body {
    background-color: #f5e6d3;
    font-family: Arial, sans-serif;
    min-height: 100vh;
}

/* h1 {
            font-family: "Footlight MT", "Times New Roman", serif;
        } */

/* Header */
.header {
    background-color: #f5e6d3;
    padding: 1rem;
    text-align: center;
    border-bottom: 2px solid #8db38d;
}

.header-title {
    font-family: "Footlight MT", "Times New Roman", serif;
    font-size: 1.5rem;
    color: #2c2c2c;
    margin: 0;
    font-weight: normal;
}

/* Custom Navigation */
.custom-navbar {
    background-color: #8db38d;
    padding: 0;
}

.nav-link#nav-tab {
    color: white !important;
    font-weight: bold;
    font-size: 1.125rem;
    padding: 1rem 2rem !important;
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, 0.3);
    transition: background-color 0.3s ease;
}

.nav-link#nav-tab:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white !important;
}

.nav-item:last-child .nav-link {
    border-right: none;
}

/* Sidebar */
.sidebar {
    background-color: #a8d4a8;
    min-height: 100%;
    padding: 2rem 1.5rem;
}

.lesson-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c2c2c;
    margin-bottom: 1.5rem;
}

.lesson-section {
    display: block;
    color: #d4a333;
    text-decoration: none;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(212, 163, 51, 0.3);
    transition: color 0.3s ease;
}

.lesson-section:hover {
    color: #b8921a;
}

.lesson-section.active {
    color: #b8921a;
    font-weight: bold;
}

/* Main Content */
.main-content {
    padding: 2rem;
    background-color: #f5e6d3;
    min-height: calc(100vh - 140px);
}

.content-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c2c2c;
    margin-bottom: 1.5rem;
    text-align: center;
}

.instructions {
    font-size: 1rem;
    line-height: 1.6;
    color: #444;
    margin-bottom: 2rem;
}

.riddle-list {
    font-size: 1rem;
    line-height: 1.8;
    color: #444;
    margin-bottom: 2rem;
}

.riddle-item {
    margin-bottom: 0.5rem;
}

.guide-question {
    font-size: 1rem;
    line-height: 1.6;
    color: #444;
    margin-bottom: 1.5rem;
}

.answer-space {
    background-color: white;
    border: 2px solid #8db38d;
    border-radius: 0.5rem;
    padding: 1rem;
    min-height: 120px;
    width: 100%;
    font-size: 1rem;
    resize: vertical;
}

.answer-space:focus {
    outline: none;
    border-color: #6a9f6a;
    box-shadow: 0 0 0 0.2rem rgba(141, 179, 141, 0.25);
}

#btn-green {
    background-color: #8db38d;

}

.bg-ygreen {
    background-color: #EAFFCF;
}

.dropdown-menu {
    background-color: #EAFFCF;

}

.dropdown-item:hover {
    background-color: #6a9f6a;
    color: white;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .nav-link {
        font-size: 1rem;
        padding: 0.875rem 1rem !important;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    }

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

    .header-title {
        font-size: 1.2rem;
    }

    .sidebar {
        min-height: auto;
        padding: 1.5rem 1rem;
    }

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

    .lesson-title {
        font-size: 1.3rem;
    }

    .content-title {
        font-size: 1.3rem;
    }
}