/* General Styles */
body {
  margin: 0;
  padding: 0;
  background-color: #fff;
  color: #333;
}

h3 {
  margin-bottom: 20px;
  font-weight: bold;
}

.logo-top {
  margin-left: 50px;
  max-width: 100px;
  height: auto;
}

.upload-btn {
  background-color: #007bff;
  color: white;
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  font-weight: 500;
  text-decoration: none;
  margin-bottom: 10px;
}

.upload-btn:hover{
  background-color: white;
  color: #007bff;
  border: 2px solid #007bff;
}

.logout-btn{
  border: 2px solid red;
  color: rgb(255, 0, 0);
  padding: 8px 16px;
  border-radius: 4px;
  font-weight: 500;
  text-decoration: none;
  margin-right: 50px;
}

.logout-btn:hover{
  background-color: rgb(250, 72, 72);
  border: 2px solid rgb(250, 72, 72);
  color: rgb(255, 255, 255);
  padding: 8px 16px;
  border-radius: 4px;
  font-weight: 500;
  text-decoration: none;
  margin-right: 50px;
}

.top-header {
  position: sticky;
  top: 0;
  z-index: 1050; /* Make sure it stays above other elements */
  width: 100%;
  border-bottom: 1px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  height: 110px; /* match this with sidebar's top */
}

/* Sidebar Styles */
.sidebar {
  position: sticky;
  top: 110px; /* exactly equal to .top-header height */
  align-self: flex-start;
  height: calc(100vh - 110px);
  width: 220px;
  border-right: 1px solid #ddd;
  text-align: center;
  background-color: #fff;
  z-index: 1040;
}

.sidebar .nav-link {
  color: #333;
  padding: 10px 0;
  font-weight: 500;
}

.sidebar .nav-item:hover {
  border-radius: 10px;
  background-color: #000000;
}

.sidebar .nav-link:hover {
  color: #ffffff;
}

.sidebar .nav-link.active {
  background-color: #e0e0e0;
  color: #000;
  border-radius: 4px;
}

.sidebar img.logo {
  /* margin-bottom: 10px; */
  max-width: 80px;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* Hero Section */
.hero {
  height: 70vh;
  background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url('../images/hero.jpg') no-repeat center center/cover;
  padding: 40px;
}

.hero h2 {
  font-size: 3rem;
  font-weight: bold;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.track-box {
  background: #f8f9fa;
  padding: 20px;
  border: 1px solid #ddd;
  text-align: center;
  font-weight: 500;
  border-radius: 8px;
  transition: transform 0.3s ease;
  cursor: pointer;
}

.track-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Registration Cards */
.card {
  background-color: #f2f2f2 !important;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  min-height: 350px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.card h5 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0;
}

.card h2 {
  font-size: 2rem;
  font-weight: bold;
  margin: 0 auto;
}

.btn-outline-primary {
  border-radius: 25px;
  padding: 8px 20px;
  font-weight: 500;
  align-self: center;
}

/* Preloader container */
#preloader {
  position: fixed;
  inset: 0;
  background-color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

/* Wrapper to center logo and spinner ring */
.spinner-wrapper {
  position: relative;
  width: 100px;
  height: 100px;
}

/* Logo stays still */
.preloader-logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
  position: absolute;
  top: 25px;
  left: 25px;
  z-index: 2;
}

/* Spinner ring rotates */
.spinner-ring {
  width: 150px;
  height: 150px;
  border: 5px solid transparent;
  border-top: 5px solid #007bff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 1;
  position: absolute;
  top: 0;
  left: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Schedule Table */
.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 40px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

.schedule-table th, .schedule-table td {
  border: 1px solid #ccc;
  padding: 8px 10px;
  text-align: center;
}

.schedule-table th {
  background-color: #007bff;
  color: #fff;
  font-weight: 600;
}

.schedule-table .session-header {
  background-color: #e9ecef;
  font-weight: bold;
}

.schedule-table .highlight {
  background-color: #f8f9fa;
  font-weight: bold;
  color: #007bff;
}

.schedule-table .subtext {
  font-size: 0.85rem;
  color: #6c757d;
}

.schedule-day {
  background-color: #343a40;
  color: white;
  font-weight: bold;
  text-align: center;
}

