/* ══════════════════════════════════════════════════
   Kyudo — Design System
   GitHub-inspired component CSS
   ══════════════════════════════════════════════════ */

:root {
  --color-bg: #f6f8fa;
  --color-white: #ffffff;
  --color-border: #d1d9e0;
  --color-border-muted: #e8ecf0;
  --color-nav-bg: #24292f;
  --color-nav-text: #ffffff;
  --color-text: #1f2328;
  --color-text-secondary: #656d76;
  --color-text-tertiary: #8b949e;
  --color-link: #0969da;
  --color-green: #1a7f37;
  --color-green-bg: #dafbe1;
  --color-red: #cf222e;
  --color-red-bg: #ffebe9;
  --color-yellow: #9a6700;
  --color-yellow-bg: #fff8c5;
  --color-blue: #0969da;
  --color-blue-bg: #ddf4ff;
  --color-purple: #8250df;
  --color-purple-bg: #fbefff;
  --color-tab-active: #fd8c73;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 6px;
  --shadow-sm: 0 1px 0 rgba(27,31,36,0.04);
  --shadow-md: 0 3px 6px rgba(140,149,159,0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-stack);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Top Nav ── */

.top-nav {
  background: var(--color-nav-bg);
  height: 48px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-nav-text);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.nav-links a:hover {
  background: rgba(255,255,255,0.1);
  color: var(--color-nav-text);
}

.nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-logout {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-stack);
  padding: 4px 10px;
  border-radius: var(--radius);
  border: none;
  background: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.nav-logout:hover {
  background: rgba(255,255,255,0.1);
  color: var(--color-nav-text);
}

/* ── Main Content ── */

.main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 32px;
}

/* ── Page Header ── */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
}

.page-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-stack);
  border-radius: var(--radius);
  border: 1px solid rgba(27,31,36,0.15);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
  line-height: 20px;
}

.btn-primary {
  background: var(--color-green);
  color: #fff;
  border-color: rgba(27,31,36,0.15);
}

.btn-primary:hover { background: #15803d; }

.btn-default {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn-default:hover { background: #e8ecf0; }

.btn-danger {
  background: var(--color-red);
  color: #fff;
  border-color: rgba(27,31,36,0.15);
}

.btn-danger:hover { background: #a40e26; }

.btn-info {
  background: var(--color-blue);
  color: #fff;
  border-color: rgba(27,31,36,0.15);
}

.btn-info:hover { background: #0550ae; }

.btn:active {
  transform: scale(0.97);
  filter: brightness(0.92);
}

.btn.htmx-request,
.htmx-request .btn {
  opacity: 0.65;
  cursor: wait;
  pointer-events: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn-loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.6s linear infinite;
  margin-left: 4px;
  vertical-align: middle;
}

/* ── Metric Cards ── */

.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.metric-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.metric-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.metric-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.2;
}

.metric-detail {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.metric-value .metric-unit {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* ── Tables ── */

.table-container {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.table-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.table-title .count-badge,
.card-header .count-badge {
  background: rgba(175,184,193,0.2);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 0 6px;
  border-radius: 10px;
  line-height: 20px;
}

.table-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-input {
  padding: 4px 12px;
  font-size: 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-text);
  font-family: var(--font-stack);
  width: 240px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(9,105,218,0.12);
}

.search-input::placeholder { color: var(--color-text-tertiary); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--color-border-muted);
}

tbody tr:nth-child(even) {
  background: var(--color-bg);
}

tbody tr:hover {
  background: #eef1f5;
}

tbody td {
  padding: 10px 16px;
  vertical-align: middle;
  white-space: nowrap;
}

/* ── Badges ── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  line-height: 18px;
  white-space: nowrap;
}

.badge-green { background: var(--color-green-bg); color: var(--color-green); }
.badge-red { background: var(--color-red-bg); color: var(--color-red); }
.badge-yellow { background: var(--color-yellow-bg); color: var(--color-yellow); }
.badge-blue { background: var(--color-blue-bg); color: var(--color-blue); }
.badge-purple { background: var(--color-purple-bg); color: var(--color-purple); }
.badge-muted { background: rgba(175,184,193,0.2); color: var(--color-text-secondary); }

/* ── Status Dots ── */

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot-green { background: var(--color-green); }
.status-dot-red { background: var(--color-red); }
.status-dot-yellow { background: #d4a72c; }
.status-dot-muted { background: var(--color-text-tertiary); }

