:root {
  --ink: #1B1D18;
  --paper: #EFEBE0;
  --paper-dim: #E3DECE;
  --olive: #565F3E;
  --olive-deep: #33381F;
  --olive-line: #7A8460;
  --brass: #A6862F;
  --gold: #D4AF37;
  --gold-light: #F3DA8C;
  --amber: #B5651D;
  --maroon: #7A1F2B;
  --maroon-deep: #5A141D;
  --ok: #3F6B4A;
  --white: #FAF8F2;
  --text: #232519;
  --text-muted: #5B5F4C;

  --gold-grad: linear-gradient(135deg, #B8860B 0%, #F3DA8C 45%, #D4AF37 55%, #8A6A16 100%);
  --sidebar-grad: linear-gradient(165deg, #3B4126 0%, #262B18 55%, #1B1D18 100%);
  --ribbon-grad: linear-gradient(90deg, var(--olive-deep) 0%, var(--olive-deep) 30%, var(--gold) 30%, var(--gold) 50%, var(--maroon) 50%, var(--maroon) 70%, var(--olive-deep) 70%, var(--olive-deep) 100%);

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
}
.hidden { display: none !important; }

input, select, button { font-family: var(--font-body); font-size: 0.95rem; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; }

/* ---------- Emblem ---------- */
.badge-plate {
  display: flex; align-items: center; justify-content: center;
  width: 132px; margin: 0 auto 16px;
  background: var(--white);
  border-radius: 10px;
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 1px var(--olive-deep), 0 8px 18px rgba(0,0,0,0.35), inset 0 0 0 3px rgba(212,175,55,0.15);
  padding: 8px 10px;
}
.badge-plate.small {
  width: 64px; margin: 0; border-radius: 7px; border-width: 1.5px;
  padding: 3px 4px;
  box-shadow: 0 0 0 1px var(--olive-deep), 0 3px 8px rgba(0,0,0,0.35);
}
.badge-mark {
  width: 100%; height: auto; display: block;
}

/* Ribbon bar — tri-colour citation stripe */
.login-ribbon {
  width: 96px; height: 8px; margin: 0 auto 22px;
  background: var(--ribbon-grad);
  border-radius: 1px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.25);
}

.stamp {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--olive-deep);
  border: 2px solid var(--olive-deep);
  padding: 6px 14px;
  border-radius: 2px;
  position: relative;
}
.stamp::before, .stamp::after {
  content: '';
  position: absolute; width: 6px; height: 6px;
  border: 1px solid var(--brass);
  top: -4px;
}
.stamp::before { left: -4px; }
.stamp::after { right: -4px; }

/* ---------- Login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(circle at 30% 15%, rgba(212,175,55,0.10) 0%, transparent 45%),
    radial-gradient(circle at 75% 85%, rgba(122,31,43,0.18) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, #2A2E1D 0%, var(--ink) 75%);
  padding: 24px;
}
.login-card {
  position: relative;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-dim) 100%);
  border: 1px solid var(--olive-line);
  border-top: 5px solid var(--gold);
  border-radius: 8px;
  padding: 40px 36px 32px;
  width: 100%; max-width: 400px;
  text-align: center;
  box-shadow: 0 30px 70px rgba(0,0,0,0.5), 0 0 0 1px rgba(212,175,55,0.25);
}
.login-card::before, .login-card::after {
  content: '';
  position: absolute; top: 14px; width: 22px; height: 22px;
  border-top: 2px solid var(--gold); opacity: 0.7;
}
.login-card::before { left: 14px; border-left: 2px solid var(--gold); }
.login-card::after { right: 14px; border-right: 2px solid var(--gold); }
.stamp-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  line-height: 1.25;
  color: var(--olive-deep);
  margin: 0 0 4px;
}
.login-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  margin: 0 0 28px;
}
#login-form { display: flex; flex-direction: column; gap: 16px; text-align: left; }
#login-form label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); display: flex; flex-direction: column; gap: 6px; text-transform: uppercase; letter-spacing: 0.05em; }
#login-form input {
  padding: 10px 12px; border: 1.5px solid var(--olive-line); border-radius: 3px;
  background: var(--white); font-size: 1rem; color: var(--text);
}
.login-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 20px; line-height: 1.5; }
.dev-credit { font-size: 0.68rem; color: var(--text-muted); margin-top: 10px; text-align: center; font-style: italic; line-height: 1.5; }
.dev-credit-sidebar { color: var(--gold-light); margin-top: 10px; opacity: 0.85; }
.error-text { color: var(--amber); font-size: 0.85rem; font-weight: 600; margin: 4px 0 0; min-height: 1.2em; }

/* ---------- App shell ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 236px; flex-shrink: 0;
  background: var(--sidebar-grad);
  border-right: 3px solid var(--gold);
  box-shadow: 3px 0 14px rgba(0,0,0,0.25);
  color: var(--white);
  display: flex; flex-direction: column;
  padding: 0;
  position: relative;
}
.sidebar::before {
  content: '';
  display: block;
  height: 6px;
  background: var(--ribbon-grad);
}
.sidebar .brand,
.sidebar .nav,
.sidebar .sidebar-footer { padding-left: 16px; padding-right: 16px; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; padding-top: 20px; }
.brand-name { font-family: var(--font-display); font-weight: 600; letter-spacing: 0.06em; font-size: 0.95rem; color: var(--gold-light); }
.brand-sub { font-size: 0.7rem; color: #C9CBB8; letter-spacing: 0.05em; }
.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-btn {
  text-align: left; background: none; border: none; color: #D8DAC5;
  padding: 10px 12px; border-radius: 4px; font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.02em;
}
.nav-btn:hover { background: rgba(255,255,255,0.08); }
.nav-btn.active { background: var(--gold-grad); color: var(--ink); font-weight: 700; box-shadow: 0 2px 6px rgba(0,0,0,0.3); }
.sidebar-footer { border-top: 1px solid rgba(255,255,255,0.15); padding-top: 14px; padding-bottom: 20px; margin-top: 14px; }
.user-name { font-size: 0.8rem; color: #C9CBB8; margin-bottom: 8px; }
.btn-ghost {
  background: none; border: 1px solid rgba(255,255,255,0.3); color: var(--white);
  padding: 7px 12px; border-radius: 4px; font-size: 0.8rem; width: 100%;
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-inline {
  background: none; border: 1px solid var(--olive-line); color: var(--olive-deep);
  padding: 3px 8px; border-radius: 3px; font-size: 0.7rem; margin-left: 6px; width: auto;
}
.btn-inline:hover { background: var(--paper-dim); }

