/* ===== Base Theme (Light by default) ===== */
:root {
  --bg: #f6f7fb;
  --fg: #0f172a;
  --muted: #64748b;
  --card: #ffffff;
  --border: #e2e8f0;
  --up: #16a34a;
  --down: #dc2626;
  --warn: #d97706;
  --brand: #4f46e5;
  --brand-600: #4338ca;
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --shadow: 0 6px 20px rgba(2, 6, 23, 0.06);
  --radius: 14px;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

/* Respect OS preference by default */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --fg: #e5e7eb;
    --muted: #9ca3af;
    --card: #111827;
    --border: #1f2937;
    --input-bg: #0b1120;
    --input-border: #334155;
    --shadow: 0 8px 28px rgba(0,0,0,0.35);
  }
}

/* Explicit dark mode override via data-theme */
:root[data-theme="dark"] {
  --bg: #0b1220;
  --fg: #e5e7eb;
  --muted: #9ca3af;
  --card: #111827;
  --border: #1f2937;
  --input-bg: #0b1120;
  --input-border: #334155;
  --shadow: 0 8px 28px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container { 
  max-width: 1100px; 
  margin: 0 auto; 
  padding: 20px; 
}

/* Header */
.header {
  display: flex; 
  align-items: center; 
  justify-content: space-between;
  padding: 16px 0 12px;
}

.brand { 
  font-size: 20px; 
  font-weight: 800; 
  color: var(--fg); 
  text-decoration: none; 
  letter-spacing: 0.2px;
}

.header-actions { display:flex; align-items:center; gap: 10px; }

/* Theme toggle */
.theme-toggle {
  display:inline-flex; align-items:center; gap:8px;
  background: transparent; color: var(--fg);
  border: 1px solid var(--border);
  padding: 8px 12px; border-radius: 999px; cursor:pointer;
  font-weight: 600;
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--brand); outline-offset: 2px;
}

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card h2, .card h3 {
  margin: 0 0 10px 0;
  color: var(--fg);
  font-weight: 700;
}

/* Grid */
.grid { 
  display: grid; 
  grid-template-columns: 1fr; 
  gap: 16px; 
}
@media (min-width: 980px) {
  .grid { grid-template-columns: 2fr 1fr; }
}

/* Sidebar tweaks */
.grid > div:last-child .card {
  max-width: 380px;
  margin-left: auto;
}

/* Status badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  border: 1px solid transparent;
}
.status-dot { font-size: 14px; line-height: 1; }
.badge-up   { background: #dcfce7; color: var(--up);   border-color: #86efac; }
.badge-down { background: #fee2e2; color: var(--down); border-color: #fca5a5; }
.badge-warn { background: #fef9c3; color: #a16207;    border-color: #facc15; }

/* Subtle badge (e.g., TLS, uptime) */
.badge {
  display:inline-block;
  background: transparent;
  color: var(--muted);
  border: 1px dashed var(--border);
  padding: 3px 8px; border-radius: 999px; font-size: 12px; margin-left: 8px;
}

/* Tables -> responsive cards */
.table-wrap { width: 100%; overflow-x: auto; }
table { 
  width: 100%; 
  border-collapse: collapse; 
  font-size: 14px;
  min-width: 720px; /* keeps columns readable on small screens via horizontal scroll */
}
th, td { 
  padding: 12px 10px; 
  border-bottom: 1px solid var(--border); 
  text-align: left; 
}
th {
  font-weight: 700;
  color: var(--muted);
}

/* Mobile card list (replaces table below 680px) */
@media (max-width: 680px) {
  .table-wrap { display: none; }
  .service-list { display: grid; gap: 10px; }
  .service-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    background: var(--card);
  }
  .service-card__row1 {
    display:flex; justify-content:space-between; align-items:center; gap: 8px;
  }
  .service-card__sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
  .service-card__meta {
    display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; margin-top: 10px;
    font-size: 13px;
  }
  .service-card__kv { display:flex; gap: 6px; align-items:center; }
  .service-card__label { color: var(--muted); }
}

/* Inputs */
input, select, textarea {
  width: 100%;
  background: var(--input-bg);
  color: var(--fg);
  border: 1px solid var(--input-border);
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 10px;
  transition: border 0.2s, box-shadow 0.2s, background 0.2s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.18);
  outline: none;
}

/* Buttons */
button, .btn {
  background: var(--brand);
  color: #fff;
  border: 0;
  padding: 10px 16px;
  font-weight: 700;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.06s ease, background 0.2s ease;
}
button:hover, .btn:hover { background: var(--brand-600); }
button:active { transform: translateY(1px); }
.btn-outline {
  background: transparent; 
  color: var(--fg); 
  border: 1px solid var(--input-border);
}

/* Muted text */
small.muted { color: var(--muted); }

/* Footer */
.footer { 
  color: var(--muted); 
  text-align: center; 
  font-size: 12px; 
  padding: 28px 0 70px; 
}

/* Sparkline canvas */
.spark { width: 140px; height: 34px; }

/* Utilities */
.stack { display: grid; gap: 12px; }
.section-title { display:flex; justify-content:space-between; align-items:center; }
.visually-hidden { position:absolute !important; height:1px; width:1px; overflow:hidden; clip:rect(1px,1px,1px,1px); white-space:nowrap; border:0; padding:0; margin:-1px; }