/* ============================================
   GASFITERYA - Main Stylesheet
   Modern, conversion-focused, SEO-ready
   ============================================ */

:root {
  --primary: #0b3d91;
  --primary-dark: #072963;
  --primary-light: #1a5fd1;
  --accent: #00a86b;
  --accent-dark: #00784d;
  --alert: #e53935;
  --alert-dark: #c62828;
  --bg: #f4f7fb;
  --bg-warm: #f8fafc;
  --ink: #0f172a;
  --ink-light: #1b2230;
  --muted: #586175;
  --muted-light: #8895aa;
  --card: #ffffff;
  --border: #dbe3ef;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(11,61,145,0.08), 0 2px 4px -1px rgba(11,61,145,0.04);
  --shadow-lg: 0 10px 25px -5px rgba(11,61,145,0.12), 0 8px 10px -6px rgba(11,61,145,0.08);
  --shadow-xl: 0 20px 40px -10px rgba(11,61,145,0.18);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-light); }

/* Typography */
h1, h2, h3, h4 {
  font-family: 'Montserrat', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.4rem); }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; color: var(--muted); }

.text-center { text-align: center; }
.text-white { color: #fff; }
.text-muted { color: var(--muted); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -0.75rem;
}

.col, .col-6, .col-md-4, .col-md-6, .col-lg-3, .col-lg-4, .col-lg-6, .col-lg-8 {
  padding: 0 0.75rem;
  flex: 1 0 100%;
}

.col-6 { flex: 0 0 50%; max-width: 50%; }

@media (min-width: 768px) {
  .col-md-4 { flex: 0 0 33.333%; max-width: 33.333%; }
  .col-md-6 { flex: 0 0 50%; max-width: 50%; }
}

@media (min-width: 992px) {
  .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
  .col-lg-4 { flex: 0 0 33.333%; max-width: 33.333%; }
  .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
  .col-lg-8 { flex: 0 0 66.667%; max-width: 66.667%; }
}

.g-3 { gap: 1rem 0; }
.g-4 { gap: 1.5rem 0; }

/* ============================================
   TOP EMERGENCY BAR
   ============================================ */
.top-emergency {
  background: linear-gradient(90deg, var(--alert), #ff5252);
  color: #fff;
  font-size: 0.92rem;
  padding: 0.6rem 0;
  text-align: center;
  position: relative;
  z-index: 1100;
}
.top-emergency a {
  color: #fff;
  font-weight: 800;
  text-decoration: underline;
  font-size: 1rem;
}
.top-emergency a:hover { color: #ffe0e0; }

/* ============================================
   NAVIGATION
   ============================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1040;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}
.brand-logo {
  height: 46px;
  width: auto;
}
.nav-links {
  display: none;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.92rem;
  font-weight: 600;
}
.nav-links a {
  color: var(--ink-light);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

@media (min-width: 768px) {
  .nav-links { display: flex; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 8px 20px rgba(11,61,145,0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  box-shadow: 0 12px 28px rgba(11,61,145,0.32);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent), #00c47a);
  color: #fff;
  box-shadow: 0 8px 20px rgba(0,168,107,0.25);
}
.btn-success:hover {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  box-shadow: 0 12px 28px rgba(0,168,107,0.32);
}

.btn-danger {
  background: linear-gradient(135deg, var(--alert), #ff5252);
  color: #fff;
  box-shadow: 0 8px 20px rgba(229,57,53,0.25);
}
.btn-danger:hover {
  background: linear-gradient(135deg, var(--alert-dark), var(--alert));
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

.btn-block { width: 100%; }

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 3rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(11,61,145,0.12), transparent),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0,168,107,0.10), transparent),
    linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}

.hero-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, #fff 60%, #f0f6ff);
  box-shadow: var(--shadow-xl);
  padding: 2rem;
}

@media (min-width: 768px) {
  .hero-card { padding: 3rem; }
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  color: var(--alert);
  letter-spacing: 0.1em;
  font-weight: 800;
  font-size: 0.72rem;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.8rem;
  background: rgba(229,57,53,0.08);
  border-radius: 999px;
}

.hero-title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  line-height: 1.08;
  margin-bottom: 1rem;
}

.hero-copy {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.hero-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--alert), #ff5252);
  color: #fff;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 8px 20px rgba(229,57,53,0.25);
  margin-bottom: 0.75rem;
}
.hero-phone:hover { color: #fff; background: linear-gradient(135deg, var(--alert-dark), var(--alert)); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

