:root {
  --ink: #17335f;
  --muted: #69788f;
  --brand: #4779dc;
  --brand-dark: #315fb8;
  --green: #58a969;
  --yellow: #f2bd45;
  --paper: rgba(255, 255, 255, .94);
  --line: #dce4f0;
  --soft-blue: #eef4ff;
  font-family: "Pretendard", "Malgun Gothic", system-ui, sans-serif;
  color: var(--ink);
}

* { box-sizing: border-box; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
body {
  margin: 0;
  min-height: 100vh;
  background: #fffaf0 url("assets/국어교과서_배경.png") center / cover fixed;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: rgba(255,255,255,.22);
  backdrop-filter: blur(1px);
}
body.home-active .topbar { display: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.topbar {
  height: 76px;
  padding: 0 max(24px, calc((100vw - 1240px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  background:
    linear-gradient(rgba(255,255,255,.82), rgba(255,255,255,.9)),
    url("assets/국어교과서_배경.png") center 12% / cover;
  border-bottom: 1px solid rgba(211,221,236,.9);
  box-shadow: 0 4px 18px rgba(44,70,110,.06);
}
.brand { border: 0; background: none; display: flex; flex: 0 1 auto; min-width: 0; gap: 12px; align-items: center; color: var(--ink); font-size: 24px; font-weight: 900; }
.brand-icon { font-size: 34px; }
.brand-label { display: inline-flex; gap: .28em; white-space: nowrap; }
.brand-label > span { white-space: nowrap; }
.session-bar { display: flex; flex: 0 0 auto; align-items: center; gap: 12px; color: var(--muted); }
.app-shell { width: min(1240px, calc(100% - 32px)); margin: 0 auto; padding: 44px 0 136px; }
.screen { min-height: calc(100vh - 190px); }

.hero-screen { display: grid; grid-template-columns: minmax(570px, 1fr) minmax(520px, .95fr); gap: 42px; align-items: center; }
.hero-copy { padding: 10px 16px 0; align-self: center; }
.home-kicker { display: block; margin-bottom: 12px; color: var(--brand); font-size: 19px; font-weight: 900; }
.eyebrow { display: inline-block; color: var(--brand); font-size: 14px; font-weight: 900; letter-spacing: .03em; margin-bottom: 10px; }
.hero-copy h1 { margin: 0; font-size: clamp(42px, 4.15vw, 64px); line-height: 1.15; letter-spacing: -.06em; white-space: nowrap; }
.hero-copy p { max-width: 590px; color: #53657f; font-size: 20px; line-height: 1.8; }
.role-cards { display: grid; gap: 18px; max-width: 720px; justify-self: end; width: 100%; }
.role-card {
  min-height: 170px; border: 1px solid var(--line); border-radius: 28px; padding: 30px;
  display: grid; grid-template-columns: 74px 1fr; text-align: left; align-items: center;
  background: var(--paper); box-shadow: 0 15px 36px rgba(43,69,109,.12); color: var(--ink);
  transition: transform .18s ease, box-shadow .18s ease;
}
.role-card:hover { transform: translateY(-3px); box-shadow: 0 20px 44px rgba(43,69,109,.17); }
.role-emoji { grid-row: 1 / 3; font-size: 50px; }
.role-card strong { font-size: 24px; }
.role-card small { color: var(--muted); font-size: 15px; }
.teacher-card { border-left: 7px solid var(--brand); }
.student-card { border-left: 7px solid var(--green); }
.spelling-card { border-left: 7px solid #e2b741; }
.teacher-top-menu { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; width: 100%; margin: 0 auto 20px; }
.teacher-top-menu .student-menu-card { min-height: 112px; text-align: center; }
.teacher-top-menu .student-menu-card span { font-size: 26px; }
.teacher-top-menu .student-menu-card strong { font-size: 17px; }

.auth-card {
  width: min(520px, 100%); margin: 20px auto; padding: 38px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 28px;
  box-shadow: 0 18px 50px rgba(42,67,106,.14);
}
.auth-card h2, .dialog-heading h2 { margin: 0 0 25px; font-size: 30px; }
.back-link { border: 0; background: none; color: var(--muted); padding: 0; margin-bottom: 26px; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; background: #edf1f7; padding: 5px; border-radius: 13px; margin-bottom: 24px; }
.tab { border: 0; background: transparent; border-radius: 10px; padding: 12px; color: var(--muted); font-weight: 800; }
.tab.active { background: white; color: var(--brand); box-shadow: 0 3px 10px rgba(46,70,108,.1); }
label { display: grid; gap: 8px; margin: 16px 0; font-weight: 800; color: #314968; }
label:has(.saved-login-picker) { position: relative; }
.saved-login-picker {
  position: absolute; top: calc(100% - 1px); left: 0; right: 0; z-index: 30;
  max-height: 220px; overflow-y: auto; padding: 7px; border: 1px solid var(--line);
  border-radius: 12px; background: white; box-shadow: 0 14px 30px rgba(42,67,106,.18);
}
.saved-login-option {
  width: 100%; display: flex; justify-content: space-between; gap: 10px; padding: 11px 12px;
  border: 0; border-radius: 9px; background: white; color: var(--ink); text-align: left; font-weight: 800;
}
.saved-login-option:hover { background: var(--soft-blue); }
.saved-login-option small { color: var(--muted); font-weight: 600; }
input, textarea, select {
  width: 100%; border: 1px solid #ced9e8; background: white; color: var(--ink);
  border-radius: 13px; padding: 14px 15px; outline: none;
}
textarea { resize: vertical; line-height: 1.7; }
input:focus, textarea:focus, select:focus { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(71,121,220,.13); }
