:root {
    --color-up: #2fcc66;
    --color-down: #b42027;
    --color-none: #e5e7eb;
    --color-banner-up: #2fcc66;
    --color-banner-down: #b42027;
    --color-text: #2a2a2a;
    --color-text-muted: #6b6b6b;
    --color-text-soft: #999999;
    --color-card-border: #ececec;
    --color-bg: #ffffff;
    --color-bg-soft: #f7f7f7;
    --color-accent: #b42027;
    --color-accent-dark: #8a181d;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.03), 0 6px 18px rgba(0, 0, 0, 0.04);
    --radius: 4px;
    --bar-width: 4px;
    --bar-height: 34px;
    --bar-gap: 2px;

    --font-body: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-display: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main { display: block; }

.site-header {
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid var(--color-card-border);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}
.site-header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 18px 24px;
    display: flex;
    align-items: center;
}
.site-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
    letter-spacing: 0.01em;
    color: var(--color-text);
    border-left: 3px solid var(--color-accent);
    padding-left: 12px;
    line-height: 1.2;
}

@media (max-width: 480px) {
    .site-header-inner { padding: 14px 16px; }
    .site-title { font-size: 15px; padding-left: 10px; }
}

.banner {
    width: 100%;
    color: #ffffff;
    padding: 28px 24px;
}
.banner-inner {
    max-width: 960px;
    margin: 0 auto;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.01em;
}
.banner-up { background: var(--color-banner-up); }
.banner-down { background: var(--color-banner-down); }

.page {
    max-width: 960px;
    margin: 0 auto;
    padding: 36px 24px 64px;
}

.page-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 22px;
    color: var(--color-text-muted);
    font-size: 13px;
}
.toolbar-text { font-family: var(--font-body); }

.range-tabs {
    display: inline-flex;
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-bg);
}
.range-tab {
    background: transparent;
    border: 0;
    padding: 6px 14px;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    border-right: 1px solid var(--color-card-border);
    letter-spacing: 0.02em;
}
.range-tab:last-child { border-right: 0; }
.range-tab:hover { background: var(--color-bg-soft); color: var(--color-text); }
.range-tab.is-active {
    background: var(--color-accent);
    color: #ffffff;
}
.range-tab.is-active:hover { background: var(--color-accent-dark); color: #ffffff; }

.monitors { display: grid; gap: 16px; }

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 20px 22px;
}
.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.card-title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.monitor-name {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 16px;
    color: var(--color-text);
}
.info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-bg-soft);
    color: var(--color-text-muted);
    font-size: 11px;
    font-weight: 700;
    cursor: help;
    border: 1px solid var(--color-card-border);
}

.status-label {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.02em;
}
.label-up { color: var(--color-up); }
.label-down { color: var(--color-down); }
.label-unknown { color: var(--color-text-soft); }

.bars {
    display: flex;
    gap: var(--bar-gap);
    height: var(--bar-height);
    align-items: stretch;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 2px;
}
.bar {
    flex: 0 0 var(--bar-width);
    height: var(--bar-height);
    border-radius: 1px;
}
.bar-up    { background: var(--color-up); }
.bar-down  { background: var(--color-down); }
.bar-none  { background: var(--color-none); }

.card-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    color: var(--color-text-muted);
    font-size: 12px;
}
.foot-center { font-size: 13px; color: var(--color-text); }
.uptime-pct {
    font-family: var(--font-display);
    font-weight: 500;
}

.empty {
    color: var(--color-text-muted);
    background: var(--color-bg-soft);
    padding: 24px;
    border-radius: var(--radius);
    text-align: center;
}
.empty code {
    background: #ffffff;
    border: 1px solid var(--color-card-border);
    padding: 1px 5px;
    border-radius: 3px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (max-width: 480px) {
    :root { --bar-width: 2px; --bar-gap: 1px; }
    .page { padding: 22px 14px 48px; }
    .banner { padding: 20px 16px; }
    .banner-inner { font-size: 17px; }
    .page-toolbar { font-size: 12px; }
    .card-foot { font-size: 11px; }
}