:root {
  --ink: #111426;
  --muted: #6f778c;
  --paper: #f5f7fc;
  --white: #ffffff;
  --line: #e1e5ef;
  --blue: #3157f6;
  --blue-dark: #203fc5;
  --blue-soft: #e9edff;
  --green: #20a078;
  --green-soft: #e7f7f1;
  --violet: #704bd7;
  --violet-soft: #f0ebff;
  --orange: #e58a35;
  --orange-soft: #fff1e5;
  --red: #e45f70;
  --sidebar-width: 260px;
  --shadow: 0 18px 45px rgba(29, 42, 103, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

body.sidebar-visible {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 18px;
  color: #fff;
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-160%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(49, 87, 246, 0.3);
  outline-offset: 3px;
}

.dashboard-shell {
  min-height: 100vh;
}

/* Sidebar */

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 200;
  width: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  padding: 26px 20px 20px;
  overflow-y: auto;
  background: #fff;
  border-right: 1px solid var(--line);
}

.sidebar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 23px;
  font-weight: 850;
  letter-spacing: -0.9px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(49, 87, 246, 0.24);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -2px;
  transform: rotate(-4deg);
}

.sidebar-close,
.sidebar-open {
  display: none;
}

.side-nav {
  display: grid;
  gap: 5px;
}

.side-nav > p {
  margin: 0 11px 12px;
  color: #a0a6b7;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 1.4px;
}

.side-nav a {
  min-height: 48px;
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  color: #656d82;
  border-radius: 11px;
  font-size: 12px;
  font-weight: 700;
  transition: color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.side-nav a:hover {
  color: var(--blue);
  background: #f4f6fc;
  transform: translateX(2px);
}

.side-nav a.active {
  color: var(--blue);
  background: var(--blue-soft);
}

.nav-icon {
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  color: #737c96;
  background: #f0f2f7;
  border-radius: 8px;
  font-size: 14px;
}

.side-nav a.active .nav-icon {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 7px 13px rgba(49, 87, 246, 0.2);
}

.side-nav a > b {
  min-width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  color: #858da3;
  background: #f0f2f7;
  border-radius: 7px;
  font-size: 9px;
}

.sidebar-spacer {
  flex: 1;
  min-height: 24px;
}

.sidebar-profile {
  display: grid;
  grid-template-columns: 39px 1fr auto;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 13px 7px 0;
  border-top: 1px solid var(--line);
}

.profile-avatar {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  border-radius: 11px;
  font-size: 13px;
  font-weight: 850;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

a.profile-avatar:hover {
  box-shadow: 0 9px 18px rgba(49, 87, 246, 0.25);
  transform: translateY(-2px);
}

.profile-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.profile-copy strong {
  overflow: hidden;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-copy small {
  color: #9299ab;
  font-size: 9px;
}

.sidebar-profile form {
  margin: 0;
}

.sidebar-profile button {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: #858da0;
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.sidebar-profile button:hover {
  color: var(--blue);
  background: var(--blue-soft);
}

/* Main shell */

.dashboard-main {
  min-width: 0;
  margin-left: var(--sidebar-width);
  padding: 0 38px 35px;
}

.topbar {
  position: relative;
  z-index: 50;
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-bottom: 1px solid var(--line);
}

.topbar-left {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 14px;
}

.topbar-left p {
  margin: 0 0 5px;
  color: #858ca1;
  font-size: 9px;
}

.topbar-left h1 {
  margin: 0;
  overflow: hidden;
  font-size: 20px;
  letter-spacing: -0.8px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.back-dashboard {
  min-height: 39px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 15px;
  color: #596177;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 11px;
  font-size: 9px;
  font-weight: 800;
  transition:
    color 0.18s ease,
    border-color 0.18s ease,
    transform 0.18s ease,
    box-shadow 0.18s ease;
}

.back-dashboard:hover {
  color: var(--blue);
  border-color: #bec9f9;
  box-shadow: 0 8px 18px rgba(49, 87, 246, 0.08);
  transform: translateX(2px);
}