.pin-input { letter-spacing: .5em; font-size: 20px; }
.remember-login { gap: 5px; padding: 10px 2px; }
.remember-login span { display: flex; align-items: center; gap: 9px; }
.remember-login input { width: 18px; height: 18px; margin: 0; }
.remember-login small { color: var(--muted); font-size: 12px; font-weight: 500; }
.button { border: 1px solid transparent; border-radius: 13px; padding: 12px 18px; font-weight: 900; color: var(--ink); background: white; }
.button.primary { color: white; background: var(--brand); }
.button.primary:hover { background: var(--brand-dark); }
.button.secondary { color: white; background: var(--green); }
.button.student { color: white; background: var(--green); }
.button.yellow { color: #654c0c; background: #ffd66d; }
.button.ghost { border-color: var(--line); background: white; }
.button.account-delete { border-color: #e8aaa4; color: #a83d34; background: #fff8f7; }
.button.account-delete:hover { border-color: #c44a3f; background: #fff1ef; }
.button.danger { color: white; background: #c44a3f; }
.button.danger:hover { background: #a83d34; }
.button.wide { width: 100%; padding: 15px; margin-top: 10px; }
.button.small { padding: 8px 12px; font-size: 13px; }
.message { min-height: 22px; color: #bd3b32; font-weight: 700; }
.message.ok { color: #28804a; }
.privacy-note, .help-note { margin-top: 22px; color: var(--muted); font-size: 13px; line-height: 1.6; }

.dashboard-heading { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 22px; }
.dashboard-heading h2 { margin: 0; font-size: 34px; }
.dashboard-grid { display: grid; grid-template-columns: 250px 1fr; gap: 20px; }
#teacherDashboardScreen .dashboard-grid { grid-template-columns: 1fr; }
#teacherDashboardScreen .class-panel { display: none; }
.class-panel, .empty-panel, .class-dashboard, .student-welcome {
  background: var(--paper); border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 12px 34px rgba(42,67,106,.1);
}
.class-panel { padding: 22px; min-height: 520px; }
.class-panel h3 { margin-top: 0; }
.class-list { display: grid; gap: 9px; }
.class-item { border: 1px solid var(--line); border-radius: 13px; background: white; text-align: left; padding: 13px; color: var(--ink); font-weight: 800; }
.class-item small { display: block; color: var(--muted); margin-top: 4px; }
.class-item.active { border-color: var(--brand); background: var(--soft-blue); color: var(--brand-dark); }
.empty-panel { min-height: 520px; display: grid; place-content: center; text-align: center; padding: 30px; }
.empty-illustration { font-size: 64px; }
.empty-panel h3 { margin: 15px 0 5px; font-size: 24px; }
.empty-panel p { color: var(--muted); }
.empty-panel .button { justify-self: center; }
.class-dashboard { padding: 25px; }
.class-summary { display: flex; justify-content: space-between; align-items: center; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.class-summary h3 { margin: 0; font-size: 29px; }
.class-summary p { color: var(--muted); }
.summary-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 20px 0; }
.stat-card { padding: 18px; border: 1px solid transparent; border-radius: 16px; background: var(--soft-blue); color: var(--ink); text-align: left; }
.stat-card:hover { border-color: var(--brand); transform: translateY(-1px); }
.stat-row span { display: block; color: var(--muted); font-size: 14px; }
.stat-row strong { display: block; margin-top: 8px; font-size: 25px; }
.stat-row small { display: block; color: var(--brand); margin-top: 8px; font-weight: 800; }
.content-card { border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: white; }
.assignment-card, .result-card { margin-bottom: 18px; }
.class-learning-card { margin-bottom: 18px; }
.class-learning-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 18px 20px 8px; }
.class-learning-summary > div { padding: 17px; border-radius: 15px; background: var(--soft-blue); }
.class-learning-summary span, .class-learning-summary small { display: block; color: var(--muted); }
.class-learning-summary strong { display: block; margin: 5px 0; font-size: 28px; }
.class-learning-summary small { font-size: 12px; }
.class-learning-chart { display: grid; gap: 13px; padding: 14px 20px 20px; }
.class-learning-bar-row { display: grid; grid-template-columns: minmax(120px, 190px) 1fr; align-items: center; gap: 14px; }
.class-learning-bar-row > strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.class-learning-bars { display: grid; gap: 7px; }
.class-learning-bars > div { display: grid; grid-template-columns: 48px 1fr 52px; align-items: center; gap: 8px; font-size: 11px; }
.class-learning-bars span { color: var(--muted); }
.class-learning-bars i { height: 10px; overflow: hidden; border-radius: 20px; background: #edf1f6; }
.class-learning-bars i b { display: block; height: 100%; border-radius: inherit; background: var(--green); }
.class-learning-bars i.score b { background: var(--brand); }
.class-learning-bars em { color: var(--ink); font-style: normal; font-weight: 900; text-align: right; }
.class-learning-table-wrap { overflow-x: auto; border-top: 1px solid var(--line); }
.class-learning-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.class-learning-table th, .class-learning-table td { padding: 12px 16px; border-bottom: 1px solid #edf1f6; text-align: center; }
