/* =========================================================
   StudySpace — cleaned + fixed CSS
   Fixes:
   - Removed invalid empty CSS variables (they break parsing)
   - Added missing --user-write-text + #tab_write override (your JS uses it)
   - Improved modal click behavior + better mobile wrapping
   - Made Today box not overflow on small screens
========================================================= */

:root{
  --bg: #0b0f18;
  --panel: #0f1626;
  --panel2: #131d31;
  --border: rgba(255,255,255,0.08);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.62);
  --accent: #6aa6ff;
  --danger: #ff5d5d;

  /* user overrides (JS sets these; default = empty string means ignore) */
  --user-text: "";
  --user-muted: "";
  --user-gk-text: "";
  --user-test-text: "";
  --user-fc-text: "";
  --user-match-text: "";
  --user-terms-text: "";
  --user-stats-text: "";
  --user-write-text: "";
}

:root[data-theme="light"]{
  --bg: #f6f7fb;
  --panel: #ffffff;
  --panel2: #f2f4fb;
  --border: rgba(10,10,10,0.10);
  --text: rgba(20,20,20,0.92);
  --muted: rgba(20,20,20,0.62);
  --danger: #e54848;
}

*{ box-sizing:border-box; }

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

/* Global overrides if set (JS sets empty string to "unset") */
body{ color: var(--user-text, var(--text)); }
.muted{ color: var(--user-muted, var(--muted)); }

a{
  color: var(--accent);
  text-decoration:none;
}
a:hover{ text-decoration:underline; }

.app{
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 12px;
  margin-bottom: 14px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  cursor:pointer;
  user-select:none;
}

.logoDot{
  width: 14px;
  height: 14px;
  border-radius: 99px;
  background: var(--accent);
  box-shadow: 0 0 0 6px color-mix(in oklab, var(--accent) 18%, transparent);
}

.brandTitle{
  font-weight: 950;
  letter-spacing: 0.2px;
}

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

.topActions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

.view{ display:block; }
.hidden{ display:none !important; }

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 14px 30px rgba(0,0,0,0.20);
}

.card.sub{
  background: color-mix(in oklab, var(--panel) 88%, transparent);
  box-shadow: none;
}

.cardHead{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.cardHead h2,
.cardHead h3{
  margin: 0;
  font-size: 20px;
}

.cardHead h3{ font-size: 18px; }

.muted{ font-size: 13px; }

.row{
  display:flex;
  gap: 10px;
  align-items:center;
  flex-wrap:wrap;
}

.input{
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 70%, transparent);
  color: var(--text);
  outline:none;
}

.input:focus{
  border-color: color-mix(in oklab, var(--accent) 55%, var(--border));
  box-shadow: 0 0 0 6px color-mix(in oklab, var(--accent) 18%, transparent);
}

textarea.input{ resize: vertical; }

.btn{
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 70%, transparent);
  color: var(--text);
  cursor:pointer;
  font-weight: 850;
}

.btn:hover{ filter: brightness(1.05); }
.btn:disabled{ opacity:0.5; cursor:not-allowed; }

.btn.primary{
  background: color-mix(in oklab, var(--accent) 40%, var(--panel2));
  border-color: color-mix(in oklab, var(--accent) 40%, var(--border));
}

.btn.danger{
  background: color-mix(in oklab, var(--danger) 25%, var(--panel2));
  border-color: color-mix(in oklab, var(--danger) 35%, var(--border));
}

.iconBtn{
  border:none;
  background: transparent;
  color: var(--muted);
  cursor:pointer;
  font-weight: 900;
  padding: 6px 8px;
  border-radius: 12px;
}

.iconBtn:hover{
  background: color-mix(in oklab, var(--panel2) 70%, transparent);
  color: var(--text);
}

.pill{
  font-size: 12px;
  font-weight: 900;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 70%, transparent);
}

.list{
  display:flex;
  flex-direction:column;
  gap: 10px;
}

.studyItem{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
}

.studyItem .name{ font-weight: 950; }

.studyItem .meta{
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.studyItem .right{
  display:flex;
  gap: 10px;
  align-items:center;
}

.grid2{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 14px;
  margin-top: 14px;
}

@media (max-width: 980px){
  .grid2{ grid-template-columns: 1fr; }
}

.nowBar{
  display:flex;
  gap:12px;
  align-items:flex-start;
  justify-content:space-between;
  padding: 10px 12px;
  border:1px solid var(--border);
  border-radius: 14px;
  background: color-mix(in oklab, var(--panel2) 55%, transparent);
  margin-bottom: 10px;
  flex-wrap:wrap;
}

.nowTime{
  font-weight: 950;
  font-size: 16px;
  margin-top: 4px;
}

.todayBox{
  max-width: 60%;
  min-width: 260px;
}

@media (max-width: 700px){
  .todayBox{ max-width: 100%; min-width: 0; width: 100%; }
}

.todayReminders{
  font-weight: 800;
  font-size: 13px;
  margin-top: 4px;
  white-space: pre-wrap;
  color: var(--text);
}

