/* ============================================================================
   Document Hub — a catalogue drawer: manila tabs, ruled index cards.
   ========================================================================== */

:root {
  --paper:   #EBEFED;
  --card:    #FFFFFF;
  --ink:     #14211E;
  --ink-2:   #4B5E58;
  --ink-3:   #7B8C87;
  --rule:    #D4DCD8;
  --accent:  #23685A;
  --accent-2:#17513F;
  --tab:     #C99B33;
  --tab-ink: #2C2206;
  --tab-rule:rgba(30, 22, 0, .25);
  --danger:  #9A3125;
  --good:    #23685A;
  --lift:    0 22px 44px -22px rgba(10, 24, 20, .6);

  --sans:  ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:   #0F1614;
    --card:    #19221F;
    --ink:     #E3EAE7;
    --ink-2:   #A3B2AC;
    --ink-3:   #798A84;
    --rule:    #2A3733;
    --accent:  #57BFA0;
    --accent-2:#7BD3B8;
    --tab:     #A57F26;
    --tab-ink: #14100A;
    --tab-rule:rgba(0, 0, 0, .35);
    --danger:  #D9776A;
    --good:    #57BFA0;
    --lift:    0 22px 44px -20px rgba(0, 0, 0, .8);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: clamp(1.2rem, 4vw, 2.6rem) clamp(1rem, 4vw, 2rem) 4rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body > * { max-width: 900px; margin-left: auto; margin-right: auto; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

code { font-family: var(--mono); font-size: .82em; }

/* ------------------------------------------------------------- masthead -- */

.masthead { padding-bottom: 1.4rem; border-bottom: 1px solid var(--rule); }

.masthead-row {
  display: flex; flex-wrap: wrap; gap: 1rem;
  align-items: flex-end; justify-content: space-between;
}

.eyebrow {
  margin: 0 0 .3rem;
  font-family: var(--sans); font-size: .62rem; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase; color: var(--ink-3);
}

.masthead-title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(1.25rem, 4.4vw, 1.9rem);
  font-weight: 700; letter-spacing: .13em; text-transform: uppercase;
  line-height: 1.1;
}

.masthead-actions { display: flex; align-items: center; gap: .6rem; }
.masthead-actions form { margin: 0; }

.badge {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 999px; padding: .28rem .6rem;
}

.masthead-meta {
  display: flex; flex-wrap: wrap; gap: .5rem 1.1rem;
  margin: 1rem 0 0;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .04em; color: var(--ink-3);
}
.masthead-meta span { position: relative; }
.masthead-meta span + span::before {
  content: ""; position: absolute; left: -.6rem; top: .45em;
  width: 3px; height: 3px; border-radius: 50%; background: var(--ink-3);
}

.search { position: relative; margin-top: 1rem; }
.search-input {
  width: 100%; padding: .62rem .8rem; padding-right: 5rem;
  font-family: var(--mono); font-size: .82rem; color: var(--ink);
  background: var(--card); border: 1px solid var(--rule); border-radius: 5px;
}
.search-input::placeholder { color: var(--ink-3); }
.search-input:focus { outline: none; border-color: var(--accent); }
.search-count {
  position: absolute; right: .8rem; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: .68rem; color: var(--ink-3); pointer-events: none;
}

/* --------------------------------------------------------------- notices -- */

.notice {
  margin: 1.2rem auto 0; padding: .7rem .9rem;
  font-family: var(--sans); font-size: .82rem;
  border: 1px solid var(--rule); border-left: 3px solid var(--ink-3);
  border-radius: 4px; background: var(--card);
}
.notice-good { border-left-color: var(--good); }
.notice-bad  { border-left-color: var(--danger); }

.blank {
  margin: 2.4rem 0; padding: 2rem 1rem; text-align: center;
  color: var(--ink-2); border: 1px dashed var(--rule); border-radius: 6px;
}

/* ------------------------------------------------------------ upload desk -- */

