:root {
  --paper: #f4f1ea;
  --panel: #fbfaf6;
  --ink: #1a1916;
  --ink-soft: #5c574d;
  --line: #ddd6c7;
  --line-strong: #c7bfac;
  --accent: #c2410c;        /* burnt orange signal */
  --accent-soft: #fde3d3;
  --ok: #15803d;
  --danger: #b91c1c;
  --shadow: 0 1px 0 rgba(0,0,0,.04), 0 8px 24px -12px rgba(40,30,10,.25);
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  background-image: radial-gradient(rgba(0,0,0,.025) 1px, transparent 1px);
  background-size: 22px 22px;
}
.hidden { display: none !important; }
.muted { color: var(--ink-soft); }
.small { font-size: 12px; }
.spacer { flex: 1; }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--sans);
  font-weight: 600;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--ink);
  padding: 9px 16px;
  cursor: pointer;
  border-radius: 2px;
  transition: transform .05s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { border-color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #9a330a; border-color: #9a330a; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-danger { color: var(--danger); border-color: var(--line-strong); }
.btn-danger:hover { border-color: var(--danger); background: #fbe9e9; }
.icon-btn {
  width: 26px; height: 26px; line-height: 22px; text-align: center;
  border: 1px solid var(--line-strong); background: var(--panel);
  cursor: pointer; border-radius: 2px; font-size: 16px; color: var(--ink);
}
.icon-btn:hover { border-color: var(--ink); }

/* ---------- Brand ---------- */
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  font-size: 22px; color: var(--accent);
  transform: translateY(-1px);
}
.brand h1 { font-size: 22px; margin: 0; letter-spacing: -.5px; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
}
.login-card {
  width: 360px; background: var(--panel); border: 1px solid var(--line-strong);
  padding: 36px 32px; border-radius: 4px; box-shadow: var(--shadow);
}
.login-sub { color: var(--ink-soft); margin: 6px 0 26px; font-size: 14px; }
#login-form label, .modal label {
  display: block; font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .06em; color: var(--ink-soft); margin-bottom: 16px;
}
input, select, textarea {
  width: 100%; margin-top: 6px; padding: 10px 12px;
  border: 1px solid var(--line-strong); background: #fff; color: var(--ink);
  font-family: var(--sans); font-size: 14px; border-radius: 2px; font-weight: 400;
  text-transform: none; letter-spacing: 0;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 12px 0 0; }

/* ---------- App layout ---------- */
.app { display: grid; grid-template-columns: 260px 1fr; height: 100vh; }
.sidebar {
  background: #232019; color: #e9e3d4; display: flex; flex-direction: column;
  border-right: 1px solid #000;
}
.sidebar-brand { padding: 20px 18px; font-weight: 700; font-size: 18px; border-bottom: 1px solid #3a352b; }
.sidebar-brand .brand-mark { color: var(--accent); }
.side-section { flex: 1; overflow-y: auto; padding: 16px 10px; }
.side-head {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; text-transform: uppercase; letter-spacing: .12em;
  color: #9b9384; padding: 0 8px 10px;
}
.side-head .icon-btn { background: #2f2b22; border-color: #4a4538; color: #e9e3d4; }
.sheet-list { list-style: none; margin: 0; padding: 0; }
.sheet-list li {
  padding: 10px 12px; cursor: pointer; border-radius: 3px; font-size: 14px;
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
}
.sheet-list li:hover { background: #2f2b22; }
.sheet-list li.active { background: var(--accent); color: #fff; }
.sheet-list .cnt { font-family: var(--mono); font-size: 11px; opacity: .7; }
.side-nav { padding: 8px 10px; border-top: 1px solid #3a352b; }
.nav-link {
  width: 100%; text-align: left; background: none; border: none; color: #cfc7b6;
  padding: 10px 12px; cursor: pointer; font-size: 14px; font-family: var(--sans);
  border-radius: 3px;
}
.nav-link:hover { background: #2f2b22; color: #fff; }
.side-foot { padding: 14px; border-top: 1px solid #3a352b; }
.user-chip { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.who-name { font-weight: 600; font-size: 14px; }
.role-badge {
  align-self: flex-start; font-family: var(--mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: .08em; padding: 2px 7px;
  background: #3a352b; border-radius: 2px; color: #e9c9b3;
}

