:root{
  --bg: #fafafa;
  --panel: #ffffff;
  --text: #111;
  --muted: #6b6b6b;
  --border: #e6e6e6;
  --shadow: 0 10px 30px rgba(0,0,0,.06);
  --shadow2: 0 6px 18px rgba(0,0,0,.06);
  --radius: 14px;
  --radius2: 10px;
}

*{ box-sizing: border-box; }

html, body{
  margin:0;
  padding:0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Helvetica Neue", Helvetica, sans-serif;
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(233, 135, 135, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 14px 18px;
  display:flex;
  align-items:center;
  justify-content: space-between;
}

.brand{
  display:flex;
  gap:12px;
  align-items:center;
}

.logo{
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow: hidden; /* important */
}

.logo img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}


.brand-title{ font-weight: 650; letter-spacing: .2px; }
.brand-subtitle{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.nav{ display:flex; gap:10px; }

.nav-btn{
  border: 1px solid var(--border);
  background:#eac2c2;
  border-radius: 12px;
  padding: 8px 12px;
  cursor:pointer;
}

.shell{ padding: 22px 18px 40px; max-width: 1200px; margin: 0 auto; }

.grid{
  display:grid;
  grid-template-columns: 360px 1fr;
  gap: 14px;
}

@media (max-width: 980px){
  .grid{ grid-template-columns: 1fr; }
}

.panel{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.panel-header h2{
  margin: 0 0 6px;
  font-size: 18px;
  letter-spacing: .2px;
}
.panel-header p{ margin: 0; }

.panel-footer{
  margin-top: 14px;
  font-size: 12px;
}

.muted{ color: var(--muted); }

.form{ margin-top: 14px; display:flex; flex-direction: column; gap: 10px; }

.label{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.input, .textarea, .select{
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
  outline: none;
}

.textarea{
  min-height: 140px;
  resize: vertical;
  line-height: 1.35;
}

.upload{
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: #e8b2a4;
}
.upload input{ width: 100%; }
.upload-hint{ font-size: 12px; margin-top: 6px; }

.row{ display:flex; gap: 10px; }
.col{ flex: 1; }

.actions{ display:flex; gap: 10px; margin-top: 4px; }

.btn{
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 12px;
  padding: 10px 12px;
  cursor:pointer;
}

.btn.primary{
  background: #111;
  color: #fff;
  border-color: #111;
}

.btn:disabled{
  opacity: .6;
  cursor:not-allowed;
}

.btn.ghost{
  background: #fafafa;
}

.filebtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 6px;
}

.status{
  margin-top: 6px;
  font-size: 13px;
  min-height: 18px;
}

.row-between{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 10px;
}

.mini-actions{
  display:flex;
  gap: 8px;
  flex-wrap: wrap;
}

.divider{
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.study{ margin-top: 8px; }

.progress-wrap{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

/* Progress bar (base style) */
.progress{
  flex:1;
  height: 8px;
  border-radius: 999px;
  background: #f0f0f0;
  overflow:hidden;
  border: 1px solid var(--border);
}
.progress-bar{
  height: 100%;
  width: 0%;
  background: #111;
}

.hidden{ display:none; }

.card-top{
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 10px;
}

/* Base pill style (outside of card if any) */
.pill{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
}

.card-content{
  font-size: 18px;
  line-height: 1.45;
  margin-top: 12px;
  white-space: pre-wrap;
}

.controls, .grade{
  display:flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 12px;
}

.kbd{
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 8px;
  padding: 2px 6px;
  background: #fff;
  font-size: 12px;
}

.library{
  display:flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.deck{
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  display:flex;
  justify-content: space-between;
  gap: 12px;
  background: #fff;
}

.deck-title{
  font-weight: 650;
  margin-bottom: 4px;
}
.deck-meta{ font-size: 12px; color: var(--muted); }

.deck-actions{
  display:flex;
  gap: 8px;
  align-items:center;
  flex-wrap: wrap;
}

/* ============================
   DARK FLASHCARD (ONLY DECK)
   ============================ */

.card{
  border-radius: var(--radius);
  box-shadow: var(--shadow2);
  padding: 16px;
  min-height: 210px;
  display:flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;

  background-color: #0d0d0d;
  color: #ffffff;
  border: 1px solid #2a2a2a;
}

.card-content{
  color: #ffffff;
}

.card .pill{
  background-color: #1a1a1a;
  color: #ffffff;
  border: 1px solid #333333;
}

#tapHint{
  color: #cfcfcf;
}

/* Make study progress bar match dark deck style */
.study .progress{
  background-color: #2a2a2a;
}
.study .progress-bar{
  background-color: #ffffff;
}