/* dancebook.com: Light and Dark skins on Bootstrap 5.3 (data-bs-theme on <html>, set by js/theme.js).
   Flat surfaces with thin borders, a faint glow at the top of the page, muted secondary text, pill badges
   and outlined buttons. Colours are tokens (--db-*), mapped onto Bootstrap's variables below. */

:root,
[data-bs-theme="light"] {
  color-scheme: light;
  --db-bg: #f8f8f7;
  --db-glow: rgba(0, 0, 0, 0.035);
  --db-surface: #ffffff;
  --db-surface-2: #fafafa;
  --db-border: #e6e4e2;
  --db-border-strong: #d6d3d1;
  --db-text: #1c1917;
  --db-muted: #57534e;
  --db-subtle: #78716c;
  --db-accent: #2563eb;
  --db-accent-icon: #1c1917;
  --db-shadow: 0 1px 2px rgba(28, 25, 23, 0.04), 0 8px 24px rgba(28, 25, 23, 0.04);
  --db-amber-bg: #fdf4e3;
  --db-amber-border: #f5cf8a;
  --db-amber-text: #92400e; /* 6.5:1 on --db-amber-bg */
  --db-green-bg: #ecf7ef;
  --db-green-border: #a7dbb5;
  --db-green-text: #15803d;
  --db-red-bg: #fceaec;
  --db-red-border: #f2b8bf;
  --db-red-text: #57534e;
  --db-btn-bg: #1c1917;
  --db-btn-text: #ffffff;
  --db-btn-hover: #3a3532;
}

[data-bs-theme="dark"] {
  color-scheme: dark;
  --db-bg: #232020;
  --db-glow: rgba(255, 255, 255, 0.028);
  --db-surface: #2b2827;
  --db-surface-2: #312d2c;
  --db-border: #3e3a38;
  --db-border-strong: #4a4543;
  --db-text: #f5f5f4;
  --db-muted: #cfcac6;
  --db-subtle: #a8a29e;
  --db-accent: #60a5fa;
  --db-accent-icon: #60a5fa;
  --db-shadow: 0 1px 2px rgba(0, 0, 0, 0.25), 0 10px 30px rgba(0, 0, 0, 0.2);
  --db-amber-bg: rgba(245, 158, 11, 0.1);
  --db-amber-border: #8a5a12;
  --db-amber-text: #f59e0b;
  --db-green-bg: rgba(34, 197, 94, 0.1);
  --db-green-border: #2f6b43;
  --db-green-text: #4ade80;
  --db-red-bg: #3a2427;
  --db-red-border: #74323a;
  --db-red-text: #ece4e4;
  --db-btn-bg: #f5f5f4;
  --db-btn-text: #1c1917;
  --db-btn-hover: #ffffff;
}

/* Bootstrap, in the skin's colours. */
:root,
[data-bs-theme] {
  --bs-body-bg: var(--db-bg);
  --bs-body-color: var(--db-text);
  --bs-emphasis-color: var(--db-text);
  --bs-secondary-color: var(--db-muted);
  --bs-tertiary-color: var(--db-subtle);
  --bs-secondary-bg: var(--db-surface-2);
  --bs-tertiary-bg: var(--db-surface-2);
  --bs-border-color: var(--db-border);
  --bs-border-color-translucent: var(--db-border);
  --bs-link-color: var(--db-accent);
  --bs-link-color-rgb: 37, 99, 235;
  --bs-link-hover-color: var(--db-accent);
  --bs-heading-color: var(--db-text);
  --bs-body-font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

[data-bs-theme="dark"] {
  --bs-link-color-rgb: 96, 165, 250;
}

html {
  font-size: 16px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
  background-color: var(--db-bg);
  /* The faint light at the top of the page. */
  background-image: radial-gradient(ellipse 60% 45% at 50% 0%, var(--db-glow), transparent 70%);
  background-attachment: fixed;
  color: var(--db-text);
}