.class-learning-table th:first-child, .class-learning-table td:first-child { text-align: left; }
.class-learning-table th { color: var(--muted); background: #fafbfd; font-size: 12px; }
.teacher-action-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.teacher-action-button {
  position: relative; min-height: 76px; border: 0; border-radius: 18px; padding: 18px 22px;
  color: #fff; font-size: 19px; font-weight: 900; box-shadow: 0 9px 22px rgba(42,67,106,.14);
}
.teacher-action-button.assignment-action { background: var(--brand); }
.teacher-action-button.message-action { background: var(--green); }
.teacher-action-button:hover { filter: brightness(.96); transform: translateY(-1px); }
.card-heading { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.card-heading h3 { margin: 0; }
.card-heading span { color: var(--muted); font-size: 13px; }
.roster-empty { padding: 35px 20px; text-align: center; color: var(--muted); }
.roster-row { display: grid; grid-template-columns: 1fr auto; padding: 15px 20px; border-bottom: 1px solid #edf1f6; }
.roster-row:last-child { border-bottom: 0; }
.roster-row span { color: var(--muted); font-size: 13px; }
.coming-card { margin-top: 18px; background: #fff6d9; border: 1px solid #f0d787; border-radius: 16px; padding: 16px; display: grid; gap: 5px; }
.coming-card span { color: #6f622f; font-size: 14px; }
.assignment-empty, .submission-empty { padding: 30px 20px; text-align: center; color: var(--muted); }
.assignment-row { display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: center; padding: 15px 20px; border-bottom: 1px solid #edf1f6; }
.assignment-row:last-child { border-bottom: 0; }
.assignment-row strong, .assignment-row small { display: block; }
.assignment-row small { color: var(--muted); margin-top: 4px; }
.assignment-row-actions { display: flex; gap: 7px; }
.submission-row { display: grid; grid-template-columns: 1fr 1fr 80px 80px; gap: 10px; padding: 14px 20px; border-bottom: 1px solid #edf1f6; align-items: center; }
.submission-row { width: 100%; border-width: 0 0 1px; background: white; color: var(--ink); text-align: left; }
.submission-row:hover { background: var(--soft-blue); }
.submission-row:last-child { border-bottom: 0; }
.submission-row span { color: var(--muted); font-size: 13px; }
.score-pill { justify-self: start; padding: 6px 10px; border-radius: 20px; background: #eaf7ee; color: #237342 !important; font-weight: 900; }

.invite-card { text-align: center; }
.invite-card form { text-align: left; }
.invite-icon { font-size: 55px; display: block; margin-bottom: 15px; }
.invite-by { color: var(--muted); margin-top: -12px; margin-bottom: 25px; }
.student-welcome { display: flex; justify-content: space-between; align-items: center; padding: 30px 36px; }
.student-welcome h2 { font-size: 23px; margin: 0; }
.student-welcome p { color: var(--muted); }
.welcome-book { font-size: 65px; }
.student-empty { margin-top: 20px; min-height: 360px; }
.student-assignment-panel { margin-top: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 24px; overflow: hidden; box-shadow: 0 12px 34px rgba(42,67,106,.1); }
.student-assignment-list { padding: 12px 0 0; display: grid; grid-template-columns: 1fr; gap: 9px; }
.student-assignment { border: 1px solid var(--line); border-radius: 17px; background: white; padding: 14px 16px; text-align: left; color: var(--ink); }
.student-assignment-heading { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.student-assignment-heading strong { font-size: 18px; margin: 0; }
.student-assignment-heading span { color: var(--muted); font-size: 12px; }
.student-assignment-actions { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 10px; }
.student-assignment-actions .button { min-height: 42px; padding: 8px 7px; font-size: 13px; white-space: nowrap; }
.student-result-action { display: grid; gap: 5px; }
.student-result-action small { min-height: 16px; color: var(--muted); font-size: 11px; text-align: center; }
.student-result-action .button:disabled, .student-result-button:disabled { cursor: not-allowed; border-color: #e1e4e9; background: #f1f2f4; color: #a5a9b0; opacity: 1; }
.preview-sentence-list { display: grid; gap: 9px; }
.preview-sentence { display: grid; grid-template-columns: 54px 1fr; gap: 10px; align-items: center; padding: 13px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.preview-speaker { border: 0; border-radius: 12px; background: var(--soft-blue); color: var(--brand); width: 48px; height: 48px; font-size: 22px; }
.preview-speaker.playing { background: var(--brand); color: #fff; box-shadow: 0 0 0 4px rgba(83, 111, 227, .18); transform: scale(.96); }
.preview-sentence p { margin: 0; line-height: 1.7; font-weight: 700; }
.listen-active { background: #fff2c6 !important; color: #6b520c !important; }
.student-dashboard-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(330px, .85fr); gap: 20px; margin-top: 20px; align-items: stretch; }
.student-dashboard-progress { border: 1px solid var(--line); border-radius: 24px; padding: 22px; background: var(--paper); box-shadow: 0 12px 34px rgba(42,67,106,.1); }
.student-dashboard-chart { min-height: 255px; padding-inline: 0; }
