@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&display=swap');

body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f4f7f6;
    min-height: 100vh; /* Ensure body takes full viewport height */
    display: flex;
    flex-direction: column;
    overflow-y: scroll; /* Prevent layout shift from scrollbar appearing/disappearing */
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    width: 100%;
    height: 100%;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

#loading-screen .logo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.login-container {
    display: none; /* Hidden by default */
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container form {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
    width: 300px;
}

.logo {
    width: 100px;
    margin-bottom: 20px;
}

h2 {
    color: #333;
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group.input-group-static {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-group.input-group-static p {
    font-weight: 600; /* Semibold */
    margin: 0;
}

.input-group input, .input-group select, .input-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #2ecc71; /* Green */
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #27ae60;
}

.error {
    color: #e74c3c;
    margin-bottom: 15px;
}

/* Navbar for Student */
.navbar {
    background-color: #ffffff; /* White background */
    padding: 10px 20px; /* Adjusted padding */
    display: flex;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); /* Add shadow */
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    box-sizing: border-box; /* Ensure padding is included in the width */
}

.navbar .logo-container {
    display: flex;
    align-items: center;
    margin-top: 5px;
    gap: 10px;
}

.navbar .logo {
    width: 75px;
    height: 75px;
    margin-right: 10px;
}

.navbar h2 {
    color: rgb(75, 224, 142); 
    margin: 0;
    font-family: 'Poppins', sans-serif; /* Change font */
    font-size: 24px;
    line-height: 50px; /* Match logo height */
}

.navbar ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    margin-left: auto; /* Move links to the right */
}

.navbar ul li a {
    color: #333333; /* Dark text color */
    text-decoration: none;
    padding: 15px;
    display: block;
    position: relative;
    transition: background-color 0.3s;
}

.navbar ul li a:hover {
    background-color: #f1f1f1;
}

.navbar ul li a.active-link {
    color: #27ae60;
}

.navbar ul li a.active-link::after {
    content: '';
    position: absolute;
    bottom: 8px; /* Adjust vertical position of the line */
    left: 15px;
    right: 15px;
    height: 3px;
    background-color: #27ae60;
}

.hamburger-menu {
    display: none; /* Hidden by default on large screens */
    background: none;
    border: none;
    font-size: 30px;
    cursor: pointer;
    color: #333;
    padding: 0;
}

.nav-links {
    display: flex; /* Default for large screens */
    align-items: center;
    margin-left: auto;
}

.nav-links ul {
    display: flex; /* Default for large screens */
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.nav-links .user-info {
    margin-left: 20px; /* Keep spacing for admin logout */
}

/* Navbar for Admin */
.admin-navbar {
    background-color: #ffffff; /* White background for admin */
}

.admin-navbar .user-info {
    margin-left: 20px;
}

.admin-navbar .user-info a {
    color: #333333; /* Dark logout link white */
}

/* General Layout */
.main-container {
    display: flex;
    flex: 1; /* Allow main content to grow */
}

.sidebar {
    width: 250px;
    background-color: #34495e; /* Blue */
    color: white;
    height: 100vh;
    padding: 20px;
}

.sidebar h2 {
    color: white;
    text-align: center;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 10px;
    border-radius: 4px;
}

.sidebar ul li a:hover {
    background-color: #2c3e50;
}

.content {
    flex-grow: 1;
    padding: 20px 60px; /* Increased horizontal padding */
}

.dashboard-content {
    position: relative;
}

.header {
    background-color: #fff;
    padding: 10px 20px;
    border-bottom: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header .user-info a {
    color: #333;
    text-decoration: none;
    margin-left: 15px;
}

/* Card Layout */
.card {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#live-clock {
    font-size: 18px;
    font-weight: bold;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.day-card {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 4px;
}

.day-card h4 {
    margin-top: 0;
}

.datetime-container {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 18px;
    z-index: 10; /* Ensure it's above other content */
}