.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--db-text);
  --bs-table-border-color: var(--db-border);
}

.card,
.list-group-item,
.modal-content,
.dropdown-menu {
  --bs-card-bg: var(--db-surface);
  --bs-list-group-bg: var(--db-surface);
  --bs-modal-bg: var(--db-surface);
  --bs-dropdown-bg: var(--db-surface);
  border-color: var(--db-border);
}

.form-control,
.form-select {
  background-color: var(--db-surface);
  border-color: var(--db-border-strong);
  color: var(--db-text);
}

.form-control::placeholder {
  color: var(--db-subtle);
}

.btn:focus-visible, .form-control:focus, .form-select:focus, .form-check-input:focus {
  border-color: var(--db-accent);
  box-shadow: none;
}

/* Keyboard focus: an opaque ring in the accent color (at least 3:1 against the page in both skins), in place of
   Bootstrap's faint 25% glow. */
.btn:focus-visible,
.btn-outline-skin:focus-visible,
.btn-danger-soft:focus-visible,
.btn-google:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible,
.form-check-input:focus-visible,
.nav-link:focus-visible,
.navbar-toggler:focus-visible {
  outline: 2px solid var(--db-accent);
  outline-offset: 2px;
  box-shadow: none;
}

/* "Skip to content": hidden until it gets keyboard focus, then shown at the top left. */
.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 1090;
  padding: 0.45rem 0.9rem;
  color: var(--db-text);
  background: var(--db-surface);
  border: 1px solid var(--db-border-strong);
  border-radius: 0.4rem;
}

/* Dark skin: Bootstrap's outline buttons and red text are too dark on the page (about 3.5:1); lighter tints reach
   at least 4.5:1 on --db-bg and --db-surface. Hover and active fill with the tint, with dark text. */
[data-bs-theme="dark"] .btn-outline-secondary {
  --bs-btn-color: #a8a29e;
  --bs-btn-border-color: #a8a29e;
  --bs-btn-hover-color: #1c1917;
  --bs-btn-hover-bg: #a8a29e;
  --bs-btn-hover-border-color: #a8a29e;
  --bs-btn-active-color: #1c1917;
  --bs-btn-active-bg: #cfcac6;
  --bs-btn-active-border-color: #cfcac6;
  --bs-btn-disabled-color: #a8a29e;
  --bs-btn-disabled-border-color: #a8a29e;
}

[data-bs-theme="dark"] .btn-outline-primary {
  --bs-btn-color: #60a5fa;
  --bs-btn-border-color: #60a5fa;
  --bs-btn-hover-color: #1c1917;
  --bs-btn-hover-bg: #60a5fa;
  --bs-btn-hover-border-color: #60a5fa;
  --bs-btn-active-color: #1c1917;
  --bs-btn-active-bg: #93c5fd;
  --bs-btn-active-border-color: #93c5fd;
  --bs-btn-disabled-color: #60a5fa;
  --bs-btn-disabled-border-color: #60a5fa;
}

[data-bs-theme="dark"] .btn-outline-success {
  --bs-btn-color: #4ade80;
  --bs-btn-border-color: #4ade80;
  --bs-btn-hover-color: #1c1917;
  --bs-btn-hover-bg: #4ade80;
  --bs-btn-hover-border-color: #4ade80;
  --bs-btn-active-color: #1c1917;
  --bs-btn-active-bg: #86efac;
  --bs-btn-active-border-color: #86efac;
  --bs-btn-disabled-color: #4ade80;
  --bs-btn-disabled-border-color: #4ade80;
}

[data-bs-theme="dark"] .btn-outline-danger {
  --bs-btn-color: #f87171;
  --bs-btn-border-color: #f87171;
  --bs-btn-hover-color: #1c1917;
  --bs-btn-hover-bg: #f87171;
  --bs-btn-hover-border-color: #f87171;
  --bs-btn-active-color: #1c1917;
  --bs-btn-active-bg: #fca5a5;
  --bs-btn-active-border-color: #fca5a5;
  --bs-btn-disabled-color: #f87171;
  --bs-btn-disabled-border-color: #f87171;
}

