/* Import Poppins font for a modern look */
@import url('[https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap](https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap)');

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html {
    font-size: 62.5%; /* 1rem = 10px */
}

body {
    width: 100%;
    min-height: 100vh;
    background: linear-gradient(135deg, #CCE0F0 0%, #A0C0D0 100%); /* Light icy blue gradient */
    color: #333; /* Darker text color for contrast */
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    overflow-x: hidden;
}

/* General spacing utility */
.mt-3 {
    margin-top: 1.5rem; /* Equivalent to Bootstrap's mt-3 */
}
.mb-4 {
    margin-bottom: 2rem; /* Equivalent to Bootstrap's mb-4 */
}

/* App Container for overall styling */
.app-container {
    background: #E0F0FA; /* Lighter icy blue background */
    border-radius: 1.5rem;
    box-shadow: 0 0 40px rgba(0, 50, 100, 0.2); /* Subtle blue shadow */
    width: 100%;
    max-width: 1200px; /* Max width for larger screens */
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden; /* Ensure rounded corners are respected */
}

/* Page Management */
.page {
    display: none; /* Hide all pages by default */
    width: 100%;
    flex-grow: 1; /* Allow pages to fill available space */
}

.page.active {
    display: flex; /* Show active page */
    flex-direction: column;
}

/* Card Style for Login/Registration/Profile Setup */
.card {
    background: linear-gradient(120deg, #ADD8E6 60%, #E0F0FA 100%); /* Soft blue gradient */
    padding: 4rem;
    border-radius: 1.5rem;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.15); /* Soft shadow */
    text-align: center;
    max-width: 450px; /* Slightly wider for new forms */
    width: 100%;
    margin: auto; /* Center the card */
    min-height: 50vh; /* Ensure cards are visible */
    display: flex;
    flex-direction: column;
    justify-content: center; /* Center content vertically */
}


/* Login Page Styles */
.login-page, .registration-page, .student-profile-setup-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100%;
}

.login-card { /* Kept for backward compatibility, but .card is preferred for new pages */
    background: linear-gradient(120deg, #ADD8E6 60%, #E0F0FA 100%); /* Soft blue gradient */
    padding: 4rem;
    border-radius: 1.5rem;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.15); /* Soft shadow */
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-card h2, .card h2 {
    font-size: 3.2rem;
    color: #2F80ED; /* Deep blue accent */
    margin-bottom: 3rem;
    font-weight: 700;
}

.input-group {
    margin-bottom: 2rem;
    text-align: left;
}

.input-group label {
    display: block;
    font-size: 1.6rem;
    color: #555; /* Medium grey */
    margin-bottom: 0.8rem;
}

.input-group input, .input-group select, .input-group textarea {
    width: 100%;
    padding: 1.4rem 1.6rem;
    border: 1px solid #99BBCC; /* Light blue-grey border */
    border-radius: 0.8rem;
    background-color: #F8F8F8; /* Nearly white input background */
    color: #333;
    font-size: 1.8rem;
    transition: all 0.3s ease;
    resize: vertical; /* Allow vertical resizing for textareas */
}

.input-group input:focus, .input-group select:focus, .input-group textarea:focus {
    border-color: #2F80ED; /* Deep blue on focus */
    box-shadow: 0 0 12px rgba(47, 128, 237, 0.3);
    outline: none;
}
.input-group textarea {
    min-height: 80px;
}

.login-card .btn, .card .btn {
    width: 100%;
    padding: 1.5rem;
    font-size: 2rem;
    font-weight: 600;
    margin-top: 2rem;
}

.hint {
    font-size: 1.3rem;
    color: #777;
    margin-top: 2rem;
}

/* General Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 4rem;
    font-size: 1.6rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent;
}

.btn i {
    margin-right: 0.8rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.primary-btn {
    background-color: #2F80ED; /* Deep blue */
    color: #FFFFFF; /* White text */
    border-color: #2F80ED;
}

