/* RoutingLab | Unified site styles. Source order preserved from pre-Sprint 9 styles. */
/* HTML data-rl-css selects exactly the historic styling modules for each page. */

/* supabase-portal */
@scope (html[data-rl-css~="account-base"]) {
* {
  box-sizing: border-box;
}
:scope {
  min-width: 0;
}
body {
  margin: 0;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  color: #183349;
  background:
    radial-gradient(ellipse at 90% 0, #e4f4f5, transparent 38%), #f2f6fa;
  line-height: 1.5;
  min-height: 100dvh;
}
button,
input,
select {
  font: inherit;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
}
.layout {
  width: min(calc(100% - 38px), 1160px);
  margin: auto;
  padding: clamp(18px, 3vh, 35px) 0 20px;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}
.head {
  margin-bottom: 8px;
}
.back-link {
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  color: #196883;
}
.head-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 10px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 0.14em;
  font-weight: 800;
  color: #147e85;
}
.head h1 {
  font-size: clamp(33px, 3.8vw, 47px);
  letter-spacing: -0.055em;
  line-height: 1.15;
  margin: 6px 0;
}
.head h1 span {
  font-weight: 400;
  color: #778b9d;
}
.head p {
  font-size: 14px;
  margin: 7px 0;
  color: #657b91;
}
.head-pill {
  background: #e1f3f0;
  color: #176e63;
  border: 1px solid #c4e6de;
  padding: 9px 12px;
  font-size: 10px;
  letter-spacing: 0.05em;
  font-weight: 800;
  border-radius: 999px;
  white-space: nowrap;
}
.columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 22px);
  align-items: stretch;
}
.panel {
  background: white;
  border: 1px solid #dbe6ef;
  border-radius: 20px;
  padding: clamp(20px, 2.5vw, 32px);
  box-shadow: 0 13px 40px #152f490b;
  min-width: 0;
}
.panel h2 {
  font-size: clamp(23px, 2.3vw, 30px);
  letter-spacing: -0.04em;
  margin: 7px 0 5px;
}
.panel h3 {
  margin: 15px 0 8px;
}
.panel p {
  color: #698095;
  font-size: 13px;
  margin: 0 0 13px;
  overflow-wrap: anywhere;
}
.panel label {
  font-size: 12px;
  font-weight: 750;
  color: #31536c;
  display: block;
  margin: 13px 0 0;
}
.panel input,
.panel select {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 43px;
  margin-top: 5px;
  border: 1px solid #cadae6;
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  color: #19364a;
  font-size: 14px;
}
.panel input:focus,
.panel select:focus {
  outline: 3px solid #a3e0da;
  outline-offset: 1px;
  border-color: #15847e;
}
.panel button,
.dashboard-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #146a8c;
  color: white;
  border: 0;
  border-radius: 10px;
  padding: 11px 17px;
  text-decoration: none;
  min-height: 43px;
  font-size: 13px;
  font-weight: 750;
  margin-top: 15px;
}
.panel button:hover,
.dashboard-link:hover {
  background: #115375;
}
.panel button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.panel button.secondary {
  background: #e8f0f6;
  color: #31546e;
}
.portal-message {
  min-height: 0;
  font-size: 13px;
  font-weight: 600;
  color: #116f60;
}
.portal-message:not(:empty) {
  border: 1px solid #c8e9db;
  border-radius: 10px;
  background: #ecfaf5;
  padding: 9px 12px;
}
.portal-message.bad {
  color: #a42e35;
}
.portal-message.bad:not(:empty) {
  background: #fff2f3;
  border-color: #f7cdd1;
}
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  border-bottom: 1px solid #e2ebf2;
  padding-bottom: 14px;
}
.toolbar h2 {
  margin: 5px 0;
}
.toolbar-actions {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
}
.toolbar-actions > * {
  margin-top: 0 !important;
}
.hint {
  color: #6b8092;
}
.form-inline {
  display: flex;
  align-items: end;
  gap: 12px;
  flex-wrap: wrap;
}
.form-inline label {
  flex: 1 1 220px;
}
.form-inline button {
  flex: 0 0 auto;
}
.workspace {
  max-width: 100%;
}
.workspace p {
  margin-top: 8px;
}
.account-footer {
  font-size: 11px;
  text-align: center;
  color: #7d8f9e;
  margin-top: 10px;
}
hr {
  border: 0;
  border-top: 1px solid #e0e8ef;
  margin: 19px 0;
}
[hidden] {
  display: none !important;
}
button:focus-visible,
a:focus-visible {
  outline: 3px solid #1ba8a1;
  outline-offset: 3px;
}
@media (min-width: 901px) and (min-height: 660px) {
  body.account-page:has(#authArea:not([hidden])) {
    height: 100dvh;
    overflow: hidden;
  }
  .account-page:has(#authArea:not([hidden])) .layout {
    height: 100dvh;
    min-height: 0;
  }
  .account-page:has(#authArea:not([hidden])) .columns {
    min-height: 0;
  }
}
@media (max-height: 750px) and (min-width: 901px) {
  .layout {
    padding: 13px 0;
    gap: 7px;
  }
  .head-line {
    margin-top: 5px;
  }
  .head h1 {
    font-size: 34px;
  }
  .head p {
    margin: 4px 0;
  }
  .panel {
    padding: 17px 24px;
  }
  .panel label {
    margin-top: 10px;
  }
  .panel input,
  .panel select {
    min-height: 40px;
  }
  .panel button {
    margin-top: 13px;
  }
}
@media (max-width: 900px) {
  .layout {
    justify-content: flex-start;
    padding: 20px 0;
  }
  .columns {
    grid-template-columns: 1fr;
    max-width: 600px;
    width: 100%;
    margin: auto;
  }
  .head-pill {
    display: none;
  }
  .head h1 {
    font-size: 36px;
  }
  .panel {
    padding: 24px;
  }
  .account-footer {
    margin: 0;
  }
}
@media (max-width: 480px) {
  .layout {
    width: calc(100% - 24px);
    padding: 16px 0;
  }
  .head h1 {
    font-size: 32px;
  }
  .head p {
    font-size: 12px;
  }
  .panel {
    border-radius: 16px;
    padding: 20px;
  }
  .form-inline {
    display: block;
  }
  .form-inline button {
    width: 100%;
  }
}

