@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

/* ============================================================
   TOKENS DE MARCA — MEIP Ingeniería (Gas & Petróleo)
   Rojo y gris tomados directamente del isotipo. El resto del
   sistema está pensado como un plano técnico / P&ID: bloque de
   título, sellos de aprobación, y una metáfora de "línea" para
   el estado de cada envío (en tránsito → abierta → caudal
   completo / cerrada).
   ============================================================ */
:root {
  --ink: #1c1c1e;
  --ink-soft: #2b2c2f;
  --paper: #f5f3ef;
  --panel: #ffffff;
  --line: #dcdad6;
  --line-strong: #b9b7b3;
  --steel: #6d6e71;
  --steel-light: #9a9b9e;

  --meip-red: #e31b24;
  --meip-red-dark: #b8151c;
  --meip-red-bg: #fbe2e2;

  --amber: #c9711a;
  --amber-bg: #f7e6d2;
  --green: #1f7a4c;
  --green-bg: #e0f0e6;
  --transit: #46586b;
  --transit-bg: #e6eaee;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14.5px;
  -webkit-font-smoothing: antialiased;
}

button { font-family: var(--font-body); cursor: pointer; }
input, select, textarea { font-family: var(--font-body); }
a { color: inherit; }
.hidden { display: none !important; }

/* ---------------- Login ---------------- */
#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  position: relative;
  overflow: hidden;
}
#login-screen::before {
  content: '';
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 38px 38px;
}
#login-screen::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: repeating-linear-gradient(-45deg, var(--meip-red), var(--meip-red) 14px, var(--ink-soft) 14px, var(--ink-soft) 28px);
}

.login-card {
  position: relative;
  width: 400px;
  background: var(--panel);
  border-radius: 3px;
  padding: 38px 38px 34px;
  box-shadow: 0 30px 70px rgba(0,0,0,0.45);
}

.login-logo { height: 46px; margin-bottom: 18px; display: block; }
.login-mark {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--steel);
  text-transform: uppercase;
  margin-bottom: 4px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.login-card h1 {
  font-family: var(--font-display);
  font-size: 21px;
  margin: 18px 0 22px 0;
  letter-spacing: -0.01em;
}

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 11px;
  color: var(--steel);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 14px;
  background: var(--panel);
  color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--meip-red);
  box-shadow: 0 0 0 3px var(--meip-red-bg);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  border-radius: 2px;
  padding: 10px 18px;
  font-size: 13.5px;
  font-weight: 600;
  background: var(--ink);
  color: white;
  transition: background 0.12s ease;
}
.btn:hover { background: var(--ink-soft); }
.btn.block { width: 100%; justify-content: center; }
.btn.secondary { background: var(--panel); color: var(--ink); border: 1px solid var(--line); }
.btn.secondary:hover { border-color: var(--ink); background: #faf9f7; }
.btn.danger { background: var(--meip-red-bg); color: var(--meip-red-dark); }
.btn.small { padding: 6px 11px; font-size: 12.5px; }

#login-form button[type=submit] { background: var(--meip-red); }
#login-form button[type=submit]:hover { background: var(--meip-red-dark); }

.error-msg {
  background: var(--meip-red-bg);
  color: var(--meip-red-dark);
  padding: 9px 12px;
  border-radius: 2px;
  font-size: 13px;
  margin-bottom: 14px;
  border-left: 3px solid var(--meip-red);
}

.login-hint {
  margin-top: 20px;
  font-size: 11px;
  color: var(--steel-light);
  font-family: var(--font-mono);
  line-height: 1.7;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}

/* ---------------- App shell ---------------- */
#app-screen {
  display: grid;
  grid-template-columns: 236px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--ink);
  color: #c7c8ca;
  display: flex;
  flex-direction: column;
}

.sidebar-letterhead { background: var(--panel); padding: 20px 18px 16px; }
.sidebar-logo { height: 34px; display: block; }
.sidebar-hazard {
  height: 4px;
  background: repeating-linear-gradient(-45deg, var(--meip-red), var(--meip-red) 10px, var(--ink) 10px, var(--ink) 20px);
}

