.bt-form {
    max-width: 600px;
    margin: 2rem auto;
    padding: 2.5rem;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
}

.bt-form .form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.bt-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: #444;
    transition: all 0.2s ease;
}

.bt-form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    transition: all 0.3s;
    background-color: #ffffff !important;
    color: #333;
    box-sizing: border-box;
}

.bt-form-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
    background-color: #fff;
}

.bt-form-input:hover {
    border-color: #ccc;
}

.bt-form-submit {
    width: 100%;
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.9rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 5px rgba(52, 152, 219, 0.2);
}

.bt-form-submit:hover {
    width: 100%;
    color: white;
    border: none;
    padding: 0.9rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background-color: #2980b9 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

.bt-form-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(52, 152, 219, 0.2);
}

#bt-form-message {
    margin-bottom: 1.5rem;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.bt-form-success {
    background-color: #e8f7f0;
    color: #27ae60;
    border-left: 4px solid #27ae60;
    padding: 1rem;
    border-radius: 6px;
}

.bt-form-error {
    background-color: #fdf2f2;
    color: #e74c3c;
    border-left: 4px solid #e74c3c;
    padding: 1rem;
    border-radius: 6px;
}

.bt-form-input::placeholder {
    color: #aaa;
    opacity: 1;
}

.bt-form label[for="name"]::after,
.bt-form label[for="telegram"]::after {
    content: " *";
    color: #e74c3c;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bt-form-success, 
.bt-form-error {
    animation: fadeIn 0.3s ease-out;
}

.bt-form-input:focus + label {
    color: #3498db;
}

.wp-list-table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    margin-top: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.wp-list-table th {
    background-color: #f8f9fa;
    color: #444;
    font-weight: 600;
    text-align: left;
    padding: 1rem;
    border-bottom: 2px solid #e0e0e0;
}

.wp-list-table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid #f0f0f0;
    color: #555;
}

.wp-list-table tr:last-child td {
    border-bottom: none;
}

.wp-list-table tr:hover td {
    background-color: #f9fafb;
}

.button#export-csv {
    background-color: #27ae60;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    margin-top: 1rem;
}

.button#export-csv:hover {
    background-color: #219653;
}

/* Validation */

.validation-message {
    color: #e74c3c;
    font-size: 0.8rem;
    margin-top: 5px;
    display: none;
    animation: fadeIn 0.2s ease-out;
}

.bt-form-input.error-input {
    border-color: #e74c3c;
    background-color: #fff;
}

.bt-form-input.error-input:focus {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.error-input:not(:focus) {
    animation: shake 0.4s ease-in-out;
}


/* Mobile Responsiveness */
@media (max-width: 768px) {
    .bt-form {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .bt-form-input {
        padding: 0.7rem;
    }
    
    .wp-list-table th, 
    .wp-list-table td {
        padding: 0.6rem;
    }
}