@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;700;900&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:      #F0F4FF;
  --c-card:    #FFFFFF;
  --c-primary: #7C3AED;
  --c-pri-lt:  #EDE9FE;
  --c-success: #10B981;
  --c-danger:  #EF4444;
  --c-warn:    #F59E0B;
  --c-muted:   #64748B;
  --c-border:  #E2E8F0;
  --c-text:    #1E293B;
  --radius:    14px;
  --shadow:    0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.14);
}

body {
  font-family: 'Noto Sans KR', sans-serif;
  background: var(--c-bg); color: var(--c-text); min-height: 100vh;
}

/* ── Header ── */
.site-header {
  background: linear-gradient(135deg, #4C1D95 0%, #7C3AED 60%, #5B21B6 100%);
  color: #fff; padding: 14px 32px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: 0 2px 20px rgba(124,58,237,.4);
}
.site-header h1 { font-size: 1.35rem; font-weight: 900; }
.site-header .tagline { font-size: .8rem; opacity: .7; margin-left: auto; }

/* ── Container ── */
.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 20px; }

/* ── Phase ── */
.phase { display: none; }
.phase.active { display: block; }

/* ── Card ── */
.card {
  background: var(--c-card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 24px 26px; margin-bottom: 18px;
}
.card-title {
  font-size: 1rem; font-weight: 700; color: var(--c-primary);
  margin-bottom: 16px; display: flex; align-items: center; gap: 10px;
}
.step-num {
  background: var(--c-primary); color: #fff;
  border-radius: 50%; width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700; flex-shrink: 0;
}

/* ── Grade grid ── */
.grade-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.grade-btn {
  border: 2px solid var(--c-border); background: #fff; border-radius: 12px;
  padding: 16px 6px; font-family: inherit; font-size: 1.05rem;
  font-weight: 700; cursor: pointer; transition: all .15s; text-align: center; color: var(--c-text);
}
.grade-btn small { display: block; font-size: .68rem; font-weight: 400; opacity: .6; margin-top: 3px; }
.grade-btn:hover, .grade-btn.active { border-color: var(--c-primary); background: var(--c-primary); color: #fff; }

/* ── Semester ── */
.sem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sem-btn {
  border: 2px solid var(--c-border); background: #fff; border-radius: 12px;
  padding: 14px; font-family: inherit; font-size: .95rem;
  font-weight: 700; cursor: pointer; transition: all .15s; color: var(--c-text);
}
.sem-btn:hover, .sem-btn.active { border-color: var(--c-primary); background: var(--c-primary); color: #fff; }

/* ── Subject chips ── */
.subject-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.subject-chip {
  border: 2px solid var(--c-border); background: #fff; border-radius: 50px;
  padding: 7px 18px; font-family: inherit; font-size: .875rem;
  font-weight: 600; cursor: pointer; transition: all .15s; color: var(--c-text);
}
.subject-chip:hover, .subject-chip.active { border-color: var(--c-primary); background: var(--c-primary); color: #fff; }

/* ── Unit checkboxes ── */
.unit-check-list { display: grid; gap: 7px; }
.unit-check-item {
  display: flex; align-items: center; gap: 10px;
  border: 2px solid var(--c-border); background: #fff;
  border-radius: 10px; padding: 10px 14px; cursor: pointer;
  transition: all .15s;
}
.unit-check-item:hover { border-color: var(--c-primary); background: var(--c-pri-lt); }
.unit-check-item.checked { border-color: var(--c-primary); background: var(--c-primary); }
.unit-check-item.checked .unit-check-label { color: #fff; }
.unit-check-box {
  width: 20px; height: 20px; border-radius: 6px;
  border: 2px solid var(--c-border); background: #fff;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: .75rem; font-weight: 900; transition: all .15s;
}
.unit-check-item.checked .unit-check-box { background: rgba(255,255,255,.25); border-color: rgba(255,255,255,.5); color: #fff; }
.unit-check-label { font-size: .88rem; font-weight: 500; color: var(--c-text); transition: color .15s; }
.unit-ctrl-row { display: flex; gap: 8px; margin-bottom: 10px; }
.unit-ctrl-btn {
  border: 1.5px solid var(--c-border); background: #fff;
  border-radius: 8px; padding: 5px 14px; font-family: inherit;
  font-size: .78rem; font-weight: 700; cursor: pointer; color: var(--c-muted);
}
.unit-ctrl-btn:hover { border-color: var(--c-primary); color: var(--c-primary); }
.unit-notice { font-size: .78rem; color: var(--c-muted); margin-top: 8px; }