.sidebar-body { padding: 20px 16px; display: flex; flex-direction: column; flex: 1; }

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-light);
  margin-bottom: 26px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 2px;
  font-size: 13.5px;
  font-weight: 500;
  color: #b9bac0;
  margin-bottom: 2px;
  border-left: 2px solid transparent;
}
.nav-item .tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  background: rgba(255,255,255,0.08);
  padding: 1px 6px;
  border-radius: 8px;
}
.nav-item:hover { background: rgba(255,255,255,0.05); color: white; }
.nav-item.active { background: rgba(227,27,36,0.12); color: white; border-left-color: var(--meip-red); }

.sidebar-footer { margin-top: auto; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.1); }
.user-chip { font-size: 12.5px; color: #cfd0d4; margin-bottom: 3px; }
.user-chip strong { color: white; }
.sector-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--meip-red);
  background: rgba(227,27,36,0.14);
  padding: 3px 8px;
  border-radius: 2px;
  margin-bottom: 12px;
}

.main { padding: 34px 44px; max-width: 1200px; }

.page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.page-header h2 { font-family: var(--font-display); font-size: 25px; margin: 0; letter-spacing: -0.01em; }
.page-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--meip-red);
  margin-bottom: 5px;
  display: block;
}
.page-header .sub { color: var(--steel); font-size: 13px; margin-top: 4px; }

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 18px; flex-wrap: wrap; }

.summary-cards { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 26px; }
.summary-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--line-strong);
  border-radius: 2px;
  padding: 15px 16px;
}
.summary-card .num { font-family: var(--font-mono); font-size: 25px; font-weight: 700; }
.summary-card .lbl { font-size: 11.5px; color: var(--steel); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.02em; }
.summary-card.amber { border-top-color: var(--amber); }
.summary-card.amber .num { color: var(--amber); }
.summary-card.green { border-top-color: var(--green); }
.summary-card.green .num { color: var(--green); }
.summary-card.red { border-top-color: var(--meip-red); }
.summary-card.red .num { color: var(--meip-red); }

/* ---------------- Table ---------------- */
table.reg { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); border-radius: 2px; overflow: hidden; }
table.reg thead th {
  text-align: left; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--steel); padding: 11px 14px; border-bottom: 1px solid var(--line); background: #faf9f7; font-weight: 600;
}
table.reg tbody td { padding: 12px 14px; border-bottom: 1px solid #eeece9; font-size: 13.5px; vertical-align: middle; }
table.reg tbody tr:last-child td { border-bottom: none; }
table.reg tbody tr:hover { background: #fbfaf8; }
table.reg tbody tr.clickable { cursor: pointer; }

.mono { font-family: var(--font-mono); }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.03em;
  padding: 3px 9px; border-radius: 2px; text-transform: uppercase; font-weight: 700;
  border: 1px solid transparent;
}
.chip .dot { width: 6px; height: 6px; border-radius: 50%; }
.chip.enviado { background: var(--transit-bg); color: var(--transit); border-color: rgba(70,88,107,0.25); }
.chip.enviado .dot { background: var(--transit); }
.chip.visto_sin_descargar { background: var(--amber-bg); color: var(--amber); border-color: rgba(201,113,26,0.3); }
.chip.visto_sin_descargar .dot { background: var(--amber); }
.chip.descargado { background: var(--green-bg); color: var(--green); border-color: rgba(31,122,76,0.3); }
.chip.descargado .dot { background: var(--green); }
.chip.revocado, .chip.vencido { background: var(--meip-red-bg); color: var(--meip-red-dark); border-color: rgba(227,27,36,0.3); }
.chip.revocado .dot, .chip.vencido .dot { background: var(--meip-red); }

.outdated-flag { font-family: var(--font-mono); font-size: 10px; color: var(--meip-red-dark); margin-left: 6px; font-weight: 700; }

