:root {
  --navy: #082a50;
  --navy2: #061d38;
  --gold: #d7ae4a;
  --ink: #102c49;
  --muted: #647689;
  --line: #dfe6ed;
  --soft: #eef2f6;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Arial, sans-serif;
}
a {
  color: inherit;
  text-decoration: none;
}
.tag {
  color: #a77a14;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.tag.light {
  color: #e5bf63;
}
.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 30px;
  background: var(--navy2);
}
.login-shell {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  width: min(1050px, 100%);
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 30px 90px #0005;
}
.login-brand {
  padding: 65px;
  background: var(--navy);
  color: #fff;
}
.login-brand h1 {
  margin: 20px 0;
  font:
    700 64px/1 Georgia,
    serif;
}
.login-brand p {
  max-width: 500px;
  color: #b9c6d0;
  font-size: 18px;
  line-height: 1.7;
}
.login-brand ul {
  margin: 35px 0 0;
  padding: 0;
  list-style: none;
}
.login-brand li {
  padding: 14px 0;
  border-top: 1px solid #ffffff1f;
  color: #d6dee5;
}
.login-brand li:before {
  content: "✓";
  margin-right: 12px;
  color: var(--gold);
}
.login-card {
  padding: 60px 50px;
  background: #fff;
}
.mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: var(--navy);
  color: var(--gold);
  font:
    700 24px Georgia,
    serif;
}
.login-card .tag {
  display: block;
  margin-top: 25px;
}
.login-card h2 {
  margin: 10px 0;
  font:
    700 37px Georgia,
    serif;
}
.login-card p {
  color: var(--muted);
  line-height: 1.5;
}
label {
  display: block;
  margin-top: 18px;
  color: #334e68;
  font-size: 13px;
  font-weight: 700;
}
input {
  width: 100%;
  height: 49px;
  margin-top: 8px;
  padding: 0 13px;
  border: 1px solid #c8d4df;
  border-radius: 10px;
  font:
    16px Arial,
    sans-serif;
}
input:focus {
  outline: 0;
  border-color: #b38721;
  box-shadow: 0 0 0 3px #d7ae4a2d;
}
button {
  width: 100%;
  min-height: 52px;
  margin-top: 25px;
  border: 0;
  border-radius: 10px;
  background: var(--gold);
  color: var(--navy);
  font-weight: 800;
  cursor: pointer;
}
.alert {
  margin: 18px 0;
  padding: 13px;
  border-radius: 9px;
  background: #fff0ed;
  color: #9c392f;
}
.back {
  display: block;
  margin-top: 24px;
  color: #53708a;
  font-size: 13px;
}
.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 265px 1fr;
}
.side {
  position: sticky;
  top: 0;
  height: 100vh;
  min-height: 0;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  padding: 28px 22px;
  overflow-x: hidden;
  overflow-y: scroll;
  scrollbar-width: auto;
  scrollbar-color: var(--gold) #0a2948;
  background: var(--navy2);
  color: #fff;
}
.side::-webkit-scrollbar { width: 10px; }
.side::-webkit-scrollbar-track { background: #0a2948; }
.side::-webkit-scrollbar-thumb { border: 2px solid #0a2948; border-radius: 10px; background: var(--gold); }
.side-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.side-brand i {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: var(--gold);
  color: var(--navy);
  font:
    700 21px Georgia,
    serif;
}
.side-brand span {
  font-weight: 700;
}
.side-brand small,
.profile small {
  display: block;
  margin-top: 4px;
  color: #8fa4b4;
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.profile {
  flex-shrink: 0;
  margin: 24px 0 16px;
  padding: 14px 16px;
  border: 1px solid #ffffff18;
  border-radius: 14px;
  background: #ffffff09;
}
.profile small {
  font-size: 10px;
}
.side nav {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-right: 3px;
  overflow: visible;
}
.side nav a {
  flex-shrink: 0;
  padding: 10px 13px;
  border-radius: 9px;
  color: #e1e8ee;
  font-size: 14px;
}
.side nav a.active,
.side nav a:hover {
  background: #ffffff12;
  color: #fff;
}
.logout {
  flex-shrink: 0;
  margin-top: 12px;
  padding-top: 16px;
  padding-right: 14px;
  padding-bottom: 8px;
  padding-left: 14px;
  border-top: 1px solid #ffffff25;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
}
.main {
  padding: 65px max(5vw, 40px);
}
.main h1 {
  margin: 10px 0;
  font:
    700 48px Georgia,
    serif;
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 38px;
}
.metrics article {
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: #fff;
}
.metrics b {
  display: block;
  font:
    700 34px Georgia,
    serif;
}