}

/* portal-polish */
@scope (html[data-rl-css~="account-layout"]) {
/* RoutingLab / Akun & Kelas — balanced viewport, no blank scroll on desktop */
:scope {
  --ink: #193746;
  --muted: #6d8390;
  --teal: #147b78;
}
:scope,
body {
  min-width: 0;
}
body.account-page {
  font-size: 13px;
  line-height: 1.45;
  background:
    radial-gradient(ellipse at 100% 0%, #e7f5f1, transparent 32%), #f4f8fa;
  overflow-x: clip;
}
.account-page .layout {
  width: min(calc(100% - 40px), 1050px);
  padding: clamp(12px, 2.5vh, 27px) 0 16px;
  gap: 10px;
}
.account-page .head {
  margin-bottom: 1px;
}
.account-page .head-line {
  margin-top: 7px;
}
.account-page .back-link {
  font-size: 11px;
  color: #176878;
}
.account-page .eyebrow {
  font-size: 9px;
  letter-spacing: 0.13em;
  color: #167d7b;
}
.account-page .head h1 {
  font-size: clamp(25px, 3vw, 35px);
  margin: 4px 0;
  letter-spacing: -0.045em;
}
.account-page .head p {
  font-size: 12px;
  margin: 3px 0;
  color: #6b8191;
}
.account-page .head-pill {
  font-size: 9px;
  letter-spacing: 0.04em;
  padding: 7px 10px;
}
.account-page .columns {
  gap: clamp(10px, 1.5vw, 18px);
}
.account-page .panel {
  border-color: #dfebed;
  border-radius: 14px;
  padding: clamp(17px, 2vw, 25px);
  box-shadow: 0 6px 19px #113c470a;
}
.account-page .panel h2 {
  font-size: 23px;
  margin: 6px 0;
}
.account-page .panel h3 {
  font-size: 15px;
  margin: 13px 0 8px;
}
.account-page .panel p {
  font-size: 12px;
  margin: 0 0 10px;
  color: #6a8392;
}
.account-page .panel label {
  font-size: 11.5px;
  margin-top: 10px;
}
.account-page .panel input,
.account-page .panel select {
  font-size: 13px;
  min-height: 39px;
  padding: 8px 11px;
  border-radius: 8px;
  margin-top: 5px;
}
.account-page .panel button,
.account-page .dashboard-link {
  font-size: 12px;
  min-height: 39px;
  padding: 9px 13px;
  margin-top: 13px;
  border-radius: 8px;
  background: #116b7a;
}
.account-page .panel button.secondary {
  background: #e8f1f3;
  color: #244f63;
}
.account-page .portal-message {
  font-size: 11.5px;
}
.account-page .portal-message:not(:empty) {
  padding: 8px 10px;
  border-radius: 8px;
}
.account-page .toolbar {
  padding-bottom: 11px;
}
.account-page .toolbar-actions > * {
  margin-top: 0 !important;
}
.account-page .account-footer {
  font-size: 10px;
  margin-top: 4px;
  color: #879ca6;
}
.account-page .form-inline label {
  flex-basis: 160px;
}
@media (min-width: 901px) and (min-height: 680px) {
  :scope:has(body.account-page #authArea:not([hidden])),
  body.account-page:has(#authArea:not([hidden])) {
    height: 100dvh;
    overflow: hidden;
  }
  .account-page:has(#authArea:not([hidden])) .layout {
    height: 100dvh;
    min-height: 0;
    justify-content: center;
    overflow: hidden;
  }
  .account-page:has(#authArea:not([hidden])) .columns {
    min-height: 0;
  }
}
@media (min-width: 901px) and (max-height: 740px) {
  .account-page .panel {
    padding: 16px 20px;
  }
  .account-page .head h1 {
    font-size: 27px;
  }
  .account-page .panel h2 {
    font-size: 21px;
  }
  .account-page .panel label {
    margin-top: 8px;
  }
}
@media (max-width: 900px) {
  .account-page .layout {
    width: min(calc(100% - 28px), 650px);
    height: auto;
    min-height: 100dvh;
    justify-content: flex-start;
    padding: 22px 0;
  }
  .account-page .head-line {
    align-items: flex-start;
  }
  .account-page .columns {
    grid-template-columns: 1fr;
  }
  .account-page .head-pill {
    display: none;
  }
}
@media (max-width: 440px) {
  .account-page .layout {
    width: calc(100% - 24px);
    padding: 17px 0 20px;
  }
  .account-page .head h1 {
    font-size: 27px;
  }
  .account-page .panel {
    padding: 19px 16px;
    border-radius: 13px;
  }
  .account-page .panel h2 {
    font-size: 22px;
  }
  .account-page .toolbar {
    align-items: flex-start;
  }
  .account-page .toolbar-actions {
    width: 100%;
  }
  .account-page .toolbar-actions a,
  .account-page .toolbar-actions button {
    flex: 1;
  }
}

}

/* style */
@scope (html[data-rl-css~="base"]) {
:scope {
  --bg: #f5f7fb;
  --surface: #fff;
  --surface2: #edf3f9;
  --text: #17212d;
  --muted: #667487;
  --border: #dce4ed;
  --primary: #1f5ea8;
  --primary2: #163f70;
  --success: #2f7d57;
  --warning: #a46a15;
  --danger: #b53d3d;
  --shadow: 0 12px 32px rgba(21, 47, 78, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

:scope {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter,
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

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

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

button {
  cursor: pointer;
}

img,
svg {
  max-width: 100%;
}

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
}

.sidebar {
  background: #102a46;
  color: #fff;
  padding: 24px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.12);
  font-weight: 800;
}

.brand h1 {
  font-size: 20px;
  margin: 0;
}

.brand small {
  display: block;
  color: #bdd1e8;
}

.nav {
  display: grid;
  gap: 8px;
}

.nav a {
  padding: 11px 12px;
  border-radius: 10px;
  color: #dce8f4;
  font-size: 14px;
}

.nav a:hover,
.nav a.active {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.sidebar-footer {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.user-chip {
  font-size: 13px;
  color: #c7d6e6;
  margin-bottom: 10px;
}

.main {
  min-width: 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}

.topbar h2 {
  margin: 0;
  font-size: 18px;
}

.meta {
  color: var(--muted);
  font-size: 13px;
}

.content {
  padding: 28px;
  max-width: 1260px;
  margin: 0 auto;
}

.hero {
  background: linear-gradient(135deg, #153f72 0%, #1f5ea8 55%, #3f7ec5 100%);
  color: #fff;
  border-radius: 24px;
  padding: 30px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.hero:after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -100px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.hero h2 {
  margin: 0 0 8px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.15;
}

.hero p {
  max-width: 760px;
  margin: 0;
  color: #e7f0fa;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

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

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 4px 16px rgba(29, 48, 74, 0.04);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.section-title {
  margin: 28px 0 12px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
}

.section-title h3 {
  margin: 0;
  font-size: 21px;
}

.section-title p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
  min-height: 42px;
  transition: 0.18s;
}

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

.btn-primary:hover {
  background: var(--primary2);
}

.btn-light {
  background: #fff;
  color: var(--primary2);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: #abc2dc;
}

.btn-outline:hover {
  background: #edf5fc;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--surface2);
  color: var(--primary2);
  font-size: 12px;
  font-weight: 800;
}

.badge.success {
  background: #e9f6ef;
  color: var(--success);
}

.badge.warning {
  background: #fff4df;
  color: var(--warning);
}

.badge.danger {
  background: #fdecec;
  color: var(--danger);
}

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

.stat .value {
  font-size: 28px;
  font-weight: 800;
}

.stat .label {
  color: var(--muted);
  font-size: 13px;
}

.progress {
  height: 10px;
  background: #e8eef5;
  border-radius: 999px;
  overflow: hidden;
}

.progress > span {
  display: block;
  height: 100%;
  background: var(--primary);
  width: 0;
  transition: width 0.3s;
}

.list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.check {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: #eaf4ff;
  color: var(--primary);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  font-weight: 800;
}

.form-group {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
}

label {
  font-size: 13px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  background: #fff;
  color: var(--text);
  min-height: 44px;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(31, 94, 168, 0.14);
  border-color: var(--primary);
}

.help {
  color: var(--muted);
  font-size: 12px;
}

.alert {
  border-radius: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: #f7faff;
  font-size: 14px;
}

.alert.success {
  border-color: #b7dbc8;
  background: #edf8f2;
  color: #1e6847;
}

.alert.error {
  border-color: #edbbbb;
  background: #fff1f1;
  color: #963030;
}

.alert.warning {
  border-color: #efd49e;
  background: #fff8e9;
  color: #7f5719;
}

.terminal {
  background: #0f1d2a;
  color: #dce7f2;
  border-radius: 14px;
  padding: 16px;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  overflow: auto;
  border: 1px solid #23394c;
}

.terminal .ok {
  color: #8ee0ac;
}

.terminal .bad {
  color: #ff9d9d;
}

.code-chip {
  display: inline-block;
  font-family: Consolas, monospace;
  font-size: 12px;
  background: #eef2f7;
  border: 1px solid #d7e0ea;
  border-radius: 7px;
  padding: 2px 6px;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 660px;
}

th,
td {
  text-align: left;
  padding: 11px 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

th {
  color: var(--muted);
  font-weight: 800;
  background: #f8fafc;
}

.topology {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  align-items: center;
  min-height: 230px;
  padding: 22px 10px;
  border-radius: 18px;
  background: #f9fbfd;
  border: 1px dashed #bdd0e3;
}

.node {
  min-width: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.node strong {
  display: block;
  font-size: 13px;
}

