/* =============== THEME =============== */
:root{
  --bg:#050a18;
  --ink:#e7ecff;
  --muted:#b8c6ff;
  --card:rgba(255,255,255,.05);
  --stroke:rgba(255,255,255,.18);
  --accent:#9fd7ff;

  /* Cub (din cube.js: DEPTH = latură/2) */
  --cube-size:200px;
  --cube-scale:1;
}

*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,Arial,sans-serif;line-height:1.5}

/* =============== HEADER =============== */
.site-header{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:10px 20px;background:#050a18;color:#cfe0ff;
  border-bottom:1px solid rgba(255,255,255,.06);
}
#logo-sphere{width:80px;height:80px;border-radius:50%;display:block}

.main-nav{display:flex;gap:16px;align-items:center}
.main-nav a{color:#ffcc66;text-decoration:none;font-weight:600}
.main-nav a:hover{color:#fff}

/* Burger button */
.menu-toggle{
  display:none;background:transparent;color:#cfe0ff;
  border:1px solid rgba(255,255,255,.25);
  padding:8px 12px;border-radius:10px;cursor:pointer;
}

/* Mobile nav */
@media (max-width:768px){
  #logo-sphere{width:60px;height:60px}
  .menu-toggle{display:block}
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:#050a18;border-top:1px solid rgba(255,255,255,.1);
    padding:12px 20px;flex-direction:column;gap:10px
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:8px 4px}
}

/* =============== BANNER =============== */
.banner{position:relative;width:100%;height:80vh;margin-top:0;overflow:hidden}
#bg{position:absolute;inset:0;width:100%;height:100%;display:block;background:#050a18}
.banner-text{
  position:absolute;left:2%;top:20%;transform:translateY(-20%);z-index:2;max-width:260px;
  background:rgba(5,10,24,.45);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:18px
}
.banner-text h1{margin:0 0 8px;font-size:45px}
.banner-text .sub{margin:0 0 14px;color:var(--muted)}
.banner-text .cta{padding:10px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.25);background:transparent;color:var(--ink);cursor:pointer}
.controls-hint{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);font-size:14px;color:#ccc;z-index:2}
@media(max-width:540px){ .banner-text h1{font-size:26px} }

/* =============== SITE LAYOUT =============== */
.site{position:relative;z-index:1}
section{max-width:1100px;margin:0 auto;padding:56px 20px}
h2{font-size:clamp(22px,3vw,32px);margin:0 8px;color:var(--accent)}
section>p{margin:0 0 18px;color:#d9e2ff}

/* =============== CUBES =============== */
.cube-wrapper{
  width:var(--cube-size);height:var(--cube-size);
  margin:44px auto;perspective:1200px;
  transform:scale(var(--cube-scale));transform-origin:center top
}
.cube-row{display:flex;gap:40px;justify-content:center;align-items:center;flex-wrap:wrap;margin:24px auto}
.cube-row .cube-figure{transform:scale(var(--cube-scale));transform-origin:center top}

.cube{
  width:var(--cube-size);height:var(--cube-size);
  position:relative;margin:0 auto;transform-style:preserve-3d;
  cursor:grab;user-select:none;touch-action:none
}
.cube.dragging{cursor:grabbing}
.cube-face{
  position:absolute;inset:0;border-radius:10px;overflow:hidden;
  backface-visibility:hidden;-webkit-backface-visibility:hidden;
  background-size:cover;background-position:center;background-repeat:no-repeat;
  border:1px solid rgba(255,255,255,.08)
}
.cube-face {
  background-size: cover;
  background-position: center;
  border: 3px solid white;  /* chenăr alb la fiecare față */
  box-sizing: border-box;   /* ca să nu se strice dimensiunea */
}

/* Responsive scaling—nu atinge geometria (se potrivește cu cube.js) */
@media (max-width:1100px){ :root{ --cube-scale:.95 } }
@media (max-width:980px){  :root{ --cube-scale:.88 } }
@media (max-width:860px){  :root{ --cube-scale:.82 } }
@media (max-width:760px){  :root{ --cube-scale:.76 } }
@media (max-width:640px){  :root{ --cube-scale:.70 } }
@media (max-width:520px){  :root{ --cube-scale:.64 } }
@media (max-width:420px){  :root{ --cube-scale:.58 } }

.cube-figure{display:flex;flex-direction:column;align-items:center;gap:8px}
.cube-figure figcaption{
  font-size:14px;margin-top:20px;color:#cfe2ff;opacity:.9;text-align:center;
  padding:5px;border:1px solid #fff;max-width:var(--cube-size)
}

