/**
 * Tema unificado (arena / azul) — Paraná, Paraguay, Pasos
 */

:root {
  --sand: #f4efe6;
  --sand-dark: #e8dfd0;
  --ink: #1a2332;
  --muted: #4a5563;
  --water: #1e5f8a;
  --water-light: #2d7ab5;
  --accent: #c45c26;
  --ok: #1e6b45;
  --ok-bg: rgba(46, 140, 90, 0.14);
  --warn: #9a5b12;
  --warn-bg: rgba(196, 92, 38, 0.14);
  --danger: #8b1e1e;
  --danger-bg: rgba(196, 68, 68, 0.12);
  --card: #fffdf9;
  --radius: 14px;
  --font: "DM Sans", system-ui, "Segoe UI", sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  /* Sistema mono: evita descargar JetBrains Mono (~30 KB) en el critical path */
  --font-mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas,
    monospace;
  --focus: 0 0 0 3px rgba(30, 95, 138, 0.35);
  /* Reserva de altura tabla → menos CLS al reemplazar skeleton */
  --table-reserve: min(62vh, 720px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  color: var(--ink);
  background: var(--sand);
  line-height: 1.5;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 120% 80% at 100% 0%, rgba(30, 95, 138, 0.12), transparent 50%),
    radial-gradient(ellipse 80% 60% at 0% 100%, rgba(196, 92, 38, 0.08), transparent 45%),
    var(--sand);
}

.hero {
  padding: 2rem clamp(1rem, 4vw, 3rem) 1.5rem;
  border-bottom: 1px solid var(--sand-dark);
  background: linear-gradient(180deg, var(--card) 0%, transparent 100%);
}

.hero__kicker {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--water);
  font-weight: 600;
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.hero__sub {
  margin: 0.75rem 0 1.25rem;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

/* ─── Nav / hamburguesa ───────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--sand-dark);
  background: var(--card);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin: 0.35rem 0;
  border: 1px solid var(--sand-dark);
  border-radius: 10px;
  background: var(--sand);
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bars::before {
  top: -6px;
}

.nav-toggle__bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  flex: 1;
}

.tabs__item {
  display: inline-block;
  padding: 0.7rem 1.15rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tabs__item:hover {
  color: var(--ink);
}

.tabs__item--current {
  color: var(--water);
  border-bottom-color: var(--water);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 999px;
  border: 2px solid var(--water);
  background: var(--water);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: var(--water-light);
  border-color: var(--water-light);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn--ghost {
  background: transparent;
  color: var(--water);
}

.btn--ghost:hover:not(:disabled) {
  background: rgba(30, 95, 138, 0.08);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.btn:focus-visible,
.tabs__item:focus-visible,
.btn-mini:focus-visible,
.link-hist:focus-visible,
.link-more:focus-visible,
.nav-toggle:focus-visible,
.auth-tab:focus-visible,
.chip-filter:focus-visible,
.filter-input:focus-visible,
.field__input:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.main {
  flex: 1 0 auto;
  width: 100%;
  max-width: min(1600px, 100%);
  margin: 0 auto;
  padding: 1.25rem clamp(1rem, 4vw, 3rem) 3rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.toolbar {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-input {
  width: 100%;
  max-width: 420px;
  font-family: inherit;
  font-size: 1rem;
  padding: 0.65rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--sand-dark);
  background: var(--card);
  color: var(--ink);
  outline: none;
}

.filter-input:focus {
  border-color: var(--water-light);
  box-shadow: 0 0 0 2px rgba(30, 95, 138, 0.15);
}

.filter-input::placeholder {
  color: var(--muted);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip-filter {
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--sand-dark);
  background: var(--card);
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.chip-filter:hover {
  color: var(--ink);
  border-color: var(--water-light);
}

.chip-filter--active {
  background: rgba(30, 95, 138, 0.12);
  border-color: var(--water);
  color: var(--water);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  margin: 0 0 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--sand-dark);
  background: var(--card);
}

.status--loading {
  border-color: var(--water-light);
  box-shadow: 0 0 0 2px rgba(30, 95, 138, 0.12);
}

.status--error {
  border-color: #c44;
  color: var(--danger);
}

.status__text {
  margin: 0;
  font-size: 0.95rem;
  flex: 1 1 12rem;
}

.status__badge {
  flex: 0 0 auto;
}

.age-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--sand-dark);
  background: var(--sand);
  color: var(--ink);
}

.age-badge--live {
  border-color: var(--water);
  color: var(--water);
  background: rgba(30, 95, 138, 0.08);
}

.age-badge--fresh {
  border-color: #2a7a4b;
  color: #1e5c38;
  background: rgba(42, 122, 75, 0.1);
}

.age-badge--stale {
  border-color: #b24e1e;
  color: #8a3a14;
  background: rgba(178, 78, 30, 0.1);
}