.node small {
  color: var(--muted);
  font-size: 11px;
}

.node-icon {
  font-size: 26px;
  margin-bottom: 3px;
}

.link {
  position: absolute;
  height: 4px;
  background: #aac0d8;
  top: 50%;
  left: 7%;
  right: 7%;
  transform: translateY(-50%);
  border-radius: 999px;
  z-index: 1;
}

.packet {
  position: absolute;
  top: calc(50% - 12px);
  left: 7%;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: #f6b73c;
  z-index: 3;
  display: none;
  box-shadow: 0 4px 14px rgba(246, 183, 60, 0.5);
}

.packet.run {
  display: block;
  animation: travel 4s linear forwards;
}

@keyframes travel {
  from {
    left: 7%;
  }

  to {
    left: calc(93% - 24px);
  }
}

.quiz-option {
  display: block;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin: 9px 0;
  cursor: pointer;
  background: #fff;
}

.quiz-option:hover {
  border-color: #9fb9d6;
  background: #f8fbff;
}

.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  background: #eff4f9;
}

.login-visual {
  background: linear-gradient(135deg, #102b49, #1f5ea8);
  color: #fff;
  padding: 56px;
  display: grid;
  align-content: center;
}

.login-visual h1 {
  font-size: clamp(36px, 6vw, 70px);
  line-height: 1;
  margin: 0 0 18px;
}

.login-visual p {
  color: #d8e7f7;
  max-width: 560px;
}

.login-points {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.login-points div {
  display: flex;
  gap: 10px;
  align-items: center;
}

.login-form-wrap {
  padding: 40px;
  display: grid;
  place-items: center;
}

.login-card {
  width: min(440px, 100%);
  background: #fff;
  border-radius: 22px;
  padding: 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.login-card h2 {
  margin: 0 0 6px;
}

.login-card > p {
  margin: 0 0 20px;
  color: var(--muted);
}

.demo-box {
  margin-top: 18px;
  background: #f6f9fc;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  font-size: 13px;
}

.lesson-block {
  display: grid;
  gap: 14px;
}

.lesson-step {
  border-left: 4px solid #9dbadd;
  padding: 2px 0 2px 14px;
}

.lesson-step h4 {
  margin: 0 0 4px;
}

.lesson-step p {
  margin: 0;
  color: var(--muted);
}

.footer-note {
  margin-top: 34px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.hidden {
  display: none !important;
}

.center {
  text-align: center;
}

.mt-1 {
  margin-top: 10px;
}

.mt-2 {
  margin-top: 18px;
}

.mt-3 {
  margin-top: 28px;
}

}

/* responsive */
@scope (html[data-rl-css~="responsive"]) {
@media (max-width: 980px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

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

  .sidebar-footer {
    margin-top: 14px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .login-page {
    grid-template-columns: 1fr;
  }

  .login-visual {
    padding: 38px 28px;
  }
}

@media (max-width: 700px) {
  .topbar {
    padding: 14px 16px;
    align-items: flex-start;
    gap: 10px;
  }

  .content {
    padding: 18px 14px;
  }

  .hero {
    padding: 22px;
    border-radius: 18px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .topology {
    grid-template-columns: repeat(3, 1fr);
    min-height: 340px;
  }

  .link {
    display: none;
  }

  .packet {
    display: none !important;
  }

  .login-form-wrap {
    padding: 20px 14px;
  }

  .login-card {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

}

/* sprint4a */
@scope (html[data-rl-css~="layouts"]) {
/* RoutingLab Sprint 4A — design system & fluid responsive improvements. */
:scope {
  --bg: #f4f7fb;
  --surface: #fff;
  --surface2: #eef4fb;
  --text: #142438;
  --muted: #60758c;
  --border: #dde6f0;
  --primary: #175aa3;
  --primary2: #143f70;
  --shadow: 0 16px 42px rgba(19, 44, 76, 0.075);
  --radius: 18px;
}
body {
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
.shell {
  grid-template-columns: 252px minmax(0, 1fr);
}
.main {
  min-width: 0;
}
.sidebar {
  background: linear-gradient(165deg, #102b49, #11233b 75%);
  box-shadow: 8px 0 32px rgba(13, 30, 52, 0.07);
}
.brand-mark {
  background: #2368a1;
  border: 1px solid #4787b7;
  color: #fff;
}
.brand h1 {
  letter-spacing: -0.5px;
}
.brand small {
  font-size: 11px;
  color: #a9c8e6;
}
.nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  transition:
    background 0.15s ease,
    transform 0.15s ease;
  border: 1px solid transparent;
}
.nav a:hover {
  background: #23486d;
  transform: translateX(2px);
}
.nav a.active {
  background: #20619b;
  border-color: #4780b2;
  color: #fff;
  font-weight: 650;
}
.nav-lab {
  background: rgba(38, 160, 170, 0.13);
  border-color: rgba(65, 203, 209, 0.3) !important;
  color: #dbfbff !important;
}
.nav-new {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: #0d8e88;
  padding: 3px 6px;
  border-radius: 5px;
  color: #fff;
}
.topbar {
  z-index: 15;
  background: rgba(255, 255, 255, 0.91);
  padding: 19px clamp(18px, 3vw, 42px);
  box-shadow: 0 1px 0 rgba(20, 47, 75, 0.025);
}
.content {
  padding: clamp(18px, 2.8vw, 36px);
  max-width: 1400px;
}
.hero {
  background: linear-gradient(112deg, #123254 0%, #18568c 64%, #267d9a 100%);
  border-radius: 22px;
  box-shadow: 0 20px 44px rgba(24, 71, 108, 0.16);
}
.card,
.login-card {
  border-color: #e1e8f2;
  box-shadow: 0 9px 25px rgba(26, 54, 82, 0.045);
}
a.card {
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease;
}
a.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 34px rgba(26, 54, 82, 0.1);
  border-color: #8db6d5;
}
.btn {
  min-height: 42px;
}
.btn:focus-visible,
.nav a:focus-visible,
.feature-action:focus-visible,
.mobile-menu-button:focus-visible {
  outline: 3px solid #20aba7;
  outline-offset: 3px;
}
.feature-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  background: #e9f4f8;
  border: 1px solid #c6e5e9;
  border-radius: 18px;
  padding: 23px 25px;
  margin: 20px 0;
}
.feature-banner h3 {
  font-size: clamp(18px, 2vw, 23px);
  margin: 5px 0;
  color: #173c57;
}
.feature-banner p {
  margin: 0;
  color: #456479;
  font-size: 14px;
}
.feature-kicker {
  font-size: 10px;
  letter-spacing: 1.5px;
  font-weight: 800;
  color: #077c81;
}
.feature-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 18px;
  background: #12547b;
  border-radius: 11px;
  color: #fff;
  white-space: nowrap;
  font-weight: 700;
  font-size: 14px;
}
.feature-action:hover {
  background: #0d4162;
}
.mobile-menu-button {
  display: none;
}
.sidebar-scrim[hidden] {
  display: none !important;
}
/* Preserve visualizer packet movement on small screens: scrolling viewport rather than hiding simulation. */
@media (max-width: 700px) {
  .packet {
    display: initial !important;
  }
  .topology {
    overflow-x: auto;
  }
  .link {
    display: block;
  }
  .feature-banner {
    align-items: stretch;
    flex-direction: column;
  }
  .feature-action {
    width: 100%;
  }
}
@media (max-width: 1100px) {
  .shell {
    display: block;
  }
  .mobile-menu-button {
    display: flex;
    gap: 10px;
    align-items: center;
    position: fixed;
    right: 14px;
    bottom: 14px;
    z-index: 101;
    background: #12527d;
    color: white;
    border: 1px solid #4c86a8;
    border-radius: 999px;
    padding: 12px 18px;
    box-shadow: 0 12px 30px #102e4b44;
    font-weight: 750;
    min-height: 48px;
  }
  .sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(310px, 86vw);
    height: 100dvh !important;
    overflow-y: auto;
    z-index: 103;
    transform: translateX(-105%);
    transition: transform 0.22s ease;
    padding: 22px 16px;
  }
  .sidebar.is-open {
    transform: translateX(0);
  }
  .sidebar-scrim:not([hidden]) {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 102;
    background: rgba(6, 19, 36, 0.58);
  }
  .nav {
    display: grid;
    grid-template-columns: 1fr !important;
    gap: 5px;
  }
  .nav a {
    min-height: 43px;
  }
  .sidebar-footer {
    margin-top: 22px;
  }
  .main {
    width: 100%;
  }
}
@media (min-width: 701px) and (max-width: 1100px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .content {
    padding: 26px;
  }
  .topbar {
    padding: 18px 26px;
  }
}
@media (max-width: 700px) {
  .topbar {
    position: relative;
    padding: 16px 17px;
    flex-wrap: wrap;
  }
  .content {
    padding: 18px 14px 84px;
  }
  .hero {
    padding: 24px 21px;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 18px;
  }
  .section-title {
    align-items: start;
    flex-direction: column;
    gap: 4px;
  }
  .login-page {
    min-height: 100dvh;
  }
  .login-visual {
    padding: 32px 22px;
  }
  .login-form-wrap {
    padding: 20px 14px;
  }
  .feature-banner {
    margin-top: 16px;
    padding: 18px;
  }
  .sidebar {
    padding-bottom: 32px;
  }
}
@media (max-width: 390px) {
  .topbar h2 {
    font-size: 16px;
  }
  .mobile-menu-button {
    right: 12px;
    bottom: 12px;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}
@media (prefers-reduced-motion: reduce) {
  .sidebar,
  a.card {
    transition: none !important;
  }
}

