/* ====== Lernspiel – Stylesheet (kindgerecht, bunt, altersgerecht 7-17) ====== */
:root {
  --bg1: #6dd5fa;
  --bg2: #2980b9;
  --primary: #4a90d9;
  --primary-dark: #357abd;
  --accent: #f39c12;
  --success: #27ae60;
  --danger: #e74c3c;
  --purple: #9b59b6;
  --card: #ffffff;
  --text: #2c3e50;
  --muted: #7f8c8d;
  --shadow: 0 10px 30px rgba(0,0,0,.18);
  --radius: 18px;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body {
  height: 100%;
  font-family: "Comic Sans MS", "Baloo 2", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  overflow: hidden;
}
body {
  background: linear-gradient(135deg, var(--bg1), var(--bg2));
  background-attachment: fixed;
}
#app { height: 100vh; width: 100vw; position: relative; overflow: hidden; }

/* ====== Screens ====== */
.screen {
  position: absolute; inset: 0;
  display: none; flex-direction: column;
  overflow-y: auto; padding: 16px;
  animation: fadeIn .3s ease;
}
.screen.active { display: flex; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px);} to {opacity:1; transform:none;} }

/* ====== Auth ====== */
#auth-screen { align-items: center; justify-content: center; }
.auth-card {
  background: var(--card); border-radius: var(--radius);
  padding: 32px 28px; width: min(420px, 92vw);
  box-shadow: var(--shadow); text-align: center;
}
.logo { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 2.4rem; }
.logo h1 { font-size: 1.8rem; background: linear-gradient(90deg,var(--primary),var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.subtitle { color: var(--muted); margin: 6px 0 18px; }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; background: #eef; border-radius: 12px; padding: 4px; }
.tab { flex: 1; border: none; background: transparent; padding: 10px; border-radius: 10px;
  font-weight: 700; cursor: pointer; color: var(--muted); transition: .2s; font-size: 1rem; }
.tab.active { background: var(--card); color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-form input, .auth-form select {
  padding: 13px 14px; border: 2px solid #e0e6ed; border-radius: 12px;
  font-size: 1rem; font-family: inherit; transition: .2s;
}
.auth-form input:focus { outline: none; border-color: var(--primary); }
.age-label { display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--muted); }
.age-label input { width: 70px; text-align: center; }

/* ====== Buttons ====== */
.btn {
  border: none; padding: 13px 22px; border-radius: 12px; font-size: 1rem;
  font-weight: 700; cursor: pointer; font-family: inherit; transition: transform .1s, box-shadow .2s;
  background: #ecf0f1; color: var(--text);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,.15); }
.btn:active { transform: translateY(0); }
.btn.primary { background: linear-gradient(135deg,var(--primary),var(--primary-dark)); color: #fff; }
.btn.ghost { background: rgba(255,255,255,.85); }
.btn.small { padding: 8px 14px; font-size: .9rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ====== Topbar ====== */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.topbar-title { font-size: 1.3rem; }
.user-badge { background: rgba(255,255,255,.9); padding: 8px 16px; border-radius: 20px; font-weight: 700; }
.nav-btns { display: flex; gap: 8px; }
.hint { text-align: center; color: rgba(255,255,255,.95); margin-top: 20px; font-size: .95rem; }
.hint a { color: #fff; text-decoration: underline; }

/* ====== Mode Grid ====== */
.screen-title { text-align: center; color: #fff; margin: 8px 0 18px; font-size: 1.6rem; text-shadow: 0 2px 6px rgba(0,0,0,.25); }
.mode-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; max-width: 1000px; margin: 0 auto; width: 100%; }
.mode-card {
  background: var(--card); border-radius: var(--radius); padding: 22px; cursor: pointer;
  box-shadow: var(--shadow); transition: transform .15s; position: relative; overflow: hidden;
  border-top: 6px solid var(--primary);
}
.mode-card:hover { transform: translateY(-6px) scale(1.02); }
.mode-card .icon { font-size: 2.6rem; }
.mode-card h3 { margin: 8px 0 4px; font-size: 1.2rem; }
.mode-card p { color: var(--muted); font-size: .9rem; }
.mode-card .pill { position: absolute; top: 12px; right: 12px; background: #eef; color: var(--primary);
  padding: 4px 10px; border-radius: 12px; font-size: .8rem; font-weight: 700; }

