/* ===== LSStudy — Cronômetro global ===== */
.study-timer{
  position:fixed; right:24px; bottom:24px; z-index:900;
  font-family:var(--font,'Inter',sans-serif);
  color:var(--text-primary,#fff);
}

/* ---------- Idle ---------- */
.study-timer__idle[hidden]{display:none}
.study-timer__start{
  display:inline-flex; align-items:center; gap:10px;
  padding:12px 20px; border:none; border-radius:999px;
  background:linear-gradient(135deg,#6C63FF 0%,#5A52D5 100%);
  color:#fff; font-weight:600; font-size:.9rem; cursor:pointer;
  box-shadow:0 8px 24px rgba(108,99,255,.35),0 2px 6px rgba(0,0,0,.4);
  transition:transform .15s ease,box-shadow .15s ease;
}
.study-timer__start:hover{transform:translateY(-1px);
  box-shadow:0 10px 28px rgba(108,99,255,.5),0 2px 8px rgba(0,0,0,.5)}
.study-timer__start:active{transform:translateY(0)}
.study-timer__start-icon{
  display:inline-flex; align-items:center; justify-content:center;
  width:22px; height:22px; border-radius:50%;
  background:rgba(255,255,255,.2); font-size:.9rem;
}

/* ---------- Active ---------- */
.study-timer__active{
  display:flex; align-items:center; gap:12px; padding:10px 14px;
  border-radius:14px; background:rgba(23,23,37,.95);
  border:1px solid var(--border,#252538);
  backdrop-filter:blur(12px);
  box-shadow:0 8px 32px rgba(0,0,0,.5);
}
.study-timer__active[hidden]{display:none}
.study-timer__indicator{
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 12px; border-radius:999px;
  background:rgba(108,99,255,.15); font-variant-numeric:tabular-nums;
}
.study-timer__indicator[data-status="paused"]{background:rgba(245,158,11,.15)}
.study-timer__dot{
  width:8px; height:8px; border-radius:50%;
  background:#6C63FF; box-shadow:0 0 8px rgba(108,99,255,.8);
  animation:st-pulse 1.6s infinite;
}
.study-timer__indicator[data-status="paused"] .study-timer__dot{
  background:#F59E0B; box-shadow:0 0 8px rgba(245,158,11,.8); animation:none;
}
@keyframes st-pulse{0%,100%{opacity:1}50%{opacity:.4}}
.study-timer__time{
  font-weight:600; font-size:.95rem; color:#fff; letter-spacing:.02em;
}
.study-timer__meta{
  display:flex; flex-direction:column; line-height:1.2;
  max-width:200px; min-width:0;
}
.study-timer__subject{
  font-size:.72rem; color:var(--text-tertiary,#A0A8C0);
  text-transform:uppercase; letter-spacing:.05em;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.study-timer__topic{
  font-size:.85rem; color:#fff; font-weight:500;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.study-timer__actions{display:inline-flex; gap:6px; margin-left:4px}
.study-timer__action{
  display:inline-flex; align-items:center; justify-content:center;
  width:34px; height:34px; border:none; border-radius:50%;
  background:rgba(255,255,255,.06); color:var(--text-secondary,#D0D4E8);
  cursor:pointer; font-size:1rem;
  transition:background .15s ease,color .15s ease,transform .1s ease;
}
.study-timer__action:hover{background:rgba(255,255,255,.12); color:#fff}
.study-timer__action:active{transform:scale(.95)}
.study-timer__action--danger:hover{background:rgba(239,68,68,.2); color:#fca5a5}