}

/* sprint6 */
@scope (html[data-rl-css~="auth-layout"]) {
/* Sprint 6 · design polish — preserve natural scrolling for long content. */
:scope {
  --primary: #176c9a;
  --primary2: #11486c;
  --bg: #f2f6fb;
  --border: #dbe5ee;
  --text: #192f45;
  --muted: #63788e;
}
:scope,
body {
  min-width: 0;
}
body {
  background: var(--bg);
}
/* Login: one true viewport on normal desktops, no blank document overflow. */
body.login-only {
  margin: 0;
}
.login-page {
  min-height: 100dvh;
  background: #f5f8fc;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
}
.login-visual {
  min-height: 0;
  background:
    radial-gradient(
      ellipse at 105% 10%,
      rgba(45, 183, 173, 0.24),
      transparent 35%
    ),
    linear-gradient(155deg, #102742 8%, #123b5d 57%, #176e82);
  padding: clamp(28px, 4vw, 76px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(22px, 5vh, 60px);
}
.login-intro {
  max-width: 570px;
  margin: auto 0;
}
.login-kicker {
  color: #a5e6dc;
  font-size: 10px;
  letter-spacing: 0.16em;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.login-kicker.dark {
  color: #19738b;
}
.pulse-dot {
  background: #61dbc1;
  height: 8px;
  width: 8px;
  border-radius: 50%;
  display: inline-block;
}
.login-logo {
  color: #d6eaf5;
  font-weight: 800;
  font-size: 15px;
  margin-top: clamp(25px, 5vh, 68px);
  display: flex;
  gap: 13px;
  align-items: center;
}
.login-logo span {
  border-left: 1px solid #6991ab;
  padding-left: 13px;
  color: #bfd3e1;
  font-size: 12px;
  font-weight: 500;
}
.login-visual h1 {
  font-size: clamp(38px, 4.2vw, 72px);
  letter-spacing: -0.055em;
  line-height: 1.08;
  margin: 20px 0;
}
.login-visual h1 em {
  color: #68ddc1;
  font-style: normal;
}
.login-visual p {
  max-width: 550px;
  color: #c6dbe6;
  font-size: clamp(14px, 1.25vw, 17px);
  line-height: 1.65;
}
.login-points {
  gap: 12px;
  margin-top: clamp(21px, 3.8vh, 43px);
}
.login-points div {
  font-size: 13px;
  color: #ddf2f5;
  border-left: 2px solid #4fd0b4;
  padding-left: 14px;
}
.login-visual-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: #c5dce5;
  opacity: 0.75;
  font-size: 11px;
}
.login-form-wrap {
  padding: clamp(14px, 3.5vw, 62px);
  background: #f6f9fc;
  min-width: 0;
}
.login-card {
  width: min(440px, 100%);
  border: 1px solid #e0eaf1;
  box-shadow: 0 28px 65px rgba(24, 57, 83, 0.09);
  border-radius: 24px;
  padding: clamp(22px, 3vw, 39px);
}
.login-card h2 {
  font-size: clamp(25px, 2.25vw, 34px);
  line-height: 1.16;
  letter-spacing: -0.04em;
  margin: 13px 0 9px;
  color: #152f46;
}
.login-card > p {
  font-size: 13px;
  line-height: 1.55;
  margin-bottom: 20px;
}
.login-card .form-group {
  margin-bottom: 14px;
}
.login-card label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 700;
  color: #26465f;
}
.login-card input {
  width: 100%;
  min-width: 0;
  min-height: 47px;
  border: 1px solid #cedee8;
  background: #fff;
  border-radius: 11px;
  padding: 11px 14px;
  font-size: 15px;
  color: #19344a;
}
.login-card input:focus-visible {
  outline: 3px solid #8de0d3;
  outline-offset: 1px;
  border-color: #258781;
}
.login-submit {
  width: 100%;
  margin-top: 7px;
  display: flex;
  justify-content: space-between;
  padding: 13px 16px;
  background: #12688b;
  font-size: 14px;
}
.login-note {
  font-size: 12px;
  margin: 14px 0 0 !important;
  padding: 10px 12px;
  border: 1px solid #dbe6ef;
  color: #527086;
  background: #f4f8fb;
  border-radius: 10px;
}
.login-register {
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
  color: #526b7c;
}
.login-register a {
  color: #12688b;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.login-register.second {
  margin-top: 8px;
  font-size: 12px;
}
.login-mobile-brand {
  display: none;
}
@media (min-width: 901px) and (min-height: 640px) {
  body.login-only {
    height: 100dvh;
    overflow: hidden;
  }
  .login-page {
    height: 100dvh;
    min-height: 0;
  }
  .login-form-wrap,
  .login-visual {
    height: 100%;
    overflow-y: auto;
  }
}
@media (min-width: 901px) and (max-height: 760px) {
  .login-visual {
    gap: 12px;
    padding-top: 20px;
    padding-bottom: 20px;
  }
  .login-logo {
    margin-top: 18px;
  }
  .login-visual h1 {
    font-size: clamp(36px, 3.7vw, 54px);
    margin: 12px 0;
  }
  .login-points {
    margin-top: 18px;
  }
  .login-card {
    padding: 24px 30px;
  }
}
@media (max-width: 900px) {
  .login-page {
    display: flex;
    flex-direction: column;
  }
  .login-visual {
    min-height: 0;
    padding: 30px clamp(18px, 4vw, 32px);
    gap: 0;
  }
  .login-intro {
    margin: 0;
  }
  .login-logo,
  .login-visual-footer,
  .login-points {
    display: none;
  }
  .login-visual h1 {
    font-size: clamp(29px, 6vw, 43px);
    margin: 12px 0 5px;
  }
  .login-visual p {
    margin: 6px 0 0;
    font-size: 13px;
  }
  .login-form-wrap {
    padding: 20px 16px 30px;
    flex: 1;
  }
  .login-card {
    width: min(480px, 100%);
    padding: clamp(22px, 4vw, 32px);
  }
  .login-mobile-brand {
    display: block;
    color: #12688b;
    font-weight: 800;
    font-size: 12px;
    margin-bottom: 10px;
  }
}
@media (max-width: 480px) {
  .login-visual {
    padding: 23px 18px;
  }
  .login-visual h1 {
    font-size: 31px;
  }
  .login-visual p {
    display: none;
  }
  .login-form-wrap {
    padding: 13px 12px 26px;
  }
  .login-card {
    border-radius: 18px;
    padding: 24px 20px;
  }
  .login-card h2 {
    font-size: 27px;
  }
}
/* All other pages: honest content height; table overflow contained. */
.shell {
  min-height: 100dvh;
}
.shell .main {
  min-width: 0;
}
.main .content {
  width: 100%;
}
.topbar .badge {
  background: #e7f5f2;
  color: #176e6c;
}
.content .card {
  min-width: 0;
}
.table-wrap {
  overflow-x: auto;
}
.table-wrap table {
  min-width: 560px;
}
.sidebar-footer {
  overflow-wrap: anywhere;
}
.sync-indicator {
  position: fixed;
  z-index: 120;
  right: 14px;
  bottom: 14px;
  padding: 9px 12px;
  border-radius: 11px;
  background: rgba(18, 55, 74, 0.94);
  color: #d9fff4;
  font-size: 11px;
  line-height: 1.4;
  max-width: min(300px, 85vw);
  box-shadow: 0 10px 25px #0d314433;
  pointer-events: none;
}
.sync-indicator.sync-error {
  background: #7f2334;
  color: white;
}
@media (max-width: 1100px) {
  .sync-indicator {
    right: 14px;
    bottom: 76px;
  }
}
.boot-error {
  font: 16px system-ui;
  max-width: 600px;
  margin: 12vh auto;
  border: 1px solid #dbe7ee;
  border-radius: 20px;
  padding: clamp(22px, 5vw, 50px);
  background: white;
  color: #182f44;
}
.boot-error a {
  color: #166c8f;
  text-decoration: underline;
}
:scope.auth-pending body .shell,
:scope.auth-pending body .top,
:scope.auth-pending body #labLayout,
:scope.auth-pending body .lab-context,
:scope.auth-pending body .mobile-tabs,
:scope.auth-pending body footer {
  visibility: hidden;
}
:scope.auth-pending body::before {
  content: "Memverifikasi sesi RoutingLab…";
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  color: #174963;
  font: 600 14px system-ui;
  z-index: 200;
  background: #f3f7fb;
}
@media (prefers-reduced-motion: reduce) {
  .login-submit,
  .btn {
    transition: none;
  }
}

