:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --surface-strong: #eef3f7;
  --text: #121826;
  --muted: #637083;
  --line: #d9e0ea;
  --line-strong: #c5cedb;
  --primary: #0f766e;
  --primary-dark: #0b5853;
  --primary-soft: #dff5f1;
  --blue: #2563eb;
  --green: #15803d;
  --amber: #b45309;
  --red: #b91c1c;
  --shadow-sm: 0 1px 2px rgba(18, 24, 38, .05);
  --shadow: 0 18px 48px rgba(18, 24, 38, .10);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,.88) 0, rgba(243,245,248,.92) 360px),
    var(--bg);
  color: var(--text);
  font-family: "Malgun Gothic", "Apple SD Gothic Neo", "Segoe UI", Arial, sans-serif;
  font-size: 15px;
  letter-spacing: 0;
}

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

.app-shell {
  display: grid;
  grid-template-columns: 278px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  background: #ffffff;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-height: 100vh;
  padding: 24px 18px;
  position: sticky;
  top: 0;
  z-index: 20;
}

.sidebar .brand {
  min-height: 46px;
  padding: 0 6px;
}

.sidebar .brand strong {
  display: block;
  font-size: 16px;
  line-height: 1.35;
}

.side-profile {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 5px;
  padding: 16px;
}

.side-profile small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.side-profile b {
  color: var(--text);
  font-size: 17px;
}

.side-profile span {
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
}

.side-nav {
  display: grid;
  gap: 6px;
}

.side-nav a,
.side-footer a {
  align-items: center;
  border-radius: 7px;
  color: #4b5563;
  display: flex;
  font-size: 14px;
  font-weight: 900;
  min-height: 42px;
  padding: 10px 12px;
}

.side-nav a:hover,
.side-footer a:hover {
  background: var(--surface-strong);
  color: var(--text);
}

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

.side-nav a.active::before {
  background: var(--primary);
  border-radius: 999px;
  content: "";
  height: 18px;
  margin-right: 9px;
  width: 4px;
}

.side-footer {
  border-top: 1px solid var(--line);
  margin-top: auto;
  padding-top: 14px;
}

.topbar {
  align-items: center;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(217, 224, 234, .9);
  display: flex;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
}

.brand {
  align-items: center;
  color: #111827;
  display: inline-flex;
  font-weight: 900;
  gap: 10px;
}

.brand span {
  align-items: center;
  background: #111827;
  border-radius: 7px;
  color: #fff;
  display: inline-flex;
  font-size: 13px;
  height: 34px;
  justify-content: center;
  letter-spacing: .02em;
  min-width: 48px;
  padding: 0 10px;
}

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

.topbar nav a,
.topbar nav b {
  border-radius: 7px;
  color: var(--muted);
  display: inline-flex;
  font-size: 14px;
  font-weight: 800;
  min-height: 36px;
  padding: 8px 11px;
}

.topbar nav a:hover {
  background: var(--surface-strong);
  color: var(--text);
}

.page {
  min-width: 0;
  padding: 38px 38px 72px;
  width: 100%;
}

h1,
h2,
h3 {
  color: #111827;
  letter-spacing: 0;
  margin-top: 0;
}

h1 {
  font-size: 36px;
  line-height: 1.22;
  margin-bottom: 12px;
}

h2 {
  font-size: 20px;
  line-height: 1.35;
  margin-bottom: 14px;
}

h3 {
  font-size: 16px;
}

p,
.muted,
.stat span {
  color: var(--muted);
  line-height: 1.68;
}

.eyebrow {
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.hero {
  align-items: center;
  display: grid;
  gap: 36px;
  grid-template-columns: minmax(0, 1.25fr) 360px;
  min-height: calc(100vh - 160px);
}

.landing-hero {
  align-items: end;
  background:
    linear-gradient(90deg, rgba(10, 18, 32, .92) 0%, rgba(10, 18, 32, .76) 42%, rgba(10, 18, 32, .22) 100%),
    url("/static/landing-dashboard.png") center right / cover no-repeat;
  border: 1px solid rgba(217, 224, 234, .9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: calc(100vh - 118px);
  overflow: hidden;
  padding: 72px;
  position: relative;
}

