/* My Water Daily — static landing page
   Lightweight replacement for the old Bootstrap + Material Kit stack. */

:root {
  --brand: #00acc1;
  --brand-dark: #00838f;
  --ink: #3c4858;
  --ink-light: #6c7a89;
  --card-radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Roboto", "Helvetica Neue", Arial, sans-serif;
  font-weight: 300;
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-dark);
  text-decoration: none;
}

a:hover {
  color: var(--brand);
}

/* Navbar */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.5rem;
  background: rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(2px);
}

.navbar-brand {
  color: #fff;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.navbar-brand strong {
  font-weight: 700;
}

.navbar-nav {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.navbar-nav a {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 400;
}

.navbar-nav a:hover {
  color: rgba(255, 255, 255, 0.75);
}

/* Header / hero */

.header {
  position: relative;
  padding: 9rem 0 12rem;
  background-image: linear-gradient(rgba(0, 20, 30, 0.55), rgba(0, 20, 30, 0.55)), url("../img/landing_water_01.jpg");
  background-size: cover;
  background-position: center;
}

.header .container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.header .title {
  color: #fff;
  font-size: 2.6rem;
  font-weight: 500;
  margin: 0 0 1.2rem;
}

.header h3 {
  color: #fff;
  font-weight: 300;
  font-size: 1.15rem;
  line-height: 1.6;
  margin: 0 0 1rem;
  max-width: 640px;
}

/* Main content card */

.main-raised {
  max-width: 900px;
  margin: -8rem auto 3rem;
  padding: 3rem 2.5rem;
  background: #fff;
  border-radius: var(--card-radius);
  box-shadow: 0 16px 38px -12px rgba(0, 0, 0, 0.28), 0 4px 25px 0 rgba(0, 0, 0, 0.12);
  position: relative;
}

.main-raised h2 {
  text-align: center;
  font-weight: 500;
  font-size: 1.6rem;
  margin: 2.5rem 0 1rem;
}

.main-raised h2:first-child {
  margin-top: 0;
}

.main-raised h4 {
  font-weight: 300;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink-light);
  margin: 0 0 1.5rem;
}

/* Footer */

.footer {
  padding: 1.5rem;
  text-align: center;
  color: var(--ink-light);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .header {
    padding: 7rem 0 9rem;
  }

  .header .title {
    font-size: 2rem;
  }

  .main-raised {
    margin: -6rem 1rem 2rem;
    padding: 2rem 1.5rem;
  }
}