}

/* sprint7 */
@scope (html[data-rl-css~="progress-layout"]) {
/* Sprint 7 | classroom reporting and activity history */
.rl7-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin: 14px 0 16px;
}
.rl7-filter {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: min(300px, 100%);
}
.rl7-filter label {
  font-size: 13px;
  font-weight: 700;
  color: #34546a;
}
.rl7-filter select {
  min-height: 44px;
  width: 100%;
  border: 1px solid #cbdce9;
  border-radius: 11px;
  background: white;
  padding: 9px 12px;
  color: #17384c;
  font-size: 14px;
}
.rl7-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.rl7-actions button {
  min-height: 42px;
}
.rl7-actions button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.rl7-status {
  margin: 0 0 16px;
  color: #627a8c;
  font-size: 12px;
  line-height: 1.55;
}
.rl7-error {
  color: #a72539 !important;
}
.rl7-meter {
  width: 110px;
  max-width: 100%;
  height: 6px;
  background: #e5edf5;
  border-radius: 100px;
  overflow: hidden;
  margin-top: 7px;
}
.rl7-meter span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #1477a0, #22a897);
  border-radius: 100px;
}
.rl7-empty {
  padding: 24px 18px !important;
  color: #657e90;
  font-size: 14px;
  text-align: center;
}
.rl7-table {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.rl7-table table {
  min-width: 800px;
  width: 100%;
  border-collapse: collapse;
}
.rl7-table th {
  white-space: nowrap;
}
.rl7-table td {
  vertical-align: middle;
  min-width: 80px;
}
.rl7-note {
  border: 1px solid #d8e7ef;
  background: #f7fbfe;
  border-radius: 12px;
  padding: 12px 15px;
  font-size: 13px;
  color: #49697d;
  line-height: 1.65;
}
.rl7-activity-list {
  width: 100%;
  min-width: 540px;
}
.rl7-activity-list td {
  font-size: 13px;
}
@media (max-width: 650px) {
  .rl7-toolbar {
    align-items: stretch;
  }
  .rl7-filter {
    width: 100%;
    min-width: 0;
  }
  .rl7-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .rl7-actions .btn {
    padding: 11px 7px;
    text-align: center;
    font-size: 12px;
  }
  .rl7-table {
    border-radius: 12px;
  }
  .rl7-status {
    font-size: 12px;
  }
}

