.student-modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 30px;
    border: none;
    border-radius: 10px;
    width: 90%;
    max-width: 450px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    animation: slideIn 0.3s;
    direction: rtl;
    text-align: right;
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    color: #aaa;
    float: left;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover,
.close:focus {
    color: #000;
}

.modal-content h2 {
    margin-top: 0;
    color: #333;
    text-align: center;
    border-bottom: 2px solid #0073aa;
    padding-bottom: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
    box-sizing: border-box;
    direction: ltr;
    text-align: center;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: #0073aa;
    box-shadow: 0 0 5px rgba(0, 115, 170, 0.3);
}

.form-group input[type="submit"] {
    width: 100%;
    background: linear-gradient(45deg, #0073aa, #005a87);
    color: white;
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.form-group input[type="submit"]:hover {
    background: linear-gradient(45deg, #005a87, #004066);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

#captcha-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    justify-content: center;
}

#captcha-canvas {
    border: 1px solid #ddd;
    border-radius: 5px;
    background: white;
}

#refresh-captcha {
    background: #f1f1f1;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

#refresh-captcha:hover {
    background: #e0e0e0;
}

#student-login-section {
    margin: 20px 0;
    text-align: center;
}

#student-login-btn {
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(76, 175, 80, 0.3);
}

#student-login-btn:hover {
    background: linear-gradient(45deg, #45a049, #3d8b40);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
}

#login-result {
    margin-top: 15px;
    text-align: center;
}

#login-result .success {
    background: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #c3e6cb;
}

#login-result .error {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #f5c6cb;
}

#login-result .loading {
    background: #d1ecf1;
    color: #0c5460;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #bee5eb;
}

/* آیکون شناور */
.floating-login-icon {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #4CAF50, #45a049);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.4);
    transition: all 0.3s ease;
    z-index: 9998;
    animation: pulse 2s infinite;
}

.floating-login-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.6);
}

@keyframes pulse {
    0% { box-shadow: 0 4px 20px rgba(76, 175, 80, 0.4); }
    50% { box-shadow: 0 4px 20px rgba(76, 175, 80, 0.8); }
    100% { box-shadow: 0 4px 20px rgba(76, 175, 80, 0.4); }
}

.login-tooltip {
    position: absolute;
    bottom: 70px;
    right: 0;
    background: #333;
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    font-family: 'Arial', sans-serif;
}

.login-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 20px;
    border: 5px solid transparent;
    border-top-color: #333;
}

.floating-login-icon:hover .login-tooltip {
    opacity: 1;
    visibility: visible;
    bottom: 75px;
}

/* استایل‌های کد کوتاه */
.student-login-shortcode {
    text-align: center;
    margin: 20px 0;
}

.student-login-shortcode-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(76, 175, 80, 0.3);
    font-family: inherit;
}

.student-login-shortcode-btn:hover {
    background: linear-gradient(45deg, #45a049, #3d8b40);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
}

.student-login-shortcode-btn.simple-style {
    background: #0073aa;
    border-radius: 5px;
    padding: 12px 24px;
    font-size: 14px;
    box-shadow: none;
}

.student-login-shortcode-btn.simple-style:hover {
    background: #005a87;
    transform: none;
    box-shadow: 0 2px 5px rgba(0, 115, 170, 0.3);
}

.student-login-shortcode-btn.modern-style {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 30px;
    padding: 18px 36px;
    font-size: 18px;
    position: relative;
    overflow: hidden;
}

.student-login-shortcode-btn.modern-style::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.student-login-shortcode-btn.modern-style:hover::before {
    left: 100%;
}

.student-login-shortcode-btn.modern-style:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* ریسپانسیو برای آیکون شناور */
@media (max-width: 768px) {
    .floating-login-icon {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    
    .login-tooltip {
        font-size: 11px;
        padding: 6px 10px;
        bottom: 60px;
    }
    
    .student-login-shortcode-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .student-login-shortcode-btn.modern-style {
        padding: 15px 25px;
        font-size: 16px;
    }
}