.back-dashboard:focus-visible {
  outline: 3px solid rgba(49, 87, 246, 0.2);
  outline-offset: 2px;
}

a.learning-home-button {
  min-height: 40px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 9px !important;
  box-sizing: border-box !important;
  padding: 0 15px !important;
  color: #3157f6 !important;
  background: #fff !important;
  border: 1px solid #d8def0 !important;
  border-radius: 11px !important;
  box-shadow: 0 7px 16px rgba(49, 87, 246, 0.07) !important;
  font-size: 10px !important;
  font-weight: 850 !important;
  line-height: 1 !important;
  text-decoration: none !important;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.18s ease !important;
}

a.learning-home-button:hover {
  border-color: #aebbf2 !important;
  box-shadow: 0 10px 22px rgba(49, 87, 246, 0.12) !important;
  transform: translateY(-1px) !important;
}

a.learning-home-button:focus-visible {
  outline: 3px solid rgba(49, 87, 246, 0.2) !important;
  outline-offset: 2px !important;
}

.masters-topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.back-dashboard.secondary {
  color: #3157f6;
  background: #eef1ff;
  box-shadow: none;
}

.streak-pill {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 13px;
  color: #6b7287;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 11px;
  font-size: 9px;
}

.streak-pill span {
  color: var(--orange);
  font-size: 10px;
}

.notification-wrap {
  position: relative;
}

.notification-button {
  position: relative;
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
  color: #606a82;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 11px;
  cursor: pointer;
}

.notification-button > span {
  font-size: 18px;
}

.notification-button.urgent {
  color: #fff;
  background: #df4e61;
  border-color: #df4e61;
  box-shadow: 0 8px 20px rgba(223, 78, 97, 0.28);
}

@keyframes notification-shake {
  0%,
  86%,
  100% {
    transform: rotate(0);
  }
  89% {
    transform: rotate(-8deg);
  }
  92% {
    transform: rotate(8deg);
  }
  95% {
    transform: rotate(-5deg);
  }
  98% {
    transform: rotate(4deg);
  }
}

.notification-button.shake {
  animation: notification-shake 2.2s ease-in-out infinite;
}

.notification-button i {
  position: absolute;
  top: -5px;
  right: -5px;
  min-width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  padding: 0 4px;
  color: #fff;
  background: var(--red);
  border: 2px solid var(--paper);
  border-radius: 999px;
  font-size: 9px;
  font-style: normal;
  font-weight: 850;
}

.notification-panel {
  position: absolute;
  top: 49px;
  right: 0;
  width: 310px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 15px;
  box-shadow: 0 22px 50px rgba(29, 42, 103, 0.16);
}

.notification-panel-title {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 15px;
  border-bottom: 1px solid var(--line);
}

.notification-panel-title strong {
  font-size: 11px;
}

.notification-panel-title button {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: #858da1;
  background: transparent;
  border: 0;
  border-radius: 7px;
  cursor: pointer;
}

.notification-panel > a {
  display: grid;
  gap: 5px;
  padding: 14px 15px;
  border-bottom: 1px solid #edf0f5;
  transition: background 0.18s ease;
}

.notification-panel > a:hover {
  background: #f7f8fc;
}

.notification-panel > a.urgent {
  background: #fff3f4;
  border-left: 3px solid #df4e61;
}

.notification-panel > a.urgent b {
  color: #bd3549;
}

.notification-panel > a b {
  font-size: 10px;
}

.notification-panel > a small {
  color: #8a92a6;
  font-size: 9px;
  line-height: 1.5;
}

.notification-panel
  > .notification-inbox-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  background: var(--blue);
  border-bottom: 0;
  font-size: 10px;
  font-weight: 850;
}

.notification-panel
  > .notification-inbox-cta:hover {
  background: var(--blue-dark);
}

.panel-empty {
  margin: 0;
  padding: 22px 15px;
  color: #8c94a7;
  font-size: 9px;
  text-align: center;
}

@media (prefers-reduced-motion: reduce) {
  .notification-button.shake {
    animation: none;
  }
}

/* Cards */

.dashboard-announcements {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.dashboard-announcements > article {
  display: grid;
  grid-template-columns:
    30px minmax(0, 1fr)
    28px;
  align-items: start;
  gap: 11px;
  padding: 13px 16px;
  color: #a82d42;
  background: #fff1f3;
  border: 1px solid #f3c6ce;
  border-radius: 13px;
}

.dashboard-announcements
  > article
  > span {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: #fff;
  background: #df4e61;
  border-radius: 9px;
  font-weight: 900;
}

