/* The `hidden` attribute must win over component `display` rules (e.g. the
   flex .account block), otherwise toggling element.hidden has no effect. */
[hidden] {
  display: none !important;
}

:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #1f2328;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --checkbox: var(--accent);
  --toolbar-bg: var(--card);
  --toolbar-bg-hover: var(--card);
  --button-text: #ffffff;
  --toolbar-text: var(--text);
  --good: #16a34a;
  --warn: #dc2626;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
}

:root[data-theme="dark"] {
  --bg: #0b1220;
  --card: #111827;
  --border: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.4);
}

:root[data-theme="dark"] .status.error {
  border-color: #7f1d1d;
  background: #2a0e0e;
  color: #fecaca;
}

.theme-toggle {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  background: var(--toolbar-bg);
  color: var(--toolbar-text);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition:
    background-color 0.15s,
    color 0.15s,
    border-color 0.15s,
    box-shadow 0.15s,
    transform 0.05s;
}

.theme-toggle:hover {
  background: var(--toolbar-bg-hover);
  border-color: var(--text);
  box-shadow:
    0 2px 6px rgba(15, 23, 42, 0.08),
    0 1px 3px rgba(15, 23, 42, 0.06);
}

.theme-toggle:active {
  transform: translateY(1px);
}

.theme-menu {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.theme-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  background: var(--toolbar-bg);
  color: var(--toolbar-text);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition:
    background-color 0.15s,
    border-color 0.15s,
    box-shadow 0.15s;
}

.theme-icon-btn:hover {
  background: var(--toolbar-bg-hover);
  border-color: var(--text);
  box-shadow:
    0 2px 6px rgba(15, 23, 42, 0.08),
    0 1px 3px rgba(15, 23, 42, 0.06);
}

.theme-icon-btn svg {
  width: 18px;
  height: 18px;
}

.icon-moon {
  display: none;
}

:root[data-theme="dark"] .icon-sun {
  display: none;
}

:root[data-theme="dark"] .icon-moon {
  display: inline-block;
}

.theme-menu-list {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.15);
  z-index: 10;
}

.theme-menu-list[hidden] {
  display: none;
}

.theme-menu-list button {
  padding: 8px 12px;
  text-align: left;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 5px;
  cursor: pointer;
  transition:
    background-color 0.15s,
    color 0.15s;
}

.theme-menu-list button:hover:not(.active) {
  background: var(--toolbar-bg-hover);
}

.theme-menu-list button.active {
  background: var(--accent);
  color: var(--button-text);
}

.dialog {
  width: min(440px, 92vw);
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.2);
}

.dialog::backdrop {
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(2px);
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.dialog-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.dialog-close {
  background: none;
  border: 0;
  font-size: 22px;
  color: var(--muted);
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}

.dialog-close:hover {
  color: var(--text);
}

.dialog-hint {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 16px;
}

.holiday-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  max-height: 220px;
  overflow-y: auto;
}

.holiday-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.holiday-list li:last-child {
  border-bottom: none;
}

.holiday-list li.empty {
  color: var(--muted);
  font-style: italic;
  justify-content: center;
  border-bottom: none;
}

.holiday-list .remove {
  background: none;
  border: 0;
  color: var(--warn);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 8px;
}

.holiday-list .remove:hover {
  text-decoration: underline;
}

.add-holiday {
  display: flex;
  gap: 8px;
}

.add-holiday input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  font-size: 14px;
}

.add-holiday button {
  padding: 8px 14px;
  color: var(--button-text);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
}

.add-holiday button:hover {
  background: var(--accent-hover);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

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

.header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.header h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.header-separator {
  width: 1px;
  height: 24px;
  background: var(--border);
}

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

#connect-btn,
#status-connect-btn {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-btn-text, var(--button-text));
  background: var(--primary-btn-bg, var(--accent));
  border: 1px solid var(--primary-btn-bg, var(--accent));
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.15s;
}

#connect-btn:hover,
#status-connect-btn:hover {
  background: var(--primary-btn-bg-hover, var(--accent-hover));
  border-color: var(--primary-btn-bg-hover, var(--accent-hover));
}

#connect-btn:disabled {
  background: #94a3b8;
  border-color: #94a3b8;
  cursor: not-allowed;
}

.status-connect {
  margin-top: 12px;
}

.account {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.account-user {
  color: var(--text);
  font-weight: 500;
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-btn {
  background: none;
  border: none;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  text-decoration: underline;
  cursor: pointer;
}

.link-btn:hover {
  color: var(--text);
}

.board-form {
  display: flex;
  align-items: center;
  gap: 8px;
}

.board-form label {
  color: var(--muted);
  font-size: 13px;
}

.board-form input {
  width: 110px;
  padding: 8px 10px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  outline: none;
}

.board-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.board-form button {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--button-text);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.15s;
}

.board-form button:hover {
  background: var(--accent-hover);
}
.board-form button:disabled {
  background: #94a3b8;
  border-color: #94a3b8;
  cursor: progress;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}

.checkbox input {
  width: auto;
  margin: 0;
  cursor: pointer;
  accent-color: var(--checkbox);
}

.chart-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

.settings-section {
  margin-bottom: 20px;
}

.settings-section:last-of-type {
  margin-bottom: 0;
}

.settings-section h3 {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 12px;
}

.settings-section .checkbox {
  display: flex;
  padding: 4px 0;
}

.status {
  padding: 12px 16px;
  margin-bottom: 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 14px;
}

.status.error {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.sprint-meta {
  margin-bottom: 16px;
}
.sprint-meta h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}
.muted {
  color: var(--muted);
  margin: 4px 0 0;
  font-size: 13px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

.stat-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--shadow);
  height: 512px;
}