.student-dashboard-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 10px 0 14px; }
.student-dashboard-metrics .metric-card { background: #fff; border: 1px solid var(--line); }
.student-dashboard-metrics .metric-card strong { font-size: 30px; color: var(--brand); }
.student-menu-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 0; align-content: start; }
.student-menu-card { min-height: 145px; border: 1px solid var(--line); border-radius: 18px; padding: 18px; background: var(--paper); color: var(--ink); text-align: center; box-shadow: 0 8px 22px rgba(42,67,106,.08); }
.student-menu-card:hover { transform: translateY(-2px); border-color: #aebfe0; box-shadow: 0 12px 26px rgba(42,67,106,.12); }
.student-speech-panel {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  margin-top: 14px; padding: 15px 18px; border: 1px solid var(--line); border-radius: 18px;
  background: rgba(255,255,255,.9); box-shadow: 0 8px 22px rgba(42,67,106,.06);
}
.student-speech-panel strong, .student-speech-panel small { display: block; }
.student-speech-panel strong { color: var(--ink); font-size: 16px; }
.student-speech-panel small { color: var(--muted); margin-top: 4px; }
.student-speech-panel select {
  min-width: 150px; border: 1px solid var(--line); border-radius: 13px; padding: 10px 12px;
  color: var(--ink); background: white; font-weight: 800;
}
.message-menu-card, .message-button-with-badge, .assignment-menu-card { position: relative; }
.message-badge {
  position: absolute; top: 9px; right: 9px; min-width: 23px; height: 23px; padding: 0 6px;
  display: inline-grid; place-items: center; border-radius: 999px; background: #e34e45; color: white;
  font-size: 12px; line-height: 1; font-weight: 900;
}
.message-inbox { display: grid; gap: 9px; max-height: 310px; overflow-y: auto; margin: 12px 0; }
.message-row { padding: 13px 14px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.message-row.incoming { border-left: 5px solid var(--green); }
.message-row.outgoing { border-left: 5px solid var(--brand); background: #f7f9fe; }
.message-row-head { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 7px; }
.message-row-head small { color: var(--muted); }
.message-row p { margin: 0; line-height: 1.55; white-space: pre-wrap; }
.message-empty { padding: 24px; text-align: center; color: var(--muted); }
.dialog-divider { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }
.assignment-create-button { min-width: 104px; line-height: 1.25; white-space: nowrap; }
.student-menu-card span, .student-menu-card strong, .student-menu-card small { display: block; }
.student-menu-card span { font-size: 28px; margin-bottom: 7px; }
.student-menu-card strong { font-size: 18px; }
.student-menu-card small { color: var(--muted); margin-top: 5px; }
.wide-dialog.student-assignment-dialog { width: min(1120px, calc(100% - 28px)); max-width: 1120px; height: min(760px, calc(100dvh - 36px)); max-height: calc(100dvh - 36px); overflow: hidden; box-sizing: border-box; }
.wide-dialog.student-assignment-dialog[open] { display: flex; flex-direction: column; }
.student-assignment-dialog .dialog-heading, .student-assignment-dialog .student-assignment-filters { flex: 0 0 auto; min-width: 0; }
.student-assignment-results { flex: 1 1 auto; min-width: 0; min-height: 0; margin-top: 12px; overflow-y: auto; overflow-x: hidden; overscroll-behavior: contain; scrollbar-gutter: stable; }
.student-assignment-results .student-assignment-list { padding-top: 0; }
.student-assignment, .student-assignment-heading, .student-assignment-actions { min-width: 0; max-width: 100%; box-sizing: border-box; }
.student-assignment-filters { display: grid; grid-template-columns: minmax(370px, auto) minmax(285px, 1fr) auto auto; gap: 8px; align-items: center; margin-top: 14px; }
.student-assignment-filters label { margin: 0; }
.assignment-filter-label { color: var(--ink); font-size: 13px; font-weight: 800; white-space: nowrap; }
.assignment-date-filter { min-width: 0; display: grid; grid-template-columns: auto 130px 18px 130px; gap: 6px; align-items: center; }
.assignment-date-filter input { width: 130px; margin: 0; padding: 9px 7px; }
.assignment-date-filter > span:not(.assignment-filter-label) { text-align: center; color: var(--muted); }
.assignment-title-filter { display: grid; grid-template-columns: auto minmax(160px, 1fr); gap: 7px; align-items: center; }
.assignment-title-filter input { min-width: 0; margin: 0; padding: 9px 10px; }
.assignment-filter-toggle { min-height: 42px; padding: 9px 13px; white-space: nowrap; }
.assignment-filter-toggle.active { border-color: var(--brand); background: var(--soft-blue); color: var(--brand); }
.progress-actions { display: flex; gap: 9px; flex-wrap: wrap; justify-content: flex-end; }
.spelling-screen { min-height: calc(100vh - 120px); }
.spelling-heading {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 18px 24px; background: var(--paper); border: 1px solid var(--line);
  border-radius: 22px 22px 0 0;
}
.spelling-heading .back-link { margin: 0; }
.spelling-heading h2 { margin: 0; font-size: 28px; }
.spelling-frame {
  display: block; width: 100%; height: max(760px, calc(100vh - 210px)); border: 1px solid var(--line);
  border-top: 0; border-radius: 0 0 22px 22px; background: transparent;
