/* ============================================
   LABORATORIO SCIENTIFICO — SHARED CSS
   SacraFamiglia education
   ============================================ */

/* === VARIABLES === */
:root {
  --space-bg: #0a0e1a;
  --space-surface: #111827;
  --space-accent: #4fc3f7;
  --space-glow: rgba(79,195,247,0.25);
  --corona: #ffcc02;
  --corona-glow: rgba(255,204,2,0.2);
  --bianco: #ffffff;
  --nero: #1a1a1a;
  --n1: #ab47bc; --n1bg: rgba(171,71,188,0.12); --n1border: rgba(171,71,188,0.25);
  --n2: #ef5350; --n2bg: rgba(239,83,80,0.12); --n2border: rgba(239,83,80,0.25);
  --n3: #66bb6a; --n3bg: rgba(102,187,106,0.12); --n3border: rgba(102,187,106,0.25);
  --n4: #8d6e63; --n4bg: rgba(141,110,99,0.12); --n4border: rgba(141,110,99,0.25);
  --n5: #4fc3f7; --n5bg: rgba(79,195,247,0.12); --n5border: rgba(79,195,247,0.25);
  --font-body: 'DM Sans', sans-serif;
  --font-display: 'Playfair Display', serif;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: var(--font-body);
  background: var(--space-bg);
  color: var(--bianco);
  overflow-x: hidden;
  min-height: 100vh;
  line-height: 1.6;
}
a { color: var(--space-accent); text-decoration: none; }

/* === STARS === */
.stars-container { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.star { position: absolute; border-radius: 50%; background: #fff; animation: twinkle var(--dur) ease-in-out infinite alternate; }
@keyframes twinkle { 0%{opacity:.15} 100%{opacity:.9} }

/* === LAYOUT === */
.app-container { position: relative; z-index: 1; max-width: 1280px; margin: 0 auto; padding: 20px; }

/* === PAGE HEADER === */
.page-header { text-align: center; padding: 32px 20px 16px; }
.page-header h1 {
  font-family: var(--font-display); font-size: clamp(1.6rem, 3.5vw, 2.6rem); font-weight: 800;
  background: linear-gradient(135deg, var(--space-accent), var(--corona), var(--space-accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.page-header .subtitle { font-size: .85rem; color: rgba(255,255,255,.5); font-weight: 300; letter-spacing: 2px; text-transform: uppercase; margin-top: 4px; }
.brand-tag { display: inline-block; margin-top: 10px; padding: 4px 14px; border-radius: 20px; font-size: .62rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; background: rgba(27,109,63,.22); color: #6dcf97; border: 1px solid rgba(27,109,63,.3); }
.curricolo-ref { text-align: center; margin: 8px 0 18px; font-size: .68rem; color: rgba(255,255,255,.3); font-style: italic; }

/* === BACK BUTTON === */
.back-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; border-radius: 30px;
  border: 1.5px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.04);
  color: rgba(255,255,255,.6);
  font-family: var(--font-body); font-size: .78rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
  text-decoration: none; margin-bottom: 16px;
}
.back-btn:hover { border-color: var(--space-accent); color: var(--space-accent); }
.back-btn svg { width: 16px; height: 16px; }

/* === COMPLEXITY SELECTOR === */
.complexity-bar { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 0 16px; flex-wrap: wrap; }
.complexity-label { font-size: .72rem; color: rgba(255,255,255,.4); text-transform: uppercase; letter-spacing: 1px; }
.complexity-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 14px; border-radius: 30px;
  border: 1.5px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.03);
  color: rgba(255,255,255,.55);
  font-family: var(--font-body); font-size: .72rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
}
.complexity-btn:hover { border-color: var(--space-accent); color: var(--space-accent); }
.complexity-btn.active { background: rgba(79,195,247,.1); border-color: var(--space-accent); color: var(--space-accent); }

