/* Shared styles for the backend's web pages (form, drop, admin). */

:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --text: #1c1f24;
  --muted: #5d6470;
  --border: #d9dde3;
  --accent: #2458d6;
  --accent-text: #ffffff;
  --accent-soft: rgba(36, 88, 214, 0.1);
  --ok: #1e7f4f;
  --ok-soft: rgba(30, 127, 79, 0.12);
  --warn: #9a6400;
  --warn-soft: rgba(154, 100, 0, 0.12);
  --danger: #c0352b;
  --danger-soft: rgba(192, 53, 43, 0.1);
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2025;
    --surface-2: #23272d;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --border: #343941;
    --accent: #6b93ff;
    --accent-text: #0e1422;
    --accent-soft: rgba(107, 147, 255, 0.14);
    --ok: #4cc38a;
    --ok-soft: rgba(76, 195, 138, 0.14);
    --warn: #e0a640;
    --warn-soft: rgba(224, 166, 64, 0.14);
    --danger: #f07167;
    --danger-soft: rgba(240, 113, 103, 0.14);
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

a { color: var(--accent); }

/* ---- top bar ---- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1040px;
  margin: 0 auto;
  padding: 1rem 16px;
}

.brand { font-weight: 700; letter-spacing: 0.01em; white-space: nowrap; }

.nav { display: flex; gap: 0.25rem; flex-wrap: nowrap; justify-content: flex-end; }
.nav a { white-space: nowrap; }

@media (max-width: 520px) {
  .topbar { padding: 0.75rem 16px; gap: 0.25rem 0.5rem; flex-wrap: wrap; }
  .brand { font-size: 0.95rem; }
  .nav a { padding: 0.3rem 0.55rem; font-size: 0.85rem; }
  .card { padding: 1.15rem; }
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.92rem;
}

.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

/* ---- layout ---- */

.page { max-width: 560px; margin: 0 auto; padding: 0 16px 3rem; }
.page.wide { max-width: 1040px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.card + .card { margin-top: 1rem; }
.grid > .card { margin-top: 0; }

h1 { font-size: 1.45rem; margin: 0 0 0.35rem; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
.lead { color: var(--muted); margin: 0 0 1.25rem; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

/* ---- form controls ---- */

.field { display: block; margin-bottom: 1rem; }

.field > .label { display: block; font-weight: 600; font-size: 0.93rem; margin-bottom: 0.35rem; }
.field > .label .opt { font-weight: 400; color: var(--muted); }
.field > .hint { display: block; color: var(--muted); font-size: 0.83rem; margin-top: 0.3rem; }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
@media (max-width: 520px) {
  .row { grid-template-columns: 1fr; }
  .label.spacer { display: none !important; }
}

input[type="text"], input[type="email"], input[type="number"], input[type="password"], input[type="search"], select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
}

textarea { resize: vertical; min-height: 5rem; }

input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, .dropzone:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.check { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; font-size: 0.93rem; }
.check input { width: 1.05rem; height: 1.05rem; accent-color: var(--accent); }

.field.invalid input, .field.invalid .dropzone { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: 0.83rem; margin-top: 0.3rem; }

/* ---- buttons ---- */

button, .button {
  font: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  display: inline-block;
}

button:disabled { opacity: 0.55; cursor: not-allowed; }
button.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
button.ghost { background: transparent; color: var(--muted); padding: 0.25rem 0.5rem; }
button.danger { background: var(--danger); }
button.block { width: 100%; padding: 0.75rem; }

/* ---- drop zone + file list ---- */

.dropzone {
  display: block;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  padding: 1.6rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover { border-color: var(--accent); }
.dropzone.over { border-color: var(--accent); background: var(--accent-soft); }
.dropzone input[type="file"] { position: absolute; width: 1px; height: 1px; opacity: 0; }
.dropzone .big { font-size: 1.05rem; font-weight: 600; display: block; }
.dropzone.large { padding: 3.5rem 1rem; }
.dropzone.large .big { font-size: 1.3rem; }
.dropzone svg { width: 34px; height: 34px; color: var(--accent); margin-bottom: 0.4rem; }

.files { list-style: none; margin: 0.6rem 0 0; padding: 0; }

.files li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 0.4rem;
  background: var(--surface);
  font-size: 0.92rem;
}

.files li.too-big { border-color: var(--danger); background: var(--danger-soft); }
.files .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .size { color: var(--muted); font-variant-numeric: tabular-nums; }
.files .warn { color: var(--danger); font-size: 0.8rem; }

/* ---- progress + status ---- */

.progress { height: 6px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin: 0.75rem 0 0; }
.progress > div { height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }

.alert { border-radius: 8px; padding: 0.7rem 0.9rem; margin-top: 1rem; font-size: 0.93rem; }
.alert.error { background: var(--danger-soft); color: var(--danger); }
.alert.ok { background: var(--ok-soft); color: var(--ok); }
.alert.warn { background: var(--warn-soft); color: var(--warn); }

.success { text-align: center; padding: 1rem 0 0.5rem; }
.success .icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--ok-soft); color: var(--ok);
  display: inline-grid; place-items: center; margin-bottom: 0.75rem;
}
.success .icon svg { width: 28px; height: 28px; }

[hidden] { display: none !important; }

/* ---- admin ---- */

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }

.stat .k { color: var(--muted); font-size: 0.85rem; }
.stat .v { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat .s { color: var(--muted); font-size: 0.83rem; margin-top: 0.2rem; }

.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.8rem; font-weight: 600; padding: 0.15rem 0.55rem; border-radius: 999px;
}
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.off { background: var(--surface-2); color: var(--muted); }
.badge.error { background: var(--danger-soft); color: var(--danger); }

.section-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.section-head h2 { margin: 0; }
.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 0.3rem 1rem; font-size: 0.92rem; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; }

.setting { padding: 0.9rem 0; border-top: 1px solid var(--border); }
.setting:first-of-type { border-top: 0; padding-top: 0; }
.setting .head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.75rem; flex-wrap: wrap; }
.setting .label { font-weight: 600; font-size: 0.93rem; }
.setting .hint { color: var(--muted); font-size: 0.83rem; margin: 0.15rem 0 0.45rem; }
.setting .meta { font-size: 0.8rem; color: var(--muted); }
.setting .meta button { font-size: 0.8rem; }
.setting input:not([type="checkbox"]), .setting textarea { max-width: 420px; }

.savebar {
  position: sticky; bottom: 0; margin-top: 1rem;
  display: flex; align-items: center; justify-content: flex-end; gap: 0.75rem;
  background: var(--surface); border-top: 1px solid var(--border); padding: 0.75rem 0 0;
}