/* SYA — Soluciones & Asesorías en Ingeniería
   Hoja de estilos única del sitio. Sin dependencias externas. */

:root {
  --color-primary: #12233d;
  --color-primary-dark: #0b1729;
  --color-primary-light: #1f3864;
  --color-accent: #0092ca;
  --color-accent-dark: #007099;
  --color-ink: #141515;
  --color-ink-soft: #3a3f44;
  --color-gray: #c3c4c4;
  --color-gray-soft: #e9ebee;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f8;
  --color-border: #dde1e6;
  --color-ok: #1a7f4e;
  --color-warn: #b5590a;
  --color-danger: #b3261e;

  --font-base: "Inter", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(20, 21, 21, 0.08);
  --shadow-md: 0 8px 24px rgba(18, 35, 61, 0.12);
  --header-h: 76px;
  --max-w: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--color-accent-dark); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4 { color: var(--color-primary); line-height: 1.25; margin: 0 0 0.6em; }
h1 { font-size: clamp(1.9rem, 1.4rem + 2vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
.lead { font-size: 1.15rem; color: var(--color-ink-soft); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-primary);
}
.brand img { height: 42px; width: auto; }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name strong { font-size: 1.05rem; letter-spacing: 0.02em; }
.brand-name span { font-size: 0.72rem; color: var(--color-ink-soft); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  margin: 4px 0;
}

.main-nav ul {
  display: flex;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.main-nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-accent-dark);
  border-bottom-color: var(--color-accent);
}
.header-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 9px 16px;
  border-radius: 999px;
  font-weight: 600;
}
.header-cta:hover { background: var(--color-accent-dark); }

/* ---------- Compliance banner ---------- */
.compliance-banner {
  background: var(--color-primary-dark);
  color: #eef2f7;
  font-size: 0.85rem;
}
.compliance-banner .container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
}
.compliance-banner strong { color: #fff; }
.compliance-banner .quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-left: auto;
}
.compliance-banner a { color: #cfe8f5; text-decoration: none; }
.compliance-banner a:hover { text-decoration: underline; }
.compliance-banner .report-link { color: #ffd9a0; font-weight: 700; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 64px 0 72px;
}
.hero .container { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero h1 { color: #fff; }
.hero p.lead { color: #dbe6f2; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.hero-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  padding: 22px;
}
.hero-card ul { margin: 0; padding-left: 20px; color: #eaf1f8; }
.hero-card li { margin-bottom: 8px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 0.98rem;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { border-color: #fff; }
.btn-dark { background: var(--color-primary); color: #fff; }
.btn-dark:hover { background: var(--color-primary-dark); }
.btn-report {
  background: var(--color-danger);
  color: #fff;
}
.btn-report:hover { background: #8f1f19; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }

/* ---------- Sections ---------- */
section { padding: 56px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-head { max-width: 720px; margin: 0 auto 36px; text-align: center; }
.section-head.left { margin: 0 0 32px; text-align: left; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  height: 100%;
}
.card .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-gray-soft);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 1.4rem;
}
.card ul { padding-left: 20px; margin: 0.6em 0 0; }
.card li { margin-bottom: 6px; }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.value-card {
  border-left: 4px solid var(--color-accent);
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 20px;
}
.value-card h3 { margin-bottom: 6px; font-size: 1.05rem; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--color-border); font-size: 0.95rem; }
thead th { background: var(--color-primary); color: #fff; }
tbody tr:nth-child(even) { background: var(--color-bg-alt); }

/* ---------- Update date pill ---------- */
.updated-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-ink-soft);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  margin-bottom: 18px;
}
.updated-pill strong { color: var(--color-primary); }
.hero .updated-pill { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.25); color: #eaf1f8; }
.hero .updated-pill strong { color: #fff; }