/* === SECTION PANELS === */
.section-panel {
  background: rgba(255,255,255,.035);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  padding: 26px;
  margin-bottom: 18px;
  backdrop-filter: blur(8px);
}
.section-panel h2 {
  font-family: var(--font-display); font-size: 1.35rem; font-weight: 700;
  color: var(--nucleo-color, var(--space-accent));
  margin-bottom: 6px;
}
.section-panel h3 { font-size: 1rem; font-weight: 600; color: var(--corona); margin: 16px 0 8px; }
.section-panel p { font-size: .86rem; line-height: 1.7; color: rgba(255,255,255,.7); margin-bottom: 10px; }

/* === CURRICOLO BOX (toggle docente) === */
.curricolo-toggle { display:flex; align-items:center; gap:6px; cursor:pointer; margin:12px 0 0; padding:8px 14px; border-radius:var(--radius); background:rgba(255,255,255,.02); border:1px solid rgba(255,255,255,.05); transition:var(--transition); width:fit-content; }
.curricolo-toggle:hover { border-color:rgba(255,255,255,.12); }
.curricolo-toggle svg { width:14px; height:14px; color:rgba(255,255,255,.25); transition:var(--transition); }
.curricolo-toggle span { font-size:.65rem; color:rgba(255,255,255,.25); text-transform:uppercase; letter-spacing:1px; font-weight:500; }
.curricolo-toggle.open svg { transform:rotate(90deg); color:var(--space-accent); }
.curricolo-toggle.open span { color:var(--space-accent); }
.curricolo-box { background: rgba(79,195,247,.05); border: 1px solid rgba(79,195,247,.12); border-radius: var(--radius); padding: 0 16px; margin: 0; max-height:0; overflow:hidden; opacity:0; transition: max-height .4s ease, opacity .3s ease, padding .3s ease, margin .3s ease; }
.curricolo-box.visible { max-height:500px; opacity:1; padding: 14px 16px; margin: 8px 0 12px; }
/* === SFIDE (micro-challenges) === */
.challenge-box { background:rgba(255,204,2,.04); border:1px solid rgba(255,204,2,.12); border-radius:var(--radius); padding:14px 16px; margin:12px 0; }
.challenge-box .ch-title { font-size:.7rem; text-transform:uppercase; letter-spacing:1.5px; color:var(--corona); font-weight:600; margin-bottom:8px; display:flex; align-items:center; gap:6px; }
.challenge-box .ch-title svg { width:14px; height:14px; }
.challenge-item { font-size:.8rem; color:rgba(255,255,255,.6); line-height:1.6; margin-bottom:6px; padding-left:20px; position:relative; }
.challenge-item::before { content:'\25B8'; position:absolute; left:4px; top:0; color:var(--corona); font-size:.7rem; }
.curricolo-box .curricolo-title { font-size: .65rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--space-accent); font-weight: 600; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.curricolo-box .curricolo-title svg { width: 13px; height: 13px; }
.curricolo-obj { font-size: .78rem; color: rgba(255,255,255,.55); line-height: 1.6; margin-bottom: 5px; padding-left: 14px; position: relative; }
.curricolo-obj::before { content: ''; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; border-radius: 50%; background: var(--space-accent); opacity: .4; }
.classe-tag { display: inline-block; padding: 1px 7px; border-radius: 10px; font-size: .58rem; font-weight: 600; margin-right: 3px; }
.tag-3p { background: rgba(102,187,106,.18); color: #81c784; }
.tag-5p { background: rgba(255,193,7,.18); color: #ffd54f; }
.tag-sec { background: rgba(79,195,247,.18); color: #4fc3f7; }