.dashboard-announcements
  article
  > a {
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.dashboard-announcements
  article
  > button {
  width: 28px;
  height: 28px;
  padding: 0;
  color: #a84b59;
  background: rgba(
    255,
    255,
    255,
    0.75
  );
  border: 1px solid #f0cbd1;
  border-radius: 8px;
  font: inherit;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}

.dashboard-announcements strong {
  font-size: 11px;
}

.dashboard-announcements p {
  margin: 4px 0 0;
  color: #a84b59;
  font-size: 9px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.welcome-row {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(300px, 0.72fr);
  gap: 16px;
  margin-top: 27px;
}

.continue-card,
.today-plan,
.stats-row article,
.activity-card,
.weak-card,
.curriculum-progress,
.wrong-card,
.quick-grid > a {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.continue-card {
  min-height: 360px;
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(310px, 1.08fr);
  overflow: hidden;
  border-radius: 22px;
}

.continue-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 34px;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.course-meta span {
  padding: 6px 9px;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 7px;
  font-size: 9px;
  font-weight: 850;
}

.course-meta small {
  overflow: hidden;
  color: #858da2;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.continue-copy h2 {
  margin: 20px 0 9px;
  font-size: clamp(24px, 2.4vw, 35px);
  letter-spacing: -1.5px;
}

.continue-copy > p {
  min-height: 22px;
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.course-progress {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  margin-top: 27px;
}

.course-progress > div {
  height: 7px;
  overflow: hidden;
  background: #e8ebf2;
  border-radius: 999px;
}

.course-progress > div span {
  width: var(--progress);
  height: 100%;
  display: block;
  background: linear-gradient(90deg, var(--blue), #7890ff);
  border-radius: inherit;
}

.course-progress strong {
  color: var(--blue);
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 14px;
}

.continue-actions {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 24px;
}

.primary-action {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 17px;
  color: #fff;
  background: var(--blue);
  border-radius: 11px;
  box-shadow: 0 10px 20px rgba(49, 87, 246, 0.21);
  font-size: 11px;
  font-weight: 800;
  transition: background 0.18s ease, transform 0.18s ease;
}

.primary-action:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}

.continue-actions small {
  color: #969caf;
  font-size: 9px;
}

.concept-visual {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 25px;
  background-color: #f1f4ff;
  background-image: radial-gradient(#d6dcef 1px, transparent 1px);
  background-size: 18px 18px;
  border-left: 1px solid var(--line);
}

.visual-title {
  align-self: stretch;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: #77809a;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.8px;
}

.visual-title span {
  color: var(--blue);
}

.area-model {
  width: 174px;
  height: 174px;
  display: grid;
  grid-template-columns: 3fr 1fr;
  grid-template-rows: 3fr 1fr;
  gap: 3px;
  margin: 20px 0 17px;
}

.area-model i {
  display: grid;
  place-items: center;
  color: #34467f;
  background: #bdc9fb;
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 13px;
  font-style: normal;
}

.area-model i.primary {
  color: #fff;
  background: var(--blue);
  font-size: 23px;
}

.area-model i.accent {
  color: #574492;
  background: #c8bbed;
}

.formula-preview {
  width: min(100%, 270px);
  min-height: 174px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 15px;
  margin: 20px 0 17px;
  padding: 24px;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid #d9e0fa;
  border-radius: 23px;
  box-shadow: 0 16px 34px rgba(49, 87, 246, 0.08);
  text-align: center;
}

.formula-preview span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 12px;
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 20px;
}

.formula-preview p {
  width: 100%;
  margin: 0;
  color: #4a588a;
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: clamp(11px, 1.05vw, 15px);
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.concept-visual > strong {
  width: 100%;
  color: var(--blue);
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: clamp(10px, 0.95vw, 14px);
  line-height: 1.5;
  text-align: center;
  overflow-wrap: anywhere;
}

.formula-preview mjx-container,
.concept-visual > strong mjx-container {
  max-width: 100%;
  margin: 0 !important;
  overflow-x: auto;
  overflow-y: hidden;
  padding-block: 3px;
}

.formula-preview mjx-container svg,
.concept-visual > strong mjx-container svg {
  max-width: 100%;
  height: auto;
}

