:root {
  --ink: #08111f;
  --ink-2: #132033;
  --paper: #f7f8f4;
  --surface: #ffffff;
  --line: #dfe4dc;
  --muted: #647084;
  --green: #a7f05a;
  --blue: #2563eb;
  --teal: #0f766e;
  --rose: #e11d48;
  --shadow: 0 20px 60px rgba(8, 17, 31, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, Arial, sans-serif;
}
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
a { color: inherit; }
.hidden { display: none !important; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -.03em;
}
.brand b { color: var(--blue); }
.mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--green);
  font: 700 12px/1 JetBrains Mono, monospace;
  letter-spacing: 0;
}
.button {
  border: 0;
  border-radius: 8px;
  padding: 12px 16px;
  font-weight: 800;
  font-size: 13px;
}
.button.primary {
  background: var(--ink);
  color: white;
  box-shadow: 0 4px 0 var(--blue);
}
.button.secondary {
  background: transparent;
  color: var(--ink);
}
.button.large { padding: 15px 20px; }
.text-link, .text-button {
  border: 0;
  background: transparent;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}
.eyebrow, .section-kicker, .sidebar-label {
  color: var(--muted);
  font: 700 11px/1.4 JetBrains Mono, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.site-header {
  min-height: 76px;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.top-nav {
  margin-left: auto;
  display: flex;
  gap: 26px;
}
.top-nav a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}
.nav-actions { display: flex; gap: 8px; }

.hero {
  max-width: 1220px;
  margin: 0 auto;
  padding: 82px 24px 76px;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, .78fr);
  gap: 54px;
  align-items: center;
}
.hero h1 {
  max-width: 760px;
  margin: 22px 0;
  font-size: clamp(46px, 7vw, 88px);
  line-height: .98;
  letter-spacing: -.06em;
}
.lead {
  max-width: 650px;
  color: #3f4a5d;
  font-size: 18px;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 34px;
}
.hero-board {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.board-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font: 700 11px JetBrains Mono, monospace;
  text-transform: uppercase;
}
.board-top strong { color: var(--teal); }
.board-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.board-grid article {
  background: #f3f6f0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}
.board-grid .wide { grid-column: 1 / -1; background: var(--ink); color: white; }
.board-grid span, .board-grid small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.board-grid .wide span, .board-grid .wide small { color: #aeb7c7; }
.board-grid b {
  display: block;
  margin: 10px 0 6px;
  font-size: 28px;
  letter-spacing: -.04em;
}
.board-grid .wide b { font-size: 22px; }
.mini-list {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}
.mini-list p {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 0;
  color: #3f4a5d;
  font-size: 13px;
}
.mini-list span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  border: 1px solid var(--ink);
}

.section {
  max-width: 1220px;
  margin: 0 auto;
  padding: 92px 24px;
}
.band {
  max-width: none;
  background: #e9efe4;
  padding-left: max(24px, calc((100vw - 1220px) / 2 + 24px));
  padding-right: max(24px, calc((100vw - 1220px) / 2 + 24px));
}
.section-title {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 36px;
  align-items: end;
  margin-top: 16px;
}
.section h2 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.05;
  letter-spacing: -.05em;
}
.section-title p, .trust-copy p {
  margin: 0;
  color: #4d5868;
  line-height: 1.75;
}
.feature-grid, .steps, .team-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.feature-grid article, .steps article, .team-grid article {
  min-height: 210px;
  padding: 26px;
  background: var(--paper);
}
.feature-grid span, .team-grid span {
  color: var(--blue);
  font: 700 12px JetBrains Mono, monospace;
}
.feature-grid h3, .team-grid h3 {
  margin: 38px 0 10px;
  font-size: 19px;
  letter-spacing: -.03em;
}
.feature-grid p, .steps p, .team-grid p {
  color: #596475;
  font-size: 14px;
  line-height: 1.65;
}
.steps b {
  font-size: 18px;
  letter-spacing: -.03em;
}