}
.dictation-heading { background: var(--paper); border: 1px solid var(--line); border-radius: 24px; padding: 27px; margin-bottom: 18px; }
.dictation-heading h2 { font-size: 32px; margin: 0; }
.dictation-heading p { color: var(--muted); }
.dictation-tools { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; }
.dictation-tools label { width: 220px; margin: 0; }
.dictation-items { display: grid; gap: 12px; }
.dictation-item { display: grid; grid-template-columns: 82px minmax(220px, 1fr) 82px minmax(250px, .75fr); gap: 10px; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: 17px; padding: 13px; }
.dictation-item.correct { border-color: #70bb87; background: #f4fff7; }
.dictation-item.incorrect { border-color: #e49b94; background: #fff8f7; }
.number-speaker { border: 1px solid #cdd9e9; border-radius: 12px; background: white; color: var(--brand); padding: 13px 8px; font-weight: 900; }
.answer-result { min-height: 49px; display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; line-height: 1.45; }
.answer-result strong { flex: 0 0 auto; font-size: 15px; }
.answer-result.ok strong { color: #27804a; }
.answer-result.no strong { color: #c13e34; }
.confirm-answer:disabled, .dictation-answer:disabled { opacity: .72; }
.submit-bar { margin: 18px 0; display: flex; justify-content: space-between; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: 17px; padding: 15px 18px; }
.dictation-summary { border-radius: 20px; padding: 22px; background: #eaf7ee; border: 1px solid #bfe1ca; font-size: 18px; font-weight: 800; display: flex; align-items: center; justify-content: space-between; gap: 15px; }

dialog { width: min(520px, calc(100% - 28px)); border: 0; border-radius: 24px; padding: 30px; color: var(--ink); box-shadow: 0 25px 80px rgba(24,48,85,.28); }
.wide-dialog { width: min(900px, calc(100% - 28px)); max-height: 88vh; overflow: auto; }
dialog::backdrop { background: rgba(25,45,75,.38); backdrop-filter: blur(3px); }
.dialog-heading { display: flex; justify-content: space-between; gap: 15px; }
.icon-button { border: 0; background: #eef2f7; width: 38px; height: 38px; border-radius: 50%; font-size: 25px; }
.code-field { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.invite-link-box { padding: 15px; border-radius: 12px; background: #f3f6fb; color: #3e5c85; overflow-wrap: anywhere; margin: 20px 0; }
.manager-list, .assignment-picker { display: grid; gap: 10px; }
.manager-row, .picker-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 14px; }
.manager-row small, .picker-row small { display: block; color: var(--muted); margin-top: 4px; }
.assignment-manager-list { display: grid; gap: 11px; }
.assignment-manager-row { padding: 14px; border: 1px solid var(--line); border-radius: 15px; }
.assignment-manager-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.assignment-manager-heading small { display: block; margin-top: 4px; color: var(--muted); }
.assignment-roster-actions { display: flex; gap: 8px; margin-top: 12px; }
.assignment-roster-button { min-width: 116px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--ink); font-weight: 900; }
.assignment-roster-button b { display: inline-grid; min-width: 24px; height: 24px; margin-left: 4px; place-items: center; border-radius: 20px; background: #eaf7ee; color: #237342; }
.assignment-roster-button.missing b { background: #fff0ed; color: #b4483d; }
.assignment-roster-button.active { border-color: var(--brand); background: var(--soft-blue); }
.assignment-roster-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 7px; margin-top: 11px; padding: 11px; border-radius: 12px; background: #f7f9fc; }
.assignment-student-name { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-width: 0; padding: 10px 11px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); font-weight: 900; text-align: left; }
button.assignment-student-name:hover { border-color: var(--brand); }
.assignment-student-name span { color: var(--muted); font-size: 11px; font-weight: 700; }
.assignment-student-name.missing { color: var(--muted); }
.assignment-roster-empty { grid-column: 1 / -1; padding: 8px; color: var(--muted); text-align: center; }
.assignment-result-back { margin-bottom: 16px; }
.row-actions, .dialog-actions { display: flex; gap: 9px; flex-wrap: wrap; justify-content: flex-end; }
.dialog-intro { margin: -10px 0 18px; padding: 13px 15px; border-radius: 13px; background: var(--soft-blue); color: var(--muted); line-height: 1.55; }
.message-card { margin-bottom: 18px; }
.recipient-field { width: 100%; border: 1px solid #ced9e8; border-radius: 13px; padding: 14px 15px; background: white; color: var(--muted); text-align: left; }
.recipient-list { max-height: 230px; overflow: auto; border: 1px solid var(--line); border-radius: 13px; padding: 8px; }
.recipient-option { display: flex; align-items: center; gap: 10px; padding: 9px; }
.recipient-option input { width: auto; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 16px 0; }
.metric-card { border-radius: 15px; padding: 16px; background: var(--soft-blue); }
.metric-card span, .metric-card strong, .metric-card small { display: block; }
.metric-card span { color: var(--muted); font-size: 13px; }
.metric-card strong { font-size: 24px; margin: 7px 0; }
