/* style_clean.css - Consolidated, deduped, mobile-friendly */

/*---------------------------------
  Corporate Palette & Base
---------------------------------*/
:root {
  --primary-light: #8CF200;
  --primary-dark:  #20B300;
  --neutral-dark:  #101313;
  --gray-light:   #F4F4F4;
  --gray-medium:  #CCCCCC;
  --white:        #FFFFFF;
  --font-base:    'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-base);
  background-color: var(--gray-light);
  color: var(--neutral-dark);
  line-height: 1.6;
}
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/*---------------------------------
  Layout: Container & Header
---------------------------------*/
.container {
  width: 100%;
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}
header {
  background-color: var(--neutral-dark);
  color: var(--white);
  padding: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
header h1, header h2 {
  margin: 0.5rem 0;
}
nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
nav ul li a {
  display: block;
  padding: 0.5rem 0.75rem;
  background: var(--primary-dark);
  color: var(--white);
  border-radius: 4px;
  transition: background 0.2s;
}
nav ul li a:hover,
nav ul li a.active { background: var(--primary-light); color: var(--neutral-dark); }
.hamburger { display: none; background: none; border: none; font-size: 1.5rem; color: var(--white); }
@media(max-width: 768px) {
  .hamburger { display: block; }
  nav ul { display: none; flex-direction: column; width: 100%; }
  nav.open ul { display: flex; }
}

/*---------------------------------
  Typography: Page Titles
---------------------------------*/
.page-title {
  text-align: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 480px) {
  .page-title { font-size: 1.5rem; margin-bottom: 1rem; }
}

/*---------------------------------
  Forms & Controls
---------------------------------*/
form {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  margin-bottom: 2rem;
}
.form-group {
  margin-bottom: 1rem;
}
.form-group > label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--gray-medium);
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--primary-dark); }
.form-group-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}
.form-group-inline .form-group { flex: 1; min-width: 140px; }
.checkbox-list {
  max-height: 200px;
  overflow-y: auto;
  padding: 0.5rem;
  border: 1px solid var(--gray-medium);
  border-radius: 4px;
  background: var(--gray-light);
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  line-height: 1.2;
}

.checkbox-item input[type="checkbox"] {
  flex-shrink: 0;
  margin: 0;
}





/*---------------------------------
  Buttons
---------------------------------*/
.btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
  text-align: center;
}
.btn-primary { background: var(--primary-dark); color: var(--white); }
.btn-primary:hover { background: var(--primary-light); }
.btn-secondary { background: var(--gray-medium); color: var(--neutral-dark); }
.btn-secondary:hover { background: var(--gray-light); }
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.85rem; }

/*---------------------------------
  Tables
---------------------------------*/
.table-wrapper { overflow-x: auto; margin-bottom: 2rem; }
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th,
.data-table td {
  padding: 0.75rem 0.5rem;
  border: 1px solid var(--gray-medium);
  text-align: left;
}
.data-table th { background: var(--primary-dark); color: var(--white); }
.data-table tbody tr:nth-child(even) { background: var(--gray-light); }

/*---------------------------------
  Cards & Summaries
---------------------------------*/
.card { background: var(--white); padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 6px rgba(0,0,0,0.1); margin-bottom: 2rem; }
.card .stat { font-size: 2em; font-weight: bold; color: var(--primary-dark); }
.card .label { color: var(--neutral-dark); }

/*---------------------------------
  Alerts
---------------------------------*/
.alert { padding: 0.75rem 1rem; border-radius: 4px; margin-bottom: 1rem; text-align: center; }
.alert-success { background: #E6F7E6; color: #2D662D; border: 1px solid var(--primary-dark); }
.alert-warning { background: #FFF4E5; color: #7A5100; border: 1px solid #FFC107; }
.alert-error   { background: #FDECEA; color: #A70000; border: 1px solid #D32F2F; }

/*---------------------------------
  Pagination & Links
---------------------------------*/
.pagination { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; margin: 2rem 0; }
.page-link { padding: 0.4rem 0.8rem; background: var(--white); border: 1px solid var(--gray-medium); border-radius: 4px; color: var(--neutral-dark); text-decoration: none; transition: background 0.2s; }
.page-link:hover { background: var(--gray-light); }
.page-link.active { background: var(--primary-dark); color: var(--white); border-color: var(--primary-dark); }

/*---------------------------------
  Responsive Adjustments
---------------------------------*/
@media (max-width: 768px) {
  .form-group-inline { flex-direction: column; }
  nav ul { flex-direction: column; gap: 0; }
  .btn { width: 100%; }
}
@media (max-width: 480px) {
  .card, form { padding: 1rem; }
  .page-title { font-size: 1.5rem; }
  .data-table th, .data-table td { padding: 0.6rem 0.4rem; font-size: 0.9rem; }
  .btn { padding: 0.65rem; font-size: 0.95rem; }
}

/*---------------------------------------
 Login Page
 ---------------------------------------*/
 /* Login Page Background */
body.login-page {
 /* background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-dark) 100%);*/
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

/* Login Container */
.login-container {
  background: var(--white);
  padding: 2rem 1.5rem;
  border-radius: 8px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  text-align: center;
}

/* Title */
.login-title {
  margin-bottom: 1.5rem;
  font-family: var(--font-base);
  font-size: 1.75rem;
  color: var(--neutral-dark);
}

/* Alerts */
.alert-error {
  background-color: #FDECEA;
  color: #A70000;
  border: 1px solid #D32F2F;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

/* Form */
.login-form .form-group {
  margin-bottom: 1.25rem;
  text-align: left;
}
.login-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--neutral-dark);
}
.login-form input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--gray-medium);
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color 0.2s;
}
.login-form input:focus {
  outline: none;
  border-color: var(--primary-dark);
}

/* Button */
.login-form .btn {
  width: 100%;
  padding: 0.85rem;
  background-color: var(--primary-dark);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
  margin-top: 0.5rem;
}
.login-form .btn:hover {
  background-color: var(--primary-light);
}

/* Responsive tweaks */
@media (max-width: 400px) {
  .login-container {
    padding: 1.5rem 1rem;
  }
  .login-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  .login-form input {
    padding: 0.65rem;
    font-size: 0.95rem;
  }
  .login-form .btn {
    padding: 0.75rem;
    font-size: 1rem;
  }
}


/*--------------- Student Dashboard -------------------*/
.badge {
  display: inline-block;
  padding: 0.35em 0.65em;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  color: #fff;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: 0.375rem;
}

.bg-success {
  background-color: #198754; /* Green */
}

.bg-warning {
  background-color: #ffc107; /* Yellow */
  color: #000; /* Better contrast */
}

.bg-danger {
  background-color: #dc3545; /* Red */
}


.session-card {
    padding: 15px;
    background: #f8f9fa;
    border: 1px solid #ccc;
    margin-bottom: 10px;
    border-radius: 6px;
}

.locked {
    opacity: 0.5;
}

.locked-msg {
    color: red;
    font-weight: bold;
}