/* General Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

/* Colors */
:root {
  --primary-color: #004080;   /* Deep Blue */
  --secondary-color: #ffffff; /* White */
  --accent-color: #1e90ff;    /* Bright Blue for highlights */
  --dark-color: #2b2b2b;
  --text-color: #333;
}

/* Body */
body {
  background: var(--secondary-color);
  color: var(--text-color);
  line-height: 1.6;
  font-size: 16px;
}

/* ================= Navbar ================= */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--primary-color);
  padding: 0.8rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-logo img {
  height: 40px;
  margin-right: 10px;
  vertical-align: middle;
}

.nav-logo span {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.nav-items {
  display: flex;
  list-style: none;
}

.nav-items li {
  margin: 0 15px;
}

.nav-items li a {
  text-decoration: none;
  color: var(--secondary-color);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.nav-items li a:hover,
.nav-items li a.active-item {
  background: var(--secondary-color);
  color: var(--primary-color);
}

/* ================= Hero Section ================= */
.main-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4rem 2rem;
  background: linear-gradient(rgba(0,64,128,0.85), rgba(0,64,128,0.85)),
              url('https://images.unsplash.com/photo-1606925797309-8a3b40a76a3e?auto=format&fit=crop&w=1600&q=80') 
              no-repeat center center/cover;
  color: var(--secondary-color);
}

.main-section-text h3 {
  font-size: 2.2rem;
  font-weight: 700;
}

.main-section-text span {
  color: var(--accent-color);
}

.main-section-mockup img {
  width: 420px;
  border-radius: 10px;
  background: white;
  padding: 5px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
}

/* ================= Sections ================= */
.section {
  padding: 4rem 2rem;
  text-align: center;
  background: var(--secondary-color);
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.section p, 
.section ul {
  max-width: 800px;
  margin: 0 auto;
  color: var(--dark-color);
}

.section ul li {
  margin: 0.5rem 0;
}

/* ================= Features ================= */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature {
  background: var(--secondary-color);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.08);
  transition: transform 0.3s;
}

.feature:hover {
  transform: translateY(-5px);
}

.feature h3 {
  color: var(--accent-color);
  margin-bottom: 0.8rem;
}

/* ================= Buttons ================= */
.filled-button {
  display: inline-block;
  background: var(--accent-color);
  color: var(--secondary-color);
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  text-decoration: none;
  transition: background 0.3s;
}

.filled-button:hover {
  background: #0066cc;
}

.normal-button {
  display: inline-block;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  text-decoration: none;
  margin-left: 1rem;
  transition: 0.3s;
}

.normal-button:hover {
  background: var(--accent-color);
  color: var(--secondary-color);
}

/* ================= Footer ================= */
.footer {
  background: var(--primary-color);
  color: var(--secondary-color);
  text-align: center;
  padding: 2rem 1rem;
}

.footer p {
  margin-bottom: 1rem;
}

.footer ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.footer ul li {
  margin: 0 10px;
}

.footer ul li a {
  color: var(--accent-color);
  text-decoration: none;
}

.footer ul li a:hover {
  text-decoration: underline;
}