:root {
  --cae-bg: #f4f7f6;
  --cae-bg-elev: #ffffff;
  --cae-ink: #0f1f1e;
  --cae-muted: #5b6e6c;
  --cae-line: #d5e0de;
  --cae-accent: #0f766e;
  --cae-accent-2: #14b8a6;
  --cae-danger: #b91c1c;
  --cae-mono: "IBM Plex Mono", ui-monospace, monospace;
  --cae-sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --cae-radius: 12px;
  --cae-shadow: 0 12px 40px rgba(15, 31, 30, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --cae-bg: #071413;
    --cae-bg-elev: #0e1f1e;
    --cae-ink: #e7f5f3;
    --cae-muted: #9bb5b1;
    --cae-line: #1f3533;
    --cae-accent: #2dd4bf;
    --cae-accent-2: #14b8a6;
    --cae-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--cae-sans);
  color: var(--cae-ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(45, 212, 191, 0.16), transparent 55%),
    radial-gradient(900px 400px at 100% 0%, rgba(15, 118, 110, 0.12), transparent 50%),
    linear-gradient(180deg, var(--cae-bg), color-mix(in srgb, var(--cae-bg) 88%, #0f766e));
}

.page-shell { min-height: 100vh; }
.cae-banner {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--cae-bg-elev) 86%, transparent);
  border-bottom: 1px solid var(--cae-line);
}
.cae-banner-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.cae-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}
.cae-brand strong { display: block; font-size: 1rem; }
.cae-meta { display: block; font-size: 0.78rem; color: var(--cae-muted); }
.cae-badge {
  display: inline-block;
  margin-top: 2px;
  font-size: 0.68rem;
  font-family: var(--cae-mono);
  padding: 2px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--cae-accent) 18%, transparent);
  color: var(--cae-accent);
}
.cae-nav { display: flex; gap: 8px; margin-left: auto; }
.cae-nav a {
  text-decoration: none;
  color: var(--cae-muted);
  padding: 6px 10px;
  border-radius: 8px;
  font-weight: 500;
}
.cae-nav a.is-active,
.cae-nav a:hover { color: var(--cae-ink); background: color-mix(in srgb, var(--cae-accent) 12%, transparent); }

.cae-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}
.cae-view[hidden] { display: none !important; }
.cae-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}
.cae-toolbar h2 { margin: 0 0 4px; font-size: 1.55rem; }
.cae-lead { margin: 0; color: var(--cae-muted); font-size: 0.95rem; }
.cae-vcs-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; }
.cae-inline { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: var(--cae-muted); }
.cae-inline select {
  font: inherit;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--cae-line);
  background: var(--cae-bg-elev);
  color: var(--cae-ink);
}

.btn {
  font: inherit;
  font-weight: 600;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  background: var(--cae-line);
  color: var(--cae-ink);
}
.btn-primary {
  background: linear-gradient(135deg, var(--cae-accent), var(--cae-accent-2));
  color: #042f2e;
}
.btn-ghost { background: transparent; border: 1px solid var(--cae-line); }
.btn-compact { padding: 6px 10px; font-size: 0.88rem; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.cae-empty {
  padding: 28px;
  border: 1px dashed var(--cae-line);
  border-radius: var(--cae-radius);
  color: var(--cae-muted);
  text-align: center;
}
.cae-vault-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.cae-vault-card {
  display: block;
  text-align: left;
  width: 100%;
  padding: 18px;
  border-radius: var(--cae-radius);
  border: 1px solid var(--cae-line);
  background: var(--cae-bg-elev);
  box-shadow: var(--cae-shadow);
  cursor: pointer;
  color: inherit;
  font: inherit;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.cae-vault-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--cae-accent) 55%, var(--cae-line));
}
.cae-vault-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.cae-vault-card p { margin: 0; color: var(--cae-muted); font-size: 0.88rem; }
.cae-kind {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--cae-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--cae-accent);
}

