/* 1. Global Variables & Reset */
:root {
    --bg-green: #567257;
    --card-grey: #D9D8D5;
    --text-dark: #2A2420;
    --btn-brown: #896A58;
    --accent-sage: #ACAB9E;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body { 
    background: var(--bg-green); 
    font-family: 'Segoe UI', sans-serif; 
    min-height: 100vh;
}
.fa-graduation-cap{
    color: var(--bg-green);
}
/* 2. Header & Navigation (Fixed) */
.quiz-header {
    background: var(--card-grey) !important;
    border-bottom: 2px solid var(--accent-sage);
    padding: 10px 0;
    z-index: 1050;
    position: sticky;
    top: 0;
    width: 100%;
}



.user-avatar {
    width: 38px;
    height: 38px;
    background: white;
    border: 2px solid var(--accent-sage);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-green);
    font-size: 1.1rem;
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--btn-brown);
    color: var(--btn-brown);
    border-radius: 10px;
    padding: 6px 15px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: 0.3s;
}

.btn-logout:hover {
    background: var(--btn-brown);
    color: white;
}

/* 3. Cards & Containers */
.quiz-card, .login-card { 
    background: var(--card-grey); 
    border: none; 
    border-radius: 20px; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.2); 
    padding: 35px; 
    color: var(--text-dark);
}

/* 4. Form Elements & Radio Buttons */
.form-control { 
    border-radius: 12px; 
    padding: 12px; 
    border: 1px solid var(--accent-sage); 
    background: white;
}

.form-control:focus { 
    box-shadow: 0 0 0 4px rgba(86, 114, 87, 0.1); 
    border-color: var(--bg-green); 
}

.option-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 15px 20px;
    border: 2px solid var(--accent-sage);
    border-radius: 15px;
    margin-bottom: 12px;
    background: white;
    transition: 0.3s;
    position: relative;
}

.option-label input[type="radio"] { display: none; }

.option-label::before {
    content: "";
    width: 20px;
    height: 20px;
    border: 2px solid var(--accent-sage);
    border-radius: 50%;
    margin-right: 15px;
    display: inline-block;
    transition: 0.2s;
    background: white;
}

.option-label:hover {
    border-color: var(--btn-brown);
    background-color: #fdfaf9;
}

.option-label:has(input:checked) {
    border-color: var(--btn-brown);
    background-color: #f5f3ff;
}

.option-label:has(input:checked)::before {
    background-color: var(--btn-brown);
    border-color: var(--btn-brown);
    box-shadow: inset 0 0 0 4px white;
}

/* 5. Progress & Utility */
.progress { height: 8px; border-radius: 10px; background: rgba(0,0,0,0.1); }
.progress-bar { background: var(--btn-brown); border-radius: 10px; }

.btn-nav { border-radius: 10px; padding: 10px 25px; font-weight: 600; transition: 0.3s; }
.btn-primary { background: var(--btn-brown) !important; border: none !important; color: white !important; }
.btn-primary:hover { background: var(--text-dark) !important; transform: translateY(-2px); }

.btn-light { background: white; border: 1px solid var(--accent-sage); color: var(--text-dark); }
.btn-success { background: var(--bg-green) !important; border: none !important; color: white !important; }

.text-primary { color: var(--bg-green) !important; }
.text-secondary, .text-muted { color: var(--text-dark) !important; opacity: 0.7; }