/* ========== CSS Variables ========== */
:root {
  --primary: #1a56db;
  --primary-dark: #1344b3;
  --primary-light: #e8f0fe;
  --dark: #0b1d3a;
  --dark-light: #132b52;
  --gray: #666;
  --gray-light: #f5f7fa;
  --gray-border: #e0e4e8;
  --white: #fff;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.3s ease;
}

/* ========== Container ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Top Bar ========== */
.top-bar {
  background: var(--dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  height: 40px;
  line-height: 40px;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.top-bar-left span {
  margin-right: 24px;
}

.top-bar-right a {
  color: rgba(255,255,255,0.85);
  margin-left: 12px;
  font-size: 16px;
  transition: color var(--transition);
}

.top-bar-right a:hover {
  color: var(--white);
}

/* ========== Main Nav ========== */
.main-nav {
  background: var(--white);
  height: 70px;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.main-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
}

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

.nav-logo span {
  color: var(--primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu li a {
  display: block;
  padding: 8px 18px;
  font-size: 15px;
  color: #333;
  font-weight: 500;
  border-radius: 4px;
  transition: color var(--transition);
  position: relative;
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--primary);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
  width: 60%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #333;
  transition: var(--transition);
}

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  text-align: center;
  transition: all var(--transition);
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26,86,219,0.4);
}

.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
}

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

.btn-outline-dark {
  border: 2px solid var(--primary);
  color: var(--primary);
}

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

.btn-sm {
  padding: 6px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
}

/* ========== Section Titles ========== */
.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title .subtitle {
  display: inline-block;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  position: relative;
  padding-bottom: 8px;
}

.section-title .subtitle::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: var(--primary);
}

.section-title h2 {
  font-size: 32px;
  color: var(--dark);
  margin-top: 12px;
  font-weight: 700;
}

.section-title p {
  color: var(--gray);
  margin-top: 10px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== Page Banner ========== */
.page-banner {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
  padding: 60px 0;
  text-align: center;
  color: var(--white);
}

.page-banner h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 8px;
}

.breadcrumb {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}

.breadcrumb a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--white);
}

.breadcrumb span {
  margin: 0 8px;
}

/* ========== Footer ========== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 18px;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links li a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-links li a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-contact p {
  font-size: 14px;
  margin-bottom: 12px;
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: var(--white);
}