@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Nunito:wght@400;600;700;800&display=swap');

/* ════════════════════════════════════════════════════════
   LearnyPlay — Linea del Tempo  |  timeline.css  v1.1.0
   Restyled: sfondo blu scuro con stelle (allineato a tabelline)
   ════════════════════════════════════════════════════════ */

.tl-wrapper {
    --tl-bg:       #0f1535;
    --tl-surface:  #1a2555;
    --tl-card:     #212e6a;
    --tl-border:   rgba(255,255,255,.09);
    --tl-accent:   #FFD93D;
    --tl-accent2:  #FF6B6B;
    --tl-accent3:  #4ECDC4;
    --tl-accent4:  #818cf8;
    --tl-text:     #F0F4FF;
    --tl-muted:    #a8b4d8;
    --tl-font-h:   'Fredoka One', 'Nunito', cursive;
    --tl-font-b:   'Nunito', sans-serif;
    --tl-r:        18px;
    --tl-shadow:   0 8px 32px rgba(0,0,0,.45);
    font-family: var(--tl-font-b); color: var(--tl-text);
    background: var(--tl-bg); min-height: 520px;
    max-width: 680px; margin: 0 auto;
    position: relative; overflow: hidden;
    border-radius: 24px; box-shadow: var(--tl-shadow);
}

.tl-wrapper * { box-sizing: border-box; }
.tl-wrapper p, .tl-wrapper h1, .tl-wrapper h2, .tl-wrapper h3, .tl-wrapper span, .tl-wrapper div, .tl-wrapper button { color: inherit; }

.tl-screen        { display:none; padding:24px 20px 40px; animation:tlFadeUp .35s ease both; position:relative; }
.tl-screen.active { display:block; }
.tl-hidden        { display:none !important; }

/* Stars BG */
.tl-stars-bg { position:absolute; inset:0; pointer-events:none; z-index:0; overflow:hidden; }
.tl-stars-bg::before {
    content:''; position:absolute; width:2px; height:2px; border-radius:50%; background:white;
    box-shadow: 40px 30px 0 white,120px 80px 0 white,220px 40px 0 white,320px 120px 0 white,
        80px 180px 0 white,400px 60px 0 white,500px 150px 0 white,60px 260px 0 white,
        180px 300px 0 white,280px 240px 0 white,450px 280px 0 white,350px 340px 0 white,
        150px 380px 0 white,520px 380px 0 white,240px 440px 0 white,
        90px 460px 0 rgba(255,255,255,.6),460px 420px 0 rgba(255,255,255,.6),
        560px 60px 0 rgba(255,255,255,.5),30px 140px 0 rgba(255,255,255,.5),
        600px 300px 0 rgba(255,255,255,.4);
    opacity:.45;
}
.tl-home-content { position:relative; z-index:1; }

/* Logo */
.tl-logo { display:flex; align-items:center; gap:16px; justify-content:center; margin-bottom:6px; }
.tl-logo-icon { font-size:52px; animation:tlBounce 2.2s infinite ease-in-out; }
@keyframes tlBounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
.tl-title {
    font-family:var(--tl-font-h); font-size:34px; line-height:1.1; margin:0;
    background:linear-gradient(135deg,#fff 0%,#c8d0ff 100%);
    -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.tl-title span {
    background:linear-gradient(135deg,var(--tl-accent),#fbbf24);
    -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.tl-subtitle { text-align:center; color:var(--tl-muted); font-weight:600; margin:0 0 24px; }