.metrics span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}
.welcome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 28px;
  padding: 38px;
  border-radius: 22px;
  background: var(--navy);
  color: #fff;
}
.welcome h2 {
  margin: 12px 0;
  font:
    700 30px Georgia,
    serif;
}
.welcome p {
  max-width: 720px;
  color: #b9c6d0;
  line-height: 1.7;
}
.welcome > b {
  color: var(--gold);
  font:
    700 75px Georgia,
    serif;
}
.mobile-head {
  display: none;
}
.campus-notice {
  margin-top: 22px;
  padding: 14px;
  border-radius: 10px;
}
.campus-notice.success {
  background: #e7f5ed;
  color: #276d50;
}
.campus-notice.error {
  background: #fff0ed;
  color: #9c392f;
}
.manage-grid,
.records-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 32px;
}
.manage-card,
.records-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.manage-card h2,
.records-head h2 {
  margin: 0 0 20px;
  font:
    700 25px Georgia,
    serif;
}
.manage-card .two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.manage-card select,
.manage-card textarea {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  border: 1px solid #c8d4df;
  border-radius: 10px;
  background: #fff;
  font:
    15px Arial,
    sans-serif;
}
.manage-card select {
  height: 49px;
}
.manage-card textarea {
  min-height: 92px;
  resize: vertical;
}
.records-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.records-head > b {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: #f5f0e3;
  color: #a77b17;
}
.record {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.record small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
}
.record em {
  color: #287252;
  font-size: 11px;
  font-style: normal;
  font-weight: 800;
}
.empty-note {
  color: var(--muted);
}
.user-create,
.users-card {
  margin-top: 30px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.user-create h2,
.users-card h2 {
  margin: 0 0 22px;
  font:
    700 25px Georgia,
    serif;
}
.user-form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.user-form-grid select {
  width: 100%;
  height: 49px;
  margin-top: 8px;
  padding: 0 12px;
  border: 1px solid #c8d4df;
  border-radius: 10px;
  background: #fff;
  font:
    15px Arial,
    sans-serif;
}
.filters {
  display: flex;
  gap: 7px;
}
.filters a {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}
.users-table {
  overflow-x: auto;
}
.user-row {
  display: grid;
  grid-template-columns: 1.4fr 0.65fr 0.65fr 0.9fr 0.6fr 0.6fr;
  gap: 14px;
  align-items: center;
  min-width: 980px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.user-row small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
}
.user-labels {
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}
.account-status {
  display: inline-flex;
  padding: 6px 9px;
  border-radius: 18px;
  font-size: 10px;
  font-style: normal;
  font-weight: 800;
}
.account-status.on {
  background: #e4f5eb;
  color: #287252;
}
.account-status.off {
  background: #fff0ed;
  color: #9c392f;
}
.small-button {
  min-height: 34px;
  margin: 0;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 11px;
}
.assignment-create,
.assignments-card {
  margin-top: 30px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.assignment-create h2,
.assignments-card h2 {
  margin: 0 0 22px;
  font:
    700 25px Georgia,
    serif;
}
.assignment-form {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
.assignment-form select,
.inline-form select {
  width: 100%;
  height: 49px;
  margin-top: 8px;
  padding: 0 12px;
  border: 1px solid #c8d4df;
  border-radius: 10px;
  background: #fff;
  font:
    14px Arial,
    sans-serif;
}
.assignments-table {
  overflow-x: auto;
}
.assignment-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 0.45fr;
  gap: 16px;
  align-items: center;
  min-width: 850px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.assignment-row small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
}
.assignment-labels {
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}
.inline-form select {
  height: 40px;
  margin: 0;
}
.remove-button {
  min-height: 36px;
  margin: 0;
  padding: 0 11px;
  background: #fff0ed;
  color: #9c392f;
  font-size: 11px;
}
.enroll-create,
.enrollments-card {
  margin-top: 30px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.enroll-create h2,
.enrollments-card h2 {
  margin: 0 0 22px;
