/* layout.css — cleaned & tokenized */
/* Expect these in variables.css:
   --colour-primary, --colour-secondary, --colour-background, --colour-banner,
   --colour-surface, --colour-text, --font-family, --font-size-base, --font-size-heading
*/

:root{
  /* sensible fallbacks if any token is missing */
  --colour-surface: #ffffff;
  --colour-text: var(--colour-white);
  --font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  --font-size-base: 16px;
  --font-size-heading: 20px;
  --banner-padding-y: 10px;
  --banner-padding-x: 14px;
  --shadow-small: 0 1px 2px rgba(0,0,0,.05);
  --shadow-medium: 0 6px 18px rgba(0,0,0,.08);
}

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--colour-background);
  color: var(--colour-text);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
}

/* Banner */
.banner {
  background: var(--colour-banner, var(--colour-primary));
  color: var(--colour-on-banner, #111);
  padding: var(--banner-padding-y) var(--banner-padding-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.banner .brand {
  margin: 0;
  font-size: var(--font-size-heading);
  color: var(--colour-secondary);
  text-decoration: none;
  font-weight: 600;
}
.banner .nav a {
  display: inline-block;
  font-size: 16px;
  color: var(--colour-background);
  background: var(--colour-secondary);
  text-decoration: none;
  padding: 0.3rem 0.9rem;
  border-radius: 9999px;
  transition: background-color .2s, color .2s, filter .2s;
}
.banner .nav a:hover {
  background: var(--colour-primary);
  color: var(--colour-background);
}

/* Content wrapper (optional) */
.content { padding: 1rem; }

/* ===================== Auth (login) ===================== */
.auth-wrap {
  min-height: calc(100dvh - 64px);
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  background: var(--colour-background);
}
.auth-card {
  width: min(560px, 100%);
  background: var(--colour-background);
  border: 1px solid color-mix(in oklab, var(--colour-secondary) 25%, var(--colour-background));
  border-radius: 16px;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  box-shadow: var(--shadow-medium);
}
.auth-header h1 {
  margin: 0 0 .25rem 0;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 700;
  color: var(--colour-text);
}
.auth-header .muted { margin: 0; color: color-mix(in oklab, var(--colour-text) 55%, var(--colour-background)); }

.alert.error {
  margin: 1rem 0;
  padding: .75rem .9rem;
  border-radius: 10px;
  border: 1px solid color-mix(in oklab, var(--colour-secondary) 40%, var(--colour-background));
  background: color-mix(in oklab, var(--colour-secondary) 8%, var(--colour-background));
  color: color-mix(in oklab, var(--colour-text) 80%, var(--colour-secondary));
}

.auth-form { display: grid; gap: 1rem; margin-top: 1rem; }
.field { display: grid; gap: .4rem; }
.label { font-size: .875rem; color: color-mix(in oklab, var(--colour-text) 65%, var(--colour-background)); }
.input {
  width: 100%;
  appearance: none;
  background: var(--colour-surface);
  border: 1px solid color-mix(in oklab, var(--colour-secondary) 25%, var(--colour-background));
  border-radius: 10px;
  padding: .6rem .75rem;
  color: var(--colour-text);
  outline: none;
}
.input:focus {
  border-color: var(--colour-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--colour-primary) 30%, transparent);
}

/* Buttons */
.btn.primary {
  background: var(--colour-primary);
  color: var(--colour-on-primary, #111);
  border: 1px solid color-mix(in oklab, var(--colour-primary) 70%, transparent);
  border-radius: 10px;
  padding: .55rem .9rem;
  font-weight: 600;
}
.btn.primary:hover { filter: brightness(0.96); }
.btn-ghost {
  background: transparent;
  color: var(--colour-secondary);
  border: 1px solid var(--colour-secondary);
  border-radius: 10px;
  padding: .55rem .9rem;
}
.btn-ghost:hover { background: color-mix(in oklab, var(--colour-secondary) 10%, var(--colour-background)); }

@media (max-width: 420px) {
  .auth-actions { display: flex; gap: .6rem; justify-content: stretch; }
  .auth-actions > * { flex: 1 1 auto; text-align: center; }
}

/* ===================== Tiles (browser) ===================== */
.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  align-items: stretch;
}
.tile {
  --tile-border: color-mix(in oklab, var(--colour-secondary) 15%, var(--colour-background));
  --tile-hover: color-mix(in oklab, var(--colour-secondary) 8%, var(--colour-background));
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: .5rem;
  padding: 0.9rem 0.95rem;
  text-decoration: none;
  border: 1px solid var(--tile-border);
  border-radius: 14px;
  background: var(--colour-background);
  color: var(--colour-text);
  box-shadow: var(--shadow-small);
  transition: transform .08s ease, box-shadow .12s ease, border-color .12s ease, background-color .12s ease;
  cursor: pointer;
}
.tile:hover {
  transform: translateY(-1px);
  background: var(--tile-hover);
  box-shadow: var(--shadow-medium);
}
.tile:active { transform: translateY(0); }

.tile .title {
  font-weight: 700;
  line-height: 1.2;
  word-break: break-word;
}
.tile .meta {
  font-size: .86rem;
  color: color-mix(in oklab, var(--colour-text) 60%, var(--colour-background));
}
.tile .foot {
  display: flex;
  justify-content: flex-end;
  gap: .4rem;
}

/* tiny badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .78rem;
  padding: .25rem .5rem;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--colour-secondary) 25%, var(--colour-background));
  background: color-mix(in oklab, var(--colour-secondary) 6%, var(--colour-background));
  color: color-mix(in oklab, var(--colour-text) 80%, var(--colour-secondary));
}
.badge .ico { font-style: normal; }
.badge.folder .ico::before { content: "📁"; }
.badge.file .ico::before   { content: "📄"; }

/* link-like button for tile footers */
.btn-link {
  border: 1px solid var(--tile-border);
  border-radius: 10px;
  padding: .4rem .7rem;
  background: transparent;
  color: var(--colour-secondary);
}
.btn-link:hover {
  background: color-mix(in oklab, var(--colour-secondary) 10%, var(--colour-background));
}