/* Level grid */
.tl-levels-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); gap:12px; margin-bottom:20px; }
.tl-level-card {
    background:var(--tl-card); border:2px solid transparent;
    border-radius:var(--tl-r); padding:16px 14px;
    cursor:pointer; position:relative; overflow:hidden;
    transition:transform .18s,border-color .18s,background .18s; text-align:center;
}
.tl-level-card:hover:not(.tl-locked) { transform:scale(1.05); border-color:var(--tl-accent); background:#2a3880; }
.tl-level-card.tl-locked { opacity:.4; cursor:not-allowed; }
.tl-level-card.tl-locked::after {
    content:'🔒'; position:absolute; inset:0;
    display:flex; align-items:center; justify-content:center;
    font-size:26px; background:rgba(15,21,53,.6); backdrop-filter:blur(2px);
}
.tl-level-card:nth-child(1){border-top:3px solid #FF6B9D}
.tl-level-card:nth-child(2){border-top:3px solid #FF6B35}
.tl-level-card:nth-child(3){border-top:3px solid #FFD93D}
.tl-level-card:nth-child(4){border-top:3px solid #4ECDC4}
.tl-level-card:nth-child(5){border-top:3px solid #9B59B6}
.tl-level-icon  { font-size:28px; margin-bottom:6px; }
.tl-level-name  { font-family:var(--tl-font-h); font-size:14px; margin-bottom:3px; color:var(--tl-text); }
.tl-level-sub   { font-size:11px; color:var(--tl-muted); margin-bottom:8px; }
.tl-level-medal-row { font-size:16px; min-height:20px; }
.tl-level-progress-wrap { margin-top:8px; }
.tl-level-progress-bar  { height:5px; background:rgba(255,255,255,.1); border-radius:5px; overflow:hidden; }
.tl-level-progress-fill { height:100%; border-radius:5px; background:linear-gradient(90deg,var(--tl-accent),#fbbf24); transition:width .6s cubic-bezier(.4,0,.2,1); }
.tl-level-sub-count { font-size:10px; color:var(--tl-muted); margin-top:4px; }

.tl-score-bar {
    display:flex; align-items:center; justify-content:space-between; gap:14px;
    font-size:15px; font-weight:700;
    background:rgba(255,255,255,.06); border-radius:12px; padding:10px 16px;
}
.tl-btn-small { background:rgba(255,255,255,.1); border:none; color:var(--tl-text); font-family:var(--tl-font-b); font-size:13px; font-weight:700; padding:5px 12px; border-radius:20px; cursor:pointer; transition:background .2s; }
.tl-btn-small:hover { background:rgba(255,255,255,.2); }

.tl-back-btn { background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.15); color:var(--tl-text); font-family:var(--tl-font-b); font-weight:700; font-size:14px; padding:7px 14px; border-radius:30px; cursor:pointer; margin-bottom:18px; display:inline-block; transition:background .2s; }
.tl-back-btn:hover { background:rgba(255,255,255,.2); }

/* Sublevels */
.tl-level-header { display:flex; align-items:center; gap:12px; margin-bottom:18px; background:var(--tl-card); border:1px solid var(--tl-border); border-radius:var(--tl-r); padding:14px 16px; }
.tl-level-hicon  { font-size:32px; flex-shrink:0; }
.tl-level-htitle { font-family:var(--tl-font-h); font-size:18px; margin:0 0 2px; color:var(--tl-text); }
.tl-level-hsub   { font-size:12px; color:var(--tl-muted); margin:0; }
.tl-sublevels-list { display:flex; flex-direction:column; gap:8px; }
.tl-sublevel-row { background:var(--tl-card); border:2px solid transparent; border-radius:var(--tl-r); padding:12px 14px; display:flex; flex-direction:column; gap:10px; transition:border-color .15s,background .15s; }
.tl-sublevel-row:hover:not(.tl-locked) { border-color:rgba(255,255,255,.2); background:#2a3880; }
.tl-sublevel-row.tl-locked { opacity:.4; cursor:not-allowed; }
.tl-sublevel-row.tl-completed { border-color:rgba(78,205,196,.3); }
.tl-sub-row-top { display:flex; align-items:center; gap:10px; }
.tl-sub-icon    { font-size:22px; flex-shrink:0; }
.tl-sub-texts   { flex:1; min-width:0; }
.tl-sub-title   { font-family:var(--tl-font-h); font-size:15px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; color:var(--tl-text); }
.tl-sub-desc    { font-size:11px; color:var(--tl-muted) !important; margin-top:2px; }
.tl-sub-stats   { display:flex; align-items:center; gap:6px; flex-shrink:0; }
.tl-sub-medal   { font-size:18px; }
.tl-sub-pct     { font-size:11px; font-weight:700; color:var(--tl-accent3); }
.tl-sub-row-btns { display:flex; gap:8px; }
.tl-unlock-note { margin-top:14px; padding:11px 15px; background:rgba(255,211,61,.07); border:1px solid rgba(255,211,61,.2); border-radius:10px; font-size:12px; color:var(--tl-muted); display:none; }
.tl-unlock-note.tl-visible { display:block; }
.tl-unlock-note strong { color:var(--tl-accent); }