  font:
    700 25px Georgia,
    serif;
}
.enroll-form {
  display: grid;
  grid-template-columns: 1.25fr 1fr 0.75fr;
  gap: 16px;
}
.enroll-form select {
  width: 100%;
  height: 49px;
  margin-top: 8px;
  padding: 0 12px;
  border: 1px solid #c8d4df;
  border-radius: 10px;
  background: #fff;
  font:
    14px Arial,
    sans-serif;
}
.empty-warning {
  padding: 18px;
  border-radius: 11px;
  background: #fff5d9;
  color: #80631c;
  font-size: 14px;
}
.enroll-table {
  overflow-x: auto;
}
.enroll-row {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.55fr 0.7fr 0.4fr;
  gap: 16px;
  align-items: center;
  min-width: 900px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.enroll-row small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
}
.enroll-labels {
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}
.class-create,
.classes-section {
  margin-top: 30px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.class-create h2,
.classes-section h2 {
  margin: 0 0 22px;
  font:
    700 25px Georgia,
    serif;
}
.class-create form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.class-create form > label {
  margin: 0;
}
.class-create form > label:nth-of-type(3),
.class-create form > label:nth-of-type(4),
.class-create form > label:nth-of-type(5),
.class-create form > .publish-check,
.class-create form > button {
  grid-column: 1 / -1;
}
.class-create form > button {
  margin-top: 0;
}
.class-create select,
.class-create textarea {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  border: 1px solid #c8d4df;
  border-radius: 10px;
  background: #fff;
  font:
    15px Arial,
    sans-serif;
}
.class-create select {
  height: 49px;
}
.class-create textarea {
  min-height: 90px;
  resize: vertical;
}
.class-create .content-area {
  min-height: 220px;
}
.publish-check {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}
.publish-check input {
  width: 18px;
  height: 18px;
  margin: 0;
}
.classes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.class-card {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
}
.class-card > div:first-child,
.class-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.class-subject {
  color: #a77a14;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.class-state {
  padding: 5px 8px;
  border-radius: 15px;
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}
.class-state.published {
  background: #e4f5eb;
  color: #287252;
}
.class-state.draft {
  background: #fff5d9;
  color: #80631c;
}
.class-card h3 {
  margin: 18px 0 8px;
  font:
    700 21px Georgia,
    serif;
}
.class-card p {
  flex: 1;
  color: var(--muted);
  line-height: 1.55;
}
.class-card > small {
  color: var(--muted);
  line-height: 1.5;
}
.class-actions {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.class-actions > a {
  color: #1d5684;
  font-size: 12px;
  font-weight: 800;
}
.lesson-page {
  min-height: 100vh;
  background: #eef2f6;
}
.lesson-top {
  display: flex;
  justify-content: space-between;
  padding: 22px max(5vw, 24px);
  background: var(--navy2);
  color: #fff;
  font-size: 13px;
}
.lesson {
  width: min(900px, calc(100% - 36px));
  margin: 45px auto 80px;
  padding: 50px;
  border: 1px solid var(--line);
  border-radius: 25px;
  background: #fff;
  box-shadow: 0 22px 60px #082a5012;
}
.lesson h1 {
  margin: 16px 0;
  font:
    700 clamp(37px, 5vw, 54px) / 1.08 Georgia,
    serif;
}
.lesson-summary {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}
.lesson-meta {
  margin: 25px 0;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.lesson-content {
  font-size: 17px;
  line-height: 1.85;
}
.video-link {
  display: inline-flex;
  margin-top: 30px;
  padding: 13px 17px;
  border-radius: 9px;
  background: var(--gold);
  color: var(--navy);
  font-weight: 800;
}
.materials {
  margin-top: 40px;
}
.materials h2 {
  font:
    700 26px Georgia,
    serif;
}
.materials a {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.materials span {
  color: var(--muted);
  font-size: 12px;
}
