:root {
  --bg: #08111f;
  --panel: #111c2e;
  --card: #17253a;
  --border: #2d3d56;
  --text: #f8fafc;
  --muted: #9fb0c7;
  --accent: #38bdf8;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #facc15;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: radial-gradient(circle at top, #152641, var(--bg) 55%);
  color: var(--text);
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero, .panel, .metric-card {
  border: 1px solid var(--border);
  background: rgba(17, 28, 46, 0.92);
  border-radius: 22px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
  align-items: center;
}

.eyebrow, .alert-kicker {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  font-weight: 700;
  margin: 0 0 8px;
}

h1, h2 { margin: 0; }
h1 { font-size: clamp(30px, 5vw, 52px); }
h2 { font-size: 22px; }
p { color: var(--muted); line-height: 1.55; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

.btn {
  border: 0;
  border-radius: 13px;
  padding: 13px 17px;
  font-weight: 800;
  cursor: pointer;
}

.btn-primary { background: var(--success); color: #04130a; }
.btn-secondary { background: #24364f; color: var(--text); border: 1px solid var(--border); }
.btn:disabled { cursor: default; opacity: 0.9; }
.btn-primary.is-active { background: var(--success); color: #04130a; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin: 18px 0;
}

.metric-card { padding: 18px; }
.metric-card span { color: var(--muted); display: block; margin-bottom: 8px; }
.metric-card strong { font-size: 24px; color: var(--text); }
.metric-card strong.active, .metric-card strong.connected { color: var(--success); }
.metric-card strong.error, .metric-card strong.reconnecting { color: var(--warning); }
.metric-card strong.offline { color: var(--danger); }

.connection-panel {
  display: none;
  margin: -4px 0 18px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(36, 54, 79, 0.72);
  color: var(--text);
  font-weight: 700;
}

.connection-panel.is-visible { display: block; }
.connection-panel.reconnecting { border-color: rgba(250, 204, 21, 0.55); }
.connection-panel.offline { border-color: rgba(239, 68, 68, 0.65); background: rgba(127, 29, 29, 0.35); }

.panel { padding: 22px; margin-bottom: 18px; }
.safety-panel { display: block; }
.safety-panel strong { color: var(--text); }

.content-grid {
  display: grid;
  grid-template-columns: 1.7fr 0.8fr;
  gap: 18px;
}

.table-wrap { overflow-x: auto;margin-top: 15px;  }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { text-align: left; padding: 13px; border-bottom: 1px solid var(--border); }
th { color: #bfdbfe; background: #07101e; }
.mag { color: var(--warning); font-weight: 800; }
.alert-row { background: rgba(250,204,21,.16); outline: 1px solid rgba(250,204,21,.45); }

.map-card {
  background: #091426;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  margin: 18px 0;
}

.map-box {
  height: 220px;
  border-radius: 16px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(255,255,255,.12) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(255,255,255,.12) 50%, transparent 51%),
    radial-gradient(circle at 55% 40%, rgba(56,189,248,.35), transparent 28%),
    linear-gradient(135deg, #0e2139, #12233a);
  position: relative;
  overflow: hidden;
}

.map-box::after {
  content: "Zona ampliada Venezuela / Caribe";
  position: absolute;
  left: 16px;
  bottom: 14px;
  background: rgba(8,17,31,.8);
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text);
  font-weight: 700;
}

.zone-list { color: var(--muted); line-height: 1.8; padding-left: 18px; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.history-list { color: var(--muted); display: grid; gap: 10px; margin-top: 16px; }
.history-item { padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); color: var(--text); }
.history-item small { color: var(--muted); display: block; margin-top: 4px; }

.alert-screen {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 26px;
  background:
    radial-gradient(circle at center, rgba(255,255,255,.18), transparent 28%),
    linear-gradient(135deg, #991b1b, #dc2626 48%, #450a0a);
  animation: emergency-pulse 0.9s infinite;
}

.alert-screen::before,
.alert-screen::after {
  content: "";
  position: absolute;
  inset: 24px;
  border: 3px solid rgba(255,255,255,.72);
  border-radius: 28px;
  pointer-events: none;
  animation: scan-border 1.2s infinite;
}

.alert-screen::after {
  inset: 44px;
  opacity: .45;
  animation-delay: .2s;
}

.alert-content {
  max-width: 850px;
  position: relative;
  z-index: 2;
  transform-origin: center;
  animation: alert-pop 0.45s ease-out;
}
.alert-content h2 { font-size: clamp(38px, 7vw, 82px); text-transform: uppercase; }
.alert-content p { color: white; font-size: clamp(20px, 3vw, 30px); }
.alert-close { background: white; color: #7f1d1d; margin-top: 16px; }

@keyframes emergency-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.25); }
}

@keyframes scan-border {
  0% { transform: scale(.98); opacity: .35; }
  50% { transform: scale(1.01); opacity: .85; }
  100% { transform: scale(.98); opacity: .35; }
}

@keyframes alert-pop {
  0% { transform: scale(.92); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

:fullscreen body,
:fullscreen {
  background: var(--bg);
}

@media (max-width: 980px) {
  .metrics-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 850px) {
  .hero, .content-grid { grid-template-columns: 1fr; display: grid; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { justify-content: flex-start; }
}

@media (max-width: 680px) {
  .table-wrap { overflow-x: visible; }
  table, thead, tbody, tr, td { display: block; width: 100%; }
  table { min-width: 0; border-collapse: separate; border-spacing: 0 12px; }
  thead { display: none; }
  tr { border: 1px solid var(--border); border-radius: 16px; background: var(--card); overflow: hidden; margin-bottom:16px;}
  td { display: grid; grid-template-columns: 116px 1fr; gap: 12px; border-bottom: 1px solid rgba(255,255,255,.08); padding: 12px; word-break: break-word; }
  td::before { content: attr(data-label); color: var(--muted); font-weight: 700; }
  td[colspan] { display: block; }
  td[colspan]::before { content: none; }
}

@media (max-width: 520px) {
  .app-shell { width: min(100% - 20px, 1180px); padding-top: 14px; }
  .hero, .panel { padding: 18px; border-radius: 18px; }
  .metrics-grid { grid-template-columns: 1fr; }
  .metric-card strong { font-size: 22px; }
  .hero-actions .btn { width: 100%; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .map-box { height: 170px; }
  td { grid-template-columns: 94px 1fr; }
}

/* Pantalla previa SismoVE */
.intro-shell {
  width: min(1040px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 42px 0;
  display: grid;
  place-items: center;
}

.intro-card {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(17, 28, 46, 0.94);
  border-radius: 28px;
  padding: clamp(24px, 5vw, 46px);
}

.intro-card h1 {
  max-width: 780px;
}

.intro-lead {
  max-width: 780px;
  font-size: 18px;
  color: var(--text);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.intro-info {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 18px;
  padding: 18px;
}

.intro-info h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.intro-info p {
  margin: 0;
}

.intro-warning {
  border-color: rgba(250, 204, 21, 0.45);
  background: rgba(250, 204, 21, 0.08);
}

.intro-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-width: 220px;
  min-height: 50px;
}

.intro-footnote {
  margin-bottom: 0;
  font-size: 14px;
}

@media (max-width: 760px) {
  .intro-grid { grid-template-columns: 1fr; }
  .intro-cta { width: 100%; }
}