/* Tabs */
.tabs{
  display:flex;
  gap: 8px;
  flex-wrap:wrap;
  margin: 12px 0;
}

.tab{
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
  cursor:pointer;
  font-weight: 900;
  color: var(--text);
}

.tab.active{
  background: color-mix(in oklab, var(--accent) 30%, var(--panel2));
  border-color: color-mix(in oklab, var(--accent) 40%, var(--border));
}

.panel{ margin-top: 8px; }

.sep{
  border:none;
  border-top: 1px solid var(--border);
  margin: 12px 0;
  opacity: 0.9;
}

.hint{
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

/* Terms list */
.termRow{
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
}

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

.termQ{ font-weight: 950; }
.termA{ margin-top: 8px; }
.termActions{ display:flex; gap: 8px; }

/* Flashcards */
.flashCard{
  perspective: 1200px;
  width: min(680px, 100%);
  margin: 0 auto;
  padding: 8px 0;
}

.flashInner{
  width: 100%;
  height: 320px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
  cursor: pointer;
}

.flashInner.flipped{ transform: rotateY(180deg); }

.cardFace{
  position:absolute;
  inset: 0;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 70%, transparent);
  box-shadow: 0 18px 40px rgba(0,0,0,0.25);
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding: 22px;
  backface-visibility: hidden;
}

.cardFace.back{ transform: rotateY(180deg); }

.bigText{
  font-size: 24px;
  font-weight: 950;
  line-height: 1.25;
  max-width: 92%;
  word-break: break-word;
}

/* Gimkit */
.gkPrompt{
  font-weight: 950;
  font-size: 18px;
  margin: 8px 0 12px;
}

.gkGrid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 820px){
  .gkGrid{ grid-template-columns: 1fr; }
}

.choice{
  padding: 14px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 70%, transparent);
  font-weight: 950;
  cursor:pointer;
  min-height: 56px;
  color: var(--text);
}

.choice:hover{ filter: brightness(1.05); }

.choice.correct{
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
  box-shadow: 0 0 0 6px color-mix(in oklab, var(--accent) 18%, transparent);
}

.choice.wrong{
  border-color: color-mix(in oklab, var(--danger) 45%, var(--border));
  box-shadow: 0 0 0 6px color-mix(in oklab, var(--danger) 18%, transparent);
}

/* Match */
.matchGrid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 900px){
  .matchGrid{ grid-template-columns: 1fr; }
}

.matchCard{
  border:1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: color-mix(in oklab, var(--panel2) 55%, transparent);
}

.matchDrop{
  border:1px dashed var(--border);
  border-radius: 12px;
  padding: 10px;
  margin-top: 10px;
  min-height: 44px;
  color: var(--muted);
}

.dragAns{
  cursor: grab;
  user-select:none;
}

.dragAns:active{ cursor: grabbing; }

.matchGood{ outline: 2px solid color-mix(in oklab, var(--accent) 70%, transparent); }
.matchBad{ outline: 2px solid color-mix(in oklab, var(--danger) 70%, transparent); }

/* Test */
.testQ{
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
  margin-bottom: 10px;
}

.qText{
  font-weight: 950;
  margin-bottom: 10px;
}

/* Stats */
.statsGrid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.statBox{
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
}

.statBox .big{
  font-weight: 950;
  font-size: 18px;
}

.statBox .small{
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

/* Calendar */
.calendar{ width: 100%; }

.calHead{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom: 10px;
}

.calTitle{ font-weight: 950; }

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

.calGrid{
  display:grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.dow{
  color: var(--muted);
  font-size: 12px;
  text-align:center;
  padding: 4px 0;
}

.day{
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
  color: var(--text);
  padding: 10px;
  cursor:pointer;
  min-height: 56px;
  position:relative;
}

.day:hover{ filter: brightness(1.05); }

.day .num{ font-weight: 900; }

.day.today{
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
}

.dot{
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: var(--accent);
  position:absolute;
  right: 10px;
  bottom: 10px;
}

/* To-do */
.todoItem{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 10px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
}

.todoLeft{
  display:flex;
  gap: 10px;
  align-items:flex-start;
}

.todoText{ font-weight: 900; }

.todoMeta{
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.todoCountdown{
  font-weight: 950;
  color: var(--muted);
}

/* Modals */
.modal{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 18px;
  z-index: 50;
}

.modalCard{
  width: min(720px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

.notifyText{
  white-space: pre-wrap;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 60%, transparent);
  margin: 10px 0 14px;
}

/* Per-tab text overrides (only affect that panel) */
#tab_gimkit, #tab_gimkit *{ color: var(--user-gk-text, inherit); }
#tab_test, #tab_test *{ color: var(--user-test-text, inherit); }
#tab_flashcards, #tab_flashcards *{ color: var(--user-fc-text, inherit); }
#tab_match, #tab_match *{ color: var(--user-match-text, inherit); }
#tab_terms, #tab_terms *{ color: var(--user-terms-text, inherit); }
#tab_stats, #tab_stats *{ color: var(--user-stats-text, inherit); }
#tab_write, #tab_write *{ color: var(--user-write-text, inherit); }