/* ====== Game Screen ====== */
.game-topbar { background: rgba(0,0,0,.2); border-radius: 14px; padding: 8px 12px; }
.hud { display: flex; gap: 16px; align-items: center; }
.hud-item { background: rgba(255,255,255,.95); padding: 6px 14px; border-radius: 14px; font-weight: 700; }
.hud-timer { background: var(--accent); color: #fff; padding: 6px 14px; border-radius: 14px; font-weight: 800; font-size: 1.1rem; min-width: 70px; text-align: center; }
.hud-timer.warn { background: var(--danger); animation: pulse .5s infinite; }
@keyframes pulse { 0%,100%{transform:scale(1);} 50%{transform:scale(1.1);} }
#game-canvas-wrap { flex: 1; display: flex; align-items: center; justify-content: center; position: relative; min-height: 300px; }
#game-canvas-wrap canvas { border-radius: 16px; box-shadow: var(--shadow); max-width: 100%; }
#answer-area { position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%); width: min(560px, 94vw); }
.answer-area { display: flex; flex-direction: column; gap: 10px; }
.answer-input-wrap { display: flex; gap: 8px; }
.answer-input {
  flex: 1; padding: 16px; font-size: 1.4rem; border-radius: 14px; border: 3px solid #fff;
  text-align: center; font-family: inherit; background: rgba(255,255,255,.95);
}
.answer-input:focus { outline: none; border-color: var(--accent); }
.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.choice-btn {
  padding: 18px; font-size: 1.3rem; border-radius: 14px; border: none; cursor: pointer;
  background: rgba(255,255,255,.95); font-family: inherit; font-weight: 700; transition: transform .1s;
}
.choice-btn:hover { transform: scale(1.04); }
.choice-btn.correct { background: var(--success); color: #fff; }
.choice-btn.wrong { background: var(--danger); color: #fff; }
.feedback { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); font-size: 4rem; pointer-events: none; z-index: 5; }

/* ====== Result Screen ====== */
#result-screen { align-items: center; justify-content: center; }
.result-card { background: var(--card); border-radius: var(--radius); padding: 32px; width: min(640px,94vw); box-shadow: var(--shadow); text-align: center; }
.result-card h2 { font-size: 1.8rem; }
.result-score { font-size: 4rem; font-weight: 900; color: var(--accent); margin: 8px 0; }
.result-quote { color: var(--muted); font-size: 1.1rem; margin-bottom: 16px; }
.result-badges { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.badge { background: #eef; padding: 8px 16px; border-radius: 16px; font-weight: 700; font-size: .9rem; }
.result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.result-details { text-align: left; }
.result-details summary { cursor: pointer; font-weight: 700; padding: 8px; }
table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: .9rem; }
th, td { padding: 8px; border-bottom: 1px solid #eee; text-align: left; }
th { background: #f8f8f8; }

/* ====== Stats ====== */
.stats-body { max-width: 900px; margin: 0 auto; width: 100%; }
.stats-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card { background: var(--card); border-radius: var(--radius); padding: 18px; text-align: center; box-shadow: var(--shadow); }
.stat-card .num { font-size: 2.2rem; font-weight: 900; color: var(--primary); }
.stat-card .lbl { color: var(--muted); font-size: .9rem; }
.session-row { background: var(--card); border-radius: 12px; padding: 14px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.session-row .left { font-weight: 700; }
.session-row .right { display: flex; gap: 10px; align-items: center; }

/* ====== Admin ====== */
.admin-body { max-width: 1000px; margin: 0 auto; width: 100%; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.panel { background: var(--card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
.panel h3 { margin-bottom: 8px; }
.muted { color: var(--muted); font-size: .9rem; margin-bottom: 12px; }
form input, form select { width: 100%; padding: 11px; border: 2px solid #e0e6ed; border-radius: 10px; font-size: 1rem; font-family: inherit; margin-bottom: 8px; }
form input:focus, form select:focus { outline: none; border-color: var(--primary); }
.form-row { display: flex; gap: 8px; }
.form-row label { flex: 1; font-size: .85rem; color: var(--muted); }
.search-row { display: flex; gap: 8px; margin-bottom: 10px; }
.search-row input, .search-row select { margin-bottom: 0; }