/* Today plan */

.today-plan {
  padding: 26px;
  border-radius: 22px;
}

.card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.card-heading p,
.section-title p {
  margin: 0 0 7px;
  color: var(--blue);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 1.25px;
}

.card-heading h2,
.section-title h2 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.7px;
}

.card-heading > a {
  color: var(--blue);
  font-size: 9px;
  font-weight: 800;
}

.card-heading > span {
  padding: 6px 9px;
  color: #777f93;
  background: #f0f2f7;
  border-radius: 8px;
  font-size: 9px;
  font-weight: 800;
}

.plan-ring {
  --plan-progress: 0deg;
  position: relative;
  width: 53px;
  height: 53px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  background: conic-gradient(var(--blue) var(--plan-progress), #e8ebf3 0);
  border-radius: 50%;
}

.plan-ring::before {
  content: "";
  position: absolute;
  inset: 6px;
  background: #fff;
  border-radius: 50%;
}

.plan-ring span {
  position: relative;
  z-index: 1;
  color: var(--blue);
  font-size: 9px;
  font-weight: 850;
}

.plan-list {
  display: grid;
  gap: 8px;
  margin-top: 21px;
}

.plan-task {
  min-height: 62px;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: #f7f8fb;
  border: 1px solid transparent;
  border-radius: 11px;
  transition: border 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
}

.plan-task:hover {
  border-color: #bdc8f8;
  transform: translateX(2px);
}

.plan-task.saving {
  opacity: 0.62;
}

.plan-toggle {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.plan-toggle:disabled {
  cursor: wait;
}

.task-check {
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  color: #fff;
  border: 1px solid #cfd4e1;
  border-radius: 8px;
  font-size: 10px;
}

.plan-task.done .task-check {
  background: var(--green);
  border-color: var(--green);
}

.plan-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.plan-content strong {
  overflow: hidden;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.plan-content small {
  overflow: hidden;
  color: #9198aa;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.plan-status {
  color: var(--blue);
  font-size: 9px;
  font-weight: 800;
}

.plan-task.done .plan-status {
  color: var(--green);
}

.plan-message {
  margin: 16px 0 0;
  color: #7c8499;
  font-size: 9px;
  line-height: 1.6;
}

/* Empty states */

.section-empty {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 7px;
  padding: 24px;
  color: #8b93a7;
  background: #f7f8fb;
  border: 1px dashed #cbd1df;
  border-radius: 13px;
  text-align: center;
}

.section-empty > span {
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  margin-bottom: 3px;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 12px;
  font-size: 19px;
}

.section-empty strong {
  color: #555e74;
  font-size: 11px;
}

.section-empty p {
  margin: 0;
  font-size: 9px;
  line-height: 1.6;
}

.section-empty a {
  margin-top: 8px;
  padding: 10px 13px;
  color: #fff;
  background: var(--blue);
  border-radius: 9px;
  font-size: 9px;
  font-weight: 800;
}

.section-empty.large {
  min-height: 360px;
  grid-column: 1 / -1;
  border: 0;
  border-radius: 0;
}

.section-empty.compact {
  margin-top: 20px;
  padding-block: 28px;
}

.list-empty {
  min-height: 190px;
  margin-top: 18px;
}

.chart-empty {
  min-height: 230px;
  margin-top: 20px;
}

/* Stats */

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 13px;
  margin-top: 17px;
}

.stats-row article {
  min-height: 116px;
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 13px;
  padding: 19px;
  border-radius: 16px;
}

.stat-icon {
  width: 41px;
  height: 41px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 750;
}

.stat-icon.blue {
  color: var(--blue);
  background: var(--blue-soft);
}

.stat-icon.green {
  color: var(--green);
  background: var(--green-soft);
}

.stat-icon.violet {
  color: var(--violet);
  background: var(--violet-soft);
}

.stat-icon.orange {
  color: var(--orange);
  background: var(--orange-soft);
}

.stats-row article > div {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.stats-row small {
  color: #8b92a6;
  font-size: 9px;
}

.stats-row strong {
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 22px;
  line-height: 1;
}

.stats-row strong i {
  margin-left: 3px;
  color: #7f879b;
  font-family: inherit;
  font-size: 9px;
  font-style: normal;
}

.stats-row p {
  margin: 0;
  overflow: hidden;
  color: #999fb0;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stats-row p b {
  color: #697286;
  font-weight: 750;
}