.primary-btn:hover {
    background-color: #56CCF2; /* Lighter blue */
    border-color: #56CCF2;
    color: #333;
}

.secondary-btn {
    background-color: transparent;
    color: #2F80ED;
    border-color: #2F80ED;
}
.secondary-btn:hover {
    background-color: #E6F2F8;
    color: #2F80ED;
    border-color: #E6F2F8;
}

.success-btn {
    background-color: #27AE60; /* Emerald green */
    color: #FFFFFF;
    border-color: #27AE60;
}

.success-btn:hover {
    background-color: #6FCF97; /* Lighter green */
    border-color: #6FCF97;
    color: #333;
}

.danger-btn {
    background-color: #EB5757; /* Fiery red */
    color: #FFFFFF;
    border-color: #EB5757;
}

.danger-btn:hover {
    background-color: #F2994A; /* Orange-red */
    border-color: #F2994A;
    color: #333;
}

.warning-btn {
    background-color: #F2C94C; /* Sunny yellow */
    color: #333;
    border-color: #F2C94C;
}

.warning-btn:hover {
    background-color: #F8D66F; /* Lighter yellow */
    border-color: #F8D66F;
    color: #333;
}

.info-btn {
    background-color: #BB6BD9; /* Soft purple */
    color: #FFFFFF;
    border-color: #BB6BD9;
}

.info-btn:hover {
    background-color: #D9B8F5; /* Lighter purple */
    border-color: #D9B8F5;
    color: #333;
}

/* Dashboard Header & Navigation */
.dashboard-header {
    background: linear-gradient(90deg, #A0C0D0 0%, #CCE0F0 100%); /* Icy blue gradient */
    padding: 1.5rem 3rem;
    display: flex;
    flex-wrap: wrap; /* Allow wrapping on small screens */
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    border-bottom: 2px solid rgba(47, 128, 237, 0.3); /* Subtle blue border */
}

.dashboard-header h2 {
    font-size: 2.8rem;
    color: #2F80ED; /* Deep blue */
    font-weight: 600;
}

.dashboard-header h2 span {
    font-size: 2rem;
    color: #555; /* Medium grey */
}

.dashboard-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-nav .nav-item {
    background: transparent;
    color: #555;
    border: 1px solid #99BBCC; /* Light blue-grey border */
    padding: 0.8rem 1.5rem;
    border-radius: 0.8rem;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dashboard-nav .nav-item:hover,
.dashboard-nav .nav-item.active {
    background-color: #2F80ED; /* Deep blue */
    color: #FFFFFF; /* White text */
    border-color: #2F80ED;
    box-shadow: 0 2px 10px rgba(47, 128, 237, 0.4);
}

/* Dashboard Content & Tabs */
.dashboard-content {
    padding: 2rem 3rem;
    flex-grow: 1;
    overflow-y: auto; /* Enable scrolling for content if needed */
}

.tab-content {
    display: none; /* Hide all tabs by default */
    background-color: #F8F8F8; /* Light background for tab content */
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1); /* Lighter shadow */
    min-height: 400px; /* Ensure content area is visible */
}

.tab-content.active {
    display: block; /* Show active tab content */
}

.tab-content h3 {
    font-size: 2.4rem;
    color: #2F80ED; /* Deep blue */
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(47, 128, 237, 0.2);
    padding-bottom: 1rem;
}

/* Action Buttons within Tabs */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    justify-content: flex-start;
}

/* Data Table Styling (mimicking ttk.Treeview) */
.data-table {
    background-color: #FFFFFF; /* White background for table */
    border-radius: 0.8rem;
    overflow: hidden;
    border: 1px solid #DDDDDD; /* Light grey border */
}