/* Game */
.tl-game-content { display:flex; flex-direction:column; gap:14px; }
.tl-game-header  { display:flex; align-items:center; gap:10px; background:rgba(255,255,255,.06); border:1px solid var(--tl-border); border-radius:var(--tl-r); padding:10px 14px; }
.tl-game-info    { flex:1; }
.tl-game-progress { font-size:11px; color:var(--tl-muted); display:block; }
.tl-game-title   { font-family:var(--tl-font-h); font-size:14px; color:var(--tl-text); }
.tl-lives-row    { display:flex; gap:3px; flex-shrink:0; }
.tl-heart        { font-size:18px; transition:filter .2s,opacity .2s; }
.tl-heart.tl-lost { filter:grayscale(1); opacity:.25; }
.tl-score-pill   { background:rgba(255,211,61,.1); border:1px solid rgba(255,211,61,.25); color:var(--tl-accent); font-family:var(--tl-font-h); font-size:14px; padding:4px 12px; border-radius:16px; flex-shrink:0; }

.tl-question-box  { background:var(--tl-card); border:1px solid var(--tl-border); border-radius:22px; padding:22px 18px 18px; text-align:center; }
.tl-question-text { font-family:var(--tl-font-h); font-size:20px; color:var(--tl-accent); margin:0; line-height:1.3; }

/* Timeline drag */
.tl-timeline-section { background:var(--tl-card); border:1px solid var(--tl-border); border-radius:var(--tl-r); padding:18px 14px; }
.tl-timeline-axis-label { display:flex; justify-content:space-between; font-size:11px; color:var(--tl-muted); margin-bottom:12px; }
.tl-timeline-rail  { position:relative; }
.tl-timeline-line  { position:absolute; top:50%; left:0; right:0; height:3px; background:linear-gradient(90deg,var(--tl-accent4),#a78bfa); transform:translateY(-50%); border-radius:3px; z-index:0; }
.tl-timeline-slots { display:flex; align-items:flex-start; justify-content:space-around; position:relative; z-index:1; gap:6px; }
.tl-tl-slot  { display:flex; flex-direction:column; align-items:center; gap:5px; flex:1; }
.tl-tl-drop  { width:100%; min-height:54px; background:rgba(255,255,255,.04); border:2px dashed rgba(255,255,255,.18); border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:11px; color:var(--tl-muted); cursor:pointer; transition:border-color .2s,background .2s; }
.tl-tl-drop.tl-drag-over { border-color:var(--tl-accent); background:rgba(255,211,61,.1); }
.tl-tl-drop.tl-filled  { border-color:rgba(78,205,196,.4); background:rgba(78,205,196,.07); cursor:default; }
.tl-tl-drop.tl-correct { border-color:var(--tl-accent3); background:rgba(78,205,196,.16); animation:tlPop .3s ease; }
.tl-tl-drop.tl-wrong   { border-color:var(--tl-accent2); background:rgba(255,107,107,.16); animation:tlShake .3s ease; }
.tl-tl-drop-text  { font-size:10px; font-weight:700; padding:6px 4px; text-align:center; line-height:1.25; color:var(--tl-text); }
.tl-tl-slot-label { font-size:9px; color:var(--tl-muted); text-align:center; }