/* ---------- Content ---------- */
.content { display: flex; flex-direction: column; overflow: hidden; }
.content-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding: 22px 28px 16px; border-bottom: 1px solid var(--line);
}
.content-head h2 { margin: 0; font-size: 22px; letter-spacing: -.4px; }
.content-head .muted { margin: 4px 0 0; font-size: 13px; }
.head-actions { display: flex; gap: 8px; }
.toolbar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 28px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.search { width: 240px; margin: 0; }

/* ---------- Grid ---------- */
.grid-scroll { flex: 1; overflow: auto; }
.grid { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.grid th, .grid td {
  border: 1px solid var(--line); padding: 0; text-align: left;
  white-space: nowrap;
}
.grid thead th {
  position: sticky; top: 0; z-index: 2;
  background: #efeadd; padding: 9px 12px; font-size: 12px;
  text-transform: uppercase; letter-spacing: .05em; color: var(--ink-soft);
  border-bottom: 2px solid var(--line-strong);
}
.grid thead th.col-meta { font-family: var(--mono); }
.grid tbody td { background: #fff; }
.grid tbody tr:nth-child(even) td { background: #fcfbf7; }
.grid tbody tr:hover td { background: var(--accent-soft); }
.row-num {
  font-family: var(--mono); color: var(--ink-soft); text-align: right;
  padding: 8px 10px !important; width: 48px; background: #f1ece0 !important;
  position: sticky; left: 0;
}
.cell-input {
  width: 100%; border: none; background: transparent; padding: 8px 12px;
  font-family: var(--mono); font-size: 13px; color: var(--ink); margin: 0;
}
.cell-input:focus {
  outline: 2px solid var(--accent); outline-offset: -2px; background: #fff;
  box-shadow: none;
}
.cell-input:read-only { color: var(--ink-soft); cursor: default; }
select.cell-input { -webkit-appearance: none; appearance: none; cursor: pointer; }
.meta-cell { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); padding: 8px 12px; }
.row-del {
  cursor: pointer; color: var(--ink-soft); text-align: center; padding: 6px !important;
}
.row-del:hover { color: var(--danger); }
.empty { padding: 60px; text-align: center; color: var(--ink-soft); }

/* status / secret / link cell types */
select.cell-input[style] { font-family: var(--mono); }
.secret-cell, .link-cell { display: flex; align-items: center; gap: 6px; padding-right: 8px; }
.secret-cell .cell-input, .link-cell .cell-input { flex: 1; }
.reveal {
  font-size: 10px; text-transform: uppercase; letter-spacing: .04em;
  border: 1px solid var(--line-strong); background: var(--panel);
  padding: 2px 7px; border-radius: 2px; cursor: pointer; color: var(--ink-soft);
}
.reveal:hover { border-color: var(--ink); color: var(--ink); }
.open-link, .cell-link {
  color: var(--accent); font-weight: 600; text-decoration: none;
  font-family: var(--sans); font-size: 12px; white-space: nowrap; padding-right: 4px;
}
.open-link:hover, .cell-link:hover { text-decoration: underline; }

/* role pill in users table */
.pill {
  font-family: var(--mono); font-size: 11px; padding: 3px 8px; border-radius: 2px;
  text-transform: uppercase; letter-spacing: .05em;
}
.pill.super_admin { background: #fde3d3; color: var(--accent); }
.pill.employee { background: #dbeafe; color: #1d4ed8; }
.pill.viewer { background: #e7e5e4; color: #57534e; }
.users-cell { padding: 10px 14px !important; }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(26,25,22,.55);
  display: grid; place-items: center; z-index: 50; padding: 20px;
}
.modal {
  width: 460px; max-width: 100%; max-height: 88vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--line-strong);
  border-radius: 4px; box-shadow: var(--shadow);
}
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px; border-bottom: 1px solid var(--line);
}
.modal-head h3 { margin: 0; font-size: 18px; }
.modal-body { padding: 22px; }
.modal .btn-block { margin-top: 8px; }
.col-row {
  display: grid; grid-template-columns: 1fr 120px 30px; gap: 8px;
  align-items: end; margin-bottom: 10px;
}
.col-row label { margin: 0; }
.assign-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; border-bottom: 1px solid var(--line);
}
.switch { display: flex; align-items: center; gap: 8px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 12px 20px; border-radius: 3px;
  font-size: 14px; z-index: 100; box-shadow: var(--shadow);
}
.toast.error { background: var(--danger); }
.toast.ok { background: var(--ok); }