/* ── Text Helpers ── */

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ── Layout Grids ── */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

/* ── Cards ── */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 0;
}

.card-body-padded {
  padding: 16px;
}

/* ── Key-Value Table ── */

.kv-table {
  width: 100%;
}

.kv-table tr {
  border-bottom: 1px solid var(--color-border-muted);
}

.kv-table tr:last-child {
  border-bottom: none;
}

.kv-table td {
  padding: 8px 16px;
  font-size: 13px;
  vertical-align: middle;
}

.kv-table td:first-child {
  color: var(--color-text-secondary);
  font-weight: 500;
  width: 140px;
  white-space: nowrap;
}

.kv-table td:last-child {
  color: var(--color-text);
}

/* ── Activity Feed ── */

.activity-feed {
  list-style: none;
}

.activity-item {
  display: flex;
  gap: 12px;
  padding: 10px 16px;
  font-size: 13px;
  border-bottom: 1px solid var(--color-border-muted);
  position: relative;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-dot-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  padding-top: 4px;
  position: relative;
}

.activity-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-white);
  z-index: 1;
  flex-shrink: 0;
}

.activity-dot-green { border-color: var(--color-green); background: var(--color-green-bg); }
.activity-dot-red { border-color: var(--color-red); background: var(--color-red-bg); }
.activity-dot-blue { border-color: var(--color-blue); background: var(--color-blue-bg); }
.activity-dot-yellow { border-color: #d4a72c; background: var(--color-yellow-bg); }

.activity-line {
  width: 2px;
  flex: 1;
  background: var(--color-border-muted);
  margin-top: 4px;
}

.activity-content {
  flex: 1;
  min-width: 0;
}

.activity-text {
  color: var(--color-text);
  line-height: 1.4;
}

.activity-text strong {
  font-weight: 600;
}

.activity-time {
  color: var(--color-text-tertiary);
  font-size: 12px;
  margin-top: 2px;
}

/* ── Forms ── */

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 6px 12px;
  font-size: 14px;
  font-family: var(--font-stack);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  line-height: 20px;
}

.form-input:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(9,105,218,0.12);
}

/* ── Login Page ── */

.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--color-bg);
  padding: 24px;
}

.login-card {
  width: 360px;
  max-width: 100%;
}

.login-error {
  background: var(--color-red-bg);
  color: var(--color-red);
  border: 1px solid rgba(207,34,46,0.2);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 13px;
  margin-bottom: 16px;
}

.login-btn {
  display: flex;
  width: 100%;
  justify-content: center;
  padding: 8px 16px;
  font-size: 14px;
}

/* ── Flash Messages ── */

.flash {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.5;
  margin-top: 12px;
  margin-bottom: 4px;
}

.flash-success {
  background: var(--color-green-bg);
  border: 1px solid rgba(26,127,55,0.2);
  color: var(--color-green);
}

.flash-error {
  background: var(--color-red-bg);
  border: 1px solid rgba(207,34,46,0.2);
  color: var(--color-red);
}

/* ── Footer ── */

.footer {
  text-align: center;
  padding: 24px;
  font-size: 12px;
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border);
  margin-top: 16px;
}

.footer a {
  color: var(--color-link);
  text-decoration: none;
}

.footer a:hover { text-decoration: underline; }

/* ── Tooltip ── */

.tip {
  position: relative;
  cursor: help;
}

.tip:hover::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: 100%;
  transform: translateX(-50%);
  padding: 3px 8px;
  font-size: 11px;
  white-space: nowrap;
  color: var(--color-white);
  background: var(--color-text);
  border-radius: 4px;
  pointer-events: none;
  z-index: 10;
}

/* ── API Key Display ── */

.api-key-display {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-yellow-bg);
  border: 1px solid rgba(154,103,0,0.2);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  word-break: break-all;
}

.api-key-display .copy-btn {
  flex-shrink: 0;
}

/* ── Empty State ── */

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-tertiary);
}

.empty-state-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.empty-state-text {
  font-size: 14px;
  margin-bottom: 16px;
}

/* ── Responsive ── */

@media (max-width: 900px) {
  .metrics-row { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .metrics-row { grid-template-columns: 1fr; }
  .top-nav { padding: 0 12px; }
  .main { padding: 16px; }
  .nav-links { display: none; }
  table { font-size: 12px; }
  thead th, tbody td { padding: 8px 10px; }
}