.tl-cards-pool-wrap  { background:var(--tl-card); border:1px solid var(--tl-border); border-radius:var(--tl-r); padding:14px; }
.tl-cards-pool-label { font-size:12px; color:var(--tl-muted); text-align:center; margin:0 0 10px; }
.tl-cards-pool       { display:flex; flex-wrap:wrap; gap:8px; justify-content:center; }
.tl-drag-card { background:var(--tl-card); border:2px solid rgba(129,140,248,.35); color:var(--tl-text); font-family:var(--tl-font-b); font-size:12px; font-weight:700; padding:8px 14px; border-radius:var(--tl-r); cursor:grab; user-select:none; touch-action:none; transition:transform .18s,border-color .18s,background .18s; }
.tl-drag-card:hover     { transform:scale(1.08); border-color:var(--tl-accent); background:#2a3880; }
.tl-drag-card.tl-dragging { opacity:.4; transform:scale(.95); cursor:grabbing; }
.tl-drag-card.tl-used    { opacity:.15; pointer-events:none; }

/* Click grid */
.tl-click-hint { text-align:center; font-size:12px; color:var(--tl-muted); padding:6px 0; font-style:italic; }
.tl-selected-sequence { display:flex; flex-wrap:wrap; gap:6px; justify-content:center; min-height:32px; padding:4px 0; }
.tl-seq-chip { background:rgba(129,140,248,.2); border:1px solid rgba(129,140,248,.4); color:var(--tl-accent4); font-size:11px; font-weight:700; padding:4px 10px; border-radius:14px; animation:tlFadeUp .2s ease both; }
.tl-click-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(110px,1fr)); gap:10px; }
.tl-click-item { background:var(--tl-card); border:2px solid rgba(255,255,255,.1); border-radius:var(--tl-r); padding:14px 10px; text-align:center; cursor:pointer; position:relative; transition:border-color .18s,background .18s,transform .18s; }
.tl-click-item:hover:not(.tl-correct):not(.tl-wrong) { transform:scale(1.08); border-color:var(--tl-accent); background:#2a3880; }
.tl-click-item.tl-correct { border-color:var(--tl-accent3); background:rgba(78,205,196,.16); animation:tlPop .3s ease; }
.tl-click-item.tl-wrong   { border-color:var(--tl-accent2); background:rgba(255,107,107,.16); animation:tlShake .3s ease; }
.tl-click-icon  { font-size:28px; margin-bottom:6px; }
.tl-click-label { font-size:12px; font-weight:700; line-height:1.2; }
.tl-click-order-badge { position:absolute; top:-8px; left:-8px; width:22px; height:22px; border-radius:50%; background:var(--tl-accent4); color:#fff; font-size:11px; font-weight:800; display:flex; align-items:center; justify-content:center; }

/* Feedback */
.tl-feedback-bar { display:flex; align-items:center; gap:10px; border-radius:var(--tl-r); padding:13px 16px; font-family:var(--tl-font-h); font-size:14px; font-weight:700; }
.tl-feedback-bar.tl-fb-correct { background:#1a3d2e; border:2px solid #22c55e; color:#86efac; }
.tl-feedback-bar.tl-fb-wrong   { background:#3d1a1a; border:2px solid #ef4444; color:#fca5a5; }
.tl-fb-icon { font-size:20px; flex-shrink:0; }
.tl-fb-text { flex:1; }
.tl-btn-next { margin-left:auto; flex-shrink:0; background:#22c55e; color:#052e16; font-family:var(--tl-font-h); font-size:14px; font-weight:900; padding:10px 24px; border-radius:20px; border:none; cursor:pointer; transition:transform .15s,box-shadow .15s,background .15s; letter-spacing:.3px; box-shadow:0 2px 10px rgba(34,197,94,.4); }
.tl-btn-next:hover { transform:scale(1.06); background:#16a34a; box-shadow:0 4px 18px rgba(34,197,94,.55); }

