:root {
    --bg: #f4f5f7;
    --card: #ffffff;
    --text: #1f2430;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --hot: #dc2626;
    --cold: #6b7280;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

h1 { font-size: 22px; margin: 0 0 20px; }
h2 { font-size: 17px; margin: 28px 0 12px; color: var(--muted); }

.topnav {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 14px 24px;
}
.topnav .brand { font-weight: 700; margin-left: auto; }
.topnav a { color: var(--text); text-decoration: none; padding: 6px 4px; }
.topnav a:hover { color: var(--primary); }
.topnav a.logout { color: var(--hot); }

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.stat-card.highlight { border-color: var(--primary); }
.stat-value { font-size: 26px; font-weight: 700; }

.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--border); border-radius: 10px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
.data-table th, .data-table td { padding: 10px 14px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table td.muted { color: var(--muted); white-space: normal; max-width: 260px; }
.data-table .empty { text-align: center; color: var(--muted); padding: 28px; }
.data-table th { background: #fafafa; font-weight: 600; color: var(--muted); }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; color: #fff; }
.badge-hot { background: var(--hot); }
.badge-cold { background: var(--cold); }

.filters { margin-bottom: 14px; display: flex; gap: 8px; }
.filters a { padding: 6px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); color: var(--text); text-decoration: none; font-size: 13px; }
.filters a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.inline-form { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.inline-form input { padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.inline-form button { padding: 9px 16px; border: none; border-radius: 8px; background: var(--primary); color: #fff; cursor: pointer; }
.inline-form button:hover { background: var(--primary-dark); }

.link-btn { background: none; border: none; color: var(--primary); cursor: pointer; padding: 0; font-size: 13px; }

.notice { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.login-box h1 { font-size: 18px; text-align: center; }
.login-box label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.login-box input { padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.login-box button { margin-top: 6px; padding: 10px; border: none; border-radius: 8px; background: var(--primary); color: #fff; font-size: 14px; cursor: pointer; }
.login-box button:hover { background: var(--primary-dark); }
.login-box .error { color: var(--hot); font-size: 13px; margin: 0; }