/* === HYPERTEXT (ipertesto) === */
.iper { color: var(--space-accent); border-bottom: 1px dashed rgba(79,195,247,.3); cursor: pointer; transition: var(--transition); }
.iper:hover { color: var(--corona); border-color: var(--corona); }
.iper-panel {
  display: none; position: fixed; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: min(500px, 92vw); max-height: 80vh; overflow-y: auto;
  background: #141a2e; border: 1px solid rgba(79,195,247,.2);
  border-radius: var(--radius-lg); padding: 24px;
  z-index: 1000; box-shadow: 0 20px 60px rgba(0,0,0,.55);
  animation: panelIn .25s ease-out;
}
@keyframes panelIn { from{opacity:0;transform:translate(-50%,-48%) scale(.96)} to{opacity:1;transform:translate(-50%,-50%) scale(1)} }
.iper-panel.visible { display: block; }
.iper-panel h4 { font-family: var(--font-display); font-size: 1.1rem; color: var(--space-accent); margin-bottom: 10px; }
.iper-panel p { font-size: .84rem; line-height: 1.7; color: rgba(255,255,255,.7); margin-bottom: 8px; }
.level-tag { display: inline-block; padding: 2px 9px; border-radius: 12px; font-size: .58rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.level-tag.l1 { background: rgba(76,175,80,.18); color: #81c784; }
.level-tag.l2 { background: rgba(255,193,7,.18); color: #ffd54f; }
.level-tag.l3 { background: rgba(244,67,54,.18); color: #ef9a9a; }
.iper-close { position: absolute; top: 12px; right: 12px; width: 28px; height: 28px; border-radius: 50%; border: none; background: rgba(255,255,255,.07); color: rgba(255,255,255,.5); font-size: 1rem; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.iper-close:hover { background: rgba(255,255,255,.14); color: #fff; }
.overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 999; }
.overlay.visible { display: block; }

/* === SIM BUTTONS === */
.sim-btn {
  padding: 7px 16px; border-radius: 8px;
  border: 1px solid rgba(79,195,247,.2);
  background: rgba(79,195,247,.07);
  color: var(--space-accent);
  font-family: var(--font-body); font-size: .74rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.sim-btn:hover { background: rgba(79,195,247,.18); }
.sim-btn.active { background: var(--space-accent); color: var(--space-bg); }

/* === EXPERIMENT AREA === */
.experiment-area {
  display: none; background: rgba(0,0,0,.25);
  border: 1px solid rgba(79,195,247,.1);
  border-radius: var(--radius-lg); padding: 20px;
  margin-top: 14px; animation: panelIn .3s ease-out;
}
.experiment-area.visible { display: block; }
.experiment-area h3 { color: var(--nucleo-color, var(--space-accent)); margin-bottom: 12px; font-size: 1rem; }
.experiment-area canvas { display: block; width: 100%; border-radius: var(--radius); background: #050810; margin-bottom: 10px; }
.exp-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 10px; }
.exp-controls label { font-size: .74rem; color: rgba(255,255,255,.5); }
.exp-controls input[type="range"] { width: 110px; accent-color: var(--space-accent); }
.exp-controls span { color: var(--space-accent); font-size: .82rem; min-width: 50px; }
.exp-readout {
  font-size: .8rem; color: rgba(255,255,255,.6); line-height: 1.7;
  padding: 12px 14px;
  background: rgba(255,255,255,.025);
  border-radius: var(--radius);
  border-left: 3px solid var(--nucleo-color, var(--space-accent));
}
.exp-readout strong { color: rgba(255,255,255,.85); }
.exp-readout em { color: var(--corona); font-style: normal; }

/* === CARD GRID === */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin-top: 14px; }
.exp-card {
  background: rgba(255,255,255,.035); border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius); padding: 20px;
  cursor: pointer; transition: var(--transition);
  position: relative; overflow: hidden;
}
.exp-card::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:linear-gradient(90deg, var(--nucleo-color, var(--space-accent)), var(--corona)); transform:scaleX(0); transform-origin:left; transition:var(--transition); }
.exp-card:hover { border-color: rgba(255,255,255,.15); transform: translateY(-2px); }
.exp-card:hover::before { transform: scaleX(1); }
.exp-card h4 { font-size: .88rem; font-weight: 600; color: var(--bianco); margin-bottom: 4px; }
.exp-card p { font-size: .76rem; color: rgba(255,255,255,.45); line-height: 1.5; }
.complexity-dots { display: flex; gap: 4px; margin-top: 8px; }
.complexity-dots .dot { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.1); }
.complexity-dots .dot.filled { background: var(--nucleo-color, var(--space-accent)); }
.obj-tag { margin-top: 7px; font-size: .6rem; color: rgba(255,255,255,.3); font-style: italic; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .app-container { padding: 10px; }
  .section-panel { padding: 18px 14px; }
  .complexity-bar { gap: 6px; }
  .complexity-btn { padding: 5px 10px; font-size: .68rem; }
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(79,195,247,.2); border-radius: 3px; }