.landing-hero::after {
  background: rgba(255, 255, 255, .08);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.landing-hero-content,
.landing-proof {
  position: relative;
  z-index: 1;
}

.landing-hero-content {
  max-width: 760px;
}

.landing-hero h1 {
  color: #fff;
  font-size: 58px;
  line-height: 1.12;
  margin-bottom: 14px;
}

.landing-lead {
  color: #ccfbf1;
  font-size: 29px;
  font-weight: 900;
  line-height: 1.34;
  margin: 0 0 18px;
}

.landing-copy {
  color: rgba(255, 255, 255, .84);
  font-size: 17px;
  max-width: 650px;
}

.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button.light {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(255, 255, 255, .28);
  color: #fff;
}

.button.light:hover {
  background: rgba(255, 255, 255, .2);
  border-color: rgba(255, 255, 255, .42);
}

.landing-proof {
  align-self: stretch;
  border-top: 1px solid rgba(255, 255, 255, .22);
  color: rgba(255, 255, 255, .78);
  display: flex;
  flex-wrap: wrap;
  font-size: 14px;
  font-weight: 900;
  gap: 18px;
  margin-top: 56px;
  padding-top: 22px;
}

.landing-proof span + span {
  border-left: 1px solid rgba(255, 255, 255, .24);
  padding-left: 18px;
}

.panel,
.card,
.stat {
  background: rgba(255, 255, 255, .96);
  border: 1px solid rgba(217, 224, 234, .96);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.panel,
.card {
  padding: 24px;
}

.panel {
  overflow-x: auto;
}

.card:hover,
.stat:hover,
.panel:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

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

.auth {
  align-items: start;
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1fr) 390px;
  margin: 52px auto;
  max-width: 980px;
}

.wide {
  margin: 0 auto;
  max-width: 980px;
}

.head {
  align-items: end;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin-bottom: 26px;
}

.head > div:last-child {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.stats {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  margin-bottom: 22px;
}

.stat {
  padding: 20px;
  position: relative;
}

.stat::before {
  background: var(--primary);
  border-radius: 999px;
  content: "";
  height: 4px;
  left: 20px;
  position: absolute;
  top: 16px;
  width: 28px;
}

.stat b {
  display: block;
  font-size: 31px;
  line-height: 1;
  margin-top: 12px;
}

.button {
  align-items: center;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  box-shadow: var(--shadow-sm);
  color: #253044;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 14px;
  font-weight: 900;
  justify-content: center;
  min-height: 40px;
  padding: 9px 15px;
  white-space: nowrap;
}

.button:hover {
  background: var(--surface-soft);
  border-color: #aeb8c7;
}

.button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.button.primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.button.small {
  font-size: 13px;
  min-height: 34px;
  padding: 7px 12px;
}

.button.danger {
  background: #fff;
  border-color: #fecaca;
  color: var(--red);
}

.button.danger:hover {
  background: #fef2f2;
}

.form {
  display: grid;
  gap: 16px;
}

.filter-form {
  display: grid;
  gap: 14px;
}

.filter-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

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

.join-panel {
  align-items: center;
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) 180px;
  margin-bottom: 18px;
}

.copy-field {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 2fr) minmax(180px, 1fr);
  margin-top: 14px;
}

.qr-image {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: block;
  height: 180px;
  padding: 10px;
  width: 180px;
}

label {
  color: #2b3547;
  display: grid;
  font-size: 13px;
  font-weight: 900;
  gap: 8px;
}

input,
select,
textarea {
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 7px;
  color: var(--text);
  font: inherit;
  min-height: 42px;
  padding: 10px 12px;
  transition: border-color .15s ease, box-shadow .15s ease;
  width: 100%;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, .14);
  outline: 0;
}

textarea {
  line-height: 1.55;
  min-height: 116px;
  resize: vertical;
}

.check {
  align-items: center;
  display: flex;
}

.check input {
  min-height: auto;
  width: auto;
}

.two,
.grid {
  display: grid;
  gap: 18px;
}

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

.grid {
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}

.progress {
  background: #e2e8f0;
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
}

