/* =============================================
   AguaBogotá — CRISTANCHO VEGA MONICA ASTRID
   style.css
   ============================================= */

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

:root {
  --blue-deep:   #0d4f8b;
  --blue:        #1a6fa8;
  --blue-light:  #3b9fd1;
  --teal:        #1d8a72;
  --sky:         #e8f4fd;
  --sky-dark:    #c9e6f7;
  --white:       #ffffff;
  --bg-light:    #f0f8ff;
  --text:        #1a2332;
  --text-mid:    #3d5166;
  --text-soft:   #6b8099;
  --accent:      #f0a500;
  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 4px 24px rgba(13,79,139,0.10);
  --shadow-lg:   0 8px 40px rgba(13,79,139,0.16);
  --transition:  0.25s ease;
  --max-w:       1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- UTILITY ---- */
.tag {
  display: inline-block;
  background: var(--sky-dark);
  color: var(--blue-deep);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.tag-light {
  background: rgba(255,255,255,0.20);
  color: #fff;
}

.section {
  padding: 80px 0;
}
.bg-light { background: var(--bg-light); }

.section-header {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 52px;
}
.section-header h2 {
  font-family: 'Merriweather', serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--blue-deep);
  margin-bottom: 12px;
}
.section-desc {
  color: var(--text-mid);
  font-size: 1.05rem;
}
.section-header.light h2 { color: #fff; }
.section-header.light .section-desc { color: rgba(255,255,255,0.85); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-deep); transform: translateY(-2px); }
.btn-outline {
  border: 2px solid rgba(255,255,255,0.7);
  color: #fff;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); }

.link-arrow {
  display: inline-block;
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
  margin-top: 16px;
  transition: var(--transition);
}
.link-arrow:hover { color: var(--blue-deep); letter-spacing: 0.02em; }

/* ---- HEADER ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--sky-dark);
  box-shadow: 0 2px 12px rgba(13,79,139,0.07);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.logo-icon { font-size: 1.8rem; }
.logo-name {
  display: block;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--blue-deep);
  line-height: 1;
}
.logo-sub {
  display: block;
  font-size: 0.68rem;
  color: var(--text-soft);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.main-nav {
  display: flex;
  gap: 8px;
}
.main-nav a {
  text-decoration: none;
  color: var(--text-mid);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
}
.main-nav a:hover {
  background: var(--sky);
  color: var(--blue-deep);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--blue-deep);
  cursor: pointer;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 50%, var(--blue-light) 100%);
  padding: 120px 0 160px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(59,159,209,0.3) 0%, transparent 60%),
    radial-gradient(circle at 10% 80%, rgba(29,138,114,0.25) 0%, transparent 50%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  margin-bottom: 16px;
}
.hero-title {
  font-family: 'Merriweather', serif;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  color: #fff;
  line-height: 1.2;
  margin-bottom: 22px;
}
.hero-title .accent { color: #7ce3f8; }
.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.88);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
}
.hero-wave svg { display: block; width: 100%; }

/* ---- STATS BAR ---- */
.stats-bar {
  background: var(--white);
  padding: 0 0 60px;
  margin-top: -2px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: linear-gradient(135deg, var(--sky) 0%, #ddeeff 100%);
  border: 1px solid var(--sky-dark);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--blue-deep);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--text-mid);
  font-weight: 500;
}

/* ---- INTRO ---- */
.intro-section {}
.col-text h2 {
  font-family: 'Merriweather', serif;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--blue-deep);
  margin-bottom: 18px;
}
.col-text p { color: var(--text-mid); margin-bottom: 14px; }
.col-visual { display: flex; flex-direction: column; gap: 20px; }
.info-card {
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.info-card.blue { background: linear-gradient(135deg, #e3f1fc, #c6e4f8); border-left: 4px solid var(--blue); }
.info-card.teal { background: linear-gradient(135deg, #e0f5ef, #c1eae0); border-left: 4px solid var(--teal); }
.info-icon { font-size: 1.8rem; margin-bottom: 10px; }
.info-card h3 { font-size: 1rem; font-weight: 700; color: var(--blue-deep); margin-bottom: 6px; }
.info-card p { font-size: 0.88rem; color: var(--text-mid); }

