:root{
  --bg:#4828578f;
  --card:#fe0000;
  --accent:#5f5aec;
  --accent-2:#18316d;
  --muted:#9aa7bf;
  --glass: rgb(10, 6, 255);
  --radius:14px;
  --glass-2: rgba(255,255,255,0.02);
  --shadow: 0 8px 30px rgba(2,6,23,0.6);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 10% 10%, rgba(96,165,250,0.06), transparent 8%),
    radial-gradient(1000px 500px at 90% 90%, rgba(110,231,183,0.04), transparent 8%),
    var(--bg);
  color:#250aab;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:28px;
}

/* Container */
.container{
  width:100%;
  max-width:920px;
  margin:auto;
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}

/* Hero */
.hero{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  border-radius:var(--radius);
  padding:20px 22px;
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.title{font-size:1.6rem;margin:0}
.subtitle{color:var(--muted);margin:0;font-size:0.95rem}

/* Controls */
.controls{
  display:flex;
  gap:16px;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}
.exam-list{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.exam-btn{
  background:var(--glass);
  border:1px solid rgba(255,255,255,0.03);
  color:inherit;
  padding:10px 14px;
  border-radius:12px;
  cursor:pointer;
  min-width:120px;
  text-align:center;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
  box-shadow: 0 4px 18px rgba(2,6,23,0.45);
  font-weight:600;
}
.exam-btn .date{display:block;font-size:0.85rem;color:var(--muted);font-weight:500}
.exam-btn[aria-selected="true"]{
  transform:translateY(-6px);
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  color:#04202b;
  box-shadow: 0 10px 30px rgba(96,165,250,0.12), 0 6px 18px rgba(6,12,30,0.6);
}

/* Toggle */
.toggle-row{display:flex;align-items:center;gap:12px}
.toggle{display:flex;align-items:center;gap:10px;cursor:pointer}
.toggle input{display:none}
.toggle-slider{
  width:44px;height:24px;border-radius:999px;background:var(--glass);position:relative;box-shadow:inset 0 -6px 12px rgba(0,0,0,0.25);
}
.toggle-slider::after{
  content:"";position:absolute;left:4px;top:4px;width:16px;height:16px;border-radius:50%;background:white;transition:all .18s ease;
}
.toggle input:checked + .toggle-slider{background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.toggle input:checked + .toggle-slider::after{transform:translateX(20px);background:#04202b}
.toggle-label{color:var(--muted);font-size:0.9rem}

/* Countdown card */
.countdown-card{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:18px;
  padding:22px;
  box-shadow:var(--shadow);
  display:grid;
  gap:18px;
}
.exam-header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.exam-header h2{margin:0;font-size:1.25rem}
.exam-date{color:var(--muted);font-weight:600}

/* Time grid */
.time-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:12px;
}
.time-item{
  background:linear-gradient(180deg, rgba(255,255,255,0.01), transparent);
  border-radius:12px;padding:14px;text-align:center;
  border:1px solid var(--glass-2);
}
.number{font-size:1.6rem;font-weight:700;color:var(--accent-2)}
.label{color:var(--muted);font-weight:600;margin-top:6px}

/* Progress */
.progress-wrap{display:flex;flex-direction:column;gap:8px}
.progress-bar{height:12px;background:rgba(255,255,255,0.03);border-radius:999px;overflow:hidden;border:1px solid rgba(255,255,255,0.02)}
.progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width 0.6s cubic-bezier(.2,.9,.2,1)}
.progress-label{font-size:0.9rem;color:var(--muted);font-weight:600}

/* Actions */
.actions{display:flex;gap:12px;justify-content:flex-end}
.btn{padding:10px 14px;border-radius:10px;border:0;background:transparent;color:var(--accent-2);cursor:pointer;font-weight:700}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#04202b;box-shadow:0 8px 20px rgba(96,165,250,0.12)}

/* Footer */
.footer{text-align:center;color:var(--muted);font-size:0.85rem;padding:6px}

/* Responsive */
@media (max-width:720px){
  .time-grid{grid-template-columns:repeat(2,1fr)}
  .exam-list{justify-content:center}
  .actions{justify-content:center}
}

/* Compact view adjustments toggled by JS */
.compact .time-grid .number{font-size:1.2rem}
.compact .exam-header h2{font-size:1.05rem}