/* ==========================================================================
   ACUEDUCTOS PERÚ - MAIN STYLESHEET
   Soluciones Integrales para el Tratamiento y Manejo del Agua
   ========================================================================== */

:root {
  /* Brand Colors */
  --primary: #0a2540;          /* Deep Navy Blue */
  --primary-light: #153e6b;    /* Navy Accent */
  --primary-dark: #061727;     /* Dark Charcoal Navy */
  --secondary: #0077b6;        /* Ocean Blue */
  --secondary-light: #0096c7;  /* Bright Blue */
  --accent: #00b4d8;           /* Cyan/Aqua Water */
  --accent-light: #90e0ef;     /* Ice Blue */
  --accent-glow: rgba(0, 180, 216, 0.25);

  /* Status Colors */
  --whatsapp: #25D366;         /* WhatsApp Green */
  --whatsapp-hover: #1ebd56;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* Neutral Colors */
  --bg-main: #f8fafc;
  --bg-white: #ffffff;
  --bg-dark: #0a192f;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  /* Text Colors */
  --text-primary: #0f172a;     /* Slate 900 */
  --text-secondary: #475569;   /* Slate 600 */
  --text-muted: #64748b;       /* Slate 500 */
  --text-light: #f8fafc;       /* Off-white */
  --text-accent: #0096c7;

  /* Typography */
  --font-heading: 'Outfit', 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Elevation / Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(0, 180, 216, 0.35);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--secondary-light);
}

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-wide {
  width: 100%;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Section Spacing */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-dark {
  background-color: var(--primary);
  color: var(--text-light);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #ffffff;
}

.section-dark p {
  color: #cbd5e1;
}

.section-alt {
  background-color: #f1f5f9;
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background-color: rgba(0, 180, 216, 0.12);
  color: var(--secondary);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}

.section-dark .section-tag {
  background-color: rgba(0, 180, 216, 0.2);
  color: var(--accent-light);
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
}

.section-dark .section-subtitle {
  color: #94a3b8;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.text-accent { color: var(--accent); }
.text-secondary { color: var(--secondary); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* Grid Systems */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Pulse animation for CTA & Live indicators */
@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

@keyframes waterFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float-anim {
  animation: waterFloat 4s ease-in-out infinite;
}