/* =============== LIGHTBOX OVERLAY (1:1) =============== */
.cube-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.75);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .18s ease;z-index:2147483647;padding:24px
}
.cube-overlay.open{opacity:1;pointer-events:auto}
.cube-overlay img{
  width:min(80vmin,560px);height:min(80vmin,560px);aspect-ratio:1/1;
  object-fit:cover;border:1px solid #fff;border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.6)
}

/* =============== FACTS CAROUSEL (3 vizibile) =============== */
.facts-carousel{position:relative;max-width:1000px;margin:18px auto 0}
.facts-carousel .viewport{overflow:hidden}
.facts-carousel .track{display:flex;gap:16px;flex-wrap:nowrap;will-change:transform;transition:transform .35s ease}
.facts-carousel .fact-card{
  flex:0 0 calc((100% - 32px)/3);
  background:var(--card);border:1px solid var(--stroke);
  border-radius:10px;padding:14px;text-align:left
}
.facts-carousel .fact-card h3{margin:0 0 6px;font-size:18px;color:#ffcc00}
.facts-carousel .fact-card p{margin:0;color:#dfe7ff}

/* săgeți */
.facts-carousel .arrow{
  position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.35);background:rgba(5,10,24,.45);
  color:var(--ink);display:grid;place-items:center;cursor:pointer;z-index:2
}
.facts-carousel .arrow:hover{background:rgba(255,255,255,.12)}
.facts-carousel .arrow.left{left:-10px}
.facts-carousel .arrow.right{right:-10px}

/* Read more / less */
.fact-text{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-height:3.2em}
.fact-card.expanded .fact-text{-webkit-line-clamp:unset;max-height:none}
.more-wrap{margin-top:10px;display:flex;gap:8px}
.read-more,.read-less{
  font:600 12px/1.1 system-ui,Arial,sans-serif;
  padding:8px 10px;border-radius:8px;cursor:pointer;border:1px solid rgba(255,255,255,.25);
  background:transparent;color:var(--ink)
}
.read-more:hover,.read-less:hover{background:rgba(255,255,255,.1)}

/* =============== OCEANS CONTROLS =============== */
.ocean-controls{display:flex;gap:10px;justify-content:center;margin:12px 0 0}
.ocean-controls button{
  font:600 12px/1 system-ui;color:var(--ink);background:transparent;
  border:1px solid rgba(255,255,255,.25);border-radius:8px;padding:8px 12px;cursor:pointer
}
.ocean-controls button:hover{background:rgba(255,255,255,.1)}
@media (max-width:760px){ .cube-row{gap:22px} .cube-figure{width:100%} }

/* =============== VOLCANOES =============== */
#volcanoes{text-align:center;margin:40px auto;max-width:900px;padding:20px}
.volc-wrap{position:relative}
#volc-video{
  display:block;width:100%;max-width:800px;margin:0 auto;border-radius:12px;box-shadow:0 0 15px rgba(0,0,0,.5)
}
.video-controls{margin-top:12px}
.video-controls button{
  background:#ff4500;border:none;color:#fff;padding:10px 20px;margin:0 5px;border-radius:6px;cursor:pointer;
  font-size:16px;transition:background .3s
}
.video-controls button:hover{background:#e03d00}

/* =============== ASTRO =============== */
#astro{max-width:1100px;margin:0 auto;padding:56px 20px}
#astro h2{color:#9fd7ff;margin:0 0 8px}
#astro-canvas{
  display:block;width:80%;height:200px;margin:0 auto 30px auto;background:#000;border-radius:12px;box-shadow:0 0 15px rgba(255,255,255,.3);
  cursor:grab
}
#astro-canvas.dragging{cursor:grabbing}

/* =============== RESPONSIVE =============== */
@media (max-width:900px){
  .facts-carousel .fact-card{flex:0 0 calc((100% - 16px)/2)}
}
@media (max-width:560px){
  .facts-carousel .fact-card{flex:0 0 100%}
  .facts-carousel .arrow.left{left:4px}
  .facts-carousel .arrow.right{right:4px}
}

/* Tipografie fluidă */
h1{font-size:clamp(1.8rem,3.5vw,2.8rem)}
h2{font-size:clamp(1.2rem,2.6vw,2rem)}

/* Overlay pe telefoane */
@media (max-width:420px){
  .cube-overlay img{max-width:98vw;max-height:84vh}
}

/* Footer */
.site-footer{background:#050a18;color:#cfe0ff;text-align:center;padding:20px;font-size:.9rem}
.site-footer a{color:#ffcc66;text-decoration:none}
.site-footer a:hover{text-decoration:underline}