/* ---- CICLO ---- */
.cycle-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
}
.cycle-step {
  flex: 1;
  min-width: 150px;
  max-width: 200px;
  text-align: center;
  padding: 24px 16px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}
.step-icon { font-size: 2.2rem; margin-bottom: 8px; }
.step-num {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.cycle-step h3 { font-size: 0.9rem; font-weight: 700; color: var(--blue-deep); margin-bottom: 8px; }
.cycle-step p { font-size: 0.8rem; color: var(--text-mid); }
.cycle-arrow {
  align-self: center;
  font-size: 1.4rem;
  color: var(--blue-light);
  padding: 0 8px;
  flex-shrink: 0;
}

/* ---- TIPS ---- */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tip-card {
  background: var(--white);
  border: 1px solid var(--sky-dark);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.tip-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.tip-icon { font-size: 2rem; margin-bottom: 12px; }
.tip-card h3 { font-size: 0.95rem; font-weight: 700; color: var(--blue-deep); margin-bottom: 8px; }
.tip-card p { font-size: 0.83rem; color: var(--text-mid); }

/* ---- CALIDAD ---- */
.quality-layout { align-items: start; }
.quality-text p { color: var(--text-mid); margin-bottom: 16px; }
.quality-list { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 18px; }
.quality-list li { display: flex; align-items: flex-start; gap: 14px; }
.quality-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 4px;
}
.quality-dot.blue  { background: var(--blue); }
.quality-dot.teal  { background: var(--teal); }
.quality-dot.sky   { background: var(--blue-light); }
.quality-dot.navy  { background: var(--blue-deep); }
.quality-list strong { font-size: 0.95rem; color: var(--text); display: block; }
.quality-list p { font-size: 0.84rem; color: var(--text-mid); margin: 2px 0 0; }
.quality-note {
  font-size: 0.84rem;
  background: #fff8e1;
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  color: var(--text-mid);
}
.gauge-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.gauge-title { font-weight: 700; font-size: 0.88rem; color: var(--blue-deep); margin-bottom: 14px; }
.gauge-bar-wrap { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.gauge-bar {
  flex: 1;
  height: 12px;
  background: var(--sky-dark);
  border-radius: 6px;
  overflow: hidden;
}
.gauge-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--blue-light));
  border-radius: 6px;
  transition: width 1.2s ease;
}
.gauge-val { font-size: 0.82rem; font-weight: 700; color: var(--teal); white-space: nowrap; }
.gauge-note { font-size: 0.82rem; color: var(--text-mid); }
.alert-card {
  background: #fff8e1;
  border: 1px solid #ffe082;
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.alert-icon { font-size: 1.4rem; flex-shrink: 0; }
.alert-card strong { display: block; font-size: 0.9rem; color: #7a5500; margin-bottom: 4px; }
.alert-card p { font-size: 0.82rem; color: #6b4a00; }

/* ---- PÁRAMOS ---- */
.paramos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 28px;
}
.paramo-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--accent, var(--blue));
  transition: var(--transition);
}
.paramo-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.paramo-header { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.paramo-icon { font-size: 1.8rem; }
.paramo-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--blue-deep); }
.paramo-card p { font-size: 0.88rem; color: var(--text-mid); margin-bottom: 14px; }
.paramo-tag {
  display: inline-block;
  background: var(--sky);
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}
.paramo-warning {
  background: #fff3f3;
  border: 1px solid #ffcdd2;
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.9rem;
}
.paramo-warning span { font-size: 1.3rem; flex-shrink: 0; }
.paramo-warning p { color: var(--text-mid); }