.sparkline-btn {
  display: inline-flex;
  cursor: pointer;
  color: var(--water);
  border-radius: 4px;
}

.sparkline-btn:hover,
.sparkline-btn:focus-visible {
  outline: 2px solid var(--water-light);
  outline-offset: 2px;
}

.chart-modal {
  border: none;
  border-radius: 14px;
  padding: 0;
  max-width: min(640px, calc(100vw - 2rem));
  width: 100%;
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 18px 48px rgba(26, 35, 50, 0.22);
}

.chart-modal::backdrop {
  background: rgba(26, 35, 50, 0.45);
}

.chart-modal__inner {
  padding: 1.1rem 1.25rem 1.35rem;
}

.chart-modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.chart-modal__title {
  margin: 0;
  font-family: Fraunces, Georgia, serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--water);
}

.chart-svg {
  color: var(--water);
  display: block;
}

.chart-label {
  font-size: 11px;
  fill: currentColor;
  opacity: 0.7;
  font-family: var(--font-mono);
}

.chart-empty {
  margin: 0.5rem 0;
  color: var(--muted);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.meta[hidden],
.legend[hidden],
.toolbar[hidden],
.warnings[hidden] {
  display: none !important;
}

.meta--grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}

.meta__chip {
  padding: 0.65rem 0.95rem;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--sand-dark);
  font-size: 0.85rem;
}

.meta__chip--block {
  border-radius: var(--radius);
  min-width: 0;
}

.meta__chip--block .meta__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.meta__chip--block .meta__value {
  display: block;
  font-weight: 600;
  color: var(--ink);
  font-size: 0.88rem;
  word-break: break-word;
}

.meta__label {
  color: var(--muted);
  margin-right: 0.35rem;
}

.meta__value {
  font-weight: 600;
  color: var(--ink);
}

.meta__link {
  color: var(--water);
  text-decoration: none;
}

.meta__link:hover {
  text-decoration: underline;
}

.warnings {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  border: 1px solid #e0c9a8;
  background: #fff8ee;
}

.warnings__title {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  color: var(--accent);
}

.warnings__list {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.table-wrap,
#table-section,
#table-root {
  width: 100%;
  min-height: var(--table-reserve);
}

.table-wrap--empty,
#table-section.table-wrap--empty,
#table-root.table-wrap--empty {
  min-height: 0;
}

.table-scroll {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--sand-dark);
  background: var(--card);
  box-shadow: 0 12px 40px rgba(26, 35, 50, 0.06);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding: 0.75rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
}

.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: linear-gradient(180deg, #eef4f8 0%, #e4ecf3 100%);
  text-align: left;
  padding: 0.75rem 0.85rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #3d4a5c;
  border-bottom: 2px solid var(--sand-dark);
  white-space: nowrap;
}

.data-table tbody td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--sand-dark);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background: rgba(30, 95, 138, 0.04);
}

.data-table .col-localidad,
.data-table .col-puerto {
  font-weight: 600;
  color: var(--ink);
}

.data-table .num {
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* Tendencia: baja=verde, crece=rojo (DESIGN.md) */
.estado {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}

.estado--baja {
  background: var(--ok-bg);
  color: var(--ok);
  border: 1px solid rgba(30, 107, 69, 0.35);
}

.estado--crece {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(139, 30, 30, 0.35);
}

.estado--estac {
  background: rgba(74, 85, 99, 0.1);
  color: var(--muted);
  border: 1px solid var(--sand-dark);
}

.estado--neutral {
  color: var(--muted);
  border: 1px solid var(--sand-dark);
}

/* Semáforo hidrométrico */
.umbral {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.umbral::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: currentColor;
}

.umbral--normal {
  background: var(--ok-bg);
  color: var(--ok);
}

.umbral--alerta {
  background: var(--warn-bg);
  color: var(--warn);
}

.umbral--evacuacion {
  background: var(--danger-bg);
  color: var(--danger);
}

.umbral--sin-dato {
  background: rgba(74, 85, 99, 0.08);
  color: var(--muted);
}

.umbral--sin-dato::before {
  opacity: 0.45;
}

.sparkline {
  display: inline-block;
  vertical-align: middle;
  color: var(--water);
}

.sparkline--up {
  color: var(--danger);
}

.sparkline--down {
  color: var(--ok);
}

.sparkline--flat {
  color: var(--muted);
}

.sparkline--empty {
  display: inline-block;
  width: 72px;
  height: 28px;
  background: linear-gradient(90deg, var(--sand-dark), transparent);
  border-radius: 4px;
  opacity: 0.5;
}

.skel {
  display: block;
  height: 0.85rem;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--sand-dark) 0%, #f7f2ea 50%, var(--sand-dark) 100%);
  background-size: 200% 100%;
  animation: skel-shine 1.2s ease-in-out infinite;
}

