:root {
    --primary-color: #128C7E;
    --secondary-color: #25D366;
    --dark-color: #075E54;
    --light-color: #dcf8c6;
    --card-bg: rgba(255, 255, 255, 0.95);
}

body {
    background: linear-gradient(135deg, var(--dark-color), var(--primary-color), var(--secondary-color));
    min-height: 100vh;
    padding: 20px;
    color: #333;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: none;
    overflow: hidden;
    background: var(--card-bg);
    transition: transform 0.3s ease;
    margin-bottom: 25px;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
    color: white;
    padding: 15px 20px;
    border-bottom: none;
}

.btn-success {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    padding: 12px 30px;
    font-weight: bold;
    transition: all 0.3s;
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.phone-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 12px 15px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    border-left: 4px solid var(--secondary-color);
}

.phone-item i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.2rem;
}

.short-link {
    background: linear-gradient(to right, #f8f9fa, #e9ecef);
    border-radius: 8px;
    padding: 15px;
    margin-top: 20px;
    font-size: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px dashed var(--secondary-color);
}

.copy-btn {
    cursor: pointer;
    transition: all 0.3s;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.copy-btn:hover {
    transform: scale(1.1);
    color: var(--dark-color);
}

.footer {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 40px;
    padding: 20px;
    font-size: 0.9rem;
}

.phone-list {
    max-height: 300px;
    overflow-y: auto;
    padding-right: 10px;
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(37, 211, 102, 0.25);
}

.example-box {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 15px;
    color: white;
    margin-top: 15px;
}

.table-success th {
    background-color: var(--primary-color);
    color: white;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeeba;
    color: #856404;
}

.toast {
    opacity: 1 !important;
}
.captcha-img {
    height: 38px;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
    margin-left: 5px;
}

.input-group .captcha-img {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}