.desk { margin-top: 1.4rem; }

.drop {
  background: var(--card);
  border: 1px solid var(--rule); border-radius: 8px;
  padding: .9rem;
}
.drop.is-over { border-color: var(--accent); box-shadow: inset 0 0 0 2px var(--accent); }
.drop.is-busy { opacity: .6; pointer-events: none; }

.drop-file {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.drop-file:focus-visible + .drop-target { outline: 2px solid var(--accent); outline-offset: 2px; }

.drop-target {
  display: flex; flex-direction: column; align-items: center; gap: .3rem;
  padding: 1.5rem 1rem; text-align: center; cursor: pointer;
  border: 1.5px dashed var(--rule); border-radius: 6px;
}
.drop-target:hover { border-color: var(--accent); }

.drop-headline {
  font-family: var(--sans); font-size: .72rem; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
}
.drop-sub { font-size: .84rem; color: var(--ink-2); }
.drop-picked { font-family: var(--mono); font-size: .72rem; color: var(--accent); }

.drop-row {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: .6rem;
  margin-top: .9rem;
}
.drop-row .field { flex: 0 1 260px; }

/* ------------------------------------------------------ fields & buttons -- */

.field { display: block; }
.field-label {
  display: block; margin-bottom: .32rem;
  font-family: var(--sans); font-size: .62rem; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3);
}
.field-input {
  width: 100%; padding: .6rem .7rem;
  font-family: var(--mono); font-size: .82rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--rule); border-radius: 5px;
}
.field-input:focus { outline: none; border-color: var(--accent); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .62rem 1rem; cursor: pointer; text-decoration: none;
  font-family: var(--sans); font-size: .68rem; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--ink); background: var(--card);
  border: 1px solid var(--rule); border-radius: 5px;
}
.btn:hover { border-color: var(--ink-3); }
.btn-primary { color: #fff; background: var(--accent); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

@media (prefers-color-scheme: dark) {
  .btn-primary { color: #0C1512; }
}

/* -------------------------------------------------------------- the drawer -- */

.drawer { margin-top: 1.8rem; }

.section { margin-bottom: 1.9rem; }

.tab {
  position: relative; z-index: 1; margin-bottom: -1px;
  display: inline-flex; align-items: center; flex-wrap: wrap; gap: .55rem;
  max-width: 100%; padding: .36rem .85rem;
  background: var(--tab); color: var(--tab-ink);
  border-radius: 6px 6px 0 0;
  font-family: var(--sans); font-size: .66rem; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
}
.tab-name { word-break: break-word; }
.tab-count { font-family: var(--mono); letter-spacing: .06em; opacity: .7; }
.tab-tools {
  display: inline-flex; gap: .55rem;
  padding-left: .7rem; border-left: 1px solid var(--tab-rule);
}
.tab-link {
  padding: 0; border: 0; background: none; cursor: pointer;
  font: inherit; color: inherit; opacity: .78; text-decoration: none;
}
.tab-link:hover { opacity: 1; text-decoration: underline; text-underline-offset: 3px; }
.tab-link.is-off { opacity: .35; pointer-events: none; }

.stack {
  list-style: none; margin: 0; padding: 0; overflow: hidden;
  background: var(--card);
  border: 1px solid var(--rule); border-left: 3px solid var(--tab);
  border-radius: 0 6px 6px 6px;
}

.card {
  display: flex; align-items: center; flex-wrap: wrap; gap: .5rem .9rem;
  padding: .72rem .95rem;
  background: var(--card);
}
.card + .card { border-top: 1px solid var(--rule); }
.card:hover { background: var(--paper); }
.card.is-lifted:hover { background: var(--card); }

.grip {
  flex: 0 0 auto; display: grid; place-items: center;
  width: 24px; height: 30px; padding: 0;
  border: 0; border-radius: 4px; background: none;
  color: var(--ink-3); cursor: grab; touch-action: none;
}
.grip:hover { color: var(--ink); background: var(--paper); }
.grip svg circle { fill: currentColor; }

