display:flex;gap:.75rem;align-items:flex-start}
.chat-msg:last-child{margin-bottom:0}
.chat-avatar{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.9rem;flex-shrink:0}
.chat-avatar.user{background:rgba(251,146,60,.15)}
.chat-avatar.claude{background:rgba(192,132,252,.15)}
.chat-bubble{font-size:.9rem;line-height:1.7;color:var(--dim);flex:1}
.chat-bubble strong{color:var(--text)}
.chat-input-area{display:flex;gap:8px}
.chat-input{
  flex:1;background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:.65rem 1rem;color:var(--text);font-size:.9rem;font-family:inherit;outline:none;
}
.chat-input:focus{border-color:var(--purple)}
.chat-input::placeholder{color:var(--muted)}
.chat-send{
  background:var(--orange);color:#000;border:none;border-radius:10px;
  padding:.65rem 1.25rem;font-weight:700;font-size:.85rem;cursor:pointer;
  font-family:inherit;transition:all .2s;
}
.chat-send:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(251,146,60,.25)}

/* ---- PROMPT TEMPLATES ---- */
.prompt-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin:1rem 0}
.prompt-card{
  background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:1rem;cursor:pointer;transition:all .2s;
}
.prompt-card:hover{border-color:var(--orange);transform:translateY(-2px)}
.prompt-card .emoji{font-size:1.25rem;margin-bottom:.5rem}
.prompt-card h4{font-size:.85rem;font-weight:700;margin-bottom:.25rem}
.prompt-card p{color:var(--dim);font-size:.75rem;line-height:1.5}

/* ---- BUTTONS ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.65rem 1.5rem;border-radius:10px;font-weight:700;font-size:.85rem;
  cursor:pointer;font-family:inherit;transition:all .2s;border:none;
}
.btn-primary{background:var(--orange);color:#000}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(251,146,60,.25)}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
.btn-green{background:var(--green);color:#000}
.btn:disabled{opacity:.3;cursor:not-allowed;transform:none;box-shadow:none}

/* ---- QUIZ ---- */
.quiz-progress{display:flex;gap:6px;justify-content:center;margin:1.5rem 0}
.quiz-dot{width:40px;height:5px;border-radius:3px;background:var(--border2);transition:background .3s}
.quiz-dot.active{background:var(--orange)}
.quiz-dot.correct{background:var(--green)}
.quiz-dot.wrong{background:var(--red)}
.quiz-question{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:2rem;text-align:center}
.quiz-question h2{font-size:1.2rem;font-weight:700;margin-bottom:1.5rem}
.quiz-options{display:flex;flex-direction:column;gap:10px;max-width:500px;margin:0 auto}
.quiz-option{
  padding:.85rem 1.25rem;background:var(--surface2);border:2px solid var(--border);
  border-radius:12px;cursor:pointer;font-size:.9rem;text-align:left;
  transition:all .2s;font-family:inherit;color:var(--text);
}
.quiz-option:hover{border-color:var(--orange);transform:translateY(-1px)}
.quiz-option.correct{border-color:var(--green);background:rgba(74,222,128,.08)}
.quiz-option.wrong{border-color:var(--red);background:rgba(248,113,113,.06)}
.quiz-feedback{margin-top:1.25rem;padding:1rem;border-radius:10px;font-size:.9rem;line-height:1.6;display:none}
.quiz-feedback.visible{display:block}
.quiz-feedback.correct{background:rgba(74,222,128,.08);color:var(--green);border:1px solid rgba(74,222,128,.2)}
.quiz-feedback.wrong{background:rgba(248,113,113,.06);color:var(--red);border:1px solid rgba(248,113,113,.2)}

/* ---- RESULTS ---- */
.results-card{
  background:var(--surface);border:1px solid var(--border);border-radius:20px;
  padding:3rem 2rem;text-align:center;max-width:400px;margin:2rem auto;
}
.results-card h2{font-size:1.5rem;font-weight:800;margin-bottom:.5rem}
.results-card p{color:var(--dim);font-size:.9rem}

/* ---- COMPLETION ---- */
.complete-btn{
  display:none;margin:2rem auto;padding:.85rem 2.5rem;
  background:var(--green);color:#000;font-weight:700;font-size:1rem;
  border:none;border-radius:12px;cursor:pointer;font-family:inherit;transition:all .2s;
}
.complete-btn.visible{display:block}
.complete-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(74,222,128,.25)}

/* ---- CALLOUT ---- */
.callout{
  background:var(--surface);border-left:3px solid var(--orange);
  border-radius:0 12px 12px 0;padding:1.25rem 1.5rem;margin:1.5rem 0;
}
.callout p{color:var(--dim);font-size:.9rem;line-height:1.7}
.callout strong{color:var(--text)}
.callout.purple{border-left-color:var(--purple)}

/* ---- TIP BOX ---- */
.tip-box{
  background:rgba(192,132,252,.06);border:1px solid rgba(192,132,252,.15);
  border-radius:12px;padding:1.25rem 1.5rem;margin:1.5rem 0;
}
.tip-box .tip-label{font-size:.7rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--purple);margin-bottom:.5rem}
.tip-box p{color:var(--dim);font-size:.9rem;line-height:1.7}

/* ---- FOOTER ---- */
.lesson-footer{
  text-align:center;padding:2rem 0;border-top:1px solid var(--border);
  margin-top:3rem;color:var(--muted);font-size:.8rem;
}

/* ---- PRICE TAG ---- */
.price-tag{
  display:inline-block;font-size:.6rem;font-weight:700;letter-spacing:1px;
  text-transform:uppercase;padding:3px 10px;border-radius:4px;
  background:rgba(251,146,60,.12);color:var(--orange);
  border:1px solid rgba(251,146,60,.25);
}
body.lo-pro .price-tag{display:none!important}

/* ---- RESPONSIVE ---- */
@media(max-width:600px){
  .wrap{padding:0 1.25rem}
  .lesson-hero h1{font-size:1.75rem}
  .demo-container{padding:1rem}
  .chat-window{max-height:300px}
  .prompt-grid{grid-template-columns:1fr}
  .quiz-question{padding:1.5rem 1.25rem}
  .results-card{padding:2rem 1.5rem}
}