}

/* ui-polish */
@scope (html[data-rl-css~="ui-polish"]) {
/* RoutingLab / UI Polish — compact learning interface (post Sprint 7).
   Purely presentational: preserves existing page IDs, event hooks and auth. */
:scope {
  --bg: #f4f8fa;
  --surface: #ffffff;
  --surface2: #edf4f6;
  --text: #183346;
  --muted: #657a8b;
  --border: #dfe9ee;
  --primary: #136b83;
  --primary2: #10465f;
  --success: #07846f;
  --shadow: 0 6px 20px rgba(18, 54, 70, 0.045);
  --radius: 14px;
}
:scope {
  min-width: 0;
  scroll-behavior: smooth;
}
body {
  background: #f4f8fa;
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
.shell {
  display: grid;
  grid-template-columns: 226px minmax(0, 1fr);
  min-height: 100dvh;
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
  background: linear-gradient(168deg, #122d40 0%, #0d2436 85%);
  padding: 21px 14px;
  border-right: 1px solid #284b5d;
  box-shadow: none;
}
.brand {
  gap: 10px;
  margin-bottom: 23px;
  padding: 0 6px;
}
.brand-mark {
  width: 39px;
  height: 39px;
  border-radius: 10px;
  background: #e6fbf7;
  border: 1px solid #bfe6de;
  color: #0b626c;
  font-size: 16px;
}
.brand h1 {
  font-size: 18px;
  letter-spacing: -0.6px;
  line-height: 1.3;
}
.brand small {
  font-size: 10px;
  color: #97b3c0;
  letter-spacing: 0.035em;
}
.nav {
  gap: 4px;
}
.nav a {
  position: relative;
  display: flex;
  gap: 10px;
  justify-content: flex-start;
  min-height: 37px;
  padding: 8px 11px;
  border-radius: 9px;
  font-size: 12.5px;
  font-weight: 550;
  color: #c3d2dc;
  transition:
    background 0.13s,
    border 0.13s;
  line-height: 1.3;
}
.nav a::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border-radius: 2px;
  background: #527688;
  box-shadow: 0 0 0 3px rgba(108, 175, 185, 0.07);
}
.nav a:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.075);
}
.nav a:hover::before {
  background: #5bdbc4;
}
.nav a.active {
  color: #fff;
  background: linear-gradient(
    100deg,
    rgba(24, 136, 136, 0.27),
    rgba(38, 153, 140, 0.16)
  );
  border-color: rgba(93, 205, 183, 0.3);
  font-weight: 750;
}
.nav a.active::before {
  background: #4bd5b5;
}
.nav .nav-lab {
  background: rgba(37, 155, 146, 0.08);
  border-color: rgba(70, 181, 171, 0.14) !important;
  color: #c9f1ed !important;
}
.nav .nav-lab.active {
  background: rgba(26, 150, 140, 0.25);
}
.nav-new {
  font-size: 9px;
}
.sidebar-footer {
  margin-top: 22px;
  padding: 14px 5px 5px;
  border-color: #365064;
}
.sidebar-footer .btn {
  font-size: 12px;
  padding: 8px 12px;
  min-height: 34px;
}
.user-chip {
  font-size: 11.5px;
  margin-bottom: 10px;
  color: #c5d6dc;
}
.main {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.topbar {
  position: relative;
  top: auto;
  z-index: 8;
  flex: 0 0 auto;
  min-height: 65px;
  padding: 13px clamp(18px, 2.3vw, 31px);
  background: #fff;
  box-shadow: none;
  border-bottom: 1px solid #e1eaf0;
}
.topbar h2 {
  font-size: 18px;
  letter-spacing: -0.03em;
  font-weight: 780;
  line-height: 1.3;
}
.meta {
  font-size: 11.5px;
  color: #7a8e9d;
  margin-top: 3px;
}
.topbar .badge {
  font-size: 10px;
  font-weight: 750;
  padding: 5px 10px;
  background: #e5f6f2;
  color: #147366;
  border: 1px solid #cae9df;
}
.content {
  width: 100%;
  max-width: 1320px;
  min-width: 0;
  flex: 1 0 auto;
  margin: 0 auto;
  padding: clamp(16px, 1.9vw, 26px);
}
.hero {
  padding: clamp(19px, 2.3vw, 30px);
  background: linear-gradient(113deg, #122e45, #155171 65%, #147b7d);
  border-radius: 17px;
  box-shadow: 0 12px 28px rgba(24, 75, 94, 0.12);
}
.hero::after {
  opacity: 0.5;
}
.hero h2 {
  font-size: clamp(22px, 2.25vw, 30px);
  line-height: 1.22;
  margin: 9px 0 7px;
  letter-spacing: -0.035em;
}
.hero p {
  font-size: 13px;
  line-height: 1.55;
  max-width: 740px;
}
.hero .badge {
  background: #def9ee;
  color: #147062;
  font-size: 10px;
}
.hero-actions {
  margin-top: 14px;
  gap: 9px;
}
.card {
  padding: clamp(15px, 1.55vw, 20px);
  border-radius: 13px;
  box-shadow: var(--shadow);
  border-color: var(--border);
}
.card h3 {
  font-size: 15px;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}
.card p,
.card li {
  font-size: 12.5px;
  line-height: 1.55;
}
.section-title {
  margin: 20px 0 10px;
  gap: 8px;
}
.section-title h3 {
  font-size: 17px;
  letter-spacing: -0.03em;
}
.section-title p {
  font-size: 12px;
}
.grid {
  gap: clamp(10px, 1.4vw, 16px);
}
.badge {
  font-size: 10px;
  padding: 4px 8px;
  letter-spacing: 0.005em;
}
.stat {
  gap: 6px;
}
.stat .value {
  font-size: 24px;
  line-height: 1.2;
}
.stat .label {
  font-size: 12px;
}
.stat p {
  font-size: 11.5px;
}
.feature-banner {
  padding: 15px 18px;
  margin: 15px 0;
  border-radius: 13px;
  background: #ebf6f5;
  border-color: #d1e7e5;
  gap: 14px;
}
.feature-banner h3 {
  font-size: 17px;
  margin: 3px 0 4px;
  color: #1a4656;
}
.feature-banner p {
  font-size: 12px;
}
.feature-kicker {
  font-size: 9px;
  letter-spacing: 0.12em;
}
.feature-action {
  min-height: 37px;
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 12px;
  white-space: nowrap;
  background: #11687b;
}
.btn {
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
}
.btn-primary {
  background: #146c83;
}
.btn-primary:hover {
  background: #12546c;
}
.btn-outline {
  color: #17667e;
  border-color: #9bbdc9;
}
input,
select,
textarea {
  min-height: 40px;
  padding: 9px 11px;
  border-radius: 8px;
  border-color: #cddfe6;
  font-size: 13px;
}
label {
  font-size: 12px;
}
.form-group {
  gap: 5px;
  margin-bottom: 11px;
}
.alert {
  padding: 11px 12px;
  border-radius: 9px;
  font-size: 12px;
}
.code-chip {
  font-size: 11px;
}
.terminal {
  font-size: 12px;
  line-height: 1.5;
}
.topology {
  border-color: #c4dce0;
  background-color: #f7fbfb;
  background-image: radial-gradient(#d7e6e6 1px, transparent 1px);
  background-size: 23px 23px;
  border-radius: 13px;
  min-height: 190px;
}
.node {
  border-color: #d8e5e8;
  box-shadow: 0 4px 12px #14384b0a;
  border-radius: 10px;
  padding: 10px 7px;
}
.node strong {
  font-size: 12px;
}
.node small {
  font-size: 10px;
}
.node-icon {
  font-size: 23px;
}
.table-wrap {
  overflow-x: auto;
  max-width: 100%;
}
table {
  max-width: 100%;
}
th,
td {
  font-size: 11.5px;
  padding: 9px;
}
.footer-note {
  font-size: 10.5px;
  margin-top: 16px;
  color: #8b9ba6;
}
.mt-1 {
  margin-top: 8px;
}
.mt-2 {
  margin-top: 13px;
}
.mt-3 {
  margin-top: 20px;
}
.lesson-block {
  gap: 12px;
}
.lesson-step {
  padding-left: 13px;
}
/* Login is a single screen on desktop; panels scroll only on genuinely short viewports. */
body.login-only {
  height: auto;
  overflow-x: hidden;
}
body.login-only .login-page {
  min-height: 100dvh;
  background: #f6f9fa;
  grid-template-columns: minmax(0, 0.97fr) minmax(0, 1.03fr);
}
.login-visual {
  padding: clamp(28px, 3.1vw, 52px);
  background:
    radial-gradient(
      ellipse at 105% 10%,
      rgba(22, 152, 135, 0.26),
      transparent 39%
    ),
    linear-gradient(165deg, #0f293e 0%, #123c52 67%, #14766d 100%);
  gap: 24px;
}
.login-visual h1 {
  font-size: clamp(30px, 3.3vw, 49px);
  line-height: 1.13;
  margin: 13px 0 12px;
  letter-spacing: -0.04em;
}
.login-visual p {
  font-size: 12.5px;
  max-width: 460px;
}
.login-logo {
  font-size: 13px;
  margin-top: 18px;
}
.login-points {
  gap: 9px;
  margin-top: 20px;
}
.login-points div {
  font-size: 11.5px;
}
.login-form-wrap {
  padding: clamp(16px, 2.8vw, 42px);
}
.login-card {
  width: min(406px, 100%);
  padding: clamp(22px, 2.35vw, 34px);
  border-radius: 17px;
  box-shadow: 0 16px 44px rgba(13, 54, 72, 0.08);
}
.login-card h2 {
  font-size: clamp(22px, 1.95vw, 27px);
  margin: 10px 0 7px;
}
.login-card > p {
  font-size: 12px;
  margin-bottom: 15px;
}
.login-card label {
  font-size: 12px;
  margin-bottom: 6px;
}
.login-card .form-group {
  margin-bottom: 12px;
}
.login-card input {
  min-height: 42px;
  font-size: 14px;
  border-radius: 9px;
}
.login-submit {
  padding: 10px 13px;
  min-height: 43px;
  font-size: 12.5px;
  margin-top: 4px;
}
.login-note {
  font-size: 11px;
  line-height: 1.4;
  margin-top: 10px !important;
  padding: 8px 10px;
}
.login-register {
  font-size: 11.5px;
  margin-top: 12px;
}
.login-register.second {
  margin-top: 5px;
}
.login-kicker {
  font-size: 9px;
}
.login-visual-footer {
  font-size: 10px;
}
@media (min-width: 901px) and (min-height: 680px) {
  :scope:has(body.login-only),
  body.login-only {
    height: 100dvh;
    overflow: hidden;
  }
  body.login-only .login-page {
    height: 100dvh;
    min-height: 0;
  }
  body.login-only .login-form-wrap,
  body.login-only .login-visual {
    height: 100%;
    overflow-y: auto;
  }
}
@media (max-width: 1100px) {
  .shell {
    display: block;
  }
  .main {
    display: flex;
    min-height: 100dvh;
  }
  .sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(290px, 85vw);
    height: 100dvh !important;
    overflow-y: auto;
    z-index: 103;
    transform: translateX(-105%);
    padding: 21px 16px;
  }
  .sidebar.is-open {
    transform: translateX(0);
  }
  .mobile-menu-button {
    font-size: 12px;
    min-height: 46px;
    bottom: 14px;
    right: 14px;
    padding: 10px 13px;
  }
  .content {
    padding: 20px 22px 75px;
  }
}
@media (max-width: 900px) {
  body.login-only .login-page {
    display: flex;
    flex-direction: column;
  }
  body.login-only .login-visual {
    padding: 23px 22px;
    gap: 0;
  }
  body.login-only .login-visual h1 {
    font-size: clamp(28px, 5vw, 36px);
    margin: 8px 0;
  }
  body.login-only .login-visual p {
    font-size: 12px;
  }
  body.login-only .login-form-wrap {
    padding: 16px;
    flex: 1;
  }
  body.login-only .login-card {
    padding: 24px;
  }
}
@media (max-width: 700px) {
  body {
    font-size: 13px;
  }
  .topbar {
    padding: 14px 15px;
    min-height: 0;
    gap: 6px;
  }
  .topbar h2 {
    font-size: 16px;
  }
  .topbar .badge {
    font-size: 9px;
  }
  .content {
    padding: 15px 13px 78px;
  }
  .hero {
    padding: 20px 17px;
  }
  .hero h2 {
    font-size: 23px;
  }
  .hero p {
    font-size: 12px;
  }
  .card {
    padding: 15px;
  }
  .section-title {
    margin: 17px 0 9px;
  }
  .section-title h3 {
    font-size: 16px;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .feature-banner {
    margin: 13px 0;
    padding: 15px;
  }
  .feature-action {
    font-size: 12px;
  }
  .topology {
    min-height: 250px;
  }
  .node {
    padding: 9px 4px;
  }
  .node strong {
    font-size: 11px;
  }
  .footer-note {
    margin-top: 14px;
  }
  .login-card {
    border-radius: 16px;
  }
  .login-visual h1 {
    font-size: 29px;
  }
}
@media (max-width: 380px) {
  .topbar .badge {
    max-width: 130px;
    white-space: normal;
    text-align: center;
  }
  .content {
    padding-left: 11px;
    padding-right: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  :scope {
    scroll-behavior: auto;
  }
}