/* Light skin: Bootstrap's red text is about 4.3:1 on the page; a darker red reaches about 6.5:1. */
[data-bs-theme="light"] .text-danger {
  color: #b02a37 !important;
}

[data-bs-theme="dark"] .text-danger {
  color: #f87171 !important;
}

.btn-primary {
  --bs-btn-bg: #1b6ec2;
  --bs-btn-border-color: #1861ac;
  --bs-btn-hover-bg: #1861ac;
  --bs-btn-hover-border-color: #155497;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* Top bar: brand on the left, plain links, outlined buttons on the right. */
.site-nav {
  background: transparent;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.site-nav .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--db-text);
}

/* The logo: its black page follows the text colour (near-white in Dark mode). */
.site-nav .navbar-brand .brand-logo {
  height: 26px;
  width: auto;
  color: var(--db-text);
}

.site-nav .nav-link,
.site-nav .btn-link {
  color: var(--db-text);
  font-size: 0.95rem;
}

.site-nav .nav-link:hover,
.site-nav .btn-link:hover {
  color: var(--db-muted);
}

.site-nav .navbar-toggler {
  border-color: var(--db-border-strong);
}

.btn-outline-skin {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--db-text);
  background: var(--db-surface);
  border: 1px solid var(--db-border);
  border-radius: 0.4rem;
}

.btn-outline-skin:hover {
  color: var(--db-text);
  background: var(--db-surface-2);
  border-color: var(--db-border-strong);
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  white-space: nowrap;
  line-height: 60px;
  border-top: 1px solid var(--db-border);
  color: var(--db-subtle);
}

/* Pill badges. */
.pill {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 999px;
  border: 1px solid;
  line-height: 1.4;
}

.pill-amber { background: var(--db-amber-bg); border-color: var(--db-amber-border); color: var(--db-amber-text); }
.pill-green { background: var(--db-green-bg); border-color: var(--db-green-border); color: var(--db-green-text); }
.pill-neutral { background: var(--db-surface-2); border-color: var(--db-border-strong); color: var(--db-muted); }

/* Soft alerts. */
.alert-soft {
  padding: 0.9rem 1rem;
  border: 1px solid;
  border-radius: 0.4rem;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.alert-soft-danger { background: var(--db-red-bg); border-color: var(--db-red-border); color: var(--db-red-text); }
.alert-soft-success { background: var(--db-green-bg); border-color: var(--db-green-border); color: var(--db-text); }
.alert-soft-info { background: var(--db-surface-2); border-color: var(--db-border-strong); color: var(--db-text); }
.alert-soft ul { margin: 0; padding-left: 1.1rem; }

/* Account pages (sign up, sign in, passwords, confirmations): one compact card with a header and a body. */
.auth-shell {
  display: flex;
  justify-content: center;
  padding: 2.5rem 0 3rem;
}

.auth-card {
  width: 100%;
  max-width: 30rem;
  background: var(--db-surface);
  border: 1px solid var(--db-border);
  border-radius: 0.5rem;
  box-shadow: var(--db-shadow);
}

.auth-card-header {
  padding: 2rem 2rem 1.6rem;
  text-align: center;
  border-bottom: 1px solid var(--db-border);
}

.auth-card-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.auth-card-mark svg {
  color: var(--db-accent-icon);
}

.auth-card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}

.auth-card-subtitle {
  color: var(--db-muted);
  font-size: 0.95rem;
  margin: 0;
}

.auth-card-body {
  padding: 1.6rem 2rem 1.6rem;
}

.auth-card-body .form-label,
.account-content .form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--db-text);
  margin-bottom: 0.3rem;
}