.progress span {
  background: linear-gradient(90deg, var(--primary), #22c55e);
  display: block;
  height: 100%;
}

table {
  border-collapse: separate;
  border-spacing: 0;
  min-width: 760px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 13px 12px;
  text-align: left;
  vertical-align: middle;
}

th {
  background: var(--surface-soft);
  color: #475569;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .03em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover td {
  background: #fbfdff;
}

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

.checkbox-cell {
  text-align: center;
  width: 42px;
}

.checkbox-cell input {
  cursor: pointer;
  height: 16px;
  width: 16px;
}

.inline {
  align-items: center;
  display: flex;
  gap: 8px;
  min-width: 300px;
}

.inline input {
  min-height: 34px;
}

.inline-action {
  display: inline-flex;
  margin-left: 6px;
}

.status {
  background: var(--primary-soft);
  border: 1px solid rgba(15, 118, 110, .22);
  border-radius: 999px;
  color: var(--primary-dark);
  display: inline-flex;
  font-size: 12px;
  font-weight: 900;
  padding: 5px 10px;
  white-space: nowrap;
}

.callout {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: var(--radius);
  color: #7c2d12;
  font-weight: 800;
  line-height: 1.65;
  margin-bottom: 22px;
  padding: 16px 18px;
}

.flash {
  border: 1px solid transparent;
  border-radius: 7px;
  font-weight: 800;
  margin-bottom: 14px;
  padding: 12px 14px;
}

.flash.success {
  background: #ecfdf3;
  border-color: #bbf7d0;
  color: #166534;
}

.flash.error {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

.card-top {
  align-items: center;
  display: flex;
  gap: 10px;
  justify-content: space-between;
}

.kv {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, 1fr);
}

.kv div {
  background: var(--surface-soft);
  border: 1px solid #edf1f6;
  border-radius: 7px;
  padding: 11px;
}

.kv small {
  color: var(--muted);
  display: block;
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 4px;
}

.kv b {
  font-size: 17px;
}

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

.sheet-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  max-height: 520px;
  overflow: auto;
}

.sheet-table {
  box-shadow: none;
  min-width: 1080px;
}

.sheet-table th {
  background: #eef3f7;
  position: sticky;
  top: 0;
  z-index: 1;
}

.sheet-table th,
.sheet-table td {
  border: 1px solid var(--line);
  padding: 0;
}

.sheet-table th {
  padding: 9px 8px;
  text-align: center;
}

.sheet-table input {
  border: 0;
  border-radius: 0;
  min-height: 35px;
  padding: 7px 8px;
}

.sheet-table input:focus {
  box-shadow: inset 0 0 0 2px var(--primary);
}

.row-number {
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-align: center;
  width: 48px;
}

.learner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.mini-steps {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 16px;
}

.mini-steps span {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  padding: 8px 9px;
  text-align: center;
}

.mini-steps span.done {
  background: var(--primary-soft);
  border-color: rgba(15, 118, 110, .24);
  color: var(--primary-dark);
}

.checklist {
  display: grid;
  gap: 10px;
}

.presentation-note {
  display: grid;
  gap: 12px;
}

.presentation-note div {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 13px;
}

.presentation-note small {
  color: var(--primary);
  display: block;
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 6px;
}

.presentation-note b {
  display: block;
  font-size: 17px;
}

.presentation-note p {
  margin: 0;
}

.learner-card {
  display: flex;
  flex-direction: column;
}

.workflow-map,
.goal-map {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.workflow-map {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.goal-map {
  grid-template-columns: repeat(auto-fit, minmax(135px, 1fr));
}

