:root {
  --bg: #edf1f6;
  --panel: #f7f9fc;
  --card: #ffffff;
  --ink: #111827;
  --muted: #637084;
  --text-soft: #3d4a5f;
  --text-strong: #1b3152;
  --line: #d9e2ee;
  --brand: #173f73;
  --brand-strong: #12345e;
  --bg-gradient-start: #eef2f7;
  --bg-gradient-end: #e9eef4;
  --control-bg: #f5f8fc;
  --control-bg-muted: #e9eff7;
  --surface-raise: #ecf1f8;
  --surface-soft: #f8fbff;
  --field-bg: #ffffff;
  --field-border: #d1dceb;
  --field-text: #1f2a3a;
  --dropzone-bg: #f4f8fd;
  --dropzone-border: #c5d2e5;
  --dropzone-icon: #8da0bd;
  --sidecard-grad-1: #234c82;
  --sidecard-grad-2: #18395f;
  --sidecard-grad-3: #132a45;
  --sidecard-text: #dbe8fa;
  --sidecard-note: #c7dcfa;
  --sidecard-pill-border: rgba(211, 228, 249, 0.35);
  --sidecard-pill-bg: rgba(255, 255, 255, 0.08);
  --tag-note-bg: #c9f0d7;
  --tag-note-text: #2f7b4c;
  --tag-syllabus-bg: #d8e5ff;
  --tag-syllabus-text: #315f99;
  --tag-paper-bg: #ffe3c6;
  --tag-paper-text: #8b5920;
  --danger-bg: #fdeeee;
  --danger-text: #8e2f2f;
  --danger-line: #f2caca;
  --success-bg: #e7f7ee;
  --success-text: #256240;
  --success-line: #b9e2c8;
}

body[data-theme="dark"] {
  --bg: #0f1724;
  --panel: #111c2c;
  --card: #172335;
  --ink: #e6edf8;
  --muted: #b7c3d8;
  --text-soft: #c3cee0;
  --text-strong: #dbe7fb;
  --line: #2a3a52;
  --brand: #6fa9ff;
  --brand-strong: #4d8ce8;
  --bg-gradient-start: #0e1520;
  --bg-gradient-end: #0f1a29;
  --control-bg: #1a283b;
  --control-bg-muted: #223249;
  --surface-raise: #25344b;
  --surface-soft: #1b2a3f;
  --field-bg: #101c2d;
  --field-border: #2e435d;
  --field-text: #e6edf8;
  --dropzone-bg: #12243a;
  --dropzone-border: #37506e;
  --dropzone-icon: #9eb7da;
  --sidecard-grad-1: #2a4f84;
  --sidecard-grad-2: #1b3658;
  --sidecard-grad-3: #13273f;
  --sidecard-text: #e3edfb;
  --sidecard-note: #c9daf3;
  --sidecard-pill-border: rgba(190, 214, 244, 0.4);
  --sidecard-pill-bg: rgba(255, 255, 255, 0.1);
  --tag-note-bg: #2a4d3a;
  --tag-note-text: #b7efcb;
  --tag-syllabus-bg: #273f69;
  --tag-syllabus-text: #c2d8ff;
  --tag-paper-bg: #5e4027;
  --tag-paper-text: #ffd8b5;
  --danger-bg: #462020;
  --danger-text: #ffd0d0;
  --danger-line: #8f4d4d;
  --success-bg: #1f3d2a;
  --success-text: #c3f3d3;
  --success-line: #2d6d4a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(
    180deg,
    var(--bg-gradient-start) 0%,
    var(--bg-gradient-end) 100%
  );
  font-family: "Manrope", "Segoe UI", sans-serif;
}

html[data-theme="dark"] body,
body[data-theme="dark"] {
  background: linear-gradient(
    180deg,
    var(--bg-gradient-start) 0%,
    var(--bg-gradient-end) 100%
  );
}

*:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  background: var(--brand);
  color: #fff;
  padding: 10px 12px;
  border-radius: 8px;
  z-index: 9999;
  text-decoration: none;
}

.skip-link:focus {
  left: 12px;
}

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

a {
  color: inherit;
}

.page-shell {
  width: min(1180px, 94%);
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 2px;
}

body[data-theme="dark"] .topbar {
  background: rgba(14, 23, 35, 0.7);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 23px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  text-decoration: none;
}

.site-logo {
  width: 120px;
  height: 50px;
  display: block;
  object-fit: contain;
}

.main-nav {
  display: flex;
  gap: 18px;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 13px;
  padding-bottom: 6px;
}

