/* app.css — layout styles (extends scada.css variables) */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  background: var(--sc-bg, #1a1d23);
  color: var(--sc-text, #e2e8f0);
}

/* ── Navbar ─────────────────────────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
  height: 52px;
  background: var(--sc-surface, #22262f);
  border-bottom: 1px solid var(--sc-border, #2d3340);
  position: sticky;
  top: 0;
  z-index: 300;
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--sc-accent, #3b82f6);
  letter-spacing: .05em;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: .25rem;
  flex: 1;
}

.nav-link {
  padding: .4rem .85rem;
  border-radius: 6px;
  color: var(--sc-text-muted, #94a3b8);
  text-decoration: none;
  font-size: .875rem;
  transition: background .15s, color .15s;
}

.nav-link:hover,
.nav-link.active {
  background: var(--sc-surface2, #2d3340);
  color: var(--sc-text, #e2e8f0);
}

.nav-link.active {
  color: var(--sc-accent, #3b82f6);
}

.nav-drop { position: relative; }
.nav-drop-btn {
  background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: .875rem;
}
.nav-drop-menu {
  display: none; position: absolute; top: calc(100% + 6px); left: 0;
  background: var(--sc-surface, #1e2330); border: 1px solid var(--sc-border, #2d3340);
  border-radius: 8px; min-width: 180px; z-index: 400;
  box-shadow: 0 8px 24px rgba(0,0,0,.4); overflow: hidden;
}
.nav-drop-menu.open { display: block; }
.nav-drop-item {
  display: block; padding: .45rem .75rem;
  color: var(--sc-text-muted, #94a3b8); text-decoration: none;
  font-size: .875rem; transition: background .12s, color .12s;
}
.nav-drop-item:hover { background: var(--sc-surface2, #2d3340); color: var(--sc-text, #e2e8f0); }
.nav-drop-item + .nav-drop-item { border-top: 1px solid var(--sc-border, #2d3340); }

.nav-right {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-left: auto;
}

/* SSE status indicator — estilos en scada.css, aquí solo layout */
[data-scada-status] {
  font-size: .75rem;
  white-space: nowrap;
}

[data-scada-status][data-sse-state="connecting"]::before {
  animation: blink 1s infinite;
}

@keyframes blink { 50% { opacity: .3; } }

/* Alarm badge */
.alarm-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: 10px;
  background: #ef4444;
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  line-height: 1;
}

.alarm-badge:empty,
.alarm-badge[data-count="0"] { display: none; }

/* User info + logout */
.nav-user {
  font-size: .8rem;
  color: var(--sc-text-muted, #94a3b8);
}

.btn-logout {
  padding: .35rem .7rem;
  border: 1px solid var(--sc-border, #2d3340);
  border-radius: 6px;
  background: transparent;
  color: var(--sc-text-muted, #94a3b8);
  font-size: .8rem;
  cursor: pointer;
  transition: background .15s, color .15s;
}

.btn-logout:hover {
  background: #ef444422;
  color: #ef4444;
  border-color: #ef4444;
}

/* ── Page content ───────────────────────────────────────────────────────────── */
.page {
  padding: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.page-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--sc-text, #e2e8f0);
}

/* ── Login page ─────────────────────────────────────────────────────────────── */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.login-card {
  background: var(--sc-surface, #22262f);
  border: 1px solid var(--sc-border, #2d3340);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 360px;
}

.login-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--sc-accent, #3b82f6);
}

.login-logo p {
  font-size: .8rem;
  color: var(--sc-text-muted, #94a3b8);
  margin-top: .25rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: .8rem;
  color: var(--sc-text-muted, #94a3b8);
  margin-bottom: .4rem;
}

.form-input {
  width: 100%;
  padding: .6rem .85rem;
  background: var(--sc-bg, #1a1d23);
  border: 1px solid var(--sc-border, #2d3340);
  border-radius: 7px;
  color: var(--sc-text, #e2e8f0);
  font-size: .9rem;
  outline: none;
  transition: border-color .15s;
}

.form-input:focus {
  border-color: var(--sc-accent, #3b82f6);
}

.btn-primary {
  width: 100%;
  padding: .65rem;
  background: var(--sc-accent, #3b82f6);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s;
  margin-top: .5rem;
}

.btn-primary:hover   { opacity: .9; }
.btn-primary:active  { opacity: .8; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.alert {
  padding: .65rem .85rem;
  border-radius: 7px;
  font-size: .85rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: #ef444420;
  border: 1px solid #ef4444;
  color: #fca5a5;
}

/* ── Dashboard grid ─────────────────────────────────────────────────────────── */
.logo-section {
  margin-bottom: 2rem;
}

.logo-title {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--sc-text-muted, #94a3b8);
  margin-bottom: .85rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--sc-border, #2d3340);
}

.widget-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ── Alarms page ────────────────────────────────────────────────────────────── */
.alarm-toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.btn-sm {
  padding: .35rem .75rem;
  border-radius: 6px;
  border: 1px solid var(--sc-border, #2d3340);
  background: var(--sc-surface, #22262f);
  color: var(--sc-text, #e2e8f0);
  font-size: .8rem;
  cursor: pointer;
  transition: background .15s;
}