/* Buttons */
.tl-btn-primary { background:linear-gradient(135deg,#ff6b35,#f7416a); color:#fff; font-family:var(--tl-font-h); font-size:14px; font-weight:800; padding:10px 24px; border-radius:22px; border:none; cursor:pointer; transition:background .25s,transform .15s,box-shadow .15s; box-shadow:0 4px 16px rgba(247,65,106,.35); }
.tl-btn-primary:hover { background:linear-gradient(135deg,#1a2555,#2a3880); box-shadow:0 4px 18px rgba(26,37,85,.4); transform:scale(1.04); }
.tl-btn-secondary { background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.18); color:var(--tl-text); font-family:var(--tl-font-b); font-size:13px; padding:10px 20px; border-radius:22px; cursor:pointer; transition:background .2s; }
.tl-btn-secondary:hover { background:rgba(255,255,255,.2); }
.tl-sub-btn-play  { background:rgba(78,205,196,.12); border:1px solid rgba(78,205,196,.35); color:var(--tl-accent3); font-family:var(--tl-font-b); font-size:12px; font-weight:700; padding:7px 16px; border-radius:14px; cursor:pointer; flex:1; transition:background .2s,border-color .2s; }
.tl-sub-btn-play:hover  { background:rgba(78,205,196,.25); border-color:rgba(78,205,196,.6); }
.tl-sub-btn-study { background:rgba(129,140,248,.12); border:1px solid rgba(129,140,248,.35); color:var(--tl-accent4); font-family:var(--tl-font-b); font-size:12px; font-weight:700; padding:7px 16px; border-radius:14px; cursor:pointer; flex:1; transition:background .2s,border-color .2s; }
.tl-sub-btn-study:hover { background:rgba(129,140,248,.25); border-color:rgba(129,140,248,.6); }

/* Result */
.tl-result-content { max-width:440px; margin:0 auto; text-align:center; padding:10px 0 20px; }
.tl-result-medal   { font-size:64px; margin-bottom:6px; animation:tlPop .5s ease both; }
.tl-result-title   { font-family:var(--tl-font-h); font-size:28px; margin:0 0 6px; color:var(--tl-text); }
.tl-result-subtitle { font-size:13px; color:var(--tl-muted); margin:0 0 20px; }
.tl-result-stats   { display:flex; justify-content:center; gap:14px; flex-wrap:wrap; margin-bottom:18px; }
.tl-stat-box  { background:rgba(255,255,255,.06); border:1px solid var(--tl-border); border-radius:14px; padding:12px 18px; min-width:80px; }
.tl-stat-val  { font-family:var(--tl-font-h); font-size:28px; font-weight:800; color:var(--tl-accent); }
.tl-stat-label { font-size:10px; color:var(--tl-muted); margin-top:2px; }
.tl-result-errors { text-align:left; margin-bottom:18px; }
.tl-result-errors-title { font-size:12px; font-weight:700; color:var(--tl-accent2); margin-bottom:8px; }
.tl-error-item { background:rgba(255,107,107,.07); border:1px solid rgba(255,107,107,.15); border-radius:9px; padding:9px 13px; margin-bottom:5px; font-size:12px; }
.tl-error-q { color:var(--tl-muted); margin-bottom:3px; }
.tl-error-a { font-weight:700; }
.tl-result-buttons { display:flex; gap:10px; justify-content:center; flex-wrap:wrap; }

/* Confetti */
.tl-confetti { position:absolute; inset:0; pointer-events:none; overflow:hidden; }
.tl-confetti-piece { position:absolute; width:8px; height:8px; border-radius:2px; animation:tlConfetti 1.2s ease-in both; }
@keyframes tlConfetti { 0%{transform:translateY(-20px) rotate(0deg);opacity:1} 100%{transform:translateY(400px) rotate(720deg);opacity:0} }