}

/* bootstrap-blue */
@scope (html[data-rl-css~="blue-theme"]) {

:scope {
  --bg: #f4f8ff;
  --surface: #ffffff;
  --surface2: #eef5ff;
  --text: #15314b;
  --muted: #627991;
  --border: #d9e6f5;
  --primary: #3b82f6;
  --primary2: #2563eb;
  --success: #198754;
  --warning: #c28a10;
  --danger: #dc3545;
  --shadow: 0 16px 36px rgba(37, 99, 235, .10);
  --radius: 18px;
}

:scope, body { min-width:0; }
body {
  background:
    radial-gradient(circle at top right, rgba(59,130,246,.10), transparent 28%),
    linear-gradient(180deg, #f7faff 0%, #f3f8ff 100%);
  color: var(--text);
}

.sidebar {
  background: linear-gradient(180deg, #0f2d4f 0%, #184f91 65%, #1d64bd 100%);
  box-shadow: inset -1px 0 0 rgba(255,255,255,.08);
}
.brand-mark {
  background: rgba(255,255,255,.92);
  color: var(--primary2);
  box-shadow: 0 10px 24px rgba(13,110,253,.14);
}
.brand small { color:#d8e8ff; }
.nav a {
  color: #e4efff;
  border: 1px solid transparent;
}
.nav a:hover,
.nav a.active,
.nav a[aria-current="page"],
.nav a.nav-lab {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.14);
  color: #fff;
}
.sidebar-footer { border-top-color: rgba(255,255,255,.16); }
.user-chip { color:#d6e6ff; }

.topbar {
  background: rgba(255,255,255,.90);
  backdrop-filter: blur(14px);
}
.topbar h2 { font-size: 22px; color: #173a63; }
.meta { color: #70869e; }
.badge {
  display:inline-flex; align-items:center; justify-content:center;
  gap:6px; min-height:32px; padding:6px 12px; border-radius:999px;
  font-size:12px; font-weight:800; letter-spacing:.01em;
  background: #e7f1ff; color: #1f67da; border: 1px solid #cfe0ff;
}

.content { max-width: 1280px; }
.hero {
  background: linear-gradient(135deg, #1756b3 0%, #2f7ff6 55%, #6eb1ff 100%);
  box-shadow: 0 18px 38px rgba(30, 99, 210, .16);
}
.hero:after { background: rgba(255,255,255,.12); }
.hero p { color:#eff6ff; }

.card {
  border-radius: 20px;
  border-color: #dbe7f4;
  box-shadow: 0 8px 22px rgba(29, 78, 216, .05);
}
.card h3 { color: #1b436e; }
.section-title h3 { color:#173a63; }
.section-title p, .card p { color:#6a8299; }

.btn {
  border-radius: 12px;
  font-weight: 700;
}
.btn-primary,
button.btn-primary,
.login-submit,
.account-page .panel button:not(.secondary),
.dashboard-link {
  background: linear-gradient(135deg, #2f7df4 0%, #2563eb 100%);
  color: white;
  box-shadow: 0 10px 22px rgba(37,99,235,.18);
}
.btn-primary:hover,
button.btn-primary:hover,
.login-submit:hover,
.account-page .panel button:not(.secondary):hover,
.dashboard-link:hover {
  filter: brightness(1.04);
}
.btn-light {
  background:#edf4ff;
  color:#2459b1;
  border-color:#d3e2fb;
}
input:focus,
select:focus,
textarea:focus,
.panel input:focus,
.panel select:focus,
.login-card input:focus-visible {
  outline: 3px solid rgba(59,130,246,.18);
  border-color: #3b82f6;
}

.alert {
  border-radius: 16px;
  border-color: #d9e6f5;
  background: #f7fbff;
}
.alert.success { background:#edf9f1; border-color:#c8ead6; color:#16653f; }
.alert.warning { background:#fff8e8; border-color:#f2dfa9; color:#8b6510; }
.alert.error { background:#fff1f2; border-color:#f4c7cf; color:#b02a37; }

/* evaluation polish */
#quizForm { gap: 16px; }
.quiz-card {
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  border: 1px solid #d9e7f6 !important;
  box-shadow: 0 10px 26px rgba(37, 99, 235, .05);
  padding: 18px 20px 16px;
}

.quiz-card .quiz-legend {
    float: left;
    width: 100%;
    margin: 0 0 16px;
    padding: 0;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
    color: #173a63;
}

.quiz-card .quiz-option:first-of-type {
    clear: both;
}

.quiz-option {
  display: grid;
  grid-template-columns: 20px 34px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  border: 1px solid #d9e5f4;
  background: #f9fbff;
  border-radius: 16px;
  margin: 10px 0 0;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.quiz-option:hover {
  border-color: #90b7ff;
  background: #f2f7ff;
  box-shadow: 0 8px 20px rgba(59,130,246,.08);
  transform: translateY(-1px);
}
.quiz-option input[type="radio"] {
  width: 18px;
  min-width: 18px;
  height: 18px;
  min-height: 18px;
  margin: 0;
  accent-color: #3b82f6;
}
.quiz-choice-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 800;
  color: #2156ad;
  background: #e8f1ff;
  border: 1px solid #cddfff;
}
.quiz-option-text {
  font-size: 14px;
  line-height: 1.55;
  color: #1e4068;
  font-weight: 600;
}
.quiz-option:has(input:checked) {
  border-color: #68a0ff;
  background: linear-gradient(180deg, #eef5ff 0%, #f8fbff 100%);
  box-shadow: 0 12px 24px rgba(59,130,246,.12);
}
.quiz-option:has(input:checked) .quiz-choice-badge {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  border-color: transparent;
}
#quizResult h3 {
  margin: 0 0 10px;
  font-size: 20px;
  color: #154074;
}
#quizResult p { margin: 0 0 8px; color: #49657f; }
#quizResult ol { margin: 14px 0 0 18px; padding: 0; }
#quizResult li { margin-bottom: 10px; color: #21405c; }

