.app-root { min-height: 100vh; }

/* Login */
.login-view {
  display: grid;
  min-height: 100vh;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  background: var(--canvas);
}

.login-hero {
  display: grid;
  align-content: center;
  gap: 18px;
  padding: 48px clamp(28px, 6vw, 72px);
  color: var(--login-hero-text);
  background:
    radial-gradient(circle at 20% 20%, rgb(16 185 129 / 28%), transparent 42%),
    linear-gradient(160deg, #064e3b 0%, #0f172a 55%, #111827 100%);
}

.login-hero h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
}

.login-hero p {
  margin: 0;
  max-width: 420px;
  color: var(--login-hero-muted);
  font-size: 15px;
  line-height: 1.6;
}

.login-hero ul {
  display: grid;
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  color: var(--login-hero-list);
  font-size: 13px;
}

.login-hero li::before {
  content: "✓ ";
  color: var(--login-hero-check);
  font-weight: 700;
}

.login-side {
  display: grid;
  place-items: center;
  padding: 28px 18px;
}

.login-panel {
  display: grid;
  width: min(100%, 400px);
  gap: 16px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.login-brand,
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-brand img,
.sidebar-brand img {
  border-radius: 10px;
}

.login-brand strong,
.sidebar-brand strong {
  display: block;
  color: var(--ink);
  font-size: 15px;
}

.login-brand span,
.sidebar-brand span {
  color: var(--muted);
  font-size: 12px;
}

.login-heading {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

/* Shell */
.admin-shell {
  display: grid;
  min-height: 100vh;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  height: 100vh;
  flex-direction: column;
  padding: 20px 14px;
  background: var(--sidebar);
  border-right: 1px solid var(--line);
}

.sidebar-brand {
  position: relative;
  min-height: 56px;
  margin: 0 6px 16px;
  padding: 6px 10px 18px;
  border-bottom: 1px solid var(--line);
}

.sidebar-toggle,
.sidebar-close,
.sidebar-backdrop {
  display: none;
}

.sidebar-nav {
  display: grid;
  gap: 18px;
  overflow: auto;
  padding: 6px;
}

.nav-group {
  display: grid;
  gap: 6px;
}

.sidebar-label {
  margin: 0 10px 4px;
  color: var(--muted-soft);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 12px;
  color: var(--ink-soft);
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.nav-item span {
  font-size: 13px;
  font-weight: 600;
}

.nav-item small {
  display: none;
}

.nav-item:hover {
  background: var(--sidebar-hover);
}

.nav-item[aria-current="page"] {
  color: var(--brand-ink);
  background: var(--sidebar-active);
  border-color: var(--nav-active-border);
}

.nav-tree {
  display: grid;
  gap: 2px;
}

.nav-parent {
  font-weight: 650;
}

.nav-caret {
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  opacity: 0.65;
  transform: rotate(-45deg);
  transition: transform 120ms ease;
}

.nav-tree.is-open > .nav-parent .nav-caret {
  transform: rotate(45deg);
}

.nav-children {
  display: grid;
  gap: 2px;
  margin: 2px 0 4px;
  padding: 2px 0 2px 10px;
  border-left: 2px solid var(--line);
  margin-left: 12px;
}

.nav-child {
  padding: 7px 10px;
  color: var(--muted);
}

.nav-child span {
  font-size: 12.5px;
  font-weight: 550;
}

.nav-child[aria-current="page"] {
  color: var(--brand-ink);
  background: var(--sidebar-active);
}

.nav-parent[aria-current="page"]:not(.nav-child) {
  color: var(--ink);
  background: transparent;
}

.page-subpanel {
  display: grid;
  gap: 12px;
}

.sidebar-status {
  display: grid;
  margin-top: auto;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 12px 6px;
  border-top: 1px solid var(--line);
}

.status-dot {
  width: 8px;
  height: 8px;
  margin-top: 5px;
  background: var(--brand);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgb(16 185 129 / 16%);
}

.sidebar-status strong {
  display: block;
  color: var(--ink);
  font-size: 12px;
}

.sidebar-status span {
  color: var(--muted);
  font-size: 11px;
}

.admin-content {
  min-width: 0;
  min-height: 100vh;
  background: var(--canvas);
}

.content-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  min-height: var(--header-h);
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px var(--page-inline);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-lead {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  gap: 10px;
}

.header-title {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.header-kicker {
  color: var(--brand);
  font-size: 11px;
  font-weight: 700;
}

.content-header h1 {
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 20px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.content-header p {
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

.page-body {
  width: 100%;
  max-width: 1480px;
  padding: var(--page-block) var(--page-inline) 36px;
}

.admin-page {
  display: grid;
  gap: var(--section-gap);
}

.panel,
.tool-panel,
.manifest-panel,
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* Nested forms/uploads are sections, not another card */
.upload-form {
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.panel,
.card,
.manifest-panel,
.tool-panel {
  padding: var(--card-pad);
}

.panel-heading,
.inline-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.panel-heading .header-actions,
.inline-heading .header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.inline-heading { align-items: center; }

@media (max-width: 980px) {
  .admin-shell {
    grid-template-columns: 220px minmax(0, 1fr);
  }
}

@media (max-width: 900px) {
  .login-view {
    grid-template-columns: 1fr;
  }

  .login-hero { display: none; }

  .login-panel {
    width: min(100%, 420px);
    padding: 22px 18px;
  }

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

  body.nav-lock {
    overflow: hidden;
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 50;
    background: rgb(15 23 42 / 48%);
  }

  .sidebar-toggle,
  .sidebar-close {
    display: inline-flex;
  }

  .sidebar-close {
    position: absolute;
    top: 8px;
    right: 4px;
    height: 32px;
    min-height: 32px;
    padding: 0 10px;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 55;
    width: min(288px, 86vw);
    height: 100vh;
    height: 100dvh;
    padding: 16px 12px calc(16px + env(safe-area-inset-bottom, 0px));
    border-right: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    transform: translateX(-105%);
    transition: transform 180ms ease;
  }

  .admin-shell.nav-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-brand {
    margin: 0 4px 14px;
    padding: 4px 40px 16px 8px;
  }

  .content-header {
    flex-wrap: nowrap;
    gap: 8px;
    padding: 8px 12px;
    min-height: 56px;
  }

  .header-actions {
    flex: 0 0 auto;
    justify-content: flex-end;
    gap: 6px;
  }

  .header-actions .button {
    min-width: 0;
    padding: 0 8px;
  }

  .header-kicker,
  .content-header p {
    display: none;
  }

  .content-header h1 {
    font-size: 16px;
  }

  .page-body {
    padding: 14px 14px calc(28px + env(safe-area-inset-bottom, 0px));
  }

  .admin-page {
    gap: 12px;
  }

  .panel,
  .card,
  .manifest-panel,
  .tool-panel {
    padding: 14px;
  }

  .panel-heading,
  .inline-heading {
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
  }

  .panel-heading .header-actions,
  .inline-heading .header-actions {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .sidebar-toggle {
    height: 34px;
    min-height: 34px;
    min-width: 48px;
    padding: 0 8px;
  }

  .header-actions .button {
    height: 34px;
    min-height: 34px;
  }
}