/* -----------------
   Global Base Styles
----------------- */

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #e0f2f7 0%, #cceeff 50%, #e0f2f7 100%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: 70px; /* adjust for navbar height */
  overflow-x: hidden;
}

/* -----------------
   Navbar Styles
----------------- */

.navbar {
  transition: all 0.3s ease;
  background: rgba(0, 34, 68, 0.95);
  backdrop-filter: blur(6px);
  padding: 0.5rem 1rem;
}

.navbar.scrolled {
  background: rgba(0, 34, 68, 0.98);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
  display: flex;
  align-items: center;
  margin-right: 0;
  flex-direction: row;
}

.navbar-brand img {
  height: 50px;
  width: auto;
  max-width: 100%;
  transition: transform 0.3s ease;
}

.navbar-brand img:hover {
  transform: scale(1.05);
}

.navbar-brand span {
  margin-left: 10px;
  font-weight: bold;
  font-size: 1rem;
  color: #f1c40f;
  letter-spacing: 1px;
  line-height: 1.2;
  white-space: normal;
}

.navbar-toggler {
  border: 1px solid rgba(255,255,255,0.3);
  padding: 0.25rem 0.5rem;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 1.2em;
  height: 1.2em;
}

.navbar-nav .nav-link {
  color: #fff !important;
  font-weight: 600;
  margin: 0 8px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  transition: color 0.3s ease, transform 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .dropdown:hover > .nav-link {
  color: #f1c40f !important;
  transform: translateY(-2px);
}

/* Dropdown Menu */

.dropdown-menu {
  background: #002244;
  border-radius: 6px;
  border: none;
}

.dropdown-item {
  color: #fff !important;
  transition: background 0.3s ease, padding-left 0.3s ease;
}

.dropdown-item:hover {
  background: #f1c40f;
  color: #002244 !important;
  padding-left: 15px;
}

.navbar-nav .dropdown:hover > .dropdown-menu {
  display: block;
  margin-top: 0;
}

/* -----------------
   LinkedIn Sections
----------------- */

.linkedin-embed-container,
.linkedin-preview-container {
  background: #fff;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  transform: translateY(30px);
}

.linkedin-embed-container.animated {
  animation: fadeInUp 0.6s ease forwards;
}

.linkedin-placeholder {
  border: 1px dashed #ccc;
  border-radius: 8px;
  padding: 50px 20px;
  width: 100%;
  max-width: 500px;
  font-style: italic;
  color: #888;
}

.linkedin-preview-container {
  margin-top: 20px;
}

.linkedin-preview-container h4 {
  color: #0a66c2;
  margin-bottom: 15px;
}

.linkedin-preview-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Small Carousel */
.small-carousel {
  max-width: 600px;
  margin: auto;
}

.small-carousel .carousel-inner img {
  height: 250px;
  object-fit: cover;
  border-radius: 10px;
}

/* -----------------
   Event Card Styles
----------------- */

.event-card {
  position: relative;
  display: block;
  color: white;
  height: 220px;
  border-radius: 10px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
}

.event-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(30, 30, 60, 0.85);
  z-index: 1;
  border-radius: 10px;
}

.event-card-content {
  position: relative;
  z-index: 2;
  padding: 15px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.event-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.8);
}

.event-card-date {
  font-size: 0.9rem;
  font-weight: 500;
  color: #f1c40f;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.8);
}

.event-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0,0,0,0.3);
}

/* -----------------
   Sponsor Styles
----------------- */

.section {
  padding: 60px 0;
  flex-grow: 1;
}

.container {
  max-width: 1200px;
}

.sponsor-main-title {
  font-size: 2.8rem;
  font-weight: 700;
  color: #0a66c2;
  position: relative;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  text-align: center;
}

.sponsor-main-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: #0a66c2;
  border-radius: 2px;
}

.sponsor-intro {
  font-size: 1.1rem;
  color: #555;
  max-width: 800px;
  margin: 0 auto 4rem auto;
  text-align: center;
}

.sponsor-category {
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.07);
  margin-bottom: 3rem;
  padding: 30px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.sponsor-category:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.category-title {
  font-size: 2rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 0;
}

.sponsor-logo-link {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 15px;
  border-radius: 8px;
  transition: background-color 0.3s ease, transform 0.2s ease;
  height: 100%;
  width: 100%;
  text-align: center;
}

.sponsor-logo-link:hover {
  background-color: rgba(0, 102, 194, 0.05);
  transform: translateY(-3px);
}

.sponsor-logo {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  filter: grayscale(10%) contrast(110%);
  transition: filter 0.3s ease;
  max-height: 150px;
}

.sponsor-logo-link:hover .sponsor-logo {
  filter: grayscale(0%) contrast(100%);
}

.sponsor-logo.large-logo { max-height: 180px; max-width: 350px; }
.sponsor-logo.medium-logo { max-height: 120px; max-width: 250px; }
.sponsor-logo.small-logo { max-height: 80px; max-width: 180px; }

/* -----------------
   Button Icon Toggle
----------------- */

.btn-outline-primary .toggle-icon {
  transition: transform 0.3s ease;
}

.btn[aria-expanded="true"] .toggle-icon {
  transform: rotate(180deg);
}

/* -----------------
   Responsive Styles
----------------- */

@media (max-width: 768px) {
  .sponsor-main-title { font-size: 2rem; }
  .category-title { font-size: 1.5rem; }
  .sponsor-category { padding: 20px; }
  .sponsor-logo.large-logo { max-height: 140px; }
  .sponsor-logo.medium-logo { max-height: 100px; }
  .sponsor-logo.small-logo { max-height: 70px; }

  .navbar-brand span {
    font-size: 0.8rem;
    max-width: 120px;
  }
}

@media (max-width: 576px) {
  .navbar-brand {
    flex-direction: column;
    align-items: flex-start;
  }

  .navbar-brand span {
    margin-left: 0;
    margin-top: 5px;
    max-width: 150px;
  }
}

@media (max-width: 360px) {
  .navbar-brand img {
    height: 40px;
  }

  .navbar-brand span {
    font-size: 0.7rem;
  }
}