:root {
  color-scheme: light;
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-soft: #eef3f8;
  --surface-warm: #fff7ed;
  --ink: #172033;
  --muted: #667085;
  --line: #d9e0ea;
  --line-strong: #b7c4d6;
  --blue: #2563eb;
  --blue-soft: #dbeafe;
  --green: #16805a;
  --green-soft: #dff5ea;
  --coral: #d84d3f;
  --coral-soft: #ffe3df;
  --yellow: #b7791f;
  --yellow-soft: #fff0c2;
  --purple: #6f46c9;
  --purple-soft: #ebe4ff;
  --shadow: 0 20px 50px rgba(23, 32, 51, 0.12);
  --radius: 8px;
  --sidebar: 244px;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  letter-spacing: 0;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 0;
}

.hidden {
  display: none !important;
}

.icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  background: conic-gradient(from 210deg, #2563eb, #16805a, #f2bd4a, #d84d3f, #2563eb);
  color: white;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.24);
}

.brand-mark svg {
  width: 24px;
  height: 24px;
}

.btn,
.icon-btn,
.chip,
.tab-btn {
  min-height: 40px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.btn {
  padding: 0 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
}

.btn:hover,
.icon-btn:hover,
.tab-btn:hover {
  border-color: var(--line-strong);
  background: var(--surface-soft);
}

.btn.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}

.btn.primary:hover {
  background: #1e4fd1;
}

.btn.success {
  background: var(--green);
  border-color: var(--green);
  color: white;
}

.btn.ghost {
  background: transparent;
}

.btn.danger {
  color: var(--coral);
}

.btn.compact {
  min-height: 34px;
  padding: 0 10px;
  font-size: 13px;
}

.icon-btn {
  width: 40px;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}

.icon-btn.active {
  background: var(--blue-soft);
  border-color: #9dbbf8;
  color: var(--blue);
}

.input,
.select,
.textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  outline: none;
}

.input,
.select {
  min-height: 42px;
  padding: 0 12px;
}

.textarea {
  min-height: 92px;
  resize: vertical;
  padding: 11px 12px;
  line-height: 1.5;
}

.input:focus,
.select:focus,
.textarea:focus {
  border-color: #8eb2f6;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.form-grid {
  display: grid;
  gap: 12px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.duration-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(360px, 480px) minmax(0, 1fr);
  background: var(--surface);
}

.auth-panel {
  padding: 46px;
  display: grid;
  align-content: center;
  gap: 24px;
  border-right: 1px solid var(--line);
}

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

.auth-brand strong,
.app-brand strong {
  display: block;
  font-size: 20px;
}

.auth-brand span,
.app-brand span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.auth-title {
  margin: 0;
  font-size: 36px;
  line-height: 1.15;
}

.auth-subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.auth-card {
  display: grid;
  gap: 14px;
}

.role-toggle,
.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.tab-btn {
  min-height: 36px;
  background: transparent;
  color: var(--muted);
  font-weight: 850;
}

.tab-btn.active {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 6px 16px rgba(23, 32, 51, 0.08);
}

.auth-visual {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(22, 128, 90, 0.82)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='900' height='900' viewBox='0 0 900 900'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='.22' stroke-width='2'%3E%3Cpath d='M90 130h210v130H90zM350 130h460v130H350zM90 320h340v190H90zM480 320h330v190H480zM90 570h250v180H90zM390 570h420v180H390z'/%3E%3Cpath d='M135 180h150M135 218h92M390 180h360M390 218h210M132 380h250M132 430h180M530 380h230M530 430h135M130 640h180M430 640h310M430 692h190'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
}

.auth-visual-inner {
  position: absolute;
  inset: auto 44px 44px 44px;
  color: white;
  display: grid;
  gap: 16px;
}

.visual-board {
  max-width: 520px;
  display: grid;
  gap: 10px;
}

.visual-row {
  min-height: 58px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(6px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
}

.visual-dot {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: #f2bd4a;
}

.visual-row strong {
  white-space: nowrap;
}

.status {
  min-height: 20px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
}

.status.ok {
  color: var(--green);
}

.page-status {
  margin: -6px 0 12px;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 18px;
  padding: 18px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
}

.nav {
  display: grid;
  align-content: start;
  gap: 7px;
}

.nav-btn {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  text-align: left;
  cursor: pointer;
  font-weight: 850;
}

.nav-btn:hover,
.nav-btn.active {
  background: var(--surface-soft);
  border-color: var(--line);
  color: var(--ink);
}

.sidebar-footer {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.main {
  min-width: 0;
  padding: 22px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.topbar h1 {
  margin: 0;
  font-size: 26px;
  line-height: 1.15;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
}

.top-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.grid {
  display: grid;
  gap: 14px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 22px rgba(23, 32, 51, 0.05);
}