/* ---------- Modal ---------- */
.study-timer__modal{
  position:fixed; inset:0; z-index:1050;
  display:flex; align-items:center; justify-content:center; padding:16px;
  background:rgba(0,0,0,.6); backdrop-filter:blur(4px);
  animation:st-fade .15s ease;
}
.study-timer__modal[hidden]{display:none}
@keyframes st-fade{from{opacity:0}to{opacity:1}}
.study-timer__modal-card{
  width:100%; max-width:440px; background:#171725;
  border:1px solid #252538; border-radius:16px;
  box-shadow:0 20px 60px rgba(0,0,0,.6); color:#D0D4E8;
  animation:st-slide-up .2s ease;
}
@keyframes st-slide-up{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.study-timer__modal-header{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 20px; border-bottom:1px solid #252538;
}
.study-timer__modal-title{
  margin:0; font-size:1rem; font-weight:600; color:#fff;
  display:flex; align-items:center; gap:8px;
}
.study-timer__modal-title i{color:#6C63FF}
.study-timer__modal-close{
  display:inline-flex; align-items:center; justify-content:center;
  width:32px; height:32px; border:none; border-radius:8px;
  background:transparent; color:#A0A8C0; cursor:pointer; font-size:1rem;
  transition:background .15s ease,color .15s ease;
}
.study-timer__modal-close:hover{background:rgba(255,255,255,.06); color:#fff}
.study-timer__modal-body{
  padding:20px; display:flex; flex-direction:column; gap:14px;
}
.study-timer__field{display:flex; flex-direction:column; gap:6px}
.study-timer__field label{font-size:.8rem; font-weight:500; color:#D0D4E8}
.study-timer__field select{
  width:100%; padding:10px 12px;
  background:rgba(255,255,255,.03); border:1px solid #252538;
  border-radius:8px; color:#fff; font-size:.9rem; cursor:pointer;
  transition:border-color .15s ease,background .15s ease;
}
.study-timer__field select:focus{
  outline:none; border-color:#6C63FF;
  box-shadow:0 0 0 3px rgba(108,99,255,.15);
}
.study-timer__field select:disabled{opacity:.5; cursor:not-allowed}
.study-timer__modal-footer{
  display:flex; justify-content:flex-end; gap:8px;
  padding:14px 20px; border-top:1px solid #252538;
}
.study-timer__btn{
  padding:10px 18px; border:none; border-radius:999px;
  font-weight:600; font-size:.85rem; cursor:pointer;
  display:inline-flex; align-items:center; gap:6px;
  transition:transform .1s ease,background .15s ease;
}
.study-timer__btn--ghost{
  background:transparent; color:#D0D4E8; border:1px solid #252538;
}
.study-timer__btn--ghost:hover{background:rgba(255,255,255,.04); color:#fff}
.study-timer__btn--primary{background:#6C63FF; color:#fff}
.study-timer__btn--primary:hover:not(:disabled){
  background:#5A52D5; transform:translateY(-1px);
}
.study-timer__btn--primary:disabled{opacity:.4; cursor:not-allowed}

/* ---------- Desktop: FAB no canto ---------- */
.study-timer {
  right: 24px;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
}

/* ---------- Mobile (<=640px): FAB circular compacto ---------- */
@media (max-width:640px){
  .study-timer {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }

  /* Estado idle vira um círculo com só o ícone */
  .study-timer__start {
    width: 56px;
    height: 56px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 6px 20px rgba(108,99,255,.5), 0 2px 8px rgba(0,0,0,.5);
    transition: transform .15s ease, box-shadow .15s ease;
  }
  .study-timer__start:hover {
    transform: scale(1.05);
  }
  .study-timer__start:active {
    transform: scale(.95);
  }
  .study-timer__start-label {
    display: none;   /* esconde o texto */
  }
  .study-timer__start-icon {
    width: 100%;
    height: 100%;
    background: transparent;
    font-size: 1.6rem;
  }

  /* Estado ativo: card compacto */
  .study-timer__active {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 1rem;
    max-width: 240px;
    box-shadow: 0 12px 40px rgba(0,0,0,.7);
  }
  .study-timer__meta {
    max-width: none;
    text-align: center;
  }
  .study-timer__subject,
  .study-timer__topic {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
  }
  .study-timer__indicator {
    justify-content: center;
    padding: 8px 12px;
  }
  .study-timer__time {
    font-size: 1.05rem;
  }
  .study-timer__actions {
    justify-content: center;
    margin-left: 0;
    gap: 10px;
  }
  .study-timer__action {
    width: 40px;
    height: 40px;
    font-size: 1.15rem;
  }
}

/* Reserva de espaço para o FAB não cobrir conteúdo */
@media (max-width:640px){
  #main-content {
    padding-bottom: calc(96px + env(safe-area-inset-bottom, 0px)) !important;
  }
}