/* Analytics */

.learning-record-section {
  margin-top: 24px;
}

.dashboard-home .dashboard-main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.learning-record-section .activity-card {
  min-height: 320px;
}

.learning-kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin: 20px 0 0;
}

.learning-kpi-grid > div {
  position: relative;
  min-width: 0;
  display: grid;
  align-content: center;
  gap: 7px;
  min-height: 92px;
  padding: 14px 15px;
  overflow: hidden;
  background: #f7f8fc;
  border: 1px solid #eceef5;
  border-radius: 13px;
}

.learning-kpi-grid > div::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, #d842ee, #7654f7 55%, #19c7e9);
}

.learning-kpi-grid dt,
.learning-kpi-grid dd {
  min-width: 0;
  margin: 0;
}

.learning-kpi-grid dt {
  overflow: hidden;
  color: #8a92a7;
  font-size: 9px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.learning-kpi-grid dd {
  display: grid;
  gap: 7px;
}

.learning-kpi-grid dd > strong {
  min-width: 0;
  color: var(--ink);
  font-size: clamp(15px, 1.25vw, 20px);
  font-weight: 900;
  letter-spacing: -0.7px;
  line-height: 1;
  white-space: nowrap;
}

.learning-kpi-grid dd > strong span {
  margin-left: 3px;
  color: #7f879b;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0;
}

.learning-kpi-grid small {
  min-width: 0;
  overflow: hidden;
  color: #a0a6b7;
  font-size: 9px;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.learning-record-section .weekly-chart {
  height: 190px;
  margin-top: 18px;
}

.learning-record-section .chart-empty {
  min-height: 190px;
}

.analysis-grid,
.bottom-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 16px;
  margin-top: 17px;
}

.activity-card,
.weak-card,
.curriculum-progress,
.wrong-card {
  min-width: 0;
  padding: 26px;
  border-radius: 20px;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #8c93a6;
  font-size: 9px;
}

.chart-legend b {
  width: 7px;
  height: 7px;
  background: var(--blue);
  border-radius: 50%;
}

.weekly-chart {
  height: 235px;
  display: grid;
  grid-template-columns: repeat(7, minmax(30px, 1fr));
  gap: clamp(7px, 1.4vw, 18px);
  margin-top: 24px;
  padding: 8px 4px 0;
}

.chart-day {
  min-width: 0;
  display: grid;
  grid-template-rows: 1fr 18px;
  gap: 9px;
  text-align: center;
}

.bar-track {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background-image: linear-gradient(to top, #eef0f5 1px, transparent 1px);
  background-size: 100% 25%;
  border-bottom: 1px solid #d9dde7;
}

.bar-track i {
  position: relative;
  width: min(28px, 68%);
  height: 0;
  display: block;
  background: linear-gradient(180deg, #6c85ff, var(--blue));
  border-radius: 8px 8px 3px 3px;
  transition: height 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.weekly-chart.visible .bar-track i {
  height: var(--height);
}

.bar-track i span {
  position: absolute;
  top: -23px;
  left: 50%;
  padding: 4px 5px;
  color: #fff;
  background: #212944;
  border-radius: 5px;
  font-size: 9px;
  font-style: normal;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(3px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.bar-track i:hover span {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.chart-day small {
  color: #8c94a7;
  font-size: 9px;
}

.chart-day.today small {
  color: var(--blue);
  font-weight: 850;
}

.chart-day.today .bar-track i {
  box-shadow: 0 8px 18px rgba(49, 87, 246, 0.22);
}

/* Weak concepts */

.weak-list {
  display: grid;
  margin-top: 18px;
}

.weak-list > a {
  min-height: 72px;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #e8ebf1;
  transition: transform 0.18s ease;
}

.weak-list > a:last-child {
  border-bottom: 0;
}

.weak-list > a:hover {
  transform: translateX(3px);
}

.weak-rank {
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  color: #768098;
  background: #eff1f6;
  border-radius: 9px;
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 9px;
}

.weak-rank.urgent {
  color: #fff;
  background: var(--red);
}

.weak-list a > div {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.weak-list strong {
  overflow: hidden;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.weak-list small {
  overflow: hidden;
  color: #9097a9;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.weak-list i,
.semester-list i {
  height: 5px;
  display: block;
  overflow: hidden;
  background: #e8ebf2;
  border-radius: 999px;
}

