/* Headings & Buttons */
h3.text-center i {
    padding: 10px;
    color: #fff;
    border-radius: 10px;
    vertical-align: middle;
}

/* Specific heading icon backgrounds */
h3.title i { background:#417dc1; } /* account.php */


.main-action-button { /* index.php */
    margin-top: 20px;
}
.main-color {
    color: #417dc1;
}
    /* Lesson Page Styles (lesson.php) */
    .level-header {
        padding: 20px 15px;
        margin-top: 15px;
        margin-bottom:30px;
        font-size: 1.4em;
        font-weight: bold;
        border: 5px solid #417dc1;
        border-radius:15px;
        box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    }
    .table-header
    {
        background-color: #417dc1 !important;
        color:#fff !important;
    }
    .lesson-locked .fas.fa-lock {
        margin-left: 5px;
    }
    .kolka-tlo {
        width: 100%;
        background-color: white; /* tło bazowe */
        background-image:
                radial-gradient(circle at 20% 30%, #417dc1 20px, transparent 21px),
                radial-gradient(circle at 50% 50%, #417dc1 30px, transparent 31px),
                radial-gradient(circle at 80% 20%, #417dc1 23px, transparent 24px),
                radial-gradient(circle at 70% 80%, #417dc1 28px, transparent 29px);
        background-repeat: no-repeat;
        background-size: cover;
    }

    .login-info
    {
        background-color: #417dc1;
        min-height: 610px;
    }
    .login
    {
        border-right: 10px solid #417dc1;
    }
    .login-panel .login h3
    {
        color: #417dc1;
    }
    /* .collapsible-header defined above */

    .score { /* progress.php specific? */
        float: right;
        font-weight: bold;
        color: #4caf50; /* green */
    }

    .no-score { /* progress.php specific? */
        float: right;
        color: #9e9e9e; /* grey */
    }
    .card h5
    {
        background-color: #417dc1;
        color: #fff;
    }
    .category-summary {
        border: 1px solid #004085;
        border-radius: 10px;
        padding:10px;
        font-size: 0.9rem;
        color: #9e9e9e; /* grey darken-1 */
        margin-left:20px;
        background-color: rgba(0,0,0,0.05);
    }

    .lesson-item { /* progress.php */
        padding: 10px 15px;
        border-bottom: 1px solid #e0e0e0;
    }

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

    .lesson-name { /* progress.php */
        font-weight: 500;
    }

    .lesson-score { /* progress.php */
        float: right;
        font-weight: bold;
        color: #1e88e5; /* blue darken-1 */
    }
    /* Account, Forgot Password, Reset Password Styles */
    .message {
        padding: 10px;
        margin-top: 15px;
        border-radius: 4px;
    }

    .alert-success {
        background-color: #d4edda;
        color: #155724;
        border: 1px solid #c3e6cb;
    }

    .alert-danger {
        background-color: #f8d7da;
        color: #721c24;
        border: 1px solid #f5c6cb;
    }

    .message.info { /* From forgot_password.php */
        background-color: #cce5ff;
        color: #004085;
        border: 1px solid #b8daff;
    }


    #sidebar {
        min-width: 220px;
        min-height: 100vh;
        height: 100%;
        color: #fff;
        background: #fff;
        z-index: 100; /* Ensure it's above other content */
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); /* Optional shadow */
    }

    #sidebar .nav-link {
        color: #000;
        padding: 0.75rem 1rem;
        transition: all 0.3s;
    }

    #sidebar .nav-link:hover {
        background: #f8f9fa;
        color: #417dc1;
    }

    #sidebar .nav-link i {
        margin-right: 0.5rem;
    }

    #sidebar .nav-link.active {
        background-color: rgba(0,0,0,0.05);
        color: #417dc1;
    }

    #sidebar .btn-danger {
        color: #fff;
    }

    #sidebar .btn-danger:hover {
        background-color: #c82333;
        border-color: #bd2130;
    }
    /* Headings */
    h3.text-center {
        color: #343a40;
        font-weight: 600;
    }

    .text-muted {
        color: #6c757d !important;
    }

    /* Accordion */
    .accordion-item {
        border: none;
        border-radius: 8px;
        margin-bottom: 1rem;
        background-color: #ffffff;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .accordion-button {
        font-size: 1.25rem;
        font-weight: 500;
        color: #6c757d;
        border-radius: 8px !important;
        border: 1px solid rgba(0, 0, 0, 0.09);
    }
    .accordion-button:hover
    {
        color:#417dc1;
    }
    .accordion-button:not(.collapsed) {
        color: #ffffff;
        background-color: #417dc1;
        box-shadow: none;
    }

    .accordion-button:focus {
        box-shadow: none;
    }

    .accordion-body {
        background-color: #ffffff;
        padding: 1.5rem;
    }
    .accordion-button:not(.collapsed) i {
        background: #fff;
        color: #417dc1;
    }
    .accordion-button:not(.collapsed) .category-summary {
        background-color: rgba(255,255,255,0.2);
        color:#fff;
    }
    /* Progress info */
    .progress-info {
        font-size: 0.85rem;
        font-weight: normal;
        color: #ccc;
    }
    .collapsed .progress-info
    {
        color: #666;;
    }
    /* List group for lessons */
    .list-group-item {
        border: none;
        padding: 0.75rem 1.25rem;
        background-color: transparent;
        transition: background-color 0.2s;
    }

    .list-group-item:hover {
        background-color: #f1f3f5;
    }

    .list-group-item a {
        color: #6c757d;
        font-weight: 500;
    }

    .list-group-item a:hover {
        color: #417dc1;
    }

    /* Locked lessons */
    .text-muted .fa-lock {
        font-size: 0.9rem;
        color: #adb5bd;
    }
    .accordion-header button i
    {
        border: 2px solid #417dc1;
        border-radius: 50%;
        padding: 10px;
    }
    .accordion-header button:hover i
    {
        background: #417dc1;
        color: #fff;
    }
    .login h3 i
    {
        border: 2px solid #417dc1;
        color: #417dc1;
    }
    /* Responsive adjustments */
    @media (max-width: 768px) {
        .accordion-button {
            font-size: 1.1rem;
        }

        .progress-info {
            display: block;
            margin-top: 0.5rem;
            margin-left: 0;
        }

        main {
            padding: 1rem;
        }
    }

    @media (min-width: 1200px) {
        #carouselExampleIndicators
        {
            margin-top: 120px;
        }
        .login
        {
            padding-top: 120px;
        }
    }