@keyframes skel-shine {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

.data-table--skeleton td {
  padding: 0.85rem;
}

.link-hist,
.link-more {
  color: var(--water);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.85rem;
}

.link-hist:hover,
.link-more:hover {
  text-decoration: underline;
}

.link-more {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  background: rgba(30, 95, 138, 0.1);
}

.link-more:hover {
  background: rgba(30, 95, 138, 0.18);
  text-decoration: none;
}

.empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--muted);
  border: 1px dashed var(--sand-dark);
  border-radius: var(--radius);
}

.empty--inline {
  margin-top: 1rem;
  padding: 1rem;
}

/* ─── Auth (pasos) ────────────────────────────────────────────────────────── */
.user-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: rgba(30, 95, 138, 0.1);
  border: 1px solid var(--sand-dark);
  color: var(--water);
  font-weight: 600;
  font-size: 0.85rem;
}

.auth-card {
  max-width: 420px;
  margin: 0 auto 1.5rem;
  padding: 1.25rem clamp(1rem, 3vw, 1.5rem);
  border-radius: var(--radius);
  border: 1px solid var(--sand-dark);
  background: var(--card);
  box-shadow: 0 12px 40px rgba(26, 35, 50, 0.06);
}

.auth-tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--sand-dark);
}

.auth-tab {
  flex: 1;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 0.5rem;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.auth-tab:hover {
  color: var(--ink);
}

.auth-tab--current {
  color: var(--water);
  border-bottom-color: var(--water);
}

.auth-card .field {
  margin-bottom: 0.9rem;
}

.field__hint {
  margin: 0.35rem 0 0;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--muted);
}

.auth-tab[hidden] {
  display: none;
}

.form-card {
  margin-bottom: 1.5rem;
  padding: 1.25rem clamp(1rem, 3vw, 1.5rem);
  border-radius: var(--radius);
  border: 1px solid var(--sand-dark);
  background: var(--card);
  box-shadow: 0 12px 40px rgba(26, 35, 50, 0.06);
}

.form-card__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem 1rem;
}

.field {
  display: flex;
  flex-direction: column;
}

.field__label {
  margin-bottom: 0.3rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}

.field__input {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--sand-dark);
  background: var(--sand);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field__input:focus {
  border-color: var(--water-light);
  box-shadow: 0 0 0 2px rgba(30, 95, 138, 0.15);
  background: var(--card);
}

.form-error {
  margin: 1rem 0 0;
  padding: 0.6rem 0.85rem;
  border-radius: 10px;
  background: rgba(196, 68, 68, 0.08);
  border: 1px solid #c44;
  color: var(--danger);
  font-size: 0.88rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.row-actions {
  white-space: nowrap;
}

.btn-mini {
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--water);
  background: rgba(30, 95, 138, 0.08);
  color: var(--water);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-mini + .btn-mini {
  margin-left: 0.4rem;
}

.btn-mini:hover {
  background: rgba(30, 95, 138, 0.18);
}

.btn-mini--danger {
  border-color: #c44;
  color: var(--danger);
  background: rgba(196, 68, 68, 0.08);
}

.btn-mini--danger:hover {
  background: rgba(196, 68, 68, 0.18);
}

.footer {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  align-items: flex-start;
  padding: 1.25rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--sand-dark);
  font-size: 0.85rem;
  color: var(--muted);
}

.footer a {
  color: var(--water);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.footer code {
  font-size: 0.8em;
  background: rgba(30, 95, 138, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

.footer__disclaimer {
  margin: 0;
  max-width: 42rem;
  font-size: 0.8rem;
  line-height: 1.45;
}

/* Cards en móvil */
@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .tabs {
    display: none;
    flex-direction: column;
    width: 100%;
    padding-bottom: 0.5rem;
  }

  .tabs.tabs--open {
    display: flex;
  }

  .site-nav {
    flex-wrap: wrap;
  }

  .tabs__item {
    border-bottom: 1px solid var(--sand-dark);
    margin-bottom: 0;
  }

  .tabs__item--current {
    border-bottom-color: var(--sand-dark);
    background: rgba(30, 95, 138, 0.06);
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .data-table thead {
    display: none;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table tbody tr {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--sand-dark);
  }

  .data-table tbody tr:last-child {
    border-bottom: 0;
  }

  .data-table tbody td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.35rem 0;
    border-bottom: 0;
    text-align: right;
  }

  .data-table tbody td::before {
    content: attr(data-label);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    text-align: left;
    flex: 0 0 42%;
  }

  .data-table .col-puerto,
  .data-table .col-localidad {
    font-size: 1.05rem;
    padding-bottom: 0.55rem;
    margin-bottom: 0.25rem;
    border-bottom: 1px dashed var(--sand-dark);
  }

  .data-table--skeleton tbody td::before {
    content: none;
  }
}