:root {
  --bg: #080b10;
  --panel: rgba(18, 24, 34, .84);
  --panel-solid: #121822;
  --card: rgba(255, 255, 255, .06);
  --card-border: rgba(255, 255, 255, .11);
  --text: #eff6ff;
  --muted: #9aa7ba;
  --accent: #7dd3fc;
  --accent-2: #a78bfa;
  --danger: #fb7185;
  --good: #86efac;
  --shadow: 0 24px 80px rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(125, 211, 252, .15), transparent 32rem),
    radial-gradient(circle at 80% 10%, rgba(167, 139, 250, .14), transparent 30rem),
    linear-gradient(135deg, #070a0f, #0c1019 52%, #111827);
  color: var(--text);
}

a { color: inherit; }
button, input, textarea, select {
  font: inherit;
}
button {
  border: 0;
  cursor: pointer;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06101f;
  font-weight: 800;
  padding: 12px 16px;
}
button:disabled {
  opacity: .45;
  cursor: not-allowed;
}
input, textarea, select {
  width: 100%;
  background: rgba(255,255,255,.08);
  color: var(--text);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 12px 14px;
  outline: none;
}
textarea { min-height: 110px; resize: vertical; }
label { display: grid; gap: 8px; color: var(--muted); }

.login-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 20px;
}
.login-shell {
  width: min(100%, 440px);
}
.login-card, .card, .file-card, .stat-card {
  background: var(--panel);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
  border-radius: 30px;
}
.login-card {
  padding: 32px;
}
.brand-mark {
  width: 50px;
  height: 50px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05101d;
  font-weight: 950;
  letter-spacing: -.06em;
}
.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .76rem;
  font-weight: 850;
  margin: 0 0 8px;
}
h1, h2 { margin: 0; letter-spacing: -.045em; }
h1 { font-size: clamp(2rem, 6vw, 4rem); }
h2 { font-size: 1.25rem; }
.muted { color: var(--muted); line-height: 1.55; }
.login-form, .stack { display: grid; gap: 16px; margin-top: 24px; }
.form-error { color: var(--danger); min-height: 1.2em; }

.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px;
  border-right: 1px solid var(--card-border);
  background: rgba(8, 11, 16, .78);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.brand {
  display: flex;
  gap: 14px;
  align-items: center;
}
.brand span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: .86rem;
}
.nav {
  display: grid;
  gap: 10px;
}
.nav-item, .ghost-button {
  background: rgba(255,255,255,.06);
  color: var(--text);
  text-align: left;
}
.nav-item.active {
  background: linear-gradient(135deg, rgba(125,211,252,.24), rgba(167,139,250,.24));
}
.ghost-button {
  margin-top: auto;
}
.main {
  padding: 30px;
  min-width: 0;
}
.panel { display: none; }
.panel.active { display: block; }
.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}
.search {
  display: flex;
  gap: 10px;
  width: min(100%, 520px);
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 18px;
  color: var(--muted);
}
.crumb {
  background: rgba(255,255,255,.07);
  color: var(--text);
  padding: 8px 11px;
  border-radius: 999px;
}
.status {
  color: var(--muted);
  margin-bottom: 14px;
}
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}
.file-card {
  padding: 16px;
  display: grid;
  gap: 12px;
  min-width: 0;
}
.file-icon {
  font-size: 2rem;
}
.file-info {
  display: grid;
  gap: 4px;
  min-width: 0;
}
.file-info strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-info span {
  color: var(--muted);
  font-size: .88rem;
}
.file-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}
.file-actions button, .download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 9px 12px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 800;
}
.download-link {
  background: rgba(255,255,255,.07);
  color: var(--text);
}
.card {
  padding: 20px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.stat-card {
  padding: 18px;
}
.stat-card span {
  display: block;
  color: var(--muted);
}
.stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
}
.admin-grid {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 16px;
}
.wide {
  grid-column: span 1;
}
.table-like {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}
.row-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: rgba(255,255,255,.055);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 14px;
}
.row-card span, .row-card small {
  display: block;
  color: var(--muted);
  margin-top: 4px;
}
.admin-only { display: none; }
.is-admin .admin-only { display: block; }
.empty {
  grid-column: 1 / -1;
  color: var(--muted);
  padding: 40px;
  text-align: center;
  border: 1px dashed var(--card-border);
  border-radius: 24px;
}
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.72);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 50;
}
.modal.hidden { display: none; }
.modal-content {
  width: min(100%, 1100px);
  max-height: 92vh;
  background: var(--panel-solid);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr;
}
.modal-head {
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--card-border);
}
.viewer-body {
  min-height: 280px;
  max-height: calc(92vh - 96px);
  display: grid;
  place-items: center;
  background: #020617;
}
.viewer-body video,
.viewer-body audio,
.viewer-body img,
.viewer-body iframe {
  max-width: 100%;
  max-height: calc(92vh - 110px);
}
.viewer-body video,
.viewer-body iframe {
  width: 100%;
  height: calc(92vh - 110px);
}
.viewer-body img {
  object-fit: contain;
}