.table-header {
    display: flex;
    background-color: #E6F2F8; /* Very light blue for header */
    padding: 1.2rem 2rem;
    font-weight: 600;
    font-size: 1.5rem;
    color: #2F80ED; /* Deep blue for header text */
    border-bottom: 1px solid #DDDDDD;
}

.table-header span,
.table-row span {
    flex: 1;
    text-align: center;
    padding: 0.5rem;
    white-space: nowrap; /* Prevent text wrapping */
    overflow: hidden;
    text-overflow: ellipsis; /* Add ellipsis if text overflows */
}
/* Adjusting column widths for student table for more fields */
#warden-students .table-header span:nth-child(1),
#warden-students .table-row span:nth-child(1) { flex: 0.8; } /* Username */
#warden-students .table-header span:nth-child(2),
#warden-students .table-row span:nth-child(2) { flex: 1.2; } /* Name */
#warden-students .table-header span:nth-child(3),
#warden-students .table-row span:nth-child(3) { flex: 0.6; } /* Roll */
#warden-students .table-header span:nth-child(4),
#warden-students .table-row span:nth-child(4) { flex: 0.6; } /* Room */
#warden-students .table-header span:nth-child(5),
#warden-students .table-row span:nth-child(5) { flex: 1.2; } /* Contact */
#warden-students .table-header span:nth-child(6),
#warden-students .table-row span:nth-child(6) { flex: 1.5; } /* Email */
#warden-students .table-header span:nth-child(7),
#warden-students .table-row span:nth-child(7) { flex: 1.2; } /* Parent Phone */
#warden-students .table-header span:nth-child(8),
#warden-students .table-row span:nth-child(8) { flex: 2; text-align: left; } /* Address */


.table-row {
    display: flex;
    padding: 1rem 2rem;
    font-size: 1.4rem;
    border-bottom: 1px solid #EEEEEE; /* Even lighter border */
    transition: background-color 0.2s ease;
    color: #444; /* Darker text for table rows */
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:nth-child(even) {
    background-color: #F8F8F8; /* Alternate row color */
}

.table-row.selected, /* Highlight selected row */
.table-row:hover {
    background-color: #E6F2F8; /* Hover effect */
    cursor: pointer;
}


/* List Box Styling (for pending leaves, student leaves) */
.list-box {
    background-color: #FFFFFF;
    border-radius: 0.8rem;
    border: 1px solid #DDDDDD;
    margin-bottom: 2.5rem;
    max-height: 250px; /* Constrain height */
    overflow-y: auto; /* Enable scrolling */
}

.list-item {
    padding: 1.2rem 2rem;
    font-size: 1.5rem;
    border-bottom: 1px solid #EEEEEE;
    transition: background-color 0.2s ease;
    color: #444;
}

.list-item:last-child {
    border-bottom: none;
}

.list-item:nth-child(even) {
    background-color: #F8F8F8;
}

.list-item.selected, /* Highlight selected item */
.list-item:hover {
    background-color: #E6F2F8;
    cursor: pointer;
}

/* Profile Details Styling */
.profile-details p {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.profile-details p strong {
    color: #2F80ED;
    margin-right: 0.5rem;
}

/* Status Badges */
.status {
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    font-size: 1.3rem;
    display: inline-block;
    min-width: 80px; /* Ensure consistent width */
    text-align: center;
}

.status.pending {
    background-color: rgba(242, 201, 76, 0.2); /* Light yellow with transparency */
    color: #F2C94C;
    border: 1px solid #F2C94C;
}

.status.approved {
    background-color: rgba(39, 174, 96, 0.2); /* Light green with transparency */
    color: #27AE60;
    border: 1px solid #27AE60;
}

.status.rejected {
    background-color: rgba(235, 87, 87, 0.2); /* Light red with transparency */
    color: #EB5757;
    border: 1px solid #EB5757;
}

/* Modal Styles */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1000; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0, 0, 0, 0.6); /* Black w/ opacity */
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex; /* Show when active */
}