.btn-sm:hover { background: var(--sc-surface2, #2d3340); }
.btn-sm.active {
  background: var(--sc-accent, #3b82f6);
  border-color: var(--sc-accent, #3b82f6);
  color: #fff;
}

.alarm-table-wrap {
  overflow-x: auto;
}

table.alarm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}

.alarm-table th,
.alarm-table td {
  padding: .6rem .85rem;
  text-align: left;
  border-bottom: 1px solid var(--sc-border, #2d3340);
  white-space: nowrap;
}

.alarm-table th {
  color: var(--sc-text-muted, #94a3b8);
  font-weight: 600;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  background: var(--sc-surface, #22262f);
}

.alarm-table tr:hover td { background: var(--sc-surface2, #2d3340); }

.sev-CRITICAL { color: #ef4444; font-weight: 700; }
.sev-HIGH     { color: #f97316; font-weight: 600; }
.sev-MEDIUM   { color: #f59e0b; }
.sev-LOW      { color: #94a3b8; }

.ack-btn {
  padding: .3rem .65rem;
  border-radius: 5px;
  border: 1px solid var(--sc-accent, #3b82f6);
  background: transparent;
  color: var(--sc-accent, #3b82f6);
  font-size: .75rem;
  cursor: pointer;
  transition: background .15s;
}

.ack-btn:hover { background: var(--sc-accent, #3b82f6); color: #fff; }
.ack-btn:disabled { opacity: .4; cursor: not-allowed; }

.acked { color: #22c55e; font-size: .8rem; }
.empty-row td { color: var(--sc-text-muted, #94a3b8); text-align: center; padding: 2rem; }

/* ── History page ───────────────────────────────────────────────────────────── */
.history-controls {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: flex-end;
  margin-bottom: 1.25rem;
  background: var(--sc-surface, #22262f);
  border: 1px solid var(--sc-border, #2d3340);
  border-radius: 8px;
  padding: 1rem;
}

.history-controls label {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  font-size: .75rem;
  color: var(--sc-text-muted, #94a3b8);
}

.history-controls select,
.history-controls input[type="datetime-local"] {
  padding: .45rem .7rem;
  background: var(--sc-bg, #1a1d23);
  border: 1px solid var(--sc-border, #2d3340);
  border-radius: 6px;
  color: var(--sc-text, #e2e8f0);
  font-size: .85rem;
  outline: none;
}

.history-controls select:focus,
.history-controls input:focus { border-color: var(--sc-accent, #3b82f6); }

.btn-fetch {
  padding: .5rem 1.1rem;
  background: var(--sc-accent, #3b82f6);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-end;
}

.btn-fetch:hover { opacity: .9; }

.history-chart-wrap {
  background: var(--sc-surface, #22262f);
  border: 1px solid var(--sc-border, #2d3340);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
}

#history-chart {
  display: block;
  width: 100%;
  min-height: 300px;
}

.history-meta {
  font-size: .78rem;
  color: var(--sc-text-muted, #94a3b8);
  margin-top: .75rem;
}

/* ── Hamburger button (oculto en escritorio) ────────────────────────────────── */
.nav-hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  font-size: 1.3rem; color: var(--sc-text-muted, #94a3b8);
  padding: .3rem .5rem; margin-left: auto; line-height: 1;
}
.nav-hamburger:hover { color: var(--sc-text, #e2e8f0); }

/* ── Menú móvil (oculto en escritorio) ──────────────────────────────────────── */
.nav-mob {
  display: none;
}
.nav-mob.open {
  display: block;
  position: fixed;
  top: 52px; left: 0; right: 0;
  background: var(--sc-surface, #22262f);
  border-bottom: 1px solid var(--sc-border, #2d3340);
  z-index: 299;
  max-height: calc(100vh - 52px);
  overflow-y: auto;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
.nav-mob-item {
  display: flex; align-items: center;
  padding: .85rem 1.25rem;
  color: var(--sc-text-muted, #94a3b8); text-decoration: none;
  font-size: .95rem; border-bottom: 1px solid var(--sc-border, #2d3340);
  transition: background .12s, color .12s;
}
.nav-mob-item:hover  { background: var(--sc-surface2, #2d3340); color: var(--sc-text, #e2e8f0); }
.nav-mob-item.active { color: var(--sc-accent, #3b82f6); }
.nav-mob-sub {
  padding-left: 2rem;
  font-size: .88rem;
  background: color-mix(in srgb, var(--sc-bg, #1a1d23) 40%, var(--sc-surface, #22262f));
}
.nav-mob-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 1.25rem;
}
.nav-mob-user { font-size: .85rem; color: var(--sc-text-muted, #94a3b8); }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .nav { padding: 0 1rem; }
  .nav-links, .nav-right { display: none; }
  .nav-hamburger { display: block; }
  .page { padding: 1rem; }
}