.steps { grid-template-columns: repeat(4, 1fr); }
.trust {
  display: grid;
  grid-template-columns: .85fr 1fr;
  gap: 70px;
  border-top: 1px solid var(--line);
}
.trust h2 { margin-top: 18px; }
.trust-copy {
  display: grid;
  gap: 18px;
  align-content: center;
}
.team-grid { grid-template-columns: repeat(3, 1fr); }
.site-footer {
  max-width: 1220px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  gap: 26px;
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.site-footer p { margin-right: auto; }
.site-footer a { color: var(--ink); font-weight: 700; text-decoration: none; }

.auth {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(8, 17, 31, .58);
}
.auth-panel {
  width: min(460px, 100%);
  position: relative;
  background: white;
  border-radius: 8px;
  padding: 38px;
  box-shadow: var(--shadow);
}
.icon-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  background: white;
  border-radius: 50%;
}
.auth h2 {
  margin: 26px 0 6px;
  font-size: 34px;
  letter-spacing: -.05em;
}
.auth p { color: var(--muted); }
form { display: grid; gap: 14px; margin: 24px 0 16px; }
label {
  display: grid;
  gap: 7px;
  color: #263245;
  font-size: 12px;
  font-weight: 800;
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: white;
  color: var(--ink);
  outline-color: var(--blue);
}
.fineprint, .empty {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.application {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 244px 1fr;
  background: #f5f7f2;
}
.sidebar {
  min-height: 100vh;
  padding: 24px 14px;
  display: flex;
  flex-direction: column;
  background: var(--ink);
  color: #eef4ef;
}
.sidebar .mark { background: white; color: var(--ink); }
.sidebar-label { margin: 40px 12px 10px; color: #9da8bb; }
.side-nav, .sidebar-bottom { display: grid; gap: 4px; }
.side-nav button, .sidebar-bottom button {
  border: 0;
  border-radius: 8px;
  padding: 11px 12px;
  background: transparent;
  color: #b9c3d3;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
}
.side-nav button.active, .side-nav button:hover {
  background: #1b2a42;
  color: white;
}
.sidebar-bottom { margin-top: auto; }
.mobilebar { display: none; }
.workspace {
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 40px 44px;
}
.workspace-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 30px;
}
.workspace h1 {
  margin: 8px 0 0;
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: -.05em;
}
.header-actions { display: flex; gap: 10px; }
.icon-button, .avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: white;
  font-weight: 800;
}
.avatar { background: var(--blue); color: white; border-color: var(--blue); }
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.metric, .card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}
.metric label {
  color: var(--muted);
  font: 700 10px JetBrains Mono, monospace;
  text-transform: uppercase;
}
.metric b {
  display: block;
  margin-top: 12px;
  font-size: 30px;
  letter-spacing: -.05em;
}
.metric small { color: var(--muted); font-size: 11px; }
.dashboard-grid, .split {
  display: grid;
  grid-template-columns: 1.18fr .82fr;
  gap: 16px;
  margin-top: 16px;
}
.card h2 {
  margin: 0 0 18px;
  font-size: 17px;
  letter-spacing: -.03em;
}
.view-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  margin-bottom: 20px;
}
.view-head h2 {
  margin: 8px 0 0;
  font-size: 27px;
  letter-spacing: -.05em;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.full { grid-column: 1 / -1; }
.task-row, .note-row {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 13px 0;
  border-top: 1px solid #edf0ea;
}
.task-row:first-of-type, .note-row:first-of-type { border-top: 0; }
.row-grow { flex: 1; min-width: 0; }
.task-row b, .note-row b {
  display: block;
  font-size: 13px;
  overflow-wrap: anywhere;
}
.task-row small, .note-row small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 10px;
}
.done {
  min-width: 54px;
  height: 30px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: white;
  font-size: 11px;
  font-weight: 800;
}
.subject-pill {
  margin-bottom: 8px;
  padding: 10px;
  border-radius: 8px;
  background: #eff6eb;
  font-size: 12px;