.metric-card small { color: var(--muted); line-height: 1.45; }
.letter-stat-card { grid-column: span 2; background: #f4f7ff; }
.letter-stat > strong { display: block; color: var(--ink); font-size: 15px; }
.letter-stat .rank-list { columns: 2; column-gap: 28px; }
.letter-stat .rank-list li { break-inside: avoid; margin-bottom: 5px; }
.progress-page { background: var(--paper); border: 1px solid var(--line); border-radius: 24px; padding: 28px; }
.progress-heading { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.progress-heading h2 { margin: 0; }
.chart-box { min-height: 220px; padding: 15px; }
.line-chart { width: 100%; height: 210px; overflow: visible; }
.chart-empty { display: grid; place-items: center; min-height: 180px; color: var(--muted); }
.chart-label { font-size: 11px; fill: var(--muted); }
.date-range { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.compact-range { grid-template-columns: 1fr 1fr auto; align-items: end; }
.compact-range label { margin: 0; }
.missing-list { border: 1px solid var(--line); border-radius: 14px; padding: 14px; margin: 12px 0; color: var(--muted); }
.assignment-detail { margin-top: 14px; }
.rank-list { margin: 8px 0 0; padding-left: 20px; color: var(--muted); }
.result-question { display: grid; grid-template-columns: 45px 75px 1fr; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--line); align-items: start; }
.result-question:last-child { border-bottom: 0; }
.result-badge { border-radius: 20px; padding: 5px 9px; text-align: center; font-weight: 900; font-size: 13px; }
.result-badge.ok { background: #eaf7ee; color: #237342; }
.result-badge.no { background: #fff0ee; color: #b33d35; }
.result-question small { display: block; color: var(--muted); margin-top: 4px; line-height: 1.5; }
.result-actions { margin-top: 18px; }
.toast { position: fixed; left: 50%; bottom: 25px; transform: translate(-50%, 20px); padding: 12px 20px; border-radius: 30px; background: #17335f; color: white; opacity: 0; pointer-events: none; transition: .2s; z-index: 20; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.policy-footer {
  width: min(920px, calc(100% - 32px));
  margin: 22px auto 78px;
  padding: 18px 20px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
  border: 1px solid rgba(211,221,236,.9);
  border-radius: 20px;
  background:
    linear-gradient(rgba(255,255,255,.82), rgba(255,255,255,.91)),
    url("assets/국어교과서_배경.png") center 88% / cover;
  box-shadow: 0 8px 24px rgba(44,70,110,.08);
}
.policy-footer a { color: #3f6ec8; font-weight: 800; }
.policy-footer span::before { content: "·"; margin-right: 12px; }

@media (max-width: 820px) {
  .topbar { height: 72px; padding: 0 11px; gap: 7px; }
  .brand { gap: 7px; font-size: clamp(14px, 4vw, 18px); }
  .brand-icon { flex: 0 0 auto; font-size: 25px; }
  .session-bar { gap: 6px; }
  .session-bar .button { padding: 8px 9px; }
  .session-bar #sessionLabel { display: none; }
  .app-shell { width: min(100% - 22px, 680px); padding-top: 22px; }
  .hero-screen { grid-template-columns: 1fr; gap: 10px; }
  .hero-copy { padding: 30px 6px 14px; text-align: left; }
  .hero-copy h1 { font-size: 39px; }
  .hero-copy p { font-size: 17px; }
  .role-card { min-height: 135px; padding: 22px; grid-template-columns: 58px 1fr; }
  .role-emoji { font-size: 39px; }
  .role-card strong { font-size: 20px; }
  .home-kicker { font-size: 16px; margin-bottom: 8px; }
  .hero-screen { align-content: center; }
  .teacher-top-menu { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
  .teacher-top-menu .student-menu-card { min-height: 100px; padding: 12px 6px; }
  .teacher-top-menu .student-menu-card span { font-size: 23px; }
  .teacher-top-menu .student-menu-card strong { font-size: 14px; line-height: 1.35; }
  .policy-footer span::before { content: ""; margin: 0; }
  .auth-card { padding: 27px 22px; }
  .dashboard-heading { align-items: center; }
  .dashboard-heading h2 { font-size: 26px; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .class-panel { min-height: auto; }
  .class-list { display: flex; overflow-x: auto; }
  .class-item { min-width: 150px; }
  .class-summary { align-items: flex-start; gap: 15px; flex-direction: column; }
  .summary-actions { justify-content: flex-start; }
  .stat-row { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
  .stat-card { padding: 12px 9px; min-width: 0; }
  .stat-row span { font-size: 11px; white-space: nowrap; }
  .stat-row strong { font-size: 20px; }
  .stat-row small { display: none; }
  .teacher-action-row { gap: 9px; }
  .teacher-action-button { min-height: 64px; padding: 14px 10px; font-size: 17px; }
  .submission-row { grid-template-columns: 1fr 70px; }
  .submission-row span:nth-child(2), .submission-row span:last-child { display: none; }
  .student-welcome { padding: 25px; }
  .welcome-book { display: none; }
  .student-dashboard-layout { grid-template-columns: 1fr; }
  .student-dashboard-chart { min-height: 220px; }
  .student-menu-card { min-height: 118px; padding: 14px 10px; }
  .student-assignment-filters { grid-template-columns: 1fr 1fr; }
  .assignment-date-filter, .assignment-title-filter { grid-column: 1 / -1; }
  .student-assignment-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .student-result-action small { min-height: 0; }
