/* Brasil Água+ (by WaterDroppi) Refined Design System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Official Brand Colors extracted from Logo */
  --ba-navy: #0B2A6B;
  --ba-navy-dark: #051438;
  --ba-green: #0F783B;
  --ba-green-light: #16A34A;
  --ba-yellow: #F5B813;
  --ba-yellow-hover: #E0A406;
  --ba-water-blue: #1B75BC;
  --ba-water-cyan: #38A5DC;
  
  --ba-bg-light: #F8FAFC;
  --ba-card-bg: #FFFFFF;
  --ba-text-dark: #0F172A;
  --ba-text-muted: #64748B;
  --ba-border-color: #E2E8F0;
  
  --ba-radius-sm: 10px;
  --ba-radius-md: 16px;
  --ba-radius-lg: 24px;
  --ba-shadow-sm: 0 4px 12px rgba(11, 42, 107, 0.05);
  --ba-shadow-md: 0 10px 30px rgba(11, 42, 107, 0.08);
  --ba-shadow-lg: 0 20px 45px rgba(11, 42, 107, 0.15);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ba-text-dark);
  background-color: var(--ba-bg-light);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  letter-spacing: -0.025em;
}

.text-navy { color: var(--ba-navy) !important; }
.text-green { color: var(--ba-green) !important; }
.text-yellow { color: var(--ba-yellow) !important; }
.text-water { color: var(--ba-water-cyan) !important; }

.bg-navy { background-color: var(--ba-navy) !important; }
.bg-navy-dark { background-color: var(--ba-navy-dark) !important; }
.bg-green { background-color: var(--ba-green) !important; }
.bg-yellow { background-color: var(--ba-yellow) !important; }

.gradient-text-brand {
  background: linear-gradient(135deg, #38A5DC 0%, #0F783B 50%, #F5B813 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-hero-bg {
  background: radial-gradient(circle at 80% 20%, #1B75BC 0%, #0B2A6B 45%, #051438 100%);
}

/* Header & Navbar */
.navbar-ba {
  background: rgba(5, 20, 56, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.navbar-brand-logo {
  height: 48px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.2));
  background: #FFFFFF;
  padding: 4px 12px;
  border-radius: 10px;
}

.navbar-ba .nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  font-size: 0.92rem;
  margin: 0 0.4rem;
  transition: all 0.2s ease;
}

.navbar-ba .nav-link:hover,
.navbar-ba .nav-link.active {
  color: var(--ba-yellow);
}

.brand-presentation-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(15, 120, 59, 0.2);
  border: 1px solid rgba(15, 120, 59, 0.4);
  color: #4ADE80;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 20px;
}

/* Refined Buttons */
.btn-brand-yellow {
  background-color: var(--ba-yellow);
  color: var(--ba-navy-dark);
  font-weight: 800;
  border-radius: 40px;
  padding: 12px 28px;
  border: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(245, 184, 19, 0.35);
}

.btn-brand-yellow:hover {
  background-color: #ffd043;
  color: var(--ba-navy-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(245, 184, 19, 0.5);
}

.btn-brand-green {
  background-color: var(--ba-green);
  color: #FFFFFF;
  font-weight: 700;
  border-radius: 40px;
  padding: 12px 28px;
  border: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(15, 120, 59, 0.3);
}

.btn-brand-green:hover {
  background-color: #128e46;
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(15, 120, 59, 0.4);
}

.btn-brand-outline {
  border: 2px solid rgba(255, 255, 255, 0.35);
  color: #FFFFFF;
  font-weight: 600;
  border-radius: 40px;
  padding: 10px 24px;
  background: transparent;
  transition: all 0.3s ease;
}

.btn-brand-outline:hover {
  border-color: var(--ba-yellow);
  color: var(--ba-yellow);
  background: rgba(245, 184, 19, 0.1);
}

/* Hero Section */
.hero-section-refined {
  padding: 140px 0 100px 0;
  position: relative;
  overflow: hidden;
  color: #FFFFFF;
}

.hero-watermark {
  position: absolute;
  right: -5%;
  top: 10%;
  width: 550px;
  height: auto;
  opacity: 0.06;
  pointer-events: none;
  filter: drop-shadow(0 0 40px rgba(56, 165, 220, 0.5));
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(12px);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.5rem;
}

/* Cards & Glassmorphism */
.card-refined {
  background: var(--ba-card-bg);
  border: 1px solid var(--ba-border-color);
  border-radius: var(--ba-radius-md);
  padding: 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--ba-shadow-sm);
  height: 100%;
}

.card-refined:hover {
  transform: translateY(-6px);
  box-shadow: var(--ba-shadow-lg);
  border-color: rgba(27, 117, 188, 0.3);
}

.glass-card-refined {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--ba-radius-lg);
  padding: 2.2rem;
  color: #FFFFFF;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

/* Metric / Counter Cards */
.metric-box-refined {
  text-align: center;
  padding: 1.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--ba-radius-sm);
  backdrop-filter: blur(8px);
}

.metric-number-refined {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--ba-yellow);
  line-height: 1;
}

.metric-label-refined {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.75);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-top: 6px;
}

/* Pillar Icons */
.pillar-icon-refined {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: rgba(27, 117, 188, 0.1);
  color: var(--ba-water-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(27, 117, 188, 0.2);
}

/* Tabs & Calculators */
.nav-pills-refined .nav-link {
  background: #FFFFFF;
  color: var(--ba-navy);
  border: 2px solid var(--ba-border-color);
  font-weight: 700;
  border-radius: 30px;
  padding: 10px 24px;
  transition: all 0.3s ease;
}

.nav-pills-refined .nav-link.active {
  background: var(--ba-navy);
  color: #FFFFFF;
  border-color: var(--ba-navy);
  box-shadow: 0 6px 20px rgba(11, 42, 107, 0.25);
}

.calc-card-refined {
  background: #FFFFFF;
  border-radius: var(--ba-radius-lg);
  border: 1px solid var(--ba-border-color);
  padding: 2.5rem;
  box-shadow: var(--ba-shadow-md);
}

.result-badge-refined {
  background: linear-gradient(135deg, #ECFDF5 0%, #F0FDF4 100%);
  border: 1px solid #A7F3D0;
  color: #065F46;
  border-radius: 16px;
  padding: 1.5rem;
}

/* Form Wizard (6 Phases) */
.step-node {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--ba-text-muted);
  position: relative;
  z-index: 2;
  transition: all 0.3s ease;
}

.step-node.active {
  border-color: var(--ba-navy);
  background: var(--ba-navy);
  color: var(--ba-yellow);
  box-shadow: 0 0 0 5px rgba(11, 42, 107, 0.15);
}

.step-node.completed {
  border-color: var(--ba-green);
  background: var(--ba-green);
  color: #FFFFFF;
}

.step-label {
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: 8px;
  text-align: center;
  color: var(--ba-text-dark);
}

/* Footer Refined */
footer {
  background: var(--ba-navy-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 70px 0 35px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer h5 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 1.3rem;
  font-weight: 700;
}

footer a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover {
  color: var(--ba-yellow);
}