:root {
    --primary: #4f6ef7;
    --primary-hover: #3b5de7;
    --danger: #e74c3c;
    --danger-hover: #c0392b;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-secondary: #7f8c8d;
    --border: #e1e8ef;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding: 24px 16px;
    min-height: 100vh;
}

/* 登录页 */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.login-container { width: 100%; max-width: 420px; padding: 16px; }
.login-card {
    background: var(--card-bg); border-radius: var(--radius);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15); padding: 40px 32px; text-align: center;
}
.login-icon { color: var(--primary); margin-bottom: 16px; }
.login-card h1 { font-size: 24px; margin-bottom: 8px; }
.login-subtitle { color: var(--text-secondary); margin-bottom: 24px; }
.input-group { display: flex; flex-direction: column; gap: 16px; }
.input-group input {
    width: 100%; padding: 12px 16px; border: 1px solid var(--border);
    border-radius: 8px; font-size: 15px; outline: none;
}
.input-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,110,247,0.15); }
.btn-block { justify-content: center; width: 100%; }
.error-message { color: var(--danger); font-size: 14px; margin-top: 12px; min-height: 20px; }

/* 管理主容器 */
.container { max-width: 1600px; margin: 0 auto; }
.header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px; flex-wrap: wrap; gap: 12px;
}
.header-left { display: flex; align-items: center; gap: 12px; }
.header-icon { width: 32px; height: 32px; color: var(--primary); }
.header-right { display: flex; align-items: center; gap: 12px; }
.domain-count {
    background: var(--card-bg); padding: 6px 16px; border-radius: 20px;
    font-size: 14px; color: var(--text-secondary); border: 1px solid var(--border);
}

.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 20px; border-radius: 30px; font-size: 14px; font-weight: 500;
    border: none; cursor: pointer; transition: 0.2s; white-space: nowrap;
}
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 4px 12px rgba(79,110,247,0.3); }
.btn-secondary { background: #ecf0f1; color: var(--text); }
.btn-secondary:hover { background: #dde4e6; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }

.toolbar { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.search-box { position: relative; flex: 1; min-width: 220px; }
.search-icon {
    position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
    width: 18px; height: 18px; color: var(--text-secondary); pointer-events: none;
}
.search-box input {
    width: 100%; padding: 10px 40px 10px 42px; border: 1px solid var(--border);
    border-radius: 30px; font-size: 14px; background: var(--card-bg); outline: none;
}
.search-box input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,110,247,0.15); }
.clear-search {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--text-secondary); cursor: pointer;
    padding: 4px; display: flex;
}

.table-wrapper {
    background: var(--card-bg); border-radius: var(--radius);
    box-shadow: var(--shadow); overflow-x: auto;
}
.domain-table { width: 100%; border-collapse: collapse; font-size: 14px; table-layout: fixed; }
.domain-table thead { background: #f8fafc; }
.domain-table th {
    padding: 12px 8px; text-align: left; font-weight: 600; font-size: 13px;
    color: var(--text-secondary); border-bottom: 1px solid var(--border); text-transform: uppercase;
}
.domain-table td { padding: 10px 8px; border-bottom: 1px solid var(--border); word-break: break-word; vertical-align: middle; }
.domain-table tbody tr:hover { background: #f8fafc; }

/* 列宽 */
.col-provider { width: 5%; }
.col-url { width: 10%; }
.col-account { width: 8%; }
.col-password { width: 7%; }
.col-domain { width: 8%; }
.col-date { width: 6%; }
.col-rule { width: 10%; }
.col-purpose { width: 6%; }
.col-remark { width: 10%; }
.col-actions { width: 4%; }

/* 到期标签样式 */
.expiry-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
}
.expiry-tag.permanent {
    background: #fef3c7;
    color: #b45309;
}
.expiry-tag.safe {
    background: #d1fae5;
    color: #065f46;
}
.expiry-tag.warning {
    background: #fee2e2;
    color: #b91c1c;
}
.expiry-tag.danger {
    background: #f3f4f6;
    color: #6b7280;
}

.provider-url { color: var(--primary); text-decoration: none; }
.provider-url:hover { text-decoration: underline; }

.password-cell { display: flex; align-items: center; gap: 4px; }
.password-toggle { background: none; border: none; cursor: pointer; color: var(--text-secondary); font-size: 12px; text-decoration: underline; }

.actions { display: flex; gap: 4px; }
.icon-btn {
    background: none; border: none; cursor: pointer; padding: 4px;
    border-radius: 6px; color: var(--text-secondary); display: flex;
    transition: background 0.2s;
}
.icon-btn:hover { background: #edf2f7; color: var(--text); }
.icon-btn.delete:hover { background: #fdeaea; color: var(--danger); }

.empty-state {
    padding: 60px 20px; text-align: center; color: var(--text-secondary);
    display: none; flex-direction: column; align-items: center; gap: 12px;
}

/* 模态框 */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center;
    z-index: 100; opacity: 0; visibility: hidden; transition: 0.25s;
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
    background: var(--card-bg); border-radius: var(--radius);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2); width: 90%; max-width: 800px;
    max-height: 90vh; display: flex; flex-direction: column;
}
.modal-sm { max-width: 420px; }
.modal-lg { max-width: 800px; }
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px 0;
}
.modal-header h2 { font-size: 20px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-secondary); cursor: pointer; padding: 4px; border-radius: 6px; }
.modal-close:hover { background: #edf2f7; }
.modal-body { padding: 20px 24px 24px; overflow-y: auto; }

.form-group { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.form-row-2, .form-row-3 { display: grid; gap: 16px; margin-bottom: 16px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-group label { font-size: 14px; font-weight: 500; }
.required { color: var(--danger); }
.form-group input, .form-group textarea {
    padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; font-family: inherit; outline: none; transition: 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,110,247,0.15);
}
textarea { resize: vertical; }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; margin-top: 8px; }

.toast {
    position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: #2c3e50; color: #fff; padding: 12px 24px; border-radius: 30px;
    font-size: 14px; box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    opacity: 0; transition: 0.3s; z-index: 200; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 768px) {
    .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
    .domain-table { font-size: 13px; }
}

.switch-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    display: inline-block;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.frequency-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.form-select {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: white;
    outline: none;
    transition: border-color 0.2s;
    min-width: 100px;
}

.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.15);
}

.form-number {
    width: 70px;
    padding: 10px 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
}

.form-number:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.15);
}
/* 频率行并排样式 */
.frequency-line {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.frequency-label {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}