  .dictation-tools { align-items: stretch; flex-direction: column; }
  .dictation-tools label { width: 100%; }
  .dictation-item { grid-template-columns: 72px 1fr 72px; }
  .answer-result { grid-column: 2 / 4; padding: 2px 4px 8px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .letter-stat .rank-list { columns: 1; }
  .compact-range, .date-range { grid-template-columns: 1fr; }
  .manager-row { align-items: flex-start; flex-direction: column; }
  .progress-heading { align-items: flex-start; flex-direction: column; }
  .progress-actions { width: 100%; justify-content: flex-start; }
  .student-menu-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .student-speech-panel { align-items: stretch; flex-direction: column; }
  .student-speech-panel select { width: 100%; }
  .spelling-heading { padding: 15px 16px; }
  .spelling-heading h2 { font-size: 22px; }
  .spelling-frame { height: calc(100vh - 165px); min-height: 690px; }
  .result-question { grid-template-columns: 35px 65px 1fr; }
}
.progress-student-heading { display: flex; align-items: center; flex-wrap: nowrap; gap: 10px; min-width: 0; }
.progress-student-title {
  flex: 0 0 auto;
  color: var(--brand);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  letter-spacing: .01em;
}
.progress-student-heading select {
  width: auto;
  min-width: 126px;
  max-width: min(42vw, 190px);
  min-height: 44px;
  padding: 7px 34px 7px 12px;
  border: 1.5px solid rgba(71, 121, 220, .32);
  border-radius: 10px;
  background-color: rgba(71, 121, 220, 0.08);
  color: var(--ink);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  cursor: pointer;
}
.progress-student-heading select:hover,
.progress-student-heading select:focus-visible { background-color: rgba(71, 121, 220, 0.14); outline: 3px solid rgba(71, 121, 220, 0.2); outline-offset: 2px; }
.news-center-button { position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 5px; white-space: nowrap; border-color: rgba(71, 121, 220, .28); color: var(--brand-dark); background: #fff; }
.news-center-label { display: grid; gap: 0; line-height: 1.08; text-align: center; }
.news-center-label > span { display: block; white-space: nowrap; }
.news-center-dot { position: absolute; top: 6px; left: 24px; width: 8px; height: 8px; border: 2px solid #fff; border-radius: 50%; background: #ed6559; }
.news-center-drawer { position: fixed; z-index: 80; top: calc(74px + env(safe-area-inset-top)); right: 20px; width: min(410px, calc(100vw - 28px)); max-width: calc(100vw - 28px); max-height: calc(100dvh - 92px - env(safe-area-inset-bottom)); overflow-y: auto; overflow-x: hidden; box-sizing: border-box; border: 1px solid var(--line); border-radius: 22px; background: #fff; color: var(--ink); box-shadow: 0 22px 60px rgba(27, 52, 89, .24); }
.news-center-drawer *, .news-center-panel, .news-announcement, .teacher-inquiry, .support-inquiry-form { min-width: 0; max-width: 100%; box-sizing: border-box; }
.news-announcement strong, .news-announcement p, .teacher-inquiry p, .teacher-inquiry-reply, .news-center-privacy { overflow-wrap: anywhere; word-break: break-word; }
.news-announcement-top, .teacher-inquiry-top { flex-wrap: wrap; }
.news-center-heading { display: flex; align-items: center; justify-content: space-between; padding: 19px 19px 14px; }
.news-center-heading h2 { margin: 0; font-size: 21px; }
.news-center-tabs { display: grid; grid-template-columns: 1fr 1fr; margin: 0 18px; padding: 4px; border-radius: 12px; background: #edf1f7; }
.news-center-tab { min-height: 40px; padding: 8px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); font-weight: 900; }
.news-center-tab.active { background: #fff; color: var(--teacher); box-shadow: 0 2px 8px rgba(34, 63, 103, .09); }
.news-center-panel { padding: 17px 18px 20px; }
.news-announcement-list { display: grid; gap: 10px; }
.news-announcement { padding: 15px; border: 1px solid var(--line); border-radius: 15px; background: #fff; }
.news-announcement.unread { border-color: #bfd0f2; background: #f7faff; }
.news-announcement-top { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; }
.news-announcement-tag { padding: 4px 8px; border-radius: 20px; background: #e9f0ff; color: var(--brand-dark); font-size: 11px; font-weight: 900; }
.news-announcement-scope { color: var(--muted); font-size: 11px; }
.news-announcement-date { margin-left: auto; color: #8a96a8; font-size: 11px; }
.news-announcement strong { display: block; font-size: 15px; }
.news-announcement p { margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; white-space: pre-wrap; }
.news-center-more { width: 100%; margin-top: 10px; padding: 11px; border: 1px solid var(--line); border-radius: 11px; background: #fff; color: var(--teacher); font-weight: 900; }
.news-empty { padding: 28px 14px; border: 1px dashed var(--line); border-radius: 14px; color: var(--muted); text-align: center; }
.support-inquiry-form h3 { margin: 2px 0 6px; font-size: 18px; }
.support-inquiry-form > p { margin: 0 0 13px; color: var(--muted); font-size: 12px; }
.support-inquiry-form label { display: grid; gap: 6px; margin-top: 10px; font-size: 12px; font-weight: 900; }
.support-inquiry-form select, .support-inquiry-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 11px; background: #fff; color: var(--ink); }