/* ── Team fields ── */
.team-row { display: flex; gap: 12px; flex-wrap: wrap; }
.team-field {
  display: flex; align-items: center; gap: 8px;
  background: var(--c-bg); border: 2px solid var(--c-border);
  border-radius: 10px; padding: 8px 14px;
}
.team-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.team-input {
  border: none; background: transparent;
  font-family: inherit; font-size: .9rem; font-weight: 700; color: var(--c-text); width: 90px;
}
.team-input:focus { outline: none; }

/* ── Loading ── */
.loading-card { text-align: center; padding: 48px; }
.spinner {
  width: 52px; height: 52px; margin: 0 auto 20px;
  border: 4px solid var(--c-border); border-top-color: var(--c-primary);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-progress-bar-wrap {
  max-width: 360px; height: 8px; background: var(--c-border);
  border-radius: 999px; margin: 16px auto 0; overflow: hidden;
}
.loading-progress-fill {
  height: 100%; background: linear-gradient(90deg, var(--c-primary), #A855F7);
  border-radius: 999px; transition: width .4s ease;
}
.loading-status { font-size: .82rem; color: var(--c-muted); margin-top: 10px; }

/* ── RPG Control Panel ── */
.rpg-ctrl-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 18px; align-items: start;
}

/* Campaign status bar */
.campaign-bar {
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(135deg, #1E1B4B 0%, #2E1065 100%);
  border-radius: 14px; padding: 12px 20px; margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.campaign-bar-icon { font-size: 1.5rem; }
.campaign-bar-info { flex: 1; }
.campaign-bar-title  { font-size: .88rem; font-weight: 700; color: #E0E7FF; }
.campaign-bar-sub    { font-size: .72rem; color: rgba(224,231,255,.55); margin-top: 2px; }
.campaign-bar-phase  {
  background: rgba(167,139,250,.2); color: #C4B5FD;
  border: 1px solid rgba(167,139,250,.4); border-radius: 50px;
  padding: 3px 14px; font-size: .72rem; font-weight: 700;
}

/* Unit progress chips */
.unit-progress-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.unit-chip {
  border-radius: 50px; padding: 3px 12px; font-size: .7rem; font-weight: 700; border: 1.5px solid;
}
.unit-chip.done    { background: rgba(16,185,129,.1); border-color: #10B981; color: #059669; }
.unit-chip.current { background: rgba(124,58,237,.15); border-color: var(--c-primary); color: var(--c-primary); }
.unit-chip.locked  { background: transparent; border-color: var(--c-border); color: var(--c-muted); }
.unit-chip.final   { background: rgba(239,68,68,.1); border-color: #EF4444; color: #DC2626; }

/* Question preview card */
.q-preview {
  background: var(--c-card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px 24px; margin-bottom: 14px;
  min-height: 200px; display: flex; flex-direction: column; gap: 12px;
}
.q-preview-num  { font-size: .75rem; font-weight: 700; color: var(--c-primary); background: var(--c-pri-lt); display: inline-block; padding: 2px 10px; border-radius: 6px; }
.q-preview-text { font-size: 1.1rem; font-weight: 700; line-height: 1.55; flex: 1; }
.q-preview-opts { display: grid; gap: 6px; }
.q-preview-opt {
  display: flex; align-items: center; gap: 10px;
  background: var(--c-bg); border-radius: 8px; padding: 8px 12px;
  font-size: .84rem; font-weight: 500; border: 2px solid transparent;
}
.q-preview-opt.correct { background: #D1FAE5; border-color: var(--c-success); }
.opt-num {
  width: 26px; height: 26px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem; font-weight: 900; flex-shrink: 0;
}
.c0{background:#FEE2E2;color:#DC2626} .c1{background:#DBEAFE;color:#2563EB}
.c2{background:#FEF9C3;color:#CA8A04} .c3{background:#D1FAE5;color:#059669}
.ox-preview { display: flex; gap: 14px; justify-content: center; padding: 12px 0; }
.ox-big {
  width: 80px; height: 80px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; font-weight: 900; transition: all .3s;
}
.ox-big.O{background:#DBEAFE;color:#2563EB} .ox-big.X{background:#FEE2E2;color:#DC2626}
.ox-big.correct{transform:scale(1.12);box-shadow:0 0 0 5px rgba(16,185,129,.3)}
.ox-big.dim{opacity:.2}
.explain-box {
  background: #FFF8E1; border: 1.5px solid #FDE68A;
  border-radius: 9px; padding: 9px 13px;
  font-size: .8rem; color: #78350F; line-height: 1.5;
}

