/* ===== CSS Custom Properties (Dark Default) ===== */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #656d76;
  --border: #30363d;
  --border-light: #21262d;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --danger: #f85149;
  --warning: #d29922;
  --success: #3fb950;
  --info: #58a6ff;
  --shadow: rgba(0, 0, 0, 0.3);
  --radius: 6px;
  --radius-lg: 8px;
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8b949e;
  --border: #d0d7de;
  --border-light: #eaeef2;
  --accent: #0969da;
  --accent-hover: #0550ae;
  --danger: #cf222e;
  --warning: #9a6700;
  --success: #1a7f37;
  --info: #0969da;
  --shadow: rgba(0, 0, 0, 0.1);
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== Base ===== */
html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
}

body {
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ===== Nav ===== */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.nav-brand:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  text-decoration: none;
}

.btn:hover {
  background: var(--border);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
}

.btn-danger {
  color: var(--danger);
  border-color: var(--danger);
  background: transparent;
}

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

/* ===== Select ===== */
select {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
}

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

/* ===== Cards ===== */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.card-body {
  padding: 1rem;
}

/* ===== Tables ===== */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 0.625rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

th {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
}

tr:hover {
  background: var(--bg-tertiary);
}

tr.clickable {
  cursor: pointer;
}

/* ===== Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 2rem;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge-danger {
  background: color-mix(in srgb, var(--danger) 15%, transparent);
  color: var(--danger);
}

.badge-warning {
  background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning);
}

.badge-info {
  background: color-mix(in srgb, var(--info) 15%, transparent);
  color: var(--info);
}

/* ===== Login ===== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  text-align: center;
  padding: 3rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.login-card h1 {
  margin-bottom: 0.5rem;
}

.login-card p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ===== Error ===== */
.error-banner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: color-mix(in srgb, var(--danger) 10%, var(--bg-secondary));
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  color: var(--danger);
  font-size: 0.875rem;
}

.error-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.error-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.error-card {
  text-align: center;
  padding: 3rem;
}

.error-card h1 {
  margin-bottom: 0.5rem;
}

.error-card p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ===== Loading ===== */
.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem;
  color: var(--text-secondary);
}

.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ===== HTMX Indicator ===== */
.htmx-indicator {
  opacity: 0;
  transition: opacity 0.2s;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  opacity: 1;
}

/* ===== Dashboard Grid ===== */
.dashboard-grid {
  display: grid;
  gap: 1.5rem;
}

.chart-container {
  position: relative;
  height: 250px;
}

/* ===== Issue Detail ===== */
.issue-header {
  margin-bottom: 1.5rem;
}

.issue-header h1 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.issue-meta {
  display: flex;
  gap: 1rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .detail-grid {
    grid-template-columns: 2fr 1fr;
  }
}

/* ===== Stacktrace ===== */
.frame {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.frame-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--bg-tertiary);
  cursor: pointer;
  font-size: 0.85rem;
}

.frame-header:hover {
  background: var(--border);
}

.frame-file {
  color: var(--text-secondary);
  font-family: monospace;
}

.frame-func {
  font-weight: 600;
}

.frame-context {
  padding: 0.75rem;
  background: var(--bg-primary);
  font-family: monospace;
  font-size: 0.8rem;
  overflow-x: auto;
  white-space: pre;
}

.frame-context .highlight {
  background: color-mix(in srgb, var(--warning) 20%, transparent);
  display: block;
}

/* ===== Tags ===== */
.tag-group {
  margin-bottom: 1rem;
}

.tag-group-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
}

.tag-values {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

/* ===== Period Selector ===== */
.period-selector {
  display: flex;
  gap: 0.25rem;
}

.period-selector .btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ===== Utility ===== */
.text-muted {
  color: var(--text-muted);
}

.text-secondary {
  color: var(--text-secondary);
}

.text-danger {
  color: var(--danger);
}

.text-right {
  text-align: right;
}

.mono {
  font-family: monospace;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 400px;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mt-1 {
  margin-top: 0.5rem;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0.25rem;
  line-height: 1;
}

.theme-toggle:hover {
  color: var(--text-primary);
}