.auth-card-body .form-control,
.account-content .form-control {
  padding: 0.5rem 0.75rem;
  border-radius: 0.4rem;
}

.auth-card-body .form-text,
.auth-card-body .field-error,
.account-content .form-text,
.account-content .field-error {
  font-size: 0.85rem;
}

.field-error {
  color: #dc2626;
}

[data-bs-theme="dark"] .field-error {
  color: #f87171;
}

/* The main button: solid, in the text colour (black in Light, near-white in Dark). */
.btn-skin {
  width: 100%;
  padding: 0.55rem 1rem;
  font-weight: 600;
  color: var(--db-btn-text);
  background: var(--db-btn-bg);
  border: 1px solid var(--db-btn-bg);
  border-radius: 0.4rem;
}

.btn-skin:hover,
.btn-skin:focus {
  color: var(--db-btn-text);
  background: var(--db-btn-hover);
  border-color: var(--db-btn-hover);
}

/* Same, sized to its text (account settings). */
.btn-skin-inline {
  width: auto;
  padding: 0.45rem 1.1rem;
  font-size: 0.9rem;
}

/* Destructive actions: outlined red, filled on hover. */
.btn-danger-soft {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #dc2626;
  background: transparent;
  border: 1px solid var(--db-red-border);
  border-radius: 0.4rem;
}

.btn-danger-soft:hover,
.btn-danger-soft:focus {
  color: #b91c1c;
  background: var(--db-red-bg);
  border-color: #dc2626;
}

[data-bs-theme="dark"] .btn-danger-soft { color: #f87171; }
[data-bs-theme="dark"] .btn-danger-soft:hover { color: #fca5a5; border-color: #f87171; }

.auth-links {
  margin-top: 1.1rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--db-muted);
}

.auth-links a {
  color: var(--db-muted);
  text-decoration: none;
}

.auth-links a:hover {
  color: var(--db-text);
  text-decoration: underline;
}

.auth-links .sep {
  margin: 0 0.5rem;
  color: var(--db-border-strong);
}

/* Your account (Manage pages): one card with a side menu. */
.account-shell {
  max-width: 58rem;
  margin: 1.5rem auto 3rem;
}

.account-heading {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.account-heading h1 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
}

.account-heading .who {
  color: var(--db-muted);
  font-size: 0.95rem;
}

.account-card {
  display: grid;
  grid-template-columns: 13rem 1fr;
  background: var(--db-surface);
  border: 1px solid var(--db-border);
  border-radius: 0.5rem;
  box-shadow: var(--db-shadow);
}

.account-nav {
  border-right: 1px solid var(--db-border);
  padding: 1rem 0.75rem;
}

.account-nav a {
  display: block;
  padding: 0.45rem 0.75rem;
  margin-bottom: 0.15rem;
  border-radius: 0.4rem;
  color: var(--db-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.account-nav a:hover {
  color: var(--db-text);
  background: var(--db-surface-2);
}

.account-nav a.active {
  color: var(--db-text);
  background: var(--db-surface-2);
  font-weight: 600;
}

.account-content {
  padding: 1.5rem 2rem 1.75rem;
  min-width: 0;
}

.account-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
}

.account-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.4rem;
}

.account-content .intro {
  color: var(--db-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.account-content form.narrow {
  max-width: 26rem;
}

.account-content .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.account-content .codes {
  font-family: ui-monospace, Consolas, monospace;
  background: var(--db-surface-2);
  border: 1px solid var(--db-border);
  border-radius: 0.4rem;
  padding: 0.75rem 1rem;
  columns: 2;
  max-width: 22rem;
}

@media (max-width: 767.98px) {
  .account-card { grid-template-columns: 1fr; }
  .account-nav {
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--db-border);
    padding: 0.6rem;
  }
  .account-nav a { white-space: nowrap; margin: 0; }
  .account-content { padding: 1.25rem; }
}