.weak-list i b {
  width: var(--level);
  height: 100%;
  display: block;
  background: var(--blue);
  border-radius: inherit;
}

.weak-list em {
  padding: 6px 8px;
  color: #7d8498;
  background: #f0f2f7;
  border-radius: 7px;
  font-size: 9px;
  font-style: normal;
  font-weight: 750;
}

/* Curriculum */

.semester-list {
  display: grid;
  gap: 2px;
  margin-top: 18px;
}

.semester-list > div {
  min-height: 82px;
  display: grid;
  grid-template-columns: 39px minmax(0, 1fr) 43px;
  align-items: center;
  gap: 13px;
  border-bottom: 1px solid #e8ebf1;
}

.semester-list > div:last-child {
  border-bottom: 0;
}

.semester-badge {
  width: 37px;
  height: 37px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 10px;
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 11px;
}

.semester-badge.muted {
  color: #7f879b;
  background: #edf0f5;
}

.semester-list > div > div {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.semester-list strong {
  font-size: 10px;
}

.semester-list small {
  color: #9097a9;
  font-size: 9px;
}

.semester-list i b {
  width: var(--progress);
  height: 100%;
  display: block;
  background: linear-gradient(90deg, var(--blue), #8297ff);
  border-radius: inherit;
}

.semester-list em {
  justify-self: end;
  color: var(--blue);
  font-family: "SUIT Variable", "Pretendard Variable", Pretendard, sans-serif;
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
}

/* Wrong answers */

.wrong-list {
  display: grid;
  margin-top: 18px;
}

.wrong-list > a {
  min-height: 72px;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #e8ebf1;
  transition: transform 0.18s ease;
}

.wrong-list > a:last-child {
  border-bottom: 0;
}

.wrong-list > a:hover {
  transform: translateX(3px);
}

.wrong-list > a > span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--red);
  background: #fff0f2;
  border-radius: 9px;
  font-size: 9px;
  font-weight: 850;
}

.wrong-list > a > div {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.wrong-list strong {
  overflow: hidden;
  font-size: 10px;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wrong-list small {
  overflow: hidden;
  color: #9299aa;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wrong-list > a > b {
  color: var(--blue);
  font-size: 9px;
}

/* Quick start */

.quick-section {
  margin-top: 31px;
}

.section-title {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
  margin-top: 16px;
}

.quick-grid > a {
  min-height: 88px;
  display: grid;
  grid-template-columns: 41px minmax(0, 1fr) auto;
  align-items: center;
  gap: 13px;
  padding: 17px;
  border-radius: 15px;
  transition: border 0.18s ease, transform 0.18s ease;
}

.quick-grid > a:hover {
  border-color: #b8c4f9;
  transform: translateY(-2px);
}

.quick-icon {
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 11px;
  font-size: 15px;
}

.quick-grid > a > div {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.quick-grid strong {
  font-size: 10px;
}

.quick-grid small {
  overflow: hidden;
  color: #9198aa;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-grid > a > b {
  color: var(--blue);
}

/* Footer */

.dashboard-footer {
  min-height: 85px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 25px;
  margin-top: 26px;
  color: #989eae;
  border-top: 1px solid var(--line);
  font-size: 9px;
}

.dashboard-home .dashboard-footer {
  margin-top: auto;
}

.dashboard-footer p {
  margin: 0;
}

.dashboard-footer div {
  display: flex;
  justify-content: flex-end;
  gap: 15px;
}

.dashboard-footer a:hover {
  color: var(--blue);
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 190;
  background: rgba(12, 16, 33, 0.5);
  backdrop-filter: blur(3px);
}

/* Responsive */

@media (max-width: 1180px) {
  :root {
    --sidebar-width: 230px;
  }

  .dashboard-main {
    padding-inline: 25px;
  }

  .welcome-row {
    grid-template-columns: 1fr;
  }

  .today-plan {
    display: grid;
    grid-template-columns: minmax(190px, 0.45fr) 1fr;
    gap: 20px;
  }

  .today-plan .card-heading,
  .today-plan .plan-message,
  .today-plan .section-empty {
    grid-column: 1;
  }

  .today-plan .plan-list {
    grid-column: 2;
    grid-row: 1 / 4;
    margin-top: 0;
  }