/* Control buttons */
.ctrl-btns { display: flex; gap: 8px; flex-wrap: wrap; }

/* Team correct buttons */
.correct-team-btns { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.team-correct-btn {
  border: 2px solid; border-radius: 10px; padding: 8px 16px;
  font-family: inherit; font-size: .82rem; font-weight: 700;
  cursor: pointer; background: #fff; transition: all .15s;
}
.team-correct-btn:hover { opacity: .8; color: #fff; }
.all-wrong-btn {
  border: 2px solid #EF4444; border-radius: 10px; padding: 8px 16px;
  font-family: inherit; font-size: .82rem; font-weight: 700;
  cursor: pointer; background: #fff; color: #EF4444; transition: all .15s;
}
.all-wrong-btn:hover { background: #EF4444; color: #fff; }

/* Score sidebar */
.score-panel {
  background: var(--c-card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px;
}
.score-panel-hd {
  font-size: .72rem; font-weight: 700; color: var(--c-muted);
  text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px;
}
.score-team {
  display: flex; align-items: center; gap: 8px;
  background: var(--c-bg); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px;
}
.score-dot  { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.score-name { font-weight: 700; flex: 1; font-size: .84rem; }
.score-hp   { font-size: .75rem; color: #059669; }
.score-gold { font-size: .75rem; color: #B45309; margin-top: 2px; }
.score-adj  { display: flex; gap: 4px; }
.adj-btn {
  width: 26px; height: 26px; border-radius: 7px;
  border: 2px solid var(--c-border); background: #fff;
  font-size: .95rem; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .12s; color: var(--c-text);
}
.adj-btn:hover { border-color: var(--c-primary); color: var(--c-primary); }

/* Skill panel */
.skill-panel-hd {
  font-size: .72rem; font-weight: 700; color: var(--c-muted);
  text-transform: uppercase; letter-spacing: .08em; margin: 14px 0 8px;
}
.skill-teacher-btn {
  width: 100%; display: flex; align-items: center; gap: 8px;
  border: 2px solid var(--c-border); border-radius: 10px;
  padding: 8px 12px; font-family: inherit; font-size: .8rem;
  font-weight: 700; cursor: pointer; background: #fff; transition: all .15s;
  margin-bottom: 6px; color: var(--c-text);
}
.skill-teacher-btn:disabled { opacity: .4; cursor: not-allowed; }
.skill-teacher-btn.unlocked:not(:disabled) {
  border-color: var(--c-primary); color: var(--c-primary); background: var(--c-pri-lt);
}
.skill-teacher-btn.active-skill {
  border-color: #F59E0B; color: #92400E; background: #FFFBEB;
  box-shadow: 0 0 0 3px rgba(245,158,11,.2);
}
.skill-threshold-hint { font-size: .68rem; color: var(--c-muted); }

/* Projector button */
.proj-btn {
  width: 100%; margin-top: 14px; padding: 12px;
  background: linear-gradient(135deg, #4C1D95, #7C3AED);
  color: #fff; border: none; border-radius: 12px;
  font-family: inherit; font-size: .9rem; font-weight: 700;
  cursor: pointer; transition: opacity .15s;
}
.proj-btn:hover { opacity: .88; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  border: none; border-radius: 10px; padding: 10px 20px;
  font-family: inherit; font-size: .88rem; font-weight: 700;
  cursor: pointer; transition: all .15s; text-decoration: none;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: #6D28D9; }
.btn-success { background: var(--c-success); color: #fff; }
.btn-success:hover:not(:disabled) { background: #059669; }
.btn-danger  { background: var(--c-danger);  color: #fff; }
.btn-warn    { background: var(--c-warn);    color: #fff; }
.btn-outline { background: #fff; border: 2px solid var(--c-border); color: var(--c-text); }
.btn-outline:hover:not(:disabled) { border-color: var(--c-primary); color: var(--c-primary); }
.btn-lg { padding: 13px 30px; font-size: 1rem; border-radius: 12px; }

/* ── Toast ── */
.toast {
  position: fixed; bottom: 22px; right: 22px;
  background: #1E293B; color: #fff; border-radius: 10px;
  padding: 10px 18px; font-size: .86rem; font-weight: 600;
  transform: translateY(80px); opacity: 0;
  transition: all .28s; z-index: 9999; pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }

@media (max-width: 800px) {
  .grade-grid { grid-template-columns: repeat(3, 1fr); }
  .rpg-ctrl-layout { grid-template-columns: 1fr; }
}