/* ====== States ====== */
.hidden { display: none !important; }
.error { color: var(--danger); background: #fdeaea; padding: 10px; border-radius: 10px; margin-top: 8px; font-size: .9rem; }
.msg { padding: 8px; border-radius: 8px; margin-top: 8px; background: #e8f8f0; color: var(--success); }
.msg.err { background: #fdeaea; color: var(--danger); }

/* ====== Role Switch (Register) ====== */
.role-switch { display: flex; gap: 8px; background: #eef; border-radius: 12px; padding: 8px; }
.role-switch label { flex: 1; text-align: center; padding: 8px; border-radius: 10px; cursor: pointer; font-weight: 700; transition: .2s; }
.role-switch input { display: none; }
.role-switch input:checked + span, .role-switch label:has(input:checked) { background: var(--card); color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,.1); }

/* ====== Schüler: Klassen-Info Banner ====== */
.class-info { background: rgba(39,174,96,.95); color: #fff; border-radius: 12px; padding: 10px 16px; margin: 0 auto 12px; max-width: 900px; text-align: center; font-weight: 700; }

/* ====== Lehrer-Screens ====== */
.teacher-body { max-width: 1000px; margin: 0 auto; width: 100%; }
.teacher-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.code-card { background: linear-gradient(135deg,var(--primary),var(--purple)); color: #fff; border-radius: var(--radius); padding: 20px; margin-bottom: 16px; text-align: center; box-shadow: var(--shadow); }
.code-card .code-label { font-size: .9rem; opacity: .9; }
.code-card .code-big { font-size: 2.6rem; font-weight: 900; letter-spacing: 6px; margin: 6px 0; font-family: monospace; }
.center-card { display: flex; justify-content: center; align-items: flex-start; padding-top: 40px; }
.join-card { max-width: 420px; width: 100%; }
.table-wrap { overflow-x: auto; }
.class-row { background: var(--card); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 8px rgba(0,0,0,.06); cursor: pointer; transition: transform .1s; }
.class-row:hover { transform: translateX(4px); }
.class-row .class-name { font-weight: 700; }
.class-row .class-meta { color: var(--muted); font-size: .85rem; }
.class-code-badge { background: var(--accent); color: #fff; padding: 4px 10px; border-radius: 8px; font-family: monospace; font-weight: 700; }
.bar { height: 8px; border-radius: 4px; background: #eee; overflow: hidden; margin-top: 4px; }
.bar > div { height: 100%; background: linear-gradient(90deg,var(--success),#2ecc71); }

/* ====== Lizenz-/Werbung-Panel ====== */
.promo-card { background: linear-gradient(135deg,#fff8e1,#ffe0b2); border: 2px solid #f39c12; }
.promo-card h3 { color: #e67e22; }
.promo-card ul { list-style: none; margin: 8px 0; padding: 0; }
.promo-card ul li { padding: 4px 0; }
.promo-prices { display: flex; gap: 16px; margin: 12px 0; }
.promo-prices > div { background: rgba(255,255,255,.6); padding: 10px 16px; border-radius: 10px; }
.promo-prices b { font-size: 1.4rem; color: #e67e22; }
.promo-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.license-active { background: linear-gradient(135deg,#e8f8f0,#d4f4e0); border: 2px solid var(--success); }
.license-active code { background: #fff; padding: 2px 8px; border-radius: 6px; font-family: monospace; }

/* ====== Toast ====== */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; padding: 14px 24px; border-radius: 14px;
  font-weight: 700; z-index: 1000; box-shadow: var(--shadow); animation: slideUp .3s;
}
@keyframes slideUp { from { transform: translate(-50%, 30px); opacity: 0;} to { transform: translate(-50%,0); opacity:1;} }

/* ====== Responsive ====== */
@media (max-width: 640px) {
  .admin-grid { grid-template-columns: 1fr; }
  .hud { gap: 8px; }
  .hud-item, .hud-timer { font-size: .85rem; padding: 5px 10px; }
  .result-score { font-size: 3rem; }
}