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

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

@media (max-width: 1000px) {
  .analysis-grid,
  .bottom-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .sidebar {
    width: 270px;
    box-shadow: 20px 0 50px rgba(14, 20, 48, 0.16);
    transform: translateX(-105%);
    transition: transform 0.25s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-close {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    color: #6e7589;
    background: #f1f3f8;
    border: 0;
    border-radius: 9px;
    font-size: 19px;
    cursor: pointer;
  }

  .dashboard-main {
    margin-left: 0;
  }

  .sidebar-open {
    width: 39px;
    height: 39px;
    display: grid;
    align-content: center;
    gap: 5px;
    padding: 9px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    cursor: pointer;
  }

  .sidebar-open span {
    height: 2px;
    background: var(--ink);
  }
}

@media (max-width: 700px) {
  .continue-card {
    grid-template-columns: 1fr;
  }

  .concept-visual {
    min-height: 320px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .today-plan {
    display: block;
  }

  .today-plan .plan-list {
    margin-top: 20px;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .quick-grid {
    grid-template-columns: 1fr;
  }

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

  .learning-record-section .activity-card {
    padding: 22px 18px;
  }
}

@media (max-width: 560px) {
  .dashboard-main {
    padding: 0 16px 25px;
  }

  .topbar {
    min-height: 80px;
  }

  .topbar-left h1 {
    max-width: 180px;
    font-size: 16px;
  }

  .streak-pill {
    display: none;
  }

  .notification-panel {
    position: fixed;
    top: 72px;
    right: 16px;
    left: 16px;
    width: auto;
  }

  .learning-record-section {
    margin-top: 18px;
  }

  .learning-kpi-grid > div {
    min-height: 82px;
    padding: 12px;
  }

  .learning-record-section .weekly-chart {
    height: 170px;
  }

  .continue-copy {
    padding: 26px 22px;
  }

  .continue-copy h2 {
    font-size: 27px;
  }

  .course-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .continue-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .today-plan,
  .activity-card,
  .weak-card,
  .curriculum-progress,
  .wrong-card {
    padding: 22px 18px;
  }

  .weekly-chart {
    height: 210px;
    gap: 5px;
  }

  .bar-track i {
    width: min(20px, 70%);
  }

  .weak-list > a {
    grid-template-columns: 30px minmax(0, 1fr);
  }

  .weak-list em {
    display: none;
  }

  .wrong-list > a {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .wrong-list > a > b {
    display: none;
  }

  .dashboard-footer {
    grid-template-columns: 1fr auto;
  }

  .dashboard-footer p,
  .dashboard-footer div a:first-child {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .bar-track i {
    height: var(--height);
  }
}
/* 짧은 답안에서 키보드로 입력하기 어려운 수학 기호를 지원합니다. */
.math-keyboard {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(10, minmax(34px, 1fr));
  gap: 5px;
  margin-top: 8px;
}

.math-keyboard button {
  min-height: 34px;
  padding: 0 4px;
  color: #3d4b78;
  background: #f1f4ff;
  border: 1px solid #dbe2fa;
  border-radius: 8px;
  font: inherit;
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
}

.math-keyboard button:hover,
.math-keyboard button:focus-visible {
  color: #fff;
  background: #3157f6;
  border-color: #3157f6;
}

.usage-plan-section {
  margin-bottom: 22px;
}

.access-renewal-dialog {
  width: min(620px, calc(100vw - 32px));
  padding: 0;
  overflow: hidden;
  color: #f8faff;
  background: #11152c;
  border: 1px solid rgba(127, 148, 255, 0.42);
  border-radius: 26px;
  box-shadow: 0 32px 90px rgba(9, 13, 43, 0.48);
}

.access-renewal-dialog::backdrop {
  background: rgba(8, 12, 31, 0.72);
  backdrop-filter: blur(8px);
}

.access-renewal-dialog__glow {
  position: absolute;
  width: 280px;
  height: 280px;
  top: -150px;
  right: -80px;
  background: radial-gradient(circle, rgba(50, 201, 255, 0.42), transparent 70%);
  pointer-events: none;
}

.access-renewal-dialog__body {
  position: relative;
  padding: 34px;
}

.access-renewal-dialog__body > p {
  margin: 0 0 10px;
  color: #8eeaff;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.access-renewal-dialog__body h2 {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.24;
}