.main-nav a.active {
  border-bottom: 2px solid var(--brand);
  color: var(--brand);
}

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

.inline-form {
  margin: 0;
}

.inline-form .join-btn,
.inline-form .admin-upload-btn {
  border: 0;
}

.icon-btn {
  border: 0;
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 14px;
  padding: 3px;
}

.theme-toggle-icon {
  width: 20px;
  height: 20px;
  display: block;
}

.secondary-btn {
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  min-height: 40px;
  padding: 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.sign-in {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 13px;
}

.join-btn {
  text-decoration: none;
  border-radius: 9px;
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 10px 15px;
}

.hero {
  padding: 10px 2px 18px;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--brand);
}

.hero h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-family: "Fraunces", Georgia, serif;
  font-style: italic;
  font-weight: 400;
}

.hero-copy {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 700px;
}

.upload-hero {
  padding-bottom: 12px;
}

.not-found-hero {
  margin: 0 auto;
  min-height: calc(100vh - 280px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.not-found-hero .hero-copy {
  margin-left: auto;
  margin-right: auto;
}

.not-found-hero .resource-actions {
  width: min(760px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.public-upload-wrap {
  padding: 0 2px 42px;
}

.public-upload-form {
  max-width: 900px;
}

.contribution-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
}

.contribution-role,
.contribution-time {
  margin: 0;
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  padding: 7px 10px;
  border-radius: 999px;
}

.public-upload-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 16px;
  align-items: start;
}

.contribution-form {
  border-radius: 14px;
  padding: 18px;
  gap: 14px;
  box-shadow: 0 14px 35px rgba(14, 34, 63, 0.08);
}

.form-section-head h2,
.form-section-head h3 {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.form-section-head h3 {
  font-size: 15px;
}

.form-section-head p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.form-section-head.compact {
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

.contribution-dropzone {
  min-height: 154px;
}

.contribution-submit-row {
  padding-top: 6px;
}

.contribution-sidecard {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: radial-gradient(
    circle at top right,
    var(--sidecard-grad-1) 0,
    var(--sidecard-grad-2) 45%,
    var(--sidecard-grad-3) 100%
  );
  color: var(--sidecard-text);
  padding: 16px;
  display: grid;
  gap: 12px;
  position: sticky;
  top: 84px;
}

.contribution-sidecard h3 {
  margin: 0;
  color: #fff;
  font-size: 20px;
}

.contribution-sidecard ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.contribution-sidecard li {
  font-size: 13px;
  line-height: 1.5;
}

.contribution-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.contribution-pills span {
  border: 1px solid var(--sidecard-pill-border);
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 10px;
  letter-spacing: 0.05em;
  background: var(--sidecard-pill-bg);
}

.contribution-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--sidecard-note);
}

.search-panel {
  padding: 0 2px;
}

.sticky-filters {
  position: sticky;
  top: 0;
  z-index: 12;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  padding-top: 8px;
}

.search-wrap {
  display: flex;
  align-items: center;
  min-height: 58px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--control-bg);
  padding: 0 16px;
}

.search-icon {
  color: var(--muted);
  margin-right: 10px;
}

.search-wrap input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 16px;
}

.filters-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 0;
}

.filter-chip {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--control-bg);
  color: var(--ink);
  min-height: 38px;
  padding: 0 10px;
  font-size: 13px;
}

.filter-apply,
.filter-reset {
  border: 0;
  border-radius: 8px;
  min-height: 38px;
  padding: 0 14px;
  font-size: 13px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.filter-apply {
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}

.filter-reset {
  background: var(--control-bg-muted);
  color: var(--brand);
}

.results-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 18px;
  padding: 20px 2px 48px;
}

.resource-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card);
  padding: 16px;
}

.resource-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}

.resource-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.doc-icon {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-raise);
}

.tag {
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  padding: 5px 9px;
  letter-spacing: 0.08em;
}

.tag.green {
  background: var(--tag-note-bg);
  color: var(--tag-note-text);
}

.tag.blue {
  background: var(--tag-syllabus-bg);
  color: var(--tag-syllabus-text);
}

.tag.amber {
  background: var(--tag-paper-bg);
  color: var(--tag-paper-text);
}

.resource-card h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
}

.resource-subject {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.resource-tags {
  margin: 10px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.resource-tags span {
  display: inline-block;
  border-radius: 999px;
  background: var(--control-bg-muted);
  color: var(--muted);
  font-size: 11px;
  padding: 4px 8px;
}

.resource-meta {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.download-btn {
  margin-top: 12px;
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  min-height: 40px;
  padding: 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.empty-state {
  margin: 22px 2px 48px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  text-align: center;
  padding: 34px;
}