.modal-content {
    background: linear-gradient(120deg, #ADD8E6 60%, #E0F0FA 100%); /* Soft blue gradient */
    margin: auto;
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.4);
    width: 90%;
    max-width: 600px; /* Max width for modals */
    animation: fadeIn 0.3s ease-out;
    position: relative;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-content h3 {
    font-size: 2.8rem;
    color: #2F80ED;
    margin-bottom: 2.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(47, 128, 237, 0.2);
    padding-bottom: 1rem;
}

.modal-buttons {
    display: flex;
    justify-content: flex-end; /* Align buttons to the right */
    gap: 1.5rem;
    margin-top: 2.5rem;
}
.modal-buttons .btn {
    min-width: 120px;
}


/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 55%; /* Adjust base font size for smaller screens */
    }

    .app-container {
        border-radius: 1rem;
        padding: 1rem;
    }

    .login-card, .card {
        padding: 3rem 2rem;
    }

    .login-card h2, .card h2 {
        font-size: 2.8rem;
    }

    .dashboard-header {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem 2rem;
    }

    .dashboard-header h2 {
        font-size: 2.4rem;
        margin-bottom: 1rem;
    }

    .dashboard-nav {
        justify-content: center;
        width: 100%;
    }

    .dashboard-nav .nav-item {
        flex: 1 1 auto; /* Allow items to grow/shrink */
        text-align: center;
        margin: 0.5rem 0.5rem;
    }

    .dashboard-content {
        padding: 1.5rem 2rem;
    }

    .tab-content {
        padding: 2rem;
    }

    .tab-content h3 {
        font-size: 2rem;
    }

    .action-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .action-buttons .btn {
        width: 100%;
        margin-bottom: 1rem;
    }

    .data-table {
        overflow-x: auto; /* Enable horizontal scroll for tables on small screens */
    }

    .table-header,
    .table-row {
        min-width: 700px; /* Ensure table content doesn't completely collapse */
        flex-wrap: nowrap; /* Keep items in one line to allow scrolling */
        padding: 1rem 1.5rem;
        font-size: 1.3rem;
    }

    .table-header span,
    .table-row span {
        flex: 1; /* Reset flex-basis for table cells on mobile, let min-width handle it */
        min-width: 80px; /* Default minimum width for columns */
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    /* Specific width adjustments for smaller screens */
    #warden-students .table-header span:nth-child(1), #warden-students .table-row span:nth-child(1) { min-width: 90px; } /* Username */
    #warden-students .table-header span:nth-child(2), #warden-students .table-row span:nth-child(2) { min-width: 120px; } /* Name */
    #warden-students .table-header span:nth-child(6), #warden-students .table-row span:nth-child(6) { min-width: 150px; } /* Email */
    #warden-students .table-header span:nth-child(8), #warden-students .table-row span:nth-child(8) { min-width: 200px; } /* Address */


    .list-item {
        font-size: 1.4rem;
        padding: 1rem 1.5rem;
    }

    .modal-content {
        padding: 2rem;
    }
    .modal-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    body {
        padding: 1rem;
    }

    .app-container {
        min-height: 95vh;
    }

    .login-card, .card {
        padding: 2.5rem 1.5rem;
    }

    .login-card h2, .card h2 {
        font-size: 2.4rem;
    }

    .input-group input, .input-group select, .input-group textarea {
        font-size: 1.6rem;
        padding: 1.2rem;
    }

    .btn {
        font-size: 1.8rem;
        padding: 1.2rem 2rem;
    }

    .dashboard-header h2 {
        font-size: 2rem;
    }

    .dashboard-nav .nav-item {
        font-size: 1.3rem;
        padding: 0.7rem 1rem;
    }

    .dashboard-content {
        padding: 1rem 1.5rem;
    }

    .tab-content {
        padding: 1.5rem;
    }

    .tab-content h3 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .profile-details p {
        font-size: 1.6rem;
    }
}