  font-weight: 800;
}
.resource-drop {
  border: 1px dashed #9aa6b2;
  border-radius: 8px;
  padding: 18px;
  background: #fbfcfa;
  text-align: center;
}
.resource-drop input { border: 0; padding: 8px; }
.chat-log {
  height: 270px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.chat-toolbar select {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}
.chat-toolbar .text-button {
  white-space: nowrap;
  margin-left: 8px;
}
.chat-toolbar .danger {
  color: #b42318;
}
.bubble {
  max-width: 86%;
  padding: 12px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.bubble.loading {
  opacity: 0.75;
  font-style: italic;
}
.bubble.error {
  border: 1px solid #f3b2aa;
  background: #fff1ef;
  color: #7a271a;
}
.coach { background: #eef3eb; }
.student { background: var(--ink); color: white; align-self: flex-end; }
.chat-form { display: flex; align-items: flex-end; gap: 8px; margin-top: 14px; }
.chat-form textarea {
  flex: 1;
  min-height: 46px;
  max-height: 140px;
  resize: vertical;
}
.quiz-q {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.quiz-q p { font-weight: 800; font-size: 14px; }
.quiz-q label {
  display: flex;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  padding: 4px 0;
}
.quiz-q input { width: auto; }
.insight-score {
  color: var(--blue);
  font-size: 68px;
  font-weight: 800;
  letter-spacing: -.07em;
}
.insight-score small {
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0;
}
.rec-list {
  color: #4d5868;
  font-size: 13px;
  line-height: 1.85;
}
#toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 80;
  max-width: min(420px, calc(100vw - 40px));
  padding: 13px 16px;
  border-radius: 8px;
  background: var(--ink);
  color: white;
  font-size: 13px;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: .2s ease;
}
#toast.show { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .top-nav { display: none; }
  .hero, .section-title, .trust { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
  .hero-board { max-width: 620px; }
  .feature-grid, .steps { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .site-footer { flex-wrap: wrap; }
  .application { display: block; }
  .sidebar { display: none; }
  .sidebar.mobile-open {
    position: fixed;
    z-index: 900;
    inset: 64px 0 0;
    display: flex;
    min-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .mobilebar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: var(--ink);
    color: white;
  }
  .mobilebar .mark { background: white; color: var(--ink); }
  .mobilebar button { border: 0; background: transparent; color: var(--green); font-weight: 800; }
  .workspace { padding: 28px 18px; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .dashboard-grid, .split { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .site-header { padding: 0 16px; }
  .nav-actions .primary { display: none; }
  .hero { padding: 42px 16px 54px; }
  .hero h1 { font-size: 44px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .board-grid, .feature-grid, .steps, .metrics, .form-grid { grid-template-columns: 1fr; }
  .section { padding: 68px 16px; }
  .auth-panel { padding: 28px 22px; }
  .workspace-header { align-items: flex-start; }
}


.detail-trigger, .task-detail-trigger { cursor: pointer; text-align: left; color: inherit; font: inherit; }
.detail-trigger { width: 100%; border: 0; background: transparent; }
.task-detail-trigger { border: 0; background: transparent; padding: 0; }
.detail-trigger:hover, .task-detail-trigger:hover { opacity: .82; }
.detail-modal { position: fixed; z-index: 1000; inset: 0; display: grid; place-items: center; padding: 20px; background: rgba(15, 23, 42, .55); }
.detail-card { width: min(680px, 100%); max-height: 82vh; overflow: auto; border-radius: 16px; padding: 24px; background: #fff; color: #172033; box-shadow: 0 20px 50px rgba(15, 23, 42, .3); }
.detail-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.detail-card dl { margin: 20px 0 0; }
.detail-card dl > div { padding: 13px 0; border-top: 1px solid #e5e7eb; }
.detail-card dt { font-weight: 700; }
.detail-card dd { margin: 5px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; color: #475569; }