/* === TEACHER TOGGLE (curricolo box) === */
.teacher-toggle {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,.06);
  background: rgba(255,255,255,.02);
  color: rgba(255,255,255,.3);
  font-family: var(--font-body); font-size: .65rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
  margin-top: 10px; width: fit-content;
}
.teacher-toggle:hover { border-color: rgba(255,255,255,.12); color: rgba(255,255,255,.5); }
.teacher-toggle svg { width: 13px; height: 13px; }
.teacher-content { max-height: 0; overflow: hidden; opacity: 0; transition: max-height .4s ease, opacity .3s ease, margin .3s ease; margin-top: 0; }
.teacher-content.open { max-height: 500px; opacity: 1; margin-top: 10px; }

/* === SOCRATIC INTRO === */
.intro-question {
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 600;
  color: var(--corona); line-height: 1.5;
  margin-bottom: 10px;
  padding-left: 16px;
  border-left: 3px solid var(--corona);
}

/* === MISSION CARDS === */
.missions-section { margin-top: 16px; }
.missions-title {
  font-size: .7rem; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--nucleo-color, var(--space-accent)); font-weight: 600;
  margin-bottom: 10px; display: flex; align-items: center; gap: 6px;
}
.missions-title svg { width: 14px; height: 14px; }
.mission-list { display: flex; flex-direction: column; gap: 8px; }
.mission-card {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 14px; border-radius: var(--radius);
  background: rgba(255,255,255,.025);
  border: 1px solid rgba(255,255,255,.05);
  transition: var(--transition);
  cursor: pointer;
}
.mission-card:hover { border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.04); }
.mission-card.completed { border-color: rgba(102,187,106,.25); background: rgba(102,187,106,.04); }
.mission-num {
  width: 24px; height: 24px; border-radius: 50%;
  background: rgba(255,255,255,.06);
  color: var(--nucleo-color, var(--space-accent));
  font-size: .7rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.mission-card.completed .mission-num { background: rgba(102,187,106,.15); color: #66bb6a; }
.mission-text { flex: 1; }
.mission-text p { font-size: .8rem; color: rgba(255,255,255,.6); line-height: 1.5; margin: 0; }
.mission-text .mission-hint {
  font-size: .7rem; color: rgba(255,255,255,.3); margin-top: 4px;
  display: none; font-style: italic;
}
.mission-card.show-hint .mission-hint { display: block; }
.mission-check { font-size: .7rem; color: rgba(255,255,255,.25); padding-top: 2px; }
.mission-card.completed .mission-check { color: #66bb6a; }

/* === THINK QUESTION (metacognitive) === */
.think-box {
  background: rgba(255,204,2,.04);
  border: 1px solid rgba(255,204,2,.12);
  border-left: 3px solid var(--corona);
  border-radius: var(--radius);
  padding: 14px 16px; margin-top: 14px;
}
.think-box .think-q { font-size: .85rem; color: rgba(255,255,255,.7); line-height: 1.6; }
.think-box .think-q strong { color: var(--corona); }
.think-answer {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height .3s ease, opacity .3s ease, margin .3s ease;
  margin-top: 0;
}
.think-answer.open { max-height: 200px; opacity: 1; margin-top: 10px; }
.think-answer p { font-size: .8rem; color: rgba(255,255,255,.55); line-height: 1.6; }
.think-reveal {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 12px; border-radius: 6px; margin-top: 8px;
  border: 1px solid rgba(255,204,2,.15);
  background: rgba(255,204,2,.05);
  color: var(--corona); font-family: var(--font-body);
  font-size: .7rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.think-reveal:hover { background: rgba(255,204,2,.12); }