.main { flex: 1; padding: 28px 36px; max-width: 1100px; }
.panel-header { margin-bottom: 22px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.panel-header .btn-inline { font-size: 0.78rem; padding: 6px 12px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------- Overview stats ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px,1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--white); border: 1px solid var(--olive-line); border-left: 5px solid var(--olive);
  border-radius: 6px; padding: 18px; text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.stat-card:nth-child(1) { border-left-color: var(--olive); }
.stat-card:nth-child(2) { border-left-color: var(--brass); }
.stat-card:nth-child(3) { border-left-color: var(--maroon); }
.stat-card:nth-child(4) { border-left-color: var(--ok); }
.stat-num { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 600; color: var(--olive-deep); }
.stat-label { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 4px; }
.hint-block { background: var(--paper-dim); border-left: 4px solid var(--brass); padding: 14px 18px; border-radius: 3px; font-size: 0.9rem; color: var(--text-muted); max-width: 640px; }

/* ---------- Cards & forms ---------- */
.card { background: var(--white); border: 1px solid var(--olive-line); border-radius: 6px; padding: 22px 24px; margin-bottom: 22px; }
.card h3 { margin: 0 0 16px; font-family: var(--font-display); font-size: 1.05rem; letter-spacing: 0.02em; color: var(--olive-deep); }
.grid-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 18px; align-items: end; }
.grid-form label { display: flex; flex-direction: column; gap: 5px; font-size: 0.78rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.grid-form input, .grid-form select {
  padding: 9px 10px; border: 1.5px solid var(--olive-line); border-radius: 3px;
  background: var(--paper); font-size: 0.92rem; color: var(--text); font-weight: 400;
  text-transform: none; letter-spacing: normal;
}
.grid-form .span-2 { grid-column: span 2; }
.grid-form .checkbox { flex-direction: row; align-items: center; gap: 8px; font-size: 0.82rem; }
.grid-form .checkbox input { width: auto; }
.form-subhead {
  grid-column: span 2; margin: 8px 0 -4px; font-family: var(--font-display);
  font-size: 0.85rem; color: var(--olive-deep); border-top: 1px solid var(--olive-line); padding-top: 12px;
}
.ot-presets { display: flex; gap: 4px; margin-top: 4px; }
.ot-presets .btn-inline { margin-left: 0; }
.invoice-no-row { display: flex; align-items: center; gap: 4px; }
.invoice-no-prefix { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }
.invoice-no-part { width: 70px; padding: 9px 6px; border: 1.5px solid var(--olive-line); border-radius: 3px; background: var(--paper); font-family: var(--font-mono); text-align: center; }

/* ---------- Employee calendar ---------- */
.cal-header { display: flex; align-items: center; gap: 14px; margin: 14px 0 10px; }
.cal-label { font-family: var(--font-display); font-weight: 600; color: var(--olive-deep); }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-day {
  aspect-ratio: 1; border: 1px solid var(--olive-line); border-radius: 4px;
  display: flex; align-items: center; justify-content: center; font-family: var(--font-mono);
  font-size: 0.85rem; cursor: pointer; background: var(--white); color: var(--text);
}
.cal-day:hover { border-color: var(--brass); }
.cal-day.empty { border: none; cursor: default; }
.cal-day.pending { background: #F3D8C7; border-color: var(--amber); color: #7A3A10; }
.cal-day.confirmed { background: #D3E0D6; border-color: var(--ok); color: #204028; }

.btn-primary {
  background: linear-gradient(180deg, var(--olive) 0%, var(--olive-deep) 100%);
  color: var(--white); border: 1px solid var(--gold);
  padding: 10px 20px; border-radius: 4px; font-weight: 600; font-size: 0.9rem;
  letter-spacing: 0.03em; justify-self: start;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.btn-primary:hover { background: linear-gradient(180deg, var(--olive-deep) 0%, var(--ink) 100%); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; margin-top: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
thead th {
  text-align: left; font-family: var(--font-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted);
  border-bottom: 2px solid var(--olive-line); padding: 8px 10px;
}
tbody td { padding: 9px 10px; border-bottom: 1px solid var(--paper-dim); font-family: var(--font-mono); font-size: 0.82rem; }
tbody tr:hover { background: var(--paper-dim); }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; align-items: center; flex-wrap: wrap; border-right: none; border-bottom: 3px solid var(--gold); }
  .sidebar .brand, .sidebar .nav, .sidebar .sidebar-footer { padding-left: 14px; padding-right: 14px; }
  .brand { margin-bottom: 0; margin-right: auto; padding-top: 12px; padding-bottom: 12px; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .sidebar-footer { border: none; margin: 0 0 0 auto; padding-top: 0; padding-bottom: 0; display: flex; align-items: center; gap: 10px; }
  .main { padding: 20px 16px; }
  .grid-form { grid-template-columns: 1fr; }
  .grid-form .span-2 { grid-column: span 1; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}