/* portal / account page */
body.account-page {
  background: radial-gradient(circle at top right, rgba(59,130,246,.10), transparent 30%), linear-gradient(180deg, #f8fbff 0%, #f3f8ff 100%);
}
.account-page .head-pill {
  background:#e7f1ff; color:#1d63d2; border-color:#cfe0ff;
}
.account-page .eyebrow,
.account-page .back-link,
.account-page .portal-message {
  color:#1f67da;
}
.account-page .panel {
  border-color:#dbe7f4;
  box-shadow:0 16px 35px rgba(37,99,235,.06);
}
.account-page .panel button.secondary {
  background:#edf4ff; color:#295ab1;
}

/* login page */
.login-page { background: #f4f8ff; }
.login-visual {
  background: radial-gradient(circle at 95% 12%, rgba(110,177,255,.28), transparent 28%), linear-gradient(160deg, #0d2d55 5%, #1d63ba 65%, #4195ff 100%);
}
.login-kicker { color:#d7e8ff; }
.pulse-dot { background:#cfe0ff; }
.login-visual h1 em { color: #d7e8ff; }
.login-card {
  border-color: #dce8f6;
  box-shadow: 0 20px 50px rgba(37,99,235,.10);
}
.login-register a { color:#2563eb; }

/* cli lab */
.top {
  background: linear-gradient(135deg, #0f2d52 0%, #185aad 100%);
}
.tag {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.12);
}
.back { color:#d6e7ff; }
body > main, .lab-context main, main {
  max-width: 1600px;
}
.steps > div { background:#f4f8ff; border:1px solid #dbe7f4; color:#21405c; }
.node.router rect { fill:#2468d5; }
.node.selected rect, .node.router:hover rect { fill:#3b82f6; stroke:#b9d5ff; }
.terminal {
  border-color:#10386b;
  box-shadow: 0 20px 40px rgba(8, 28, 58, .16);
}
.termhead { background: linear-gradient(135deg, #10315a 0%, #185aad 100%); }
.switch button.active { background:#3b82f6; }
.promptline { border-top-color:#224c80; }
.promptline label { color:#b8d5ff; }

/* sizing tweaks */
.topbar h2,
.hero h2,
.section-title h3,
.head h1,
.login-card h2 { letter-spacing:-.03em; }
@media (min-width: 900px) {
  .topbar { padding: 16px 24px; }
  .content { padding: 24px; }
  .hero h2 { font-size: clamp(26px, 3vw, 38px); }
}
@media (max-width: 700px) {
  .quiz-card { padding: 16px; }
  .quiz-option { grid-template-columns: 18px 30px minmax(0, 1fr); gap: 10px; padding: 14px; }
  .quiz-card legend, .quiz-legend { font-size: 16px; }
  .quiz-option-text { font-size: 13px; }
}

/* Avoid nested-scroll issues for the actual quiz while retaining page scrolling */
#quizForm { display:grid; grid-template-columns:minmax(0,1fr); }
#quizForm fieldset { min-width:0; }
#quizForm .quiz-option { width:100%; cursor:pointer; }
#quizForm .quiz-option input[type="radio"] { appearance:auto; padding:0; box-shadow:none; }
@media(max-width:480px){ #quizForm .quiz-option { grid-template-columns:18px 28px minmax(0,1fr); } }

}

/* sprint8 */
@scope (html[data-rl-css~="missions"]) {
/* Sprint 8 — calm Bootstrap-blue class mission UI; scoped to new elements. */
.rl8-board { padding: 22px; }
.rl8-board-header { display:flex; align-items:flex-start; justify-content:space-between; gap:18px; flex-wrap:wrap; margin-bottom:14px; }
.rl8-board-header h3 { margin:0 0 6px; color:#173a63; }
.rl8-board-header p { margin:0; }
.rl8-muted { font-size:13px; color:#647b93; line-height:1.6; }
.rl8-status { color:#506b85; font-size:13px; margin:8px 0 16px; line-height:1.6; }
.rl8-error { color:#ba2c45 !important; }
.rl8-mission-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.rl8-mission-card { padding:18px; background:#f9fbff; border:1px solid #dbe7f6; border-radius:16px; min-width:0; }
.rl8-mission-card h4 { color:#1a426c; font-size:17px; line-height:1.35; margin:14px 0 7px; }
.rl8-mission-card p { color:#526e88; font-size:13px; line-height:1.65; margin:0 0 16px; }
.rl8-card-top,.rl8-card-bottom { display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap; }
.rl8-kicker { font-size:12px; font-weight:800; color:#2769c5; letter-spacing:.015em; }
.rl8-pill { background:#fff5e2; color:#926212; border-radius:24px; font-size:11px; font-weight:800; padding:5px 10px; }
.rl8-done { background:#e4f6eb; color:#17663e; }
.rl8-small { font-size:12px; color:#698099; }
.rl8-small-button { text-decoration:none; font-size:12px; padding:9px 12px; min-height:36px; display:inline-flex; align-items:center; }
.rl8-assign-form { display:grid; grid-template-columns:minmax(190px,1fr) minmax(230px,1.35fr) auto; align-items:end; gap:12px; padding:16px; background:#f7faff; border:1px solid #dbe7f6; border-radius:16px; }
.rl8-field { display:flex; flex-direction:column; gap:7px; min-width:0; }
.rl8-field label { color:#34546f; font-weight:750; font-size:13px; }
.rl8-field select { min-height:44px; border:1px solid #cbdce9; background:white; color:#173a63; border-radius:11px; padding:10px 12px; width:100%; font:inherit; }
.rl8-assign-form button { min-height:44px; white-space:nowrap; }
.rl8-board .btn:disabled { opacity:.55; cursor:not-allowed; }
.rl8-management-header { margin-top:24px; border-top:1px solid #dbe7f6; padding-top:20px; }
.rl8-management-header h3 { margin-top:6px; }
.rl8-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }
.rl8-table { border-collapse:collapse; min-width:720px; width:100%; }
.rl8-table th { text-align:left; background:#f2f7ff; color:#345875; font-size:12px; font-weight:800; padding:13px; white-space:nowrap; }
.rl8-table td { border-bottom:1px solid #e4edf7; color:#3d5671; font-size:13px; padding:14px 13px; }
.rl8-table-button { font-size:12px; padding:7px 10px; white-space:nowrap; }
.rl8-lab-context { display:flex; flex-direction:column; gap:5px; padding:12px 14px; background:#f1f7ff; border:1px solid #cfe0f8; border-radius:12px; margin-bottom:14px; color:#164777; }
.rl8-lab-context strong { font-size:14px; }
.rl8-lab-context span { font-size:12px; line-height:1.55; }
/* Explicitly hide scenario walkthroughs in assigned diagnosis challenges. */
.guide-panel[hidden],.terminal-help[hidden] { display:none !important; }
@media(max-width:850px) { .rl8-assign-form {grid-template-columns:1fr 1fr;} .rl8-assign-form button {grid-column:1/-1;} }
@media(max-width:700px) { .rl8-mission-grid,.rl8-assign-form {grid-template-columns:1fr;} .rl8-board{padding:16px;} .rl8-assign-form button{grid-column:auto;} .rl8-board-header .btn{width:100%;} .rl8-mission-card{padding:15px;} }

}

/* Sprint 9: replace hard-coded RL glyph with the actual RoutingLab logo mark. */
.brand-mark:has(.brand-logo) { background: rgba(255,255,255,.96); overflow:hidden; display:flex; align-items:center; justify-content:center; padding:6px; }
.brand-mark .brand-logo { display:block; width:100%; height:100%; object-fit:contain; }
@media (prefers-reduced-motion: reduce) { .brand-mark .brand-logo { transition:none; } }