.support-inquiry-form textarea { resize: vertical; min-height: 110px; }
.news-center-privacy { margin: 9px 2px 0 !important; color: #8a96a8 !important; font-size: 10px !important; line-height: 1.45; }
.inquiry-history-heading { display: flex; align-items: center; justify-content: space-between; margin-top: 17px; padding-top: 15px; border-top: 1px solid var(--line); }
.inquiry-history-heading h3 { margin: 0; font-size: 16px; }
.inquiry-history-heading span { color: var(--muted); font-size: 11px; }
.teacher-inquiry-list { display: grid; gap: 9px; margin-top: 10px; }
.teacher-inquiry { padding: 13px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.teacher-inquiry.answered { background: #f5fbf6; border-color: #cce6d2; }
.teacher-inquiry-top { display: flex; align-items: center; gap: 7px; margin-bottom: 6px; }
.inquiry-status { padding: 3px 7px; border-radius: 12px; background: #fff0dc; color: #a86b0a; font-size: 10px; font-weight: 900; }
.inquiry-status.answered { background: #e8f6ec; color: #2b7d47; }
.teacher-inquiry time { margin-left: auto; color: #8a96a8; font-size: 10px; }
.teacher-inquiry p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.5; white-space: pre-wrap; }
.teacher-inquiry-reply { margin-top: 9px; padding: 10px; border-radius: 10px; background: #fff; color: var(--ink); font-size: 12px; line-height: 1.5; }
.teacher-inquiry-reply strong { display: block; margin-bottom: 4px; color: var(--teacher); }
.admin-center-entry { display: block; width: calc(100% - 56px) !important; max-width: calc(100% - 56px); margin: 0 28px 18px !important; box-sizing: border-box; }
.admin-center-dialog { width: min(1180px, calc(100% - 24px)); max-width: 1180px; }
.admin-center-dialog .dialog-heading p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.admin-center-grid { display: grid; grid-template-columns: minmax(300px, .85fr) minmax(480px, 1.5fr); gap: 16px; }
.admin-compose-card, .admin-inquiry-card { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: #fbfcfe; }
.admin-compose-card h3, .admin-inquiry-card h3 { margin: 0 0 13px; }
.admin-compose-card form { display: grid; gap: 10px; }
.admin-compose-card label { display: grid; gap: 5px; font-size: 12px; font-weight: 900; }
.admin-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.admin-section-title { margin-top: 22px !important; padding-top: 17px; border-top: 1px solid var(--line); }
.admin-announcement-list { display: grid; gap: 8px; max-height: 250px; overflow: auto; }
.admin-announcement-row { padding: 11px; border: 1px solid var(--line); border-radius: 11px; background: #fff; }
.admin-announcement-row strong { display: block; font-size: 13px; }
.admin-announcement-row small { color: var(--muted); }
.admin-inquiry-heading { display: flex; align-items: center; justify-content: space-between; }
.admin-filters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; margin-bottom: 12px; }
.admin-filters select { min-width: 0; }
.admin-inquiry-layout { display: grid; grid-template-columns: minmax(220px, .8fr) minmax(300px, 1.2fr); min-height: 480px; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #fff; }
.admin-inquiry-list { max-height: 540px; overflow: auto; border-right: 1px solid var(--line); }
.admin-ticket { width: 100%; padding: 14px; border: 0; border-bottom: 1px solid var(--line); background: #fff; color: var(--ink); text-align: left; }
.admin-ticket.active { border-left: 4px solid var(--teacher); padding-left: 10px; background: #f4f8ff; }
.admin-ticket strong { display: block; margin: 6px 0 4px; font-size: 13px; }
.admin-ticket small { color: var(--muted); }
.admin-inquiry-detail { padding: 17px; }
.admin-detail-meta { color: var(--muted); font-size: 11px; line-height: 1.6; }
.admin-detail-message { margin: 14px 0; padding: 14px; border: 1px solid var(--line); border-radius: 12px; white-space: pre-wrap; }
.admin-reply-form { display: grid; gap: 9px; }
.admin-reply-form textarea { min-height: 130px; }

@media (max-width: 820px) {
  .session-bar > span { display: none; }
  .news-center-button { padding-inline: 9px; }
  .news-center-drawer { top: calc(66px + env(safe-area-inset-top)); right: 10px; max-height: calc(100dvh - 78px - env(safe-area-inset-bottom)); }
  .admin-center-grid { grid-template-columns: 1fr; }
  .admin-inquiry-layout { grid-template-columns: 1fr; }
  .admin-inquiry-list { max-height: 260px; border-right: 0; border-bottom: 1px solid var(--line); }
  .class-learning-bar-row { grid-template-columns: 1fr; gap: 7px; }
}

@media (max-width: 560px) {
  .wide-dialog.student-assignment-dialog { width: calc(100% - 12px); height: calc(100dvh - 12px); max-height: calc(100dvh - 12px); padding: 20px 14px; }
  .news-center-button { min-width: 58px; padding: 7px 8px; font-size: 11px; }
  .news-center-icon { font-size: 14px; }
  .news-center-dot { top: 5px; left: 23px; }
  .admin-field-row, .admin-filters { grid-template-columns: 1fr; }
}

@media (max-width: 390px) {
  .topbar { padding-inline: 8px; }
  .brand { font-size: 14px; }
  .brand-icon { font-size: 22px; }
  .session-bar .button { padding-inline: 7px; }
  #deleteAccountButton { font-size: 11px; }
  #logoutButton { min-width: 44px; }
}