.material-create{margin-top:40px;padding:26px;border:1px solid var(--line);border-radius:18px;background:#f7f9fb}.material-create h2{margin:0 0 20px;font:700 25px Georgia,serif}.material-create form{display:grid;grid-template-columns:1fr 1fr;gap:16px}.material-create form>label{margin:0}.material-create select{width:100%;height:49px;margin-top:8px;padding:12px;border:1px solid #c8d4df;border-radius:10px;background:#fff}.material-create input[type=file]{padding:11px;background:#fff}.material-create label small{display:block;margin-top:7px;color:var(--muted);font-size:11px}.material-wide,.material-create button{grid-column:1/-1}.material-create button{margin-top:0}
.subjects-section{margin-top:30px;padding:28px;border:1px solid var(--line);border-radius:20px;background:#fff}.subjects-section h2{margin:0;font:700 25px Georgia,serif}.subjects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:16px}.subject-card{padding:23px;border:1px solid var(--line);border-radius:17px}.subject-card>span{color:#a77a14;font-size:10px;font-weight:800;text-transform:uppercase}.subject-card h3{margin:12px 0 8px;font:700 22px Georgia,serif}.subject-card>p{min-height:38px;color:var(--muted);font-size:13px}.subject-counts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.subject-counts>b{padding:12px;border-radius:11px;background:#f3f6f9;font-size:20px}.subject-counts small{display:block;margin-top:3px;color:var(--muted);font-size:10px;text-transform:uppercase}.subject-links{display:flex;gap:10px;padding-top:15px;border-top:1px solid var(--line)}.subject-links a{color:#1d5684;font-size:12px;font-weight:800}
.activity-create,.activities-section{margin-top:30px;padding:28px;border:1px solid var(--line);border-radius:20px;background:#fff}
.activity-create h2,.activities-section h2{margin:0 0 22px;font:700 25px Georgia,serif}
.activity-create form{display:grid;grid-template-columns:1fr 1fr;gap:18px}.activity-create form>label{margin:0}
.activity-create select,.activity-create textarea{width:100%;margin-top:8px;padding:12px;border:1px solid #c8d4df;border-radius:10px;background:#fff;font:15px Arial,sans-serif}.activity-create select{height:49px}.activity-create textarea{min-height:190px;resize:vertical}
.activity-description,.activity-create .publish-check,.activity-create form>button{grid-column:1/-1}
.activities-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.activity-card{display:flex;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:16px}.activity-card>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px}.activity-card h3{margin:18px 0 8px;font:700 21px Georgia,serif}.activity-card>p{flex:1;color:var(--muted);line-height:1.55}.activity-card dl{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}.activity-card dl div{padding:10px;border-radius:10px;background:#f3f6f9}.activity-card dt{color:var(--muted);font-size:10px;font-weight:800;text-transform:uppercase}.activity-card dd{margin:5px 0 0;font-size:12px;font-weight:800}.activity-card>small{color:var(--muted);line-height:1.5}.activity-card .class-actions>span{color:var(--muted);font-size:12px;font-weight:700}
.activity-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:25px 0}.activity-meta span{padding:15px;border-radius:12px;background:#f3f6f9;color:var(--muted)}.activity-meta b{display:block;margin-bottom:5px;color:var(--navy);font-size:11px;text-transform:uppercase}.activity-page>h2{margin-top:32px;font:700 26px Georgia,serif}.submission-box,.submissions{margin-top:40px;padding-top:30px;border-top:1px solid var(--line)}.submission-box form,.grade-form{display:grid;gap:16px}.submission-box textarea,.grade-form textarea{min-height:160px;resize:vertical}.submission-status{color:var(--muted);font-size:13px}.grade-result{padding:20px;border-radius:14px;background:#e7f5ed;color:#225d45}.grade-result p{margin-bottom:0;line-height:1.65}.submission-card{margin-top:18px;padding:22px;border:1px solid var(--line);border-radius:16px}.submission-student{display:flex;justify-content:space-between;gap:15px}.submission-student h3{margin:0 0 5px}.submission-student small{color:var(--muted)}.student-answer{margin:18px 0;padding:18px;border-radius:12px;background:#f4f7fa;line-height:1.65}.file-link{display:inline-flex;margin-bottom:18px;color:#1d5684;font-weight:800}.grade-form{display:grid;grid-template-columns:150px 1fr;gap:16px}.grade-form button{grid-column:1/-1}.grade-form textarea{min-height:100px}