@media (max-width: 575.98px) {
  .auth-card-header { padding: 1.6rem 1.25rem 1.4rem; }
  .auth-card-body { padding: 1.4rem 1.25rem; }
  .auth-shell { padding-top: 1rem; }
}

/* The Light/Dark button names the current mode, with the icon of the one it switches to. */
[data-bs-theme="light"] .theme-icon-sun,
[data-bs-theme="dark"] .theme-icon-moon {
  display: none;
}

/* Cookie banner: a bar fixed to the bottom of the page until the visitor answers. */
.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1080;
  background: var(--db-surface);
  border-top: 1px solid var(--db-border-strong);
  box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.08);
  font-size: 0.92rem;
  color: var(--db-text);
}

.cookie-banner-inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.cookie-banner-inner p {
  flex: 1;
  color: var(--db-muted);
}

.cookie-banner-inner p strong {
  color: var(--db-text);
}

.cookie-banner a {
  color: var(--db-text);
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 0.5rem;
  flex: none;
}

.cookie-banner-actions .btn-skin {
  min-width: 6.5rem;
}

/* Room for the banner at the bottom of the page, so it doesn't cover the end of the content or the footer. The
   banner's script sets --cookie-banner-height to its actual height; these estimates hold until then (or without scripts). */
:root:has(.cookie-banner) {
  --cookie-banner-height: 5rem;
}

body {
  padding-bottom: var(--cookie-banner-height, 0px);
}

.footer {
  bottom: var(--cookie-banner-height, 0px);
}

@media (max-width: 767.98px) {
  .cookie-banner-inner { flex-direction: column; align-items: stretch; gap: 0.75rem; }
  .cookie-banner-actions .btn-skin { flex: 1; }
  :root:has(.cookie-banner) { --cookie-banner-height: 12rem; }
}

/* /Legal: a large centred title over one card of sections (policies, then attributions). */
.legal-page {
  padding: 2.5rem 0 3rem;
}

.legal-title {
  font-size: 3rem;
  font-weight: 300;
  text-align: center;
  margin-bottom: 1.5rem;
}

.legal-card {
  max-width: 50rem;
  margin: 0 auto;
  padding: 1.75rem 2rem;
  background: var(--db-surface);
  border: 1px solid var(--db-border);
  border-radius: 0.5rem;
  box-shadow: var(--db-shadow);
}

.policy h2 { font-size: 1.35rem; font-weight: 700; margin-top: 0; margin-bottom: 0.75rem; }
.policy h3 { font-size: 1.1rem; font-weight: 700; margin-top: 1.5rem; margin-bottom: 0.5rem; }
.policy p, .policy li { color: var(--db-muted); line-height: 1.6; }
.policy hr { margin: 1.75rem 0; border-color: var(--db-border-strong); opacity: 1; }
.policy summary { color: var(--db-text); cursor: pointer; font-size: 0.95rem; }

.license-text {
  margin: 0.5rem 0 0;
  padding: 0.9rem 1rem;
  font-size: 0.8rem;
  white-space: pre-wrap;
  color: var(--db-muted);
  background: var(--db-surface-2);
  border: 1px solid var(--db-border);
  border-radius: 0.4rem;
}

@media (max-width: 575.98px) {
  .legal-title { font-size: 2.25rem; }
  .legal-card { padding: 1.25rem; }
}

/* "Sign in with Google": Google's button style (light: white, grey border; dark: #131314). */
.btn-google {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.55rem 1rem;
  font-family: Roboto, "Segoe UI", Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: #1f1f1f;
  background: #ffffff;
  border: 1px solid #747775;
  border-radius: 0.4rem;
}

.btn-google:hover { background: #f7f8f8; }

[data-bs-theme="dark"] .btn-google {
  color: #e3e3e3;
  background: #131314;
  border-color: #8e918f;
}

[data-bs-theme="dark"] .btn-google:hover { background: #1f1f20; }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1rem;
  color: var(--db-subtle);
  font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--db-border);
}