/* ---------- Speed test ---------- */
.speedtest-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.speedtest-gauge { text-align: center; margin-bottom: 24px; }
.speedtest-status { font-weight: 600; color: var(--color-ink-soft); min-height: 1.4em; }
.speedtest-progress {
  height: 10px;
  background: var(--color-gray-soft);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 14px;
}
.speedtest-progress > span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  transition: width 0.3s ease;
}
.result-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 26px; }
.result-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.result-card .value { font-size: 1.8rem; font-weight: 800; color: var(--color-primary); word-break: break-word; }
.result-card .unit { font-size: 0.85rem; color: var(--color-ink-soft); }
.result-card .label { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-ink-soft); margin-bottom: 6px; }
.speedtest-error {
  display: none;
  margin-top: 18px;
  background: #fdecea;
  border: 1px solid #f3c1bd;
  color: #7a231d;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
}
.speedtest-error.visible { display: block; }
.speedtest-meta { margin-top: 18px; font-size: 0.85rem; color: var(--color-ink-soft); }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
label { font-weight: 600; font-size: 0.92rem; }
input, select, textarea {
  font: inherit;
  padding: 11px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-ink);
}
textarea { resize: vertical; min-height: 120px; }
.field-error { color: var(--color-danger); font-size: 0.82rem; min-height: 1.1em; }
.form-note { font-size: 0.85rem; color: var(--color-ink-soft); }
.form-success {
  display: none;
  background: #eaf7ee;
  border: 1px solid #b9e3c6;
  color: #1a5c37;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-top: 16px;
}
.form-success.visible { display: block; }

/* ---------- Contact / info blocks ---------- */
.info-block { display: flex; gap: 14px; margin-bottom: 18px; }
.info-block .icon {
  flex: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-gray-soft);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.callout {
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-accent);
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 22px 24px;
  margin: 22px 0;
}
.callout.warn { border-left-color: var(--color-warn); }
.callout h3 { margin-bottom: 8px; }

.report-box {
  background: var(--color-primary-dark);
  color: #fff;
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
}
.report-box p { color: #dbe6f2; }

.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}
.anchor-nav a {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 16px;
  text-decoration: none;
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
}
.anchor-nav a:hover { background: var(--color-bg-alt); }

.status-ok {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #eaf7ee;
  color: #1a5c37;
  border: 1px solid #b9e3c6;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.interruption-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 14px;
}
.interruption-item h3 { margin-bottom: 6px; }
.interruption-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.88rem; color: var(--color-ink-soft); margin-bottom: 8px; }

.norm-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.norm-list li {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
}
.norm-list strong { color: var(--color-primary); display: block; margin-bottom: 4px; }

/* ---------- Entes regulatorios ---------- */
.ente-logo {
  height: 44px;
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}
.ente-logo img { height: 100%; width: auto; max-width: 160px; object-fit: contain; }
.ente-logo-dark {
  display: inline-flex;
  background: var(--color-primary-dark);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
}

/* ---------- Mapa de cobertura ---------- */
.map-embed {
  position: relative;
  width: 100%;
  padding-top: 56%;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 10px;
}
.map-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: #d8dadc;
  padding: 48px 0 20px;
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
  gap: 32px;
  margin-bottom: 30px;
}
.site-footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: 14px; }
.site-footer a { color: #c9ccd0; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-brand img { height: 38px; margin-bottom: 12px; }
.footer-brand p { color: #b7bbc0; margin-bottom: 4px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-report {
  background: var(--color-danger);
  color: #fff !important;
  display: inline-block;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  margin-top: 6px;
}
.footer-bottom {
  border-top: 1px solid #2a2b2c;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: #9a9ea3;
  font-size: 0.82rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; }
  .grid-3, .value-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .result-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 12px 20px 20px;
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { display: block; padding: 10px 4px; }
  .compliance-banner .quick-links { margin-left: 0; }
  .grid-3, .grid-2, .value-grid, .footer-grid, .form-grid, .result-grid { grid-template-columns: 1fr; }
  section { padding: 40px 0; }
}