/* Footer */
.main-footer {
    background-color: #333;
    color: white;
    padding: 20px;
    text-align: center;
    font-size: 14px;
    margin-top: auto; /* Push footer to the bottom */
}

.main-footer .footer-content {
    display: flex;
    justify-content: space-around;
    align-items: flex-start; /* Align items to the top */
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
    max-width: 1200px;
    margin: 0 auto;
}

.main-footer .footer-section {
    flex: 1;
    min-width: 250px; /* Minimum width for each section */
    margin: 10px;
    text-align: left;
}

.main-footer .footer-section.contact-section {
    text-align: right;
}

.footer-content p {
    margin: 5px 0;
}

.footer-content a {
    color: #2ecc71;
    text-decoration: none;
}

.footer-content a:hover {
    text-decoration: underline;
}

.footer-separator {
    border: 0;
    height: 1px;
    background-color: #555;
    margin: 10px auto;
    width: 80%; /* Adjust width as needed */
}

/* Class Filters */
.class-filters {
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.class-button {
    background-color: #2ecc71;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
}

.class-button:hover, .class-button.active {
    background-color: #41c4bd;
    color: white;
}

.schedule-display h4 {
    margin-top: 20px;
    margin-bottom: 10px;
}

.schedule-display h5 {
    margin-top: 15px;
    margin-bottom: 5px;
    color: #333;
}

.schedule-display ul {
    list-style-type: none;
    padding: 0;
}

.schedule-display ul li {
    background-color: #f0f0f0;
    margin-bottom: 5px;
    padding: 8px;
    border-radius: 3px;
}

/* Admin Schedule Management */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

table th {
    background-color: #f2f2f2;
}

.message {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.action-buttons button {
    display: inline-block;
    width: auto;
    margin-right: 5px;
}

.action-buttons a:hover {
    text-decoration: underline;
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 1px solid #ddd;
}

.tab-button {
    background-color: #f1f1f1;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
    color: black;
}

.tab-button:hover {
    background-color: #ddd;
}

.tab-button.active {
    background-color: #ccc;
    border-bottom: 1px solid #fff;
}

.tab-content {
    display: none;
    padding: 6px 12px;
    border-top: none;
}

/* New Dashboard Styles */
.hero-section {
    min-height: calc(100vh - 70px); /* Adjust 70px based on actual navbar height */
    display: flex;
    align-items: center;
    padding-bottom: 40px; /* Add some padding at the bottom */
}

.welcome-container {
    display: flex;
    align-items: center;
    gap: 40px;
    width: 100%; /* Ensure it takes full width */
}

.welcome-left {
    flex: 1;
    margin-bottom: 95px;
}

.welcome-right {
    flex-shrink: 0;
    margin-bottom: 95px;
}

.welcome-logo {
    width: 400px; /* Increased size */
    height: auto; /* Adjust height automatically */
    border-radius: 8px; /* Optional: add a slight border radius for aesthetics */
}

.welcome-left h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.welcome-left p {
    font-size: 18px;
    color: #555;
    margin-bottom: 20px;
}

.welcome-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.btn-welcome {
    background-color: #60d394; /* Softer green */
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 25px; /* Rounded shape */
    font-size: 18px;
    display: inline-block;
    transition: background-color 0.3s;
}

.btn-welcome:hover {
    background-color: #50b880; /* Slightly darker green */
}

.weekly-schedule-header {
    margin-top: 40px;
}

.weekly-schedule-header h3 {
    font-size: 28px;
}

.weekly-schedule-header .current-day {
    font-size: 48px;
    font-weight: bold;
    color: #27ae60;
    margin-top: 10px;
}

.today-schedule {
    margin-top: 20px;
}

.today-schedule h4 {
    font-size: 22px;
    margin-bottom: 15px;
}

.today-schedule ul {
    list-style-type: none;
    padding: 0;
}

.today-schedule ul li {
    background-color: #fff;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.schedule-image-section {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    margin-top: 40px;
}

.schedule-image-left {
    flex: 1;
}

.schedule-image-left img {
    max-width: 80%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    display: block; /* To allow margin auto for centering */
    margin: 0 auto; /* Center the image */
}