/* Impara */
.tl-impara-content { display:flex; flex-direction:column; gap:16px; overflow-y:auto; max-height:calc(100vh - 220px); padding-bottom:4px; }
.tl-impara-header  { display:flex; align-items:center; gap:12px; background:var(--tl-card); border:1px solid var(--tl-border); border-radius:var(--tl-r); padding:14px 16px; }
.tl-impara-icon  { font-size:32px; flex-shrink:0; }
.tl-impara-title { font-family:var(--tl-font-h); font-size:18px; margin:0 0 2px; color:var(--tl-text); }
.tl-impara-sub   { font-size:12px; color:var(--tl-muted); margin:0; }
.tl-impara-groups { display:flex; flex-direction:column; gap:14px; }
.tl-impara-group  { background:var(--tl-card); border:1px solid var(--tl-border); border-radius:var(--tl-r); overflow:hidden; }
.tl-impara-group-label { font-size:12px; font-weight:700; color:var(--tl-accent); font-style:normal; padding:10px 16px 8px; border-bottom:1px solid var(--tl-border); letter-spacing:.3px; text-transform:uppercase; }
.tl-impara-items  { display:flex; flex-direction:column; gap:0; }
.tl-impara-item   { display:flex; align-items:center; gap:12px; padding:11px 16px; border-bottom:1px solid rgba(255,255,255,.04); animation:tlFadeUp .25s ease both; }
.tl-impara-item:last-child { border-bottom:none; }
.tl-impara-num { width:26px; height:26px; border-radius:50%; flex-shrink:0; background:linear-gradient(135deg,var(--tl-accent4),#a78bfa); display:flex; align-items:center; justify-content:center; font-size:12px; font-weight:800; color:#fff; }
.tl-impara-item-icon  { font-size:20px; flex-shrink:0; }
.tl-impara-item-label { font-family:var(--tl-font-h); font-size:15px; flex:1; }
.tl-impara-arrow  { font-size:11px; color:var(--tl-muted); padding:2px 16px 0; text-align:center; }
.tl-impara-footer { text-align:center; padding:4px 0 8px; }
.tl-impara-spiegazione { background:rgba(255,211,61,.08); border:1px solid rgba(255,211,61,.2); border-radius:var(--tl-r); padding:14px 16px; font-size:14px; line-height:1.6; color:var(--tl-text); }
.tl-impara-regola { background:var(--tl-card); border:1px solid var(--tl-border); border-radius:var(--tl-r); overflow:hidden; margin-bottom:2px; }
.tl-impara-regola-title { font-family:var(--tl-font-h); font-size:14px; font-weight:800; color:var(--tl-accent); padding:12px 16px 8px; }
.tl-impara-regola-testo { font-size:13px; line-height:1.6; color:var(--tl-text); padding:0 16px 10px; }
.tl-impara-regola-esempi { display:flex; flex-direction:column; gap:4px; padding:0 16px 14px; }
.tl-impara-regola-esempio { display:flex; align-items:flex-start; gap:8px; font-size:13px; color:rgba(255,255,255,.75); background:rgba(255,255,255,.04); border-radius:6px; padding:7px 12px; }
.tl-impara-regola-esempio::before { content:'💡'; flex-shrink:0; }

/* Animations */
@keyframes tlFadeUp { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:translateY(0)} }
@keyframes tlPop    { 0%{transform:scale(.88)} 60%{transform:scale(1.1)} 100%{transform:scale(1)} }
@keyframes tlShake  { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-6px)} 75%{transform:translateX(6px)} }

/* Responsive */
@media (max-width:600px) {
    .tl-levels-grid { grid-template-columns:repeat(2,1fr); gap:10px; }
    .tl-click-grid  { grid-template-columns:repeat(2,1fr); }
    .tl-timeline-slots { gap:3px; }
    .tl-tl-drop { min-height:46px; }
    .tl-drag-card { font-size:11px; padding:7px 10px; }
    .tl-result-medal { font-size:52px; }
    .tl-title { font-size:26px; }
    .tl-wrapper { border-radius:16px; }
}