.cae-vault-layout {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 16px;
}
@media (max-width: 900px) {
  .cae-vault-layout { grid-template-columns: 1fr; }
  .cae-banner-inner { flex-wrap: wrap; }
  .cae-nav { margin-left: 0; width: 100%; }
}
.cae-panel {
  border: 1px solid var(--cae-line);
  border-radius: var(--cae-radius);
  background: var(--cae-bg-elev);
  padding: 16px;
  box-shadow: var(--cae-shadow);
}
.cae-panel h3, .cae-panel h4 { margin: 0 0 10px; }
.cae-upload-row { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.cae-dropzone {
  margin-bottom: 12px;
  padding: 16px 14px;
  border: 1.5px dashed var(--cae-line);
  border-radius: var(--cae-radius);
  background: color-mix(in srgb, var(--cae-accent) 6%, var(--cae-bg));
  text-align: center;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.cae-dropzone.is-dragover {
  border-color: var(--cae-accent);
  background: color-mix(in srgb, var(--cae-accent) 16%, var(--cae-bg));
  transform: translateY(-1px);
}
.cae-dropzone-title {
  margin: 0 0 4px;
  font-weight: 600;
  font-size: 0.95rem;
}
.cae-dropzone-hint {
  margin: 0 0 12px;
  color: var(--cae-muted);
  font-size: 0.8rem;
}
.cae-upload-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.cae-file-label {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  margin: 0;
}
.cae-tree, .cae-locks, .cae-commits { list-style: none; margin: 0; padding: 0; }
.cae-tree li, .cae-locks li {
  font-family: var(--cae-mono);
  font-size: 0.8rem;
  padding: 6px 0;
  border-bottom: 1px solid var(--cae-line);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.cae-tree .staged { color: var(--cae-accent); }
.cae-commits li {
  padding: 12px 0;
  border-bottom: 1px solid var(--cae-line);
}
.cae-commits .sha {
  font-family: var(--cae-mono);
  font-size: 0.75rem;
  color: var(--cae-accent);
}
.cae-commits .msg { font-weight: 600; margin: 4px 0; }
.cae-commits .meta { font-size: 0.8rem; color: var(--cae-muted); }
.cae-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.cae-tab {
  font: inherit;
  border: 1px solid var(--cae-line);
  background: transparent;
  color: var(--cae-muted);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
}
.cae-tab.is-active {
  color: var(--cae-ink);
  border-color: color-mix(in srgb, var(--cae-accent) 50%, var(--cae-line));
  background: color-mix(in srgb, var(--cae-accent) 12%, transparent);
}
.cae-diff {
  margin: 0;
  padding: 12px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--cae-ink) 4%, var(--cae-bg));
  font-family: var(--cae-mono);
  font-size: 0.8rem;
  white-space: pre-wrap;
  overflow: auto;
  max-height: 480px;
}
.cae-status { min-height: 1.2em; font-size: 0.85rem; color: var(--cae-muted); }
.cae-lock-box { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--cae-line); }
.cae-lock-box input {
  width: 100%;
  margin-bottom: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--cae-line);
  background: var(--cae-bg);
  color: var(--cae-ink);
  font: inherit;
}
.cae-actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }

.cae-dialog {
  border: 1px solid var(--cae-line);
  border-radius: 16px;
  padding: 0;
  background: var(--cae-bg-elev);
  color: var(--cae-ink);
  width: min(420px, calc(100vw - 32px));
  box-shadow: var(--cae-shadow);
}
.cae-dialog::backdrop { background: rgba(4, 47, 46, 0.45); }
.cae-dialog form { display: flex; flex-direction: column; gap: 12px; padding: 20px; }
.cae-dialog h3 { margin: 0; }
.cae-dialog label { display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; }
.cae-dialog input,
.cae-dialog select,
.cae-dialog textarea {
  font: inherit;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--cae-line);
  background: var(--cae-bg);
  color: var(--cae-ink);
}

.cae-login .login-card h1 { font-family: var(--cae-sans); }