:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --success-color: #4cc9f0;
    --info-color: #4895ef;
    --warning-color: #f72585;
    --danger-color: #7209b7;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    background-color: #f5f7fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    color: white !important;
}

.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    margin-bottom: 25px;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

.server-card, .address-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    margin-bottom: 20px;
    border: none;
}

.server-card:hover, .address-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.server-header {
    padding: 15px;
    background: linear-gradient(135deg, #4cc9f0, #4361ee);
    color: white;
    font-weight: 600;
}

.server-body {
    padding: 20px;
}

.badge-location {
    background-color: var(--success-color);
    color: white;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 20px;
}

.badge-expiry {
    background-color: var(--warning-color);
    color: white;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 20px;
}

.btn-jump, .btn-view {
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    border: none;
    border-radius: 50px;
    padding: 8px 20px;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-jump:hover, .btn-view:hover {
    background: linear-gradient(135deg, var(--info-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
    color: white;
}

.btn-copy {
    background: linear-gradient(135deg, var(--success-color), var(--info-color));
    border: none;
    border-radius: 50px;
    padding: 8px 20px;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-copy:hover {
    background: linear-gradient(135deg, var(--info-color), var(--success-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 201, 240, 0.3);
    color: white;
}

.btn-delete {
    background: linear-gradient(135deg, var(--warning-color), var(--danger-color));
    border: none;
    border-radius: 50px;
    padding: 8px 20px;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-delete:hover {
    background: linear-gradient(135deg, var(--danger-color), var(--warning-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(247, 37, 133, 0.3);
    color: white;
}

.form-control {
    border-radius: 10px;
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
    box-shadow: none;
}

.form-control:focus {
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.25);
    border-color: var(--primary-color);
}

.btn-add-server {
    background: linear-gradient(135deg, var(--success-color), var(--info-color));
    border: none;
    border-radius: 50px;
    padding: 12px 25px;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-panel {
    background: linear-gradient(135deg, #7209b7, #560bad);
    border: none;
    border-radius: 50px;
    padding: 8px 20px;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-panel:hover {
    background: linear-gradient(135deg, #560bad, #7209b7);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(114, 9, 183, 0.3);
    color: white;
}

.btn-add-server:hover {
    background: linear-gradient(135deg, var(--info-color), var(--success-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 201, 240, 0.3);
}

.server-info-item, .address-info-item {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
}

.server-info-label, .address-info-label {
    font-weight: 600;
    color: var(--dark-color);
    min-width: 100px;
}

.server-info-value, .address-info-value {
    color: #555;
    flex-grow: 1;
}

.server-actions, .address-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
}

.empty-state {
    text-align: center;
    padding: 50px 0;
}

.empty-state i {
    font-size: 5rem;
    color: #d1d1d1;
    margin-bottom: 20px;
}

.empty-state h3 {
    color: #888;
    margin-bottom: 15px;
}

.empty-state p {
    color: #aaa;
    max-width: 500px;
    margin: 0 auto;
}

.expiry-soon {
    color: var(--warning-color);
}

.expiry-expired {
    color: var(--danger-color);
}

.expiry-ok {
    color: var(--success-color);
}

.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 15px 15px 0 0 !important;
    border-bottom: none;
}

.modal-footer {
    border-top: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    border: none;
    border-radius: 50px;
    padding: 8px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--info-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
}

.btn-secondary {
    background: #e0e0e0;
    color: #555;
    border: none;
    border-radius: 50px;
    padding: 8px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}
/* 编辑按钮样式 */
.btn-edit {
    background-color: #4e73df;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-edit:hover {
    background-color: #375bd2;
    transform: translateY(-2px);
}
.btn-secondary:hover {
    background: #d0d0d0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border: none;
}

.toast-success {
    background-color: var(--success-color);
    color: white;
}

.toast-error {
    background-color: var(--danger-color);
    color: white;
}

/* 地址管理特定样式 */
.address-text {
    font-family: monospace;
    background: #f8f9fa;
    padding: 8px;
    border-radius: 6px;
    margin: 10px 0;
    word-break: break-all;
}

.usdt-amount {
    color: var(--success-color);
    font-size: 1.2em;
    font-weight: 600;
    margin: 10px 0;
    display: flex;
    align-items: center;
    gap: 5px;
}

.usdt-amount i {
    color: #ffd700;
}

.address-card .card-title {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.address-card .card-body {
    padding: 20px;
}