/* ===== SmartStudyDZ — exam countdown slider (BAC / BEM) ===== */
.sd .cd-blk{padding:56px 0 8px}
.sd .cd-slider{position:relative;max-width:980px;margin:0 auto}
.sd .cd-track{display:flex;transition:transform .6s cubic-bezier(.22,.8,.25,1);will-change:transform}
.sd .cd-vp{overflow:hidden;border-radius:28px;box-shadow:0 30px 60px -32px rgba(24,56,88,.65)}
.sd .cd-slide{flex:0 0 100%;position:relative;overflow:hidden;color:#fff;padding:38px 40px 34px;
  background:linear-gradient(135deg,#132F4D 0%,#1F5F96 62%,#2A7BC0 100%)}
.sd .cd-slide.bem{background:linear-gradient(135deg,#2A1A06 0%,#9A5A0B 55%,#D98410 100%)}
.sd .cd-slide::before{content:"";position:absolute;width:420px;height:420px;left:-150px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(247,162,51,.35),transparent 65%);pointer-events:none}
.sd .cd-slide.bem::before{background:radial-gradient(circle,rgba(255,224,170,.35),transparent 65%)}
.sd .cd-slide::after{content:"";position:absolute;width:300px;height:300px;right:-110px;bottom:-170px;border-radius:50%;
  background:radial-gradient(circle,rgba(140,195,242,.28),transparent 65%);pointer-events:none}
.sd .cd-top{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.sd .cd-tag{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:13px;padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22)}
.sd .cd-tag i{color:#FFB54D}
.sd .cd-slide.bem .cd-tag i{color:#FFE2B0}
.sd .cd-title{position:relative;z-index:1;font-size:clamp(24px,3.2vw,34px);font-weight:800;line-height:1.35;margin:0 0 4px}
.sd .cd-title b{color:#FFB54D}
.sd .cd-slide.bem .cd-title b{color:#FFE2B0}
.sd .cd-date{position:relative;z-index:1;color:#D7E7F6;font-weight:700;font-size:15px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.sd .cd-slide.bem .cd-date{color:#FBE8CC}
.sd .cd-est{font-size:12px;font-weight:800;padding:3px 10px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff}
.sd .cd-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px;direction:rtl}
.sd .cd-u{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:16px 8px 12px;text-align:center;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.sd .cd-n{display:block;direction:ltr;font-variant-numeric:tabular-nums;font-size:clamp(34px,6vw,58px);font-weight:800;line-height:1.1;letter-spacing:.5px}
.sd .cd-n.tick{animation:cdTick .45s ease}
@keyframes cdTick{0%{transform:translateY(-6px);opacity:.35}100%{transform:none;opacity:1}}
.sd .cd-l{display:block;margin-top:4px;font-weight:700;font-size:14px;color:#D7E7F6}
.sd .cd-slide.bem .cd-l{color:#FBE8CC}
.sd .cd-u.days{background:rgba(247,162,51,.22);border-color:rgba(247,162,51,.5)}
.sd .cd-slide.bem .cd-u.days{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.45)}
.sd .cd-done{position:relative;z-index:1;margin-top:22px;font-size:22px;font-weight:800;display:none}
.sd .cd-slide.over .cd-grid{display:none}
.sd .cd-slide.over .cd-done{display:block}
.sd .cd-nav{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:16px}
.sd .cd-dot{width:10px;height:10px;border-radius:999px;border:0;padding:0;background:#C9D8E8;cursor:pointer;transition:width .3s,background .3s}
.sd .cd-dot.on{width:30px;background:var(--orange)}
.sd .cd-arr{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--white);color:var(--navy);display:grid;place-items:center;cursor:pointer;font-size:14px}
.sd .cd-arr:hover{border-color:var(--blue);color:var(--blue)}
html[data-theme=dark] .sd .cd-dot{background:#2C4A6B}
html[data-theme=dark] .sd .cd-arr{background:#12233A;border-color:#23405F;color:#EAF2FB}
@media (max-width:640px){
  .sd .cd-blk{padding:36px 0 4px}
  .sd .cd-slide{padding:26px 18px 22px}
  .sd .cd-grid{gap:8px;margin-top:18px}
  .sd .cd-u{border-radius:14px;padding:12px 4px 9px}
  .sd .cd-l{font-size:12px}
  .sd .cd-top{margin-bottom:14px}
}
@media (prefers-reduced-motion:reduce){.sd .cd-track{transition:none}.sd .cd-n.tick{animation:none}}