/* =========================
   COLOR VARIABLES & ROOT
   ========================= */
:root {
  --primary-color: #0033A0; /* Royal Blue */
  --accent-color: #C8102E;  /* Red */
  --dark-color: #1a1a1a;
  --light-color: #ffffff;
  --gray-bg: #f9f9f9;
}

/* =========================
   GENERAL STYLES
   ========================= */
body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--gray-bg);
  color: #222;
  margin: 0;
  padding: 0;
  transition: background 0.3s, color 0.3s;
}

section {
  padding-top: 60px;
  padding-bottom: 60px;
}

h1, h2, h3 {
  font-weight: 700;
}

p {
  font-size: 1rem;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

/* =========================
   DARK MODE
   ========================= */
body.dark-mode {
  background-color: #121212;
  color: #e0e0e0;
}

body.dark-mode .bg-light {
  background-color: #1f1f1f !important;
}

body.dark-mode .card {
  background-color: #2c2c2c;
  color: #f0f0f0;
}

body.dark-mode .btn-outline-dark:hover {
  background-color: #fff;
  color: #000;
}

body.dark-mode .navbar, 
body.dark-mode footer {
  background-color: #111 !important;
}

body.dark-mode .nav-link {
  color: #ccc !important;
}

/* =========================
   NAVBAR
   ========================= */
.navbar {
  transition: background 0.3s ease;
  background-color: var(--primary-color) !important;
}

.navbar-brand {
  font-weight: bold;
  font-size: 1.3rem;
}

.navbar-brand img {
  max-height: 42px;
}

.nav-link.active, .nav-link:hover {
  color: var(--accent-color) !important;
}

/* =========================
   HERO SECTION
   ========================= */
section.bg-dark.text-white {
  background-size: cover;
  background-position: center;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.55);
  z-index: -1;
}

/* =========================
   CARDS
   ========================= */
.card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
  transform: scale(1.02);
}

.card img {
  object-fit: cover;
  height: 220px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

/* =========================
   BUTTONS
   ========================= */
.btn-warning {
  color: #222;
  font-weight: bold;
}

.btn-outline-dark:hover {
  background-color: #333;
  color: #fff;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--light-color);
}

.btn-primary:hover {
  background-color: #002070;
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: var(--light-color);
}

.btn-accent {
  background-color: var(--accent-color);
  color: #fff;
}

.btn-accent:hover {
  background-color: #990000;
  color: #fff;
}

/* =========================
   SECTION TITLES & TEXT
   ========================= */
.section-title {
  color: var(--primary-color);
}

.text-brand {
  color: var(--primary-color);
}

/* =========================
   BRAND UTILS
   ========================= */
.bg-brand {
  background-color: var(--primary-color) !important;
  color: var(--light-color);
}

/* =========================
   FOOTER
   ========================= */
footer {
  background-color: var(--primary-color);
  color: #eee;
  padding: 40px 0;
}

footer a {
  color: #ccc;
  transition: all 0.3s ease;
}

footer a:hover {
  color: #fff;
  text-decoration: underline;
}

/* =========================
   SCROLL TO TOP / SCROLL INDICATOR
   ========================= */
#scrollToTopBtn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: none;
  background-color: var(--accent-color);
  color: #fff;
  border: none;
  padding: 12px 14px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
}

#scrollToTopBtn:hover {
  background-color: #a40000;
}

.scroll-indicator {
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  color: #fff;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* =========================
   RESPONSIVE STYLES
   ========================= */
@media (max-width: 768px) {
  section {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .card img {
    height: 180px;
  }

  .navbar-brand {
    font-size: 1.1rem;
  }
}