.workflow-map a,
.workflow-map span,
.goal-map a {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  min-height: 38px;
  padding: 10px;
  text-align: center;
}

.workflow-map a.active,
.goal-map a.active {
  background: #fff7ed;
  border-color: #fed7aa;
  color: #9a3412;
}

.workflow-map a.done,
.goal-map a.done {
  background: var(--primary-soft);
  border-color: rgba(15, 118, 110, .24);
  color: var(--primary-dark);
}

.guided-form {
  scroll-behavior: smooth;
}

.goal-section {
  scroll-margin-top: 24px;
}

.guide-note {
  background: #ecfdf5;
  border: 1px solid #bbf7d0;
  border-left: 4px solid var(--primary);
  border-radius: 7px;
  display: grid;
  gap: 5px;
  padding: 14px 15px;
}

.guide-note b {
  color: var(--primary-dark);
  font-size: 14px;
}

.guide-note p {
  margin: 0;
}

.asset-list {
  display: grid;
  gap: 10px;
}

.asset-item {
  align-items: center;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding: 12px 13px;
}

.asset-item b {
  color: var(--primary-dark);
  text-transform: uppercase;
}

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

.onepage-slide {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: 16px;
  margin-top: 14px;
  padding: 20px;
}

.onepage-slide h3 {
  font-size: 24px;
  margin: 0;
}

.slide-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.slide-grid div {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  min-height: 120px;
  padding: 13px;
}

.slide-grid small {
  color: var(--primary);
  display: block;
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 8px;
}

.slide-grid p {
  margin: 0;
}

.dropzone {
  align-items: center;
  background: var(--surface-soft);
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  gap: 6px;
  justify-items: center;
  min-height: 132px;
  padding: 18px;
  text-align: center;
}

.dropzone:hover,
.dropzone.dragging {
  background: var(--primary-soft);
  border-color: var(--primary);
}

.dropzone.has-file {
  background: #ecfdf5;
  border-color: #86efac;
}

.dropzone input {
  max-width: 320px;
  min-height: auto;
}

.dropzone b {
  color: var(--text);
  font-size: 16px;
}

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

.recorder-panel {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 14px;
  padding: 16px;
}

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

.recorder-panel video {
  background: #111827;
  border-radius: 8px;
  max-height: 360px;
  width: 100%;
}

@media (max-width: 760px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    gap: 14px;
    min-height: auto;
    padding: 16px;
    position: static;
  }

  .side-profile {
    padding: 13px;
  }

  .side-nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .side-nav a,
  .side-footer a {
    flex: 0 0 auto;
    min-height: 38px;
    white-space: nowrap;
  }

  .side-nav a.active::before {
    display: none;
  }

  .side-footer {
    border-top: 0;
    margin-top: 0;
    padding-top: 0;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px 18px;
  }

  .topbar nav {
    justify-content: flex-start;
  }

  .page {
    padding: 22px 16px 42px;
  }

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

  .landing-hero {
    background:
      linear-gradient(180deg, rgba(10, 18, 32, .94) 0%, rgba(10, 18, 32, .82) 54%, rgba(10, 18, 32, .48) 100%),
      url("/static/landing-dashboard.png") center top / cover no-repeat;
    min-height: 680px;
    padding: 42px 24px;
  }

  .landing-hero h1 {
    font-size: 36px;
  }

  .landing-lead {
    font-size: 22px;
  }

  .landing-copy {
    font-size: 15px;
  }

  .landing-proof {
    gap: 10px;
  }

  .landing-proof span {
    width: 100%;
  }

  .landing-proof span + span {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, .2);
    padding-left: 0;
    padding-top: 10px;
  }

  h1 {
    font-size: 29px;
  }

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

  .head > div:last-child {
    justify-content: flex-start;
  }

  .inline {
    min-width: 240px;
  }

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

  .filter-actions {
    justify-content: flex-start;
  }

  .join-panel,
  .copy-field {
    grid-template-columns: 1fr;
  }

  .qr-image {
    height: 150px;
    width: 150px;
  }

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

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