.grade-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:30px}.grade-summary article{padding:24px;border:1px solid var(--line);border-radius:18px;background:#fff}.grade-summary b{display:block;color:var(--navy);font:700 34px Georgia,serif}.grade-summary span{color:var(--muted);font-size:12px}.grades-card{margin-top:24px;padding:28px;border:1px solid var(--line);border-radius:20px;background:#fff}.grades-card h2{margin:0;font:700 25px Georgia,serif}.grade-row{display:grid;grid-template-columns:minmax(230px,1.1fr) 140px minmax(250px,1fr) auto;gap:20px;align-items:center;padding:22px 0;border-top:1px solid var(--line)}.grade-main small{color:#a77a14;font-size:10px;font-weight:800;text-transform:uppercase}.grade-main h3{margin:7px 0;font:700 19px Georgia,serif}.grade-main p,.grade-feedback p{margin:0;color:var(--muted);font-size:13px;line-height:1.5}.grade-score{padding:12px;border-radius:12px;background:#e7f5ed;text-align:center}.grade-score b,.grade-score span{display:block}.grade-score span{margin-top:4px;color:#287252;font-size:12px;font-weight:800}.grade-feedback>b{display:block;margin-bottom:5px;font-size:11px;text-transform:uppercase}.grade-row>a{color:#1d5684;font-size:12px;font-weight:800;white-space:nowrap}
.calendar-card{margin-top:30px;padding:28px;border:1px solid var(--line);border-radius:20px;background:#fff}.calendar-card h2{margin:0;font:700 25px Georgia,serif}.timeline-event{display:grid;grid-template-columns:85px 1fr auto;gap:20px;align-items:center;padding:20px 0;border-top:1px solid var(--line)}.timeline-event time{padding:12px;border-radius:14px;background:#f3f6f9;text-align:center}.timeline-event time b,.timeline-event time span,.timeline-event time small{display:block}.timeline-event time b{font:700 28px Georgia,serif}.timeline-event time span{font-size:11px;font-weight:800;text-transform:uppercase}.timeline-event time small{margin-top:4px;color:var(--muted)}.timeline-event.deadline time{background:#fff3d5;color:#73550f}.timeline-event.lesson-event time{background:#e9f2fa;color:#174d79}.event-type{color:#a77a14;font-size:10px;font-weight:800;text-transform:uppercase}.timeline-event h3{margin:6px 0;font:700 19px Georgia,serif}.timeline-event p{margin:0;color:var(--muted);font-size:13px}.timeline-event>a{color:#1d5684;font-size:12px;font-weight:800}
@media (max-width: 900px) {
  .login-shell {
    grid-template-columns: 1fr;
  }
  .login-brand {
    display: none;
  }
  .app {
    display: block;
  }
  .side {
    display: none;
  }
  .mobile-head {
    display: flex;
    justify-content: space-between;
    margin: -25px -10px 40px;
    padding: 18px;
    background: var(--navy2);
    color: #fff;
  }
  .metrics {
    grid-template-columns: 1fr 1fr;
  }
  .manage-grid,
  .records-grid {
    grid-template-columns: 1fr;
  }
  .user-form-grid {
    grid-template-columns: 1fr 1fr;
  }
  .assignment-form {
    grid-template-columns: 1fr;
  }
  .enroll-form {
    grid-template-columns: 1fr;
  }
  .classes-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
  .activities-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
  .grade-row{grid-template-columns:1fr 120px}.grade-feedback{grid-column:1/-1}.grade-row>a{grid-column:1/-1}.timeline-event{grid-template-columns:75px 1fr}.timeline-event>a{grid-column:2}
  .main {
    padding: 40px 25px;
  }
}
@media (max-width: 520px) {
  .login-body {
    padding: 15px;
  }
  .login-card {
    padding: 38px 25px;
  }
  .metrics {
    grid-template-columns: 1fr;
  }
  .user-form-grid {
    grid-template-columns: 1fr;
  }
  .welcome {
    align-items: flex-start;
    flex-direction: column;
  }
  .welcome > b {
    font-size: 50px;
  }
  .classes-grid {
    grid-template-columns: 1fr;
  }
  .class-create form {
    grid-template-columns: 1fr;
  }
  .class-create form > label,
  .class-create form > button {
    grid-column: 1;
  }
  .activity-create form{grid-template-columns:1fr}.activity-create form>label,.activity-create form>button{grid-column:1}
  .activity-meta,.grade-form,.grade-summary{grid-template-columns:1fr}.grade-form button{grid-column:1}.grade-row{grid-template-columns:1fr}.grade-feedback,.grade-row>a{grid-column:1}.timeline-event{grid-template-columns:65px 1fr;gap:12px}.timeline-event>a{grid-column:1/-1}
  .lesson {
    padding: 30px 22px;
  }
  .material-create form{grid-template-columns:1fr}.material-create form>label,.material-create button{grid-column:1}
}
/* Corrección definitiva del menú lateral */
@media (min-width: 901px) {
  .app {
    display: block;
    min-height: 100vh;
  }