.empty-state h3 {
  margin: 0;
  font-size: 24px;
}

.empty-state p {
  margin: 10px 0 16px;
  color: var(--muted);
}

.page-footer {
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding: 32px 2px;
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0;
  font-size: 24px;
  color: var(--text-strong);
  font-weight: 700;
}

.footer-links {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.footer-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.copyright {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.15em;
}

.admin-login-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(
    135deg,
    var(--bg-gradient-start) 0%,
    var(--bg) 48%,
    var(--bg-gradient-end) 100%
  );
}

.admin-login-topbar {
  width: min(1180px, 94%);
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.admin-login-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.admin-login-nav {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-left: auto;
}

.admin-login-nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1;
}

.admin-login-main {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 24px 14px;
}

.admin-login-card {
  width: min(460px, 95vw);
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card);
  padding: 30px;
  box-shadow: 0 18px 40px rgba(23, 45, 79, 0.08);
}

.admin-login-card h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.02em;
}

.admin-login-subtitle {
  margin: 8px 0 22px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-align: center;
}

.form-error {
  margin: 0 0 12px;
  color: var(--danger-text);
  background: var(--danger-bg);
  border: 1px solid var(--danger-line);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
}

.admin-login-form {
  display: grid;
  gap: 16px;
}

.admin-login-field {
  border-bottom: 1px solid var(--field-border);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 9px;
}

.admin-login-field input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--field-text);
  font-size: 17px;
}

.admin-primary-btn {
  border: 0;
  border-radius: 9px;
  min-height: 46px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.admin-secondary-btn {
  background: var(--control-bg-muted);
  color: var(--brand);
  padding: 10px;
  text-align: center;
}

.google-auth-btn {
  min-height: 54px;
  border-radius: 2px;
  border: 1px solid #4285f4;
  background: #4285f4;
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0;
  width: 100%;
  font-size: 15px;
  font-weight: 500;
  font-family: Roboto, Arial, sans-serif;
  letter-spacing: 0;
  overflow: hidden;
}

.google-auth-icon {
  width: 54px;
  min-width: 54px;
  height: 54px;
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.google-auth-icon img {
  width: 20px;
  height: 20px;
  display: block;
}

.google-auth-text {
  flex: 1;
  text-align: center;
  padding: 0 16px;
  font-size: 16px;
  line-height: 1;
}

body[data-theme="dark"] .google-auth-btn {
  background: #4285f4;
  border-color: #4285f4;
  color: #fff;
}

.admin-link-lite {
  display: block;
  margin-top: 14px;
  text-align: center;
  color: var(--brand);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.admin-login-meta {
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.meta-line {
  width: 26px;
  height: 1px;
  background: var(--line);
}

.admin-login-footer {
  text-align: center;
  padding: 18px 10px 24px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.admin-login-footer p {
  margin: 8px 0;
}

.admin-login-footer a {
  color: var(--text-soft);
  text-decoration: none;
  margin: 0 8px;
}

.admin-dashboard-body {
  margin: 0;
  background: var(--bg);
}

.admin-dashboard-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
}

.admin-sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.admin-sidebar-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.admin-sidebar-title {
  margin: 12px 0 0;
  font-size: 18px;
  font-weight: 700;
}

.admin-sidebar-subtitle {
  margin: 4px 0 16px;
  color: var(--muted);
  font-size: 12px;
}

.admin-sidebar-nav {
  display: grid;
  gap: 7px;
}

.admin-sidebar-nav a {
  text-decoration: none;
  color: var(--text-soft);
  border-radius: 8px;
  padding: 10px;
  font-size: 13px;
}

.as-link {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text-soft);
  border-radius: 8px;
  padding: 10px;
  font-size: 13px;
  cursor: pointer;
}

.admin-sidebar-nav a.active {
  background: var(--control-bg-muted);
  color: var(--brand);
  font-weight: 700;
}

.as-link:hover {
  background: var(--control-bg-muted);
  color: var(--brand);
}

.admin-sidebar-bottom {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  display: grid;
  gap: 10px;
}

.admin-sidebar-bottom > a {
  text-decoration: none;
  color: var(--muted);
  font-size: 13px;
}

.admin-status-box {
  border-radius: 8px;
  background: var(--control-bg);
  padding: 10px;
  display: grid;
  gap: 4px;
}

.admin-status-box strong {
  font-size: 11px;
  letter-spacing: 0.08em;
}

.admin-status-box span {
  color: var(--success-text);
  font-size: 11px;
}

.admin-main-wrap {
  padding: 14px 16px 24px;
}

.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.admin-top-logo {
  display: none;
  text-decoration: none;
}