@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--card-border);
  }
  .nav { grid-template-columns: repeat(3, 1fr); }
  .main { padding: 18px; }
  .topbar { display: grid; align-items: start; }
  .search { width: 100%; }
  .stats-grid, .admin-grid { grid-template-columns: 1fr; }
}

.admin-file-tools {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 18px;
  padding: 16px;
  background: rgba(255,255,255,.055);
  border: 1px solid var(--card-border);
  border-radius: 24px;
}
.is-admin .admin-file-tools { display: flex; }
.admin-file-tools span {
  display: block;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.45;
}
.admin-file-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}
.admin-file-actions input[type="file"] {
  width: min(100%, 280px);
  padding: 9px;
}
.admin-entry-actions {
  display: none;
  gap: 8px;
  flex-wrap: wrap;
  border-top: 1px solid var(--card-border);
  padding-top: 10px;
}
.is-admin .admin-entry-actions { display: flex; }
button.small {
  min-height: 32px;
  padding: 7px 10px;
  border-radius: 10px;
  font-size: .82rem;
}
button.ghost, .ghost-button.inline {
  background: rgba(255,255,255,.075);
  color: var(--text);
}
button.danger {
  background: rgba(251,113,133,.16);
  color: #fecdd3;
}
.file-actions,
.admin-entry-actions { min-width: 0; }

@media (max-width: 820px) {
  .admin-file-tools { align-items: stretch; flex-direction: column; }
  .admin-file-actions { justify-content: stretch; }
  .admin-file-actions button, .admin-file-actions input[type="file"] { width: 100%; }
}