/* ---- RIVERS TABLE ---- */
.rivers-table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); }
.rivers-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}
.rivers-table thead {
  background: linear-gradient(135deg, var(--blue-deep), var(--blue));
  color: #fff;
}
.rivers-table th {
  padding: 14px 18px;
  text-align: left;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.rivers-table td {
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-mid);
  border-bottom: 1px solid var(--sky-dark);
}
.rivers-table tr:last-child td { border-bottom: none; }
.rivers-table tr:hover td { background: var(--sky); }
.status {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.status.verde  { background: #e0f5ef; color: var(--teal); }
.status.amarillo { background: #fff8e1; color: #b07a00; }
.status.rojo   { background: #fff3f3; color: #c0392b; }

/* ---- DATOS CURIOSOS ---- */
.curiosos-section {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 60%, var(--blue-light) 100%);
}
.curiosos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.curioso-card {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.20);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  transition: var(--transition);
}
.curioso-card:hover { background: rgba(255,255,255,0.18); transform: translateY(-4px); }
.curioso-num {
  display: block;
  font-size: 2.4rem;
  font-weight: 800;
  color: #7ce3f8;
  margin-bottom: 12px;
  line-height: 1;
}
.curioso-card p { font-size: 0.85rem; color: rgba(255,255,255,0.88); }

/* ---- ACERCA ---- */
.about-section { max-width: 860px; margin: 0 auto; }
.about-card {
  display: flex;
  gap: 36px;
  align-items: flex-start;
  background: linear-gradient(135deg, var(--sky) 0%, #ddeeff 100%);
  border: 1px solid var(--sky-dark);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}
.about-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-light));
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 20px rgba(13,79,139,0.30);
}
.about-text h2 {
  font-family: 'Merriweather', serif;
  font-size: 1.6rem;
  color: var(--blue-deep);
  margin-bottom: 14px;
}
.about-text p { color: var(--text-mid); margin-bottom: 12px; font-size: 0.95rem; }
.about-meta {
  font-size: 0.82rem !important;
  color: var(--text-soft) !important;
  background: rgba(255,255,255,0.6);
  padding: 8px 14px;
  border-radius: 8px;
  margin-top: 18px !important;
}

/* ---- FOOTER ---- */
.site-footer {
  background: var(--blue-deep);
  color: rgba(255,255,255,0.85);
  padding: 48px 0 32px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-name {
  display: block;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
}
.footer-sub {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
}
.footer-links {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  color: rgba(255,255,255,0.70);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: var(--transition);
}
.footer-links a:hover { color: #fff; background: rgba(255,255,255,0.10); }
.footer-copy p { font-size: 0.82rem; color: rgba(255,255,255,0.50); line-height: 1.7; }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .stats-grid       { grid-template-columns: repeat(2, 1fr); }
  .tips-grid        { grid-template-columns: repeat(2, 1fr); }
  .curiosos-grid    { grid-template-columns: repeat(2, 1fr); }
  .paramos-grid     { grid-template-columns: 1fr 1fr; }
  .cycle-steps      { gap: 8px; }
  .cycle-arrow      { display: none; }
}

@media (max-width: 768px) {
  .main-nav         { display: none; }
  .nav-toggle       { display: block; }
  .main-nav.open    { display: flex; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; background: #fff; padding: 16px 24px; border-bottom: 1px solid var(--sky-dark); box-shadow: var(--shadow-lg); z-index: 99; }
  .two-col          { grid-template-columns: 1fr; }
  .quality-layout   { grid-template-columns: 1fr; }
  .paramos-grid     { grid-template-columns: 1fr; }
  .curiosos-grid    { grid-template-columns: 1fr 1fr; }
  .about-card       { flex-direction: column; align-items: center; text-align: center; padding: 28px 20px; }
  .hero             { padding: 80px 0 120px; }
  .hero-cta         { flex-direction: column; align-items: flex-start; }
  .stats-grid       { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .tips-grid        { grid-template-columns: 1fr; }
  .stats-grid       { grid-template-columns: 1fr; }
  .curiosos-grid    { grid-template-columns: 1fr; }
  .cycle-steps      { flex-direction: column; align-items: center; }
  .cycle-step       { max-width: 100%; width: 100%; }
}