/* ---------------- Traceability track ---------------- */
.trace-track { display: flex; align-items: center; gap: 0; }
.trace-step { display: flex; flex-direction: column; align-items: center; width: 64px; position: relative; }
.trace-step .node { width: 11px; height: 11px; border-radius: 50%; background: var(--panel); border: 2px solid var(--line-strong); z-index: 1; }
.trace-step.done .node { background: var(--ink); border-color: var(--ink); }
.trace-step .lbl { font-family: var(--font-mono); font-size: 9px; color: var(--steel-light); margin-top: 5px; text-transform: uppercase; }
.trace-step.done .lbl { color: var(--ink); font-weight: 600; }
.trace-step .ts { font-family: var(--font-mono); font-size: 8.5px; color: var(--steel-light); margin-top: 1px; }
.trace-line { height: 2px; flex: 1; background: var(--line); margin-top: -18px; }
.trace-line.done { background: var(--ink); }

/* ---------------- Modal ---------------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(28,28,30,0.55); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal {
  background: var(--panel); border-radius: 3px; border-top: 3px solid var(--meip-red);
  width: 460px; max-width: 92vw; max-height: 86vh; overflow-y: auto; padding: 26px 28px;
}
.modal h3 { font-family: var(--font-display); margin: 0 0 18px 0; font-size: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ---------------- Bloque de título (cajetín de plano técnico) ---------------- */
.title-block { background: var(--panel); border: 1px solid var(--line); border-radius: 2px; margin-bottom: 20px; }
.title-block-main { padding: 20px 24px 16px; border-bottom: 1px solid var(--line); }
.title-block-main h3 { font-family: var(--font-display); margin: 0 0 4px 0; font-size: 20px; }
.title-block-main .desc { color: var(--steel); font-size: 13px; }
.title-block-fields { display: grid; grid-template-columns: repeat(4, 1fr); }
.tb-field { padding: 10px 16px; border-right: 1px solid var(--line); }
.tb-field:last-child { border-right: none; }
.tb-field .k {
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--steel); display: block; margin-bottom: 3px;
}
.tb-field .v { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--ink); }

.detail-panel { background: var(--panel); border: 1px solid var(--line); border-radius: 2px; padding: 22px 24px; margin-bottom: 20px; }

.section-label {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--steel); margin: 22px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--line);
}

.empty-state { text-align: center; padding: 50px 20px; color: var(--steel); font-size: 13.5px; }
.empty-state .big { font-family: var(--font-display); font-size: 17px; color: var(--ink); margin-bottom: 6px; }

.copy-box {
  display: flex; gap: 8px; align-items: center; background: #f2f1ee; border: 1px solid var(--line);
  border-radius: 2px; padding: 8px 10px; font-family: var(--font-mono); font-size: 12px; word-break: break-all;
}

.toast {
  position: fixed; bottom: 24px; right: 24px; background: var(--ink); color: white; padding: 12px 18px;
  border-radius: 2px; font-size: 13px; z-index: 100; box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  border-left: 3px solid var(--meip-red);
}

/* ---------------- Página pública del proveedor ---------------- */
#provider-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--ink); padding: 20px; position: relative; }
#provider-screen::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 38px 38px;
}
.provider-card {
  position: relative; background: var(--panel); border-radius: 3px; width: 480px; max-width: 100%;
  padding: 40px 38px 36px; text-align: center; box-shadow: 0 30px 70px rgba(0,0,0,0.45);
}
.provider-logo { height: 40px; margin: 0 auto 22px; display: block; }
.provider-card .stamp {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em; color: var(--meip-red);
  text-transform: uppercase; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--line);
}
.provider-card h1 { font-family: var(--font-display); font-size: 21px; margin: 0 0 8px 0; }
.provider-card .doc-meta { color: var(--steel); font-size: 13px; margin-bottom: 26px; line-height: 1.6; }
#provider-screen .btn { background: var(--meip-red); }
#provider-screen .btn:hover { background: var(--meip-red-dark); }

@media (max-width: 860px) {
  #app-screen { grid-template-columns: 1fr; }
  .sidebar { display: block; }
  .sidebar-body { flex-direction: row; align-items: center; flex-wrap: wrap; }
  .summary-cards { grid-template-columns: repeat(2, 1fr); }
  .title-block-fields { grid-template-columns: repeat(2, 1fr); }
  .main { padding: 22px; }
}