/* Public landing page */
.landing-page {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(125, 211, 252, 0.20), transparent 26rem),
    radial-gradient(circle at 88% 12%, rgba(167, 139, 250, 0.22), transparent 30rem),
    radial-gradient(circle at 50% 100%, rgba(14, 165, 233, 0.10), transparent 34rem),
    linear-gradient(135deg, #07111c 0%, #0d1422 46%, #090d18 100%);
  color: #eef4ff;
}
.landing-page::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.75), transparent 72%);
}
.landing-shell {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.landing-nav {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.landing-logo,
.landing-nav a,
.landing-footer a {
  color: inherit;
  text-decoration: none;
}
.landing-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.landing-logo span {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 16px;
  background: linear-gradient(135deg, #7dd3fc, #a78bfa);
  color: #06111f;
  font-weight: 950;
  letter-spacing: -.08em;
  box-shadow: 0 16px 40px rgba(125, 211, 252, .18);
}
.landing-logo strong { letter-spacing: -.025em; }
.landing-nav nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid rgba(148, 163, 184, 0.20);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.50);
  backdrop-filter: blur(18px);
}
.landing-nav nav a {
  color: #b6c4d8;
  padding: 10px 14px;
  border-radius: 999px;
  transition: color 160ms ease, background 160ms ease;
}
.landing-nav nav a:hover,
.landing-nav nav a.media-pill {
  color: #eef4ff;
  background: rgba(255,255,255,.08);
}
.hero-section {
  min-height: calc(100vh - 82px);
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(330px, 0.88fr);
  gap: 34px;
  align-items: center;
  padding: 42px 0 70px;
}
.hero-copy h1 {
  max-width: 760px;
  margin: 14px 0 22px;
  font-size: clamp(3rem, 6.8vw, 5.7rem);
  line-height: .94;
  letter-spacing: -0.075em;
}
.hero-text {
  max-width: 630px;
  color: #b8c4d6;
  font-size: clamp(1.08rem, 1.5vw, 1.28rem);
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 850;
  text-decoration: none;
}
.primary-link {
  background: linear-gradient(135deg, #7dd3fc, #a78bfa);
  color: #06111f;
  box-shadow: 0 18px 48px rgba(125, 211, 252, .18);
}
.secondary-link {
  color: #e5eefc;
  border: 1px solid rgba(148, 163, 184, 0.30);
  background: rgba(15, 23, 42, 0.54);
}
.hero-panel {
  display: grid;
  gap: 14px;
}
.status-card,
.feature-card,
.curriculum-card,
.link-card {
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(15, 23, 42, 0.62);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px);
}
.status-card {
  border-radius: 34px;
  padding: 26px;
}
.status-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}
.status-line span:first-child {
  color: #8edcff;
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .74rem;
  font-weight: 950;
}
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #bbf7d0;
  font-weight: 850;
}
.status-dot::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #86efac;
  box-shadow: 0 0 0 6px rgba(134, 239, 172, .12);
}
.status-card h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.05;
  margin-bottom: 12px;
}
.status-card p,
.feature-card p,
.curriculum-card p { color: #aab8cd; line-height: 1.6; }
.mini-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.mini-stack span {
  border: 1px solid rgba(148, 163, 184, 0.20);
  background: rgba(255,255,255,.055);
  border-radius: 999px;
  padding: 7px 10px;
  color: #dbeafe;
  font-size: .84rem;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.feature-card {
  border-radius: 24px;
  padding: 18px;
}
.feature-card strong { display: block; margin-bottom: 6px; }
.feature-card p { margin: 0; font-size: .92rem; }
.landing-section {
  padding: 58px 0;
}
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: end;
  margin-bottom: 22px;
}
.section-head h2 {
  margin: 4px 0 0;
  font-size: clamp(2rem, 3.6vw, 3.4rem);
  letter-spacing: -0.055em;
}
.section-note {
  max-width: 420px;
  color: #9aa7ba;
  line-height: 1.6;
  margin: 0;
}
.curriculum-grid,
.link-grid {
  display: grid;
  gap: 16px;
}
.curriculum-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.link-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.curriculum-card,
.link-card {
  border-radius: 28px;
  padding: 24px;
}
.curriculum-card span,
.link-card span {
  color: #7dd3fc;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
}
.curriculum-card h3,
.link-card strong {
  display: block;
  margin: 14px 0 8px;
  color: #eef4ff;
  font-size: 1.24rem;
  line-height: 1.15;
}
.link-card {
  min-height: 160px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.link-card::after {
  content: "Open →";
  color: #9fb0c8;
  font-weight: 800;
  margin-top: 22px;
}
.link-card:hover {
  transform: translateY(-4px);
  border-color: rgba(125, 211, 252, 0.65);
  background: rgba(30, 41, 59, 0.72);
}
.link-card.private {
  background: linear-gradient(135deg, rgba(125, 211, 252, 0.18), rgba(167, 139, 250, 0.20));
}
.landing-footer {
  padding: 52px 0 34px;
  color: #8493a8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid rgba(148, 163, 184, .14);
}
.text-center { text-align: center; }
@media (max-width: 940px) {
  .hero-section { grid-template-columns: 1fr; min-height: auto; padding-top: 28px; }
  .hero-panel { max-width: 620px; }
  .section-head { display: block; }
  .section-note { margin-top: 10px; }
  .curriculum-grid, .link-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .landing-shell { width: min(100% - 24px, 1180px); }
  .landing-nav { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  .landing-nav nav { width: 100%; overflow-x: auto; justify-content: space-between; }
  .hero-copy h1 { font-size: clamp(2.55rem, 15vw, 4.4rem); }
  .feature-grid, .curriculum-grid, .link-grid { grid-template-columns: 1fr; }
  .landing-footer { align-items: flex-start; flex-direction: column; }
}