.admin-top-links {
  display: flex;
  gap: 18px;
}

.admin-top-links a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 13px;
  padding-bottom: 5px;
}

.admin-top-links a.active {
  color: var(--brand);
  border-bottom: 2px solid var(--brand);
  font-weight: 700;
}

.admin-top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-icon-btn {
  width: 28px;
  height: 28px;
  border: 0;
  background: transparent;
  color: #4e5b70;
}

.admin-upload-btn {
  text-decoration: none;
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 10px 14px;
}

.admin-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
}

.admin-form-column h1 {
  margin: 0;
  font-size: 32px;
  letter-spacing: -0.02em;
}

.admin-form-column > p {
  margin: 8px 0 14px;
  color: var(--muted);
  font-size: 15px;
}

.admin-alert-stack {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.admin-alert {
  margin: 0;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
}

.admin-alert.success {
  background: var(--success-bg);
  border: 1px solid var(--success-line);
  color: var(--success-text);
}

.admin-alert.error {
  background: var(--danger-bg);
  border: 1px solid var(--danger-line);
  color: var(--danger-text);
}

.admin-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(100px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.metric-card {
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  padding: 10px;
  display: grid;
  gap: 6px;
}

.metric-card span {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.metric-card strong {
  color: var(--brand);
  font-size: 20px;
  line-height: 1;
}

.admin-upload-form {
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
  padding: 16px;
  display: grid;
  gap: 12px;
}

.admin-field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.admin-upload-form label {
  display: grid;
  gap: 6px;
}

.admin-upload-form span {
  color: var(--text-soft);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.admin-upload-form input,
.admin-upload-form select,
.admin-upload-form textarea {
  border: 1px solid var(--field-border);
  border-radius: 8px;
  background: var(--field-bg);
  color: var(--field-text);
  min-height: 40px;
  padding: 0 10px;
  font-size: 13px;
}

.admin-dropzone {
  border: 1px dashed var(--dropzone-border);
  border-radius: 10px;
  background: var(--dropzone-bg);
  min-height: 130px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 14px;
}

.admin-drop-icon {
  font-size: 20px;
  color: var(--dropzone-icon);
}

.admin-dropzone p {
  margin: 4px 0;
  font-weight: 700;
}

.admin-dropzone small {
  color: var(--muted);
}

.dropzone-file-label {
  margin-top: 8px;
  cursor: pointer;
}

.dropzone-file-label > span {
  color: var(--brand);
  text-decoration: underline;
  font-size: 12px;
}

.dropzone-file-input {
  display: block;
  width: 100%;
  margin-bottom: 8px;
}

.dropzone-helper {
  margin-top: 4px;
  font-size: 11px;
}

.admin-form-actions {
  display: flex;
  justify-content: flex-end;
}

.admin-submit-btn {
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  min-height: 42px;
  padding: 0 16px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.resource-admin-table {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
}

.resource-admin-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}

.resource-admin-head h2 {
  margin: 0;
  font-size: 18px;
}

.resource-admin-head span {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

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

.table-edit-btn {
  min-height: 30px;
  font-size: 11px;
  padding: 0 10px;
}

.admin-edit-wrap {
  width: min(1160px, 94%);
  margin: 0 auto;
  padding: 18px 0 30px;
}

.admin-edit-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.admin-logo-link {
  text-decoration: none;
}

.admin-edit-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.admin-edit-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
}

.admin-edit-form {
  margin: 0;
}

.admin-edit-form-grid {
  display: grid;
  gap: 12px;
}

.admin-edit-preview {
  margin-top: 0;
  align-self: start;
}

.admin-edit-preview-body {
  padding: 12px;
  display: grid;
  gap: 8px;
}

.admin-edit-preview-body p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.resource-table-wrap {
  overflow-x: auto;
}

.resource-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

.resource-table-wrap th,
.resource-table-wrap td {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  font-size: 12px;
  text-align: left;
}

.resource-table-wrap th {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.resource-table-wrap td a {
  color: var(--brand);
  text-decoration: none;
}

.delete-btn {
  border: 1px solid #efc5c5;
  border-radius: 7px;
  background: #fff2f2;
  color: #9a2f2f;
  min-height: 30px;
  padding: 0 10px;
  font-size: 12px;
  cursor: pointer;
}

.approve-btn {
  border: 1px solid #b4ddc2;
  border-radius: 7px;
  background: #ebf8f0;
  color: #1f6b42;
  min-height: 30px;
  padding: 0 10px;
  font-size: 12px;
  cursor: pointer;
}

