/* Base styles */
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
}

.hidden {
    display: none !important;
}

/* Login styles */
.login-container {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f5f5f5;
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

/* Header styles */
.header {
    background: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

/* Dashboard styles */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.student-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 0;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Progress bar styles */
.progress-container {
    background: #f0f0f0;
    border-radius: 10px;
    height: 20px;
    margin: 10px 0;
}

.progress-bar {
    background: #4CAF50;
    height: 100%;
    border-radius: 10px;
    transition: width 0.3s ease;
}

/* Achievement styles */
.achievement-badge {
    display: inline-block;
    font-size: 24px;
    margin: 5px;
    padding: 10px;
    border-radius: 50%;
    position: relative;
    cursor: pointer;
}

.badge-unlocked {
    background: #e8f5e9;
}

.badge-locked {
    background: #f5f5f5;
    opacity: 0.5;
}

/* Tooltip styles */
.tooltip {
    position: relative;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: #333;
    color: white;
    text-align: center;
    padding: 5px;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    white-space: nowrap;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
}

/* Assessment chart styles */
.assessment-chart {
    display: flex;
    align-items: flex-end;
    height: 200px;
    gap: 10px;
    margin-top: 20px;
}

.assessment-bar {
    background: #2196F3;
    width: 30px;
    margin: 0 auto;
    transition: height 0.3s ease;
}

.assessment-label {
    margin-top: 10px;
    font-size: 12px;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    background: white;
    margin: 1% auto;
    padding: 20px;
    width: 80%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 8px;
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 24px;
    cursor: pointer;
}

/* Form styles */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

/* Button styles */
button {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background: #4CAF50;
    color: white;
    cursor: pointer;
    font-size: 14px;
}

button:hover {
    background: #45a049;
}

#logoutBtn {
    background: #f44336;
}

#logoutBtn:hover {
    background: #d32f2f;
}

select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    min-width: 200px;
}