/* KPI / Trust Badges */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.kpi {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  padding: 1rem 0.6rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}
.kpi:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.kpi strong {
  display: block;
  font-size: 1.3rem;
  color: var(--primary-dark);
  font-weight: 800;
  margin-bottom: 0.2rem;
}
.kpi span {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
}

.badge-comuna {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  background: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--ink-light);
  display: inline-block;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: 3.5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, #fff, var(--bg-warm));
}

.section-dark {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
}
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.85); }

.section-header {
  max-width: 640px;
  margin: 0 auto 2.5rem;
  text-align: center;
}
.section-header h2 { margin-bottom: 0.5rem; }

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-card {
  composes: card;
}

.service-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}

.service-price {
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.05rem;
}

.service-meta {
  color: var(--muted-light);
  font-size: 0.85rem;
}

.service-desc {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0.75rem 0 1rem;
}

/* Zone / Comuna Cards */
.zone-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  height: 100%;
  transition: all 0.25s ease;
}
.zone-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.zone-card h3 { margin-bottom: 0.5rem; }
.zone-card h3 a { color: var(--ink); }
.zone-card h3 a:hover { color: var(--primary); }

/* Feature Cards */
.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
}
.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

/* ============================================
   ACCORDION / FAQ
   ============================================ */
.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
  background: #fff;
}
.accordion-header {
  padding: 0;
  margin: 0;
}
.accordion-button {
  width: 100%;
  padding: 1.1rem 1.25rem;
  background: #fff;
  border: none;
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.accordion-button::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--primary);
  font-weight: 300;
  flex-shrink: 0;
}
.accordion-button.active::after { content: '−'; }
.accordion-button.active {
  background: linear-gradient(90deg, #edf3ff, #f5f9ff);
  color: var(--primary-dark);
}
.accordion-body {
  padding: 0 1.25rem 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  display: none;
}
.accordion-item.open .accordion-body { display: block; }

/* ============================================
   STICKY CONTACT BAR
   ============================================ */
.sticky-contact {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1080;
  background: #fff;
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  padding: 0.6rem 1rem;
}
.sticky-contact .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  max-width: 600px;
}
.sticky-contact .btn {
  padding: 0.7rem 0.5rem;
  font-size: 0.9rem;
}

/* Push footer up so it doesn't hide behind sticky bar */
body { padding-bottom: 72px; }

/* ============================================
   CTA BLOCK
   ============================================ */
.cta-block {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, var(--primary-light));
  color: #fff;
  padding: 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.08), transparent 70%);
}
.cta-block h2 { color: #fff; margin-bottom: 0.5rem; }
.cta-block p { color: rgba(255,255,255,0.9); margin-bottom: 1.25rem; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: linear-gradient(180deg, #0a1221, #070d18);
  color: #a0aec0;
  padding: 3rem 0 1.5rem;
}
.footer h3 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.footer a { color: #cbd5e1; }
.footer a:hover { color: #fff; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 0.4rem; font-size: 0.92rem; }
.footer hr {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin: 2rem 0 1rem;
}
.footer-logo {
  height: 40px;
  width: auto;
  margin-bottom: 0.75rem;
  opacity: 0.9;
}

/* ============================================
   COMUNA PAGE SPECIFIC
   ============================================ */
.comuna-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 3rem 0;
}
.comuna-hero h1 { color: #fff; margin-bottom: 0.75rem; }
.comuna-hero p { color: rgba(255,255,255,0.9); font-size: 1.1rem; }

.barrio-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}
.barrio-list li {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.88rem;
  color: var(--ink-light);
}

/* ============================================
   TERMORAFIA PAGE
   ============================================ */
.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, #ff6b35, #f7931e);
  color: #fff;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.pulse {
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(229,57,53,0.4); }
  50% { box-shadow: 0 0 0 10px rgba(229,57,53,0); }
}

/* ============================================
   UTILITIES
   ============================================ */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-4 { padding-top: 2rem; padding-bottom: 2rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }

.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }

.w-100 { width: 100%; }

/* Mobile adjustments */
@media (max-width: 575px) {
  .hero { padding-top: 1.5rem; }
  .hero-card { padding: 1.5rem; }
  .cta-row { flex-direction: column; }
  .cta-row .btn { width: 100%; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 2.5rem 0; }
  .cta-block { padding: 1.75rem; }
  .top-emergency { font-size: 0.82rem; }
  .top-emergency a { font-size: 0.9rem; }
}