.card-header {
  min-height: 58px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.card-header h2,
.card-header h3 {
  margin: 0;
  font-size: 17px;
}

.card-body {
  padding: 14px;
}

.metric {
  min-height: 116px;
  display: grid;
  align-content: space-between;
  gap: 8px;
  padding: 16px;
}

.metric-button {
  width: 100%;
  text-align: left;
  color: inherit;
}

.metric-button.active {
  outline: 3px solid rgba(37, 99, 235, 0.16);
  border-color: var(--line-strong);
}

.metric span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 850;
}

.metric strong {
  font-size: 32px;
  line-height: 1;
}

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

.task-list,
.goal-list,
.review-list {
  display: grid;
  gap: 10px;
}

.task-row,
.goal-row,
.child-row {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  display: grid;
  gap: 10px;
  padding: 12px;
}

.admin-row {
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
}

.account-admin-card {
  grid-column: 1 / -1;
}

.admin-actions {
  display: grid;
  grid-template-columns: auto minmax(180px, 240px) auto auto;
  align-items: center;
  gap: 8px;
}

.admin-password-input {
  min-height: 34px;
}

.toggle-line {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.detail-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcff;
  padding: 12px;
}

.compact-header {
  padding: 0 0 10px;
}

.task-row.done {
  background: #f7fbf8;
  border-color: #bde4cb;
}

.task-main {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 10px;
}

.task-title {
  font-weight: 900;
  overflow-wrap: anywhere;
}

.task-meta,
.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  align-items: center;
}

.task-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.badge {
  min-height: 24px;
  border-radius: 999px;
  padding: 3px 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}

.badge.high {
  background: var(--coral-soft);
  color: var(--coral);
}

.badge.medium {
  background: var(--yellow-soft);
  color: var(--yellow);
}

.badge.low {
  background: var(--green-soft);
  color: var(--green);
}

.subject-korean {
  border-left: 4px solid #d84d3f;
}

.subject-english {
  border-left: 4px solid #2563eb;
}

.subject-math {
  border-left: 4px solid #16805a;
}

.subject-social {
  border-left: 4px solid #b7791f;
}

.subject-science {
  border-left: 4px solid #6f46c9;
}

.subject-etc {
  border-left: 4px solid #64748b;
}

.subject-group-list {
  display: grid;
  gap: 12px;
}

.subject-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcff;
  padding: 10px;
  display: grid;
  gap: 8px;
}

.subject-group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--ink);
  font-size: 13px;
}

.subject-group-title strong {
  overflow-wrap: anywhere;
}

.subject-group-items {
  display: grid;
  gap: 8px;
}

.day-column .subject-group-list {
  gap: 8px;
}

.day-column .subject-group {
  padding: 8px;
  background: var(--surface);
}

.day-column .subject-group-title {
  font-size: 12px;
}

.empty {
  min-height: 130px;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  padding: 20px;
}

.planner-grid {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 14px;
}

.week-picker {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
}

.week-picker .input {
  max-width: 160px;
}

.day-board {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 1fr);
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.day-column {
  min-width: 220px;
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcff;
  padding: 8px;
  display: grid;
  align-content: start;
  gap: 8px;
}

.day-title {
  font-weight: 900;
  color: var(--muted);
  font-size: 13px;
}

.mini-task {
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 8px;
  display: grid;
  gap: 5px;
  font-size: 13px;
}

.mini-task.editing {
  border-color: #9dbbf8;
  background: var(--blue-soft);
}

.focus-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.focus-picker .chip {
  min-width: 42px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-weight: 900;
}

.focus-picker .chip.active {
  background: var(--purple-soft);
  border-color: #c6b7fa;
  color: var(--purple);
}

.bottom-nav {
  display: none;
}

@media (max-width: 1120px) {
  .grid.three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .planner-grid,
  .grid.two {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-panel {
    min-height: 100vh;
    padding: 28px 20px;
  }

  .auth-visual {
    display: none;
  }

  .app-shell {
    grid-template-columns: 1fr;
    padding-bottom: 72px;
  }

  .sidebar {
    display: none;
  }

  .main {
    padding: 14px;
  }

  .topbar {
    align-items: flex-start;
  }

  .topbar h1 {
    font-size: 22px;
  }

  .top-actions {
    width: auto;
  }

  .form-row,
  .grid.three {
    grid-template-columns: 1fr;
  }

  .admin-actions {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .toggle-line {
    justify-content: flex-start;
  }

  .bottom-nav {
    position: fixed;
    inset: auto 0 0 0;
    height: 66px;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 4px;
    padding: 6px;
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
    z-index: 20;
  }

  .bottom-nav .nav-btn {
    min-height: 52px;
    padding: 0 4px;
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 2px;
    font-size: 11px;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .auth-title {
    font-size: 30px;
  }

  .task-main {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .task-main .badge {
    grid-column: 2;
    justify-self: start;
  }
}