.card-body { flex: 1 1 220px; min-width: 0; }
.card-title {
  display: block; font-family: var(--serif); font-size: 1.02rem;
  color: var(--ink); text-decoration: none;
  overflow-wrap: anywhere;
}
.card-title:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.card-file {
  margin: .15rem 0 0;
  font-family: var(--mono); font-size: .68rem; color: var(--ink-3);
  overflow-wrap: anywhere;
}

.card-meta {
  flex: 0 0 auto; display: flex; gap: .8rem; margin: 0;
  font-family: var(--mono); font-size: .68rem; color: var(--ink-3);
  white-space: nowrap;
}

.card-actions { flex: 0 0 auto; display: flex; align-items: center; gap: .85rem; }

.link {
  padding: .2rem 0; border: 0; background: none; cursor: pointer;
  font-family: var(--sans); font-size: .64rem; font-weight: 700;
  letter-spacing: .13em; text-transform: uppercase;
  color: var(--ink-2); text-decoration: none;
}
.link:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.link-danger:hover { color: var(--danger); }

.empty {
  display: none; padding: 1.1rem .95rem;
  font-family: var(--sans); font-size: .68rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
}
.stack.is-empty .empty { display: block; }

/* --------------------------------------------------------------- dragging -- */

body.is-dragging { user-select: none; -webkit-user-select: none; cursor: grabbing; overflow-x: hidden; }
body.is-dragging .grip { cursor: grabbing; }

.card.is-lifted {
  position: fixed; z-index: 60; pointer-events: none;
  border: 1px solid var(--rule); border-radius: 6px;
  box-shadow: var(--lift); transform: rotate(-1.1deg);
}

.slot {
  list-style: none; margin: 0;
  border: 1.5px dashed var(--tab); border-radius: 4px;
  background: var(--paper);
  background: color-mix(in srgb, var(--tab) 12%, transparent);
}

.stack.has-slot .empty { display: none; }

@media (prefers-reduced-motion: reduce) {
  .card.is-lifted { transform: none; }
}

/* ---------------------------------------------------------------- toasts -- */

.toasts {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 80;
  display: flex; flex-direction: column; gap: .5rem;
  max-width: min(360px, calc(100vw - 2rem));
}
.toast {
  padding: .6rem .85rem;
  font-family: var(--sans); font-size: .8rem;
  color: var(--ink); background: var(--card);
  border: 1px solid var(--rule); border-left: 3px solid var(--good);
  border-radius: 5px; box-shadow: var(--lift);
}
.toast-bad { border-left-color: var(--danger); }

/* ---------------------------------------------------------------- footer -- */

.footer {
  margin-top: 2.5rem; padding-top: 1.1rem; border-top: 1px solid var(--rule);
  font-size: .82rem; color: var(--ink-3);
}
.footer p { margin: 0; }

.is-hidden { display: none !important; }

/* ------------------------------------------------------------ login page -- */

.page-login { display: grid; place-items: center; min-height: 100vh; padding: 2rem 1rem; }
.page-login > * { max-width: 380px; width: 100%; }

.gate { display: flex; flex-direction: column; gap: 1rem; }
.gate-back {
  font-family: var(--sans); font-size: .66rem; font-weight: 700;
  letter-spacing: .13em; text-transform: uppercase;
  color: var(--ink-3); text-decoration: none;
}
.gate-back:hover { color: var(--accent); }

.gate-card {
  padding: 1.6rem;
  background: var(--card);
  border: 1px solid var(--rule); border-top: 4px solid var(--tab);
  border-radius: 6px; box-shadow: var(--lift);
}
.gate-eyebrow {
  margin: 0 0 .4rem;
  font-family: var(--sans); font-size: .6rem; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase; color: var(--ink-3);
}
.gate-title {
  margin: 0 0 .5rem;
  font-family: var(--sans); font-size: 1.05rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
}
.gate-note { margin: 0 0 1.2rem; font-size: .88rem; color: var(--ink-2); }
.gate-error {
  margin: 0 0 1rem; padding: .55rem .7rem;
  font-family: var(--sans); font-size: .8rem; color: var(--danger);
  border: 1px solid var(--danger); border-radius: 4px;
}
.gate-card .field { margin-bottom: 1rem; }