/* Design tokens (Apple-like) */
:root {
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --radius-1: 10px;
  --radius-2: 14px;
  --radius-3: 18px;
  --radius-pill: 999px;

  --shadow-1: 0 1px 1px rgba(0, 0, 0, 0.12), 0 8px 24px rgba(0, 0, 0, 0.22);
  --shadow-2: 0 1px 2px rgba(0, 0, 0, 0.18), 0 18px 42px rgba(0, 0, 0, 0.32);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-1: 120ms;
  --dur-2: 180ms;

  --focus-ring: 0 0 0 4px color-mix(in srgb, var(--color-accent) 18%, transparent);

  color-scheme: dark;
}

/* Theme: dark (default) */
:root,
html[data-theme="dark"] {
  --color-bg: #0b0f19;
  --color-surface: rgba(255, 255, 255, 0.06);
  --color-surface-2: rgba(255, 255, 255, 0.085);
  --color-text: rgba(255, 255, 255, 0.92);
  --color-muted: rgba(255, 255, 255, 0.66);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-2: rgba(255, 255, 255, 0.18);
  --color-accent: #0a84ff;
  --color-accent-2: color-mix(in srgb, var(--color-accent) 22%, transparent);
  --color-danger: #ff453a;
  --color-danger-2: color-mix(in srgb, var(--color-danger) 18%, transparent);
  --page-gradient: radial-gradient(1200px 800px at 30% -10%, rgba(10, 132, 255, 0.22) 0%, var(--color-bg) 55%);

  --input-bg: rgba(0, 0, 0, 0.24);
  --input-border: var(--color-border);
}

/* Theme: light */
html[data-theme="light"] {
  --color-bg: #f5f5f7;
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-2: rgba(255, 255, 255, 0.9);
  --color-text: rgba(0, 0, 0, 0.88);
  --color-muted: rgba(0, 0, 0, 0.56);
  --color-border: rgba(0, 0, 0, 0.1);
  --color-border-2: rgba(0, 0, 0, 0.14);
  --color-accent: #007aff;
  --color-accent-2: color-mix(in srgb, var(--color-accent) 18%, transparent);
  --color-danger: #ff3b30;
  --color-danger-2: color-mix(in srgb, var(--color-danger) 16%, transparent);
  --page-gradient: radial-gradient(1200px 800px at 30% -10%, rgba(0, 122, 255, 0.18) 0%, var(--color-bg) 60%);

  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(0, 0, 0, 0.12);

  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--page-gradient);
  color: var(--color-text);
  letter-spacing: 0.01em;
}

a { color: inherit; }
.muted { color: var(--color-muted); }
pre, code { font-family: var(--font-mono); }

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

.topbar {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in srgb, var(--color-surface-2) 70%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
}
.brand { font-weight: 650; letter-spacing: 0.2px; }
.nav { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.nav a {
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  opacity: 0.86;
  transition: background var(--dur-1) var(--ease-out), opacity var(--dur-1) var(--ease-out);
}
.nav a:hover { opacity: 1; background: var(--color-surface); }
.nav a[aria-current="page"] { opacity: 1; background: var(--color-surface-2); border: 1px solid var(--color-border); }
.right { margin-left: auto; display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap; justify-content: flex-end; }

.container { max-width: 1120px; margin: var(--space-5) auto; padding: 0 var(--space-4); }
.card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  padding: var(--space-4);
  box-shadow: var(--shadow-1);
}
.card + .card { margin-top: var(--space-3); }

.row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.row-start { justify-content: flex-start; }
.row-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }

.grid { display: grid; grid-template-columns: 1fr; gap: var(--space-3); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.btn {
  appearance: none;
  border: 1px solid var(--color-border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-accent) 26%, transparent), color-mix(in srgb, var(--color-accent) 10%, transparent));
  color: var(--color-text);
  padding: 9px 12px;
  border-radius: var(--radius-1);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  line-height: 1;
  transition: transform var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out), background var(--dur-1) var(--ease-out), box-shadow var(--dur-1) var(--ease-out);
}
.btn:hover { border-color: var(--color-border-2); }
.btn:active { transform: translateY(0.5px); }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); border-color: color-mix(in srgb, var(--color-accent) 55%, var(--color-border)); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }
.btn.btn-secondary { background: var(--color-surface); }
.btn.btn-danger {
  background: linear-gradient(180deg, var(--color-danger-2), color-mix(in srgb, var(--color-danger) 6%, transparent));
  border-color: color-mix(in srgb, var(--color-danger) 28%, var(--color-border));
}
.btn.btn-danger:hover { border-color: color-mix(in srgb, var(--color-danger) 55%, var(--color-border)); }

label { display: block; margin: var(--space-3) 0; color: var(--color-muted); font-size: 12px; letter-spacing: 0.02em; }
label > input, label > select { margin-top: 6px; }
input, select, textarea {
  width: 100%;
  padding: 10px 10px;
  border-radius: var(--radius-1);
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--color-text);
}
input:focus, select:focus, textarea:focus { outline: none; box-shadow: var(--focus-ring); border-color: color-mix(in srgb, var(--color-accent) 55%, var(--input-border)); }

/* Dropdown readability */
select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 34px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--color-muted) 50%),
    linear-gradient(135deg, var(--color-muted) 50%, transparent 50%),
    linear-gradient(to right, transparent, transparent);
  background-position:
    calc(100% - 18px) 50%,
    calc(100% - 13px) 50%,
    0 0;
  background-size:
    6px 6px,
    6px 6px,
    100% 100%;
  background-repeat: no-repeat;
}

/* In dark theme, make the control less transparent for contrast */
html[data-theme="dark"] select {
  background-color: rgba(0, 0, 0, 0.34);
  border-color: var(--color-border-2);
}

/* Where supported, style option list for contrast */
select option {
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-bg) 92%, black);
}

.table { width: 100%; border-collapse: collapse; margin-top: var(--space-3); }
.table th, .table td { border-bottom: 1px solid var(--color-border); padding: 12px 10px; text-align: left; vertical-align: middle; }
.table th { color: var(--color-muted); font-weight: 650; font-size: 12px; letter-spacing: 0.02em; }
.table tr:hover td { background: color-mix(in srgb, var(--color-surface) 70%, transparent); }
.table--compact th, .table--compact td { padding: 9px 10px; }
.table td .btn { padding: 8px 10px; }

.meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); margin: var(--space-3) 0; }
.meta > div { padding: 10px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-2); background: var(--color-surface); }
.h3 { margin: var(--space-5) 0 var(--space-2); color: var(--color-muted); font-weight: 700; font-size: 13px; letter-spacing: 0.02em; }
h2 { font-size: 18px; font-weight: 700; margin: 0 0 var(--space-2); }
p { margin: 0 0 var(--space-2); line-height: 1.5; }

.kpi-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--space-3); }
.kpi {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  padding: var(--space-4);
  background: var(--color-surface);
}
.kpi-title { color: var(--color-muted); font-size: 12px; letter-spacing: 0.3px; }
.kpi-value { font-size: 30px; font-weight: 800; margin-top: 6px; }

pre { white-space: pre-wrap; word-break: break-word; }

.progress {
  height: 10px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.progress > div {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--color-accent) 85%, white), color-mix(in srgb, var(--color-accent) 35%, transparent));
}

/* Toasts */
.toasts {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  display: grid;
  gap: var(--space-2);
  z-index: 50;
  width: min(360px, calc(100vw - 2 * var(--space-4)));
}
.toast {
  background: color-mix(in srgb, var(--color-surface-2) 86%, transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  padding: 12px 12px;
  box-shadow: var(--shadow-2);
  backdrop-filter: blur(16px);
}
.toast-title { font-weight: 700; margin-bottom: 4px; }
.toast-body { color: var(--color-muted); font-size: 13px; line-height: 1.4; }
.toast.toast-danger { border-color: color-mix(in srgb, var(--color-danger) 40%, var(--color-border)); }

/* Responsive topbar */
@media (max-width: 900px) {
  .topbar { align-items: flex-start; }
  .nav { width: 100%; order: 3; }
  .right { order: 2; }
}