/* ============================================================
   网站续费提醒系统 - 界面样式
   风格：参考 AllinSSL 现代管理后台（浅色主题 + 左侧侧边栏）
   ============================================================ */

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-soft: #eff6ff;
    --bg: #f5f7fa;
    --card: #ffffff;
    --border: #e5e7eb;
    --border-light: #eef1f4;
    --text: #1f2937;
    --text-2: #4b5563;
    --muted: #9ca3af;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(16, 24, 40, .06);
    --shadow-lg: 0 12px 32px rgba(16, 24, 40, .12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: none; }

/* ============ 布局：左侧侧边栏 + 内容区 ============ */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 224px;
    flex-shrink: 0;
    background: var(--card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}
.sidebar-brand {
    display: flex; align-items: center; gap: 10px;
    padding: 18px 16px;
    border-bottom: 1px solid var(--border-light);
}
.brand-logo {
    width: 34px; height: 34px; flex-shrink: 0;
    border-radius: 9px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 17px;
}
.brand-text { font-size: 16px; font-weight: 700; }
.sidebar-nav {
    padding: 14px 12px;
    display: flex; flex-direction: column; gap: 4px;
    flex: 1; overflow-y: auto;
}
.nav-item {
    display: block; padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--text-2); font-size: 14px;
    transition: background .15s, color .15s;
}
.nav-item:hover { background: #f3f4f6; color: var(--text); }
.nav-item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.sidebar-footer { padding: 12px; border-top: 1px solid var(--border-light); }

.content { flex: 1; padding: 24px; min-width: 0; }

@media (max-width: 860px) {
    .layout { flex-direction: column; }
    .sidebar { width: 100%; height: auto; position: static; }
    .sidebar-nav { flex-direction: row; overflow-x: auto; }
    .sidebar-footer { display: none; }
    .content { padding: 16px; }
}

/* ============ 页头 ============ */
.page-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 18px; gap: 12px;
}
.page-head h2 { font-size: 19px; font-weight: 700; }
.page-actions { display: flex; gap: 8px; }

/* ============ 卡片 ============ */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.table-card { padding: 0; overflow-x: auto; }
.table-card table { margin: 0; }

/* ============ 统计卡片 ============ */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: 10px;
    padding: 18px 20px;
    box-shadow: var(--shadow);
}
.stat-card.warn { border-left-color: var(--warning); }
.stat-card.danger { border-left-color: var(--danger); }
.stat-card.muted { border-left-color: var(--muted); }
.stat-num { font-size: 28px; font-weight: 700; line-height: 1.2; }
.stat-card.warn .stat-num { color: var(--warning); }
.stat-card.danger .stat-num { color: var(--danger); }
.stat-card.muted .stat-num { color: var(--text-2); }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 2px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 860px) {
    .grid-2 { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row.two, .form-row.three { grid-template-columns: 1fr !important; }
}

/* ============ 表格 ============ */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 11px 14px; border-bottom: 1px solid var(--border-light); text-align: left; vertical-align: middle; }
thead th { background: #f8fafc; color: #475569; font-weight: 600; font-size: 13px; white-space: nowrap; }
tbody tr:hover { background: #f8fafc; }
tbody tr:last-child td { border-bottom: none; }
.ta-r { text-align: right; }
.nowrap { white-space: nowrap; }
.muted { color: var(--muted); font-size: 12px; }
.empty { text-align: center; color: var(--muted); padding: 30px 0 !important; }

/* ============ 徽标 ============ */
.badge {
    display: inline-block; padding: 2px 10px; border-radius: 999px;
    font-size: 12px; white-space: nowrap;
}
.badge-success { background: #dcfce7; color: #15803d; }
.badge-warning { background: #fef3c7; color: #b45309; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
.badge-paused { background: #e5e7eb; color: #6b7280; }

/* ============ 按钮 ============ */
.btn {
    display: inline-block; padding: 8px 16px;
    border: 1px solid #d1d5db; border-radius: var(--radius);
    background: #fff; color: #374151;
    cursor: pointer; font-size: 14px; line-height: 1.4;
    transition: all .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; border-color: #15803d; color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; color: #fff; }
.btn-warn { background: #fff; border-color: #f59e0b; color: #b45309; }
.btn-warn:hover { background: #fffbeb; border-color: #f59e0b; color: #b45309; }
.btn-sm { padding: 4px 10px; font-size: 13px; border-radius: 6px; }
.btn-block { display: block; width: 100%; padding: 11px; font-size: 15px; }

/* ============ 表单 ============ */
form label { display: block; color: var(--text-2); font-size: 13px; margin-bottom: 4px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date],
select, textarea {
    width: 100%; padding: 8px 10px;
    border: 1px solid #d1d5db; border-radius: var(--radius);
    font-size: 14px; font-family: inherit; background: #fff; color: var(--text);
    transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
textarea { resize: vertical; }
.form-row { margin-bottom: 14px; }
.form-row.two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row.three { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; }
.req { color: var(--danger); }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.checkbox-label input { width: auto; }
.block-label { margin-bottom: 14px; }
.block-label input { margin-top: 6px; padding: 10px 12px; font-size: 15px; }

/* ============ 提示 ============ */
.alert { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* ============ 筛选条 / 分页 ============ */
.filter-bar { display: flex; gap: 8px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.filter-bar input[type=text] { width: 260px; max-width: 100%; }
.filter-bar select { width: auto; }
.inline-form { display: inline-block; margin-left: 6px; }
.pager { padding: 14px; text-align: center; border-top: 1px solid var(--border-light); }
.pager a, .pager-cur {
    display: inline-block; min-width: 32px; padding: 4px 8px; margin: 0 3px;
    border: 1px solid #d1d5db; border-radius: 6px; text-align: center; color: var(--text-2);
}
.pager a:hover { border-color: var(--primary); color: var(--primary); }
.pager-cur { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ============ 其它 ============ */
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 18px 0; }
.code {
    background: #0f172a; color: #e2e8f0; padding: 12px 14px;
    border-radius: var(--radius); font-family: Consolas, Monaco, monospace;
    font-size: 13px; margin: 8px 0; overflow-x: auto;
}
.info-box {
    background: var(--primary-soft); border: 1px solid #bfdbfe;
    color: #1e40af; padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px;
}

/* ============ 登录页 ============ */
.login-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #eef2ff 0%, #e0f2fe 100%);
}
.login-card {
    width: 380px; max-width: 92%;
    background: #fff; border: 1px solid var(--border);
    border-radius: 14px; padding: 36px 32px;
    box-shadow: var(--shadow-lg);
}
.login-card h1 { font-size: 20px; text-align: center; }
.login-card .sub { text-align: center; color: var(--muted); margin: 6px 0 20px; }

/* ============ 安装页 ============ */
.install-wrap { display: flex; justify-content: center; padding: 40px 16px; }
.install-card {
    width: 640px; max-width: 100%;
    background: #fff; border: 1px solid var(--border);
    border-radius: 14px; padding: 32px;
    box-shadow: var(--shadow-lg);
}
.install-card h1 { font-size: 22px; }
.install-card .sub { color: var(--muted); margin: 6px 0 20px; }
fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; margin-bottom: 20px; }
legend { padding: 0 8px; font-weight: 600; color: var(--text-2); font-size: 14px; }