.access-renewal-dialog__body > span,
.access-renewal-dialog__body > small {
  display: block;
  margin-top: 14px;
  color: #bec8eb;
  line-height: 1.7;
}

.access-renewal-preview {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
}

.access-renewal-preview > div {
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) 1.2fr;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(4, 8, 27, 0.42);
  border: 1px solid rgba(179, 194, 255, 0.13);
  border-radius: 14px;
}

.access-renewal-preview dt {
  color: #8996c6;
  font-size: 11px;
  font-weight: 800;
}

.access-renewal-preview dd {
  margin: 0;
  font-size: 12px;
  font-weight: 800;
}

.access-renewal-dialog__actions {
  display: flex;
  gap: 10px;
  margin-top: 26px;
}

.access-renewal-dialog__actions a,
.access-renewal-dialog__actions button {
  flex: 1;
  padding: 14px 16px;
  border-radius: 13px;
  font: inherit;
  font-size: 12px;
  font-weight: 900;
  text-align: center;
  text-decoration: none;
}

.access-renewal-dialog__actions a {
  color: #fff;
  background: linear-gradient(120deg, #a72dde, #207ed7);
}

.access-renewal-dialog__actions button {
  color: #cbd3ef;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  cursor: pointer;
}

@media (max-width: 560px) {
  .access-renewal-dialog__body {
    padding: 26px 20px;
  }

  .access-renewal-preview > div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .access-renewal-dialog__actions {
    flex-direction: column;
  }
}

.usage-plan-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(210px, 0.8fr) minmax(360px, 1.5fr) auto;
  align-items: center;
  gap: 28px;
  padding: 26px 30px;
  color: #f8faff;
  background:
    radial-gradient(circle at 88% 18%, rgba(74, 207, 255, 0.28), transparent 32%),
    linear-gradient(125deg, #111632 0%, #24246c 55%, #3157f6 100%);
  border: 1px solid rgba(128, 151, 255, 0.35);
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(36, 52, 132, 0.16);
}

.usage-plan-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(100deg, transparent 45%, rgba(255, 255, 255, 0.08));
}

.usage-plan-copy,
.usage-plan-metrics,
.usage-plan-card > a {
  position: relative;
  z-index: 1;
}

.usage-plan-copy p {
  margin: 0 0 7px;
  color: #8fe7ff;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.usage-plan-copy h2 {
  margin: 0;
  font-size: clamp(20px, 2vw, 28px);
}

.usage-plan-copy span {
  display: block;
  margin-top: 8px;
  color: #c7d0f6;
  font-size: 12px;
  font-weight: 700;
}

.usage-plan-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(110px, 1fr));
  gap: 12px;
  margin: 0;
}

.usage-plan-metrics > div {
  min-height: 78px;
  padding: 14px 16px;
  background: rgba(6, 10, 31, 0.34);
  border: 1px solid rgba(185, 199, 255, 0.16);
  border-radius: 15px;
}

.usage-plan-metrics dt {
  color: #aeb9e4;
  font-size: 10px;
  font-weight: 800;
}

.usage-plan-metrics dd {
  margin: 7px 0 0;
  font-size: 13px;
  font-weight: 850;
}

.usage-plan-metrics dd strong {
  margin-right: 4px;
  font-size: 26px;
}

.usage-plan-metrics dd small,
.usage-plan-metrics p {
  color: #aeb9e4;
  font-size: 10px;
}

.usage-plan-metrics p {
  margin: 4px 0 0;
}

.usage-plan-metrics .usage-plan-date {
  line-height: 1.45;
}

.usage-plan-card > a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  color: #fff;
  background: rgba(255, 255, 255, 0.11);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 13px;
  font-size: 12px;
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.usage-plan-card--free {
  background:
    radial-gradient(circle at 88% 18%, rgba(167, 89, 255, 0.24), transparent 32%),
    linear-gradient(125deg, #17182d 0%, #31235d 58%, #7251d7 100%);
}

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

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

  .usage-plan-card > a {
    justify-self: start;
  }
}

@media (max-width: 620px) {
  .usage-plan-card {
    padding: 22px 18px;
  }

  .usage-plan-metrics {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .math-keyboard {
    grid-template-columns: repeat(5, minmax(42px, 1fr));
  }
}