/* About img transfer */
.transform{
  cursor: pointer;
  transition: transform 0.3s ease;
}

.transform:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.info-box {
  max-width: 90%;
  /* padding: 20px 30px; */
  border-radius: 12px;
  /* box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05); */
  text-align: justify;
  /* font-size: 1rem; */
  line-height: 1.5;
}

/* Footer */
footer {
  font-size: 0.9rem;
}

/* Responsive Styles for Mobile */
@media (max-width: 768px) {
  .upload-btn,
  .logout-btn {
    margin: 5px 0;
    width: 100%;
  }

  .sidebar .nav-link {
    display: block;
    padding: 10px;
  }

  .hero {
    height: 45vh;
    padding: 30px 20px;
  }

  .hero h2 {
    font-size: 1rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .container {
    padding: 1rem;
  }

  .card {
    margin-bottom: 20px;
  }

  .row.g-3 > h4 {
    font-size: 1.2rem;
    margin-top: 30px;
  }

  .card h2 {
    font-size: 1.5rem;
  }

  .card h5 {
    font-size: 0.95rem;
  }

  .btn-outline-primary {
    width: 100%;
  }
}

/* Hamburger default hidden */
.hamburger {
  font-size: 26px;
  background: none;
  border: none;
  color: #333;
  padding: 6px 12px;
  cursor: pointer;
  display: none;
}

/* Close button inside sidebar */
.close-btn {
  background: none;
  border: none;
  font-size: 26px;
  color: #000;
  text-align: right;
  width: 100%;
  padding: 5px 10px;
  cursor: pointer;
  display: none; /* hidden by default */
}

/* Show close button on mobile when sidebar is open */
@media (max-width: 768px) {
  .close-btn {
    display: block;
  }
}

@media (max-width: 768px) {
  .slogan-text {
    display: none !important;
  }

  .sidebar {
    position: fixed;
    top: 110px; /* Below sticky header */
    left: 0;
    width: 100%;
    background-color: #fff;
    z-index: 1050;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
     /* 👇 TRANSITION SETUP */
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  }

  .sidebar.active {
    transform: translateX(0);;
  }
}

@media (max-width: 768px) {
  .top-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: auto;
    padding: 10px 20px;
  }

  .logo-left {
    display: flex;
    align-items: center;
  }

  .hamburger {
    display: block;
    font-size: 26px;
    padding: 6px 10px;
    background: none;
    border: none;
    color: #333;
    cursor: pointer;
  }

  .upload-btn {
    display: none;
  }

  .logo-top {
    margin: 0;
    max-width: 90px;
    height: auto;
  }
}

.toggle-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.toggle-buttons .btn {
  min-width: 200px;
  text-align: center;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 1rem;
  transition: 0.3s ease;
}

@media (max-width: 768px) {
    #about-section p {
      line-height: 1.5;
      font-size: 0.9rem;
      margin-bottom: 15px;
    }

    #about-section .col-md-7 {
      background-color: rgba(255, 255, 255, 0.85);
      padding: 15px;
      border-radius: 12px;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    }

    #about-section .container {
      margin-left: 0 !important;
    }

    #about-section .col-md-4 img {
      width: 100%;
      height: auto;
    }
  }

/* Ensure horizontal scroll on mobile only */
@media (max-width: 768px) {
  .table-responsive-mobile {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .table-responsive-mobile table {
    min-width: 800px; /* Adjust if needed */
    width: 100%;
  }

  body {
    overflow-x: hidden; /* Prevent full-page horizontal scroll */
  }
}
/* Prevent horizontal scroll on ultra small screens */
@media (max-width: 575.98px) {
  body {
    overflow-x: hidden; /* Lock body */
  }

  .table-responsive-mobile {
    width: 100vw;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .table-responsive-mobile table {
    min-width: 650px; /* You can adjust based on your column count */
    width: max-content;
  }
}

/* Preloader */
@media (max-width: 576px) {
  .spinner-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
  }

  .preloader-logo {
    width: 50px;
    height: 50px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .spinner-ring {
    width: 100px;
    height: 100px;
    border-width: 4px;
    top: 0;
    left: 0;
  }
}