  .side {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 265px;
    height: auto;
    box-sizing: border-box;
    overflow-x: hidden;
    overflow-y: auto;
    background: #0b3155;
    color: #ffffff;
    scrollbar-color: #ddb349 #0b3155;
    scrollbar-width: auto;
    z-index: 100;
  }

  .side nav {
    display: flex;
    flex-direction: column;
    flex: none;
    overflow: visible;
  }

  .side nav a {
    color: #ffffff;
    opacity: 1;
  }

  .side nav a:hover,
  .side nav a.active {
    background: rgba(255, 255, 255, 0.14);
    color: #ffffff;
  }

  .logout {
    margin-top: 15px;
    padding-top: 18px;
    color: #ffffff;
    opacity: 1;
  }

  .main {
    margin-left: 265px;
    min-height: 100vh;
  }

  .side::-webkit-scrollbar {
    width: 12px;
  }

  .side::-webkit-scrollbar-track {
    background: #0b3155;
  }

  .side::-webkit-scrollbar-thumb {
    background: #ddb349;
    border: 3px solid #0b3155;
    border-radius: 10px;
  }
}
.metrics article{
  position:relative;
}

.metrics article a.metric-link{
  position:absolute;
  inset:0;
  border-radius:inherit;
  font-size:0;
}

.metrics article:hover{
  transform:translateY(-3px);
  box-shadow:0 12px 30px rgba(17,61,104,.14);
}