.moderation-actions {
  display: grid;
  gap: 6px;
}

.moderation-actions form {
  display: flex;
  gap: 6px;
  align-items: center;
}

.moderation-actions input {
  border: 1px solid var(--field-border);
  border-radius: 6px;
  background: var(--field-bg);
  color: var(--field-text);
  min-height: 30px;
  padding: 0 8px;
  width: 170px;
  font-size: 12px;
}

.admin-feed-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.admin-feed-head h2 {
  margin: 0;
  font-size: 20px;
}

.admin-feed-head span {
  border-radius: 999px;
  background: var(--control-bg-muted);
  color: var(--brand);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.09em;
  padding: 4px 9px;
}

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

.admin-feed-item {
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 10px;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
}

.feed-icon {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  font-size: 13px;
}

.feed-icon.green {
  background: var(--tag-note-bg);
  color: var(--tag-note-text);
}

.feed-icon.blue {
  background: var(--tag-syllabus-bg);
  color: var(--tag-syllabus-text);
}

.feed-icon.amber {
  background: var(--tag-paper-bg);
  color: var(--tag-paper-text);
}

.admin-feed-item h3 {
  margin: 0;
  font-size: 13px;
}

.admin-feed-item p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.pill {
  display: inline-block;
  border-radius: 999px;
  padding: 2px 6px;
  margin-right: 6px;
  font-size: 9px;
  letter-spacing: 0.08em;
  font-weight: 800;
}

.pill.green {
  background: var(--tag-note-bg);
  color: var(--tag-note-text);
}

.pill.blue {
  background: var(--tag-syllabus-bg);
  color: var(--tag-syllabus-text);
}

.pill.amber {
  background: var(--tag-paper-bg);
  color: var(--tag-paper-text);
}

.admin-feed-empty {
  margin: 0;
  border-radius: 10px;
  border: 1px dashed var(--field-border);
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
  padding: 12px;
}

.admin-tips-box {
  margin-top: 12px;
  border-radius: 10px;
  background: radial-gradient(
    circle at right bottom,
    var(--sidecard-grad-1) 0,
    var(--sidecard-grad-2) 45%,
    var(--sidecard-grad-3) 100%
  );
  color: var(--sidecard-text);
  padding: 14px;
}

.admin-tips-box h3 {
  margin: 0;
  color: #fff;
  font-size: 22px;
}

.admin-tips-box p {
  margin: 10px 0;
  font-size: 13px;
  line-height: 1.5;
}

.admin-tips-box a {
  text-decoration: none;
  display: inline-block;
  border-radius: 6px;
  background: var(--panel);
  color: var(--brand);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 8px 10px;
}

.detail-hero {
  padding: 10px 2px 14px;
}

.detail-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
  padding: 6px 2px 22px;
}

.detail-preview-card,
.detail-meta-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  padding: 14px;
}

.detail-preview-card h2,
.detail-meta-card h2,
.detail-meta-card h3 {
  margin: 0 0 10px;
}

.preview-hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.pdf-frame {
  width: 100%;
  min-height: 620px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.meta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.meta-list li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.uploader-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.related-section {
  padding: 0 2px 40px;
}

.compact-grid {
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  padding-top: 12px;
}

@media (max-width: 1050px) {
  .resource-grid {
    grid-template-columns: repeat(2, minmax(220px, 1fr));
  }

  .public-upload-layout {
    grid-template-columns: 1fr;
  }

  .contribution-sidecard {
    position: static;
  }

  .admin-dashboard-shell {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .admin-content-grid {
    grid-template-columns: 1fr;
  }

  .admin-edit-main {
    grid-template-columns: 1fr;
  }

  .detail-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    flex-wrap: wrap;
  }

  .main-nav {
    width: 100%;
    overflow-x: auto;
    order: 3;
    padding-bottom: 6px;
  }

  .results-count {
    width: 100%;
    margin-left: 0;
  }

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

  .sticky-filters {
    top: 6px;
  }

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

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

  .pdf-frame {
    min-height: 420px;
  }

  .admin-login-topbar {
    flex-wrap: wrap;
  }

  .admin-field-grid {
    grid-template-columns: 1fr;
  }

  .contribution-form {
    padding: 14px;
  }

  .admin-metrics {
    grid-template-columns: repeat(2, minmax(100px, 1fr));
  }

  .table-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .admin-top-logo {
    display: inline-flex;
    text-decoration: none;
  }

  .admin-top-links {
    width: 100%;
    overflow-x: auto;
  }
}