.schedule-image-right {
    flex: 1;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    /* General */
    body {
        font-size: 14px;
    }

    /* Navbar */
    .navbar {
        flex-direction: column; /* Stack logo-container and nav-links vertically */
        padding: 10px;
        align-items: flex-start; /* Align items to the start */
    }

    .navbar .logo-container {
        display: flex; /* Ensure logo, text, and hamburger are aligned */
        align-items: center;
        justify-content: space-between; /* Distribute space between logo/text and hamburger */
        width: 100%; /* Take full width */
        margin-bottom: 10px; /* Add some space below logo-container */
    }

    .hamburger-menu {
        display: block; /* Show hamburger on small screens */
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
        display: none; /* Hidden by default on small screens */
        margin-left: 0; /* Reset margin */
        text-align: center;
    }

    .nav-links.active {
        display: flex; /* Show when active */
    }

    .nav-links ul {
        flex-direction: column;
        width: 100%;
    }

    .nav-links ul li a {
        padding: 10px;
        border-bottom: 1px solid #eee;
    }

    .nav-links ul li:last-child a {
        border-bottom: none;
    }

    .nav-links .user-info {
        margin-top: 10px;
        margin-left: 0;
    }

    /* Main Layout */
    .main-container {
        flex-direction: column;
    }

    .sidebar {
        display: none; /* Hide sidebar on small screens */
    }

    .content {
        padding: 15px;
    }

    /* Login Page */
    .login-container form {
        width: 90%;
        padding: 20px;
    }

    /* Dashboard Student */
    .hero-section {
        min-height: auto;
        padding-bottom: 20px;
    }

    .welcome-container {
        flex-direction: column;
        gap: 20px;
    }

    .welcome-right {
        display: none; /* Hide image on small screens */
    }

    .welcome-left, .welcome-right {
        margin-bottom: 0;
    }

    .welcome-logo {
        width: 80%;
        max-width: 300px;
    }

    .welcome-left h2 {
        font-size: 28px;
    }

    .welcome-left p {
        font-size: 16px;
    }

    .welcome-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .schedule-image-section {
        flex-direction: column;
        gap: 20px;
    }

    .schedule-image-left img {
        max-width: 100%;
        display: none;
    }

    /* Tables */
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    /* Footer */
    .main-footer .footer-content {
        flex-direction: column;
        align-items: center;
    }

    .main-footer .footer-section {
        min-width: unset;
        text-align: center;
    }

    .main-footer .footer-section.contact-section {
        text-align: center;
    }
}
img { max-width: 100%; height: auto; }

/* Highlight for the current user's schedule */
.current-user-schedule {
    font-weight: bold;
    color: black;
    background-color: #90ee90; /* lightgreen */
    padding: 12px 8px; /* Increased vertical padding */
}

/* Scroll to top button */
#scrollTopBtn {
  display: none; /* Hidden by default */
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 99;
  border: none;
  outline: none;
  background-color: #27ae60;
  color: white;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 18px;
  line-height: 40px;
  text-align: center;
  padding: 0;
}

#scrollTopBtn:hover {
  background-color: #34495e;
}

/* Collapsible List Styles */
.collapsible-list {
  max-height: 400px; /* Height when collapsed */
  overflow: hidden;
  transition: max-height 0.5s ease-out;
}

.collapsible-list.expanded {

  max-height: 5000px; /* A large enough value to show all content */

}



/* Styles for the student dashboard collapsible list */

.today-schedule .collapsible-list {

  max-height: 120px; /* Approx. 3-4 items */

  overflow: hidden;

  transition: max-height 0.5s ease-out;

}



.today-schedule .collapsible-list.expanded {

  max-height: 1500px; /* Adjust if needed */

}



.toggle-button {

    background: none;

    border: none;

    color: #27ae60;

    cursor: pointer;

    padding: 5px 0;

    text-decoration: underline;

    font-weight: bold;

    width: auto; /* Override default button width */

}