/*
 * Shared components: the only surface every page (landing, /song, /songs,
 * auth modal) draws from. Built exclusively from tokens.css.
 */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--motion-med), color var(--motion-med);
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent-strong); }
h1, h2, h3, h4, p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
svg { display: block; }
/* Component classes set `display`, which would otherwise beat the `hidden` attribute. */
[hidden] { display: none !important; }

/* ---------- layout helpers ---------- */
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.section { padding: 80px 0; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--ink-secondary); }
.fineprint { color: var(--ink-tertiary); font-size: 12px; }
.center { text-align: center; }
.stack { display: grid; gap: var(--space-4); }
.row { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.spacer { flex: 1; }

/* ---------- type ---------- */
.eyebrow {
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-size: 11px;
  font-weight: 700;
}
.section-heading { font-size: clamp(28px, 3vw, 38px); line-height: 1.15; letter-spacing: -.035em; font-weight: 700; }
.section-subtitle { font-size: 16px; line-height: 1.6; color: var(--ink-secondary); max-width: 560px; margin-top: 12px; }
.section-head { max-width: 680px; margin-inline: auto; text-align: center; }
.section-head .section-subtitle { margin-inline: auto; }

/* ---------- icons ---------- */
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; flex-shrink: 0; }
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 24px; height: 24px; }
.icon-xl { width: 30px; height: 30px; }
.icon-circle { width: 40px; height: 40px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); border-radius: var(--radius-sm); }
.icon-circle .icon { width: 21px; height: 21px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.btn:disabled, .btn[aria-disabled="true"] { cursor: not-allowed; opacity: .55; }
.btn-primary { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-on); }
.btn-primary:hover:not(:disabled) { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--accent-on); }
.btn-secondary { background: var(--surface); border-color: var(--stroke-strong); color: var(--ink); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-hover); color: var(--ink); }
.btn-ghost { color: var(--ink-secondary); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-hover); color: var(--ink); }
.btn-outline { border-color: var(--stroke-strong); }
.btn-outline:hover:not(:disabled) { background: var(--surface-hover); }
.btn-danger { color: var(--danger); border-color: var(--stroke-strong); background: var(--surface); }
.btn-danger:hover:not(:disabled) { background: var(--danger-soft); border-color: var(--danger); }
.btn-lg { min-height: 48px; padding: 12px 22px; font-size: 15px; }
.btn-sm { min-height: 34px; padding: 6px 11px; font-size: 13px; border-radius: var(--radius-xs); }
.btn-full { width: 100%; }
.btn-icon { width: 40px; height: 40px; min-height: 40px; padding: 0; border-color: var(--stroke); background: var(--surface); border-radius: var(--radius-sm); }
.btn .icon { width: 17px; height: 17px; }
.btn-sm .icon { width: 15px; height: 15px; }
.btn-lg .icon { width: 18px; height: 18px; }
/* Loading state driven by JS: the label stays, a spinner appears before it. */
.btn.is-busy { pointer-events: none; opacity: .8; }
.btn.is-busy::before {
  content: "";
  width: 13px; height: 13px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: cd-spin .7s linear infinite;
}
@keyframes cd-spin { to { transform: rotate(360deg); } }

/* ---------- forms ---------- */
.field { display: grid; gap: 6px; }
.field__label { font-size: 13px; font-weight: 600; color: var(--ink); }
.field__hint { font-size: 12px; color: var(--ink-tertiary); }
.input {
  width: 100%;
  min-height: 44px;
  padding: 10px 13px;
  background: var(--surface);
  border: 1px solid var(--stroke-strong);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.input::placeholder { color: var(--ink-tertiary); }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), .16); }
.input[aria-invalid="true"] { border-color: var(--danger); }
textarea.input { min-height: 96px; resize: vertical; }
.form-error { color: var(--danger); font-size: 13px; font-weight: 500; }
.form-error:empty { display: none; }

/* ---------- pills, tags, statuses ---------- */
.tag-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--ink-secondary);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.tag--accent { background: var(--accent-soft); border-color: rgba(var(--accent-rgb), .2); color: var(--accent-strong); }
.tag--positive { background: var(--positive-soft); border-color: rgba(47, 158, 91, .22); color: var(--positive-strong); }
.tag--warning { background: var(--warning-soft); border-color: rgba(169, 112, 15, .22); color: var(--warning); }
.tag .icon { width: 13px; height: 13px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border-radius: var(--radius-pill); font-size: 11px; font-weight: 700; color: var(--accent-strong); background: var(--accent-soft); }
.pill .icon { width: 13px; height: 13px; }
.pill-quiet { background: var(--surface-2); color: var(--ink-secondary); border: 1px solid var(--stroke); }
.pill-success { background: var(--positive-soft); color: var(--positive-strong); }
.pill-warning { background: var(--warning-soft); color: var(--warning); }

.status { display: flex; align-items: flex-start; gap: 12px; background: var(--surface-2); border: 1px solid var(--stroke); border-radius: var(--radius-md); padding: 14px 16px; }
.status .icon { flex-shrink: 0; color: var(--accent); }
.status__title { font-size: 14px; font-weight: 600; }
.status__detail { color: var(--ink-secondary); font-size: 13px; margin-top: 2px; }
.status--success .icon { color: var(--positive); }
.status--warning .icon { color: var(--warning); }
.status--error .icon { color: var(--danger); }

.progress { width: 100%; height: 6px; background: var(--surface-2); border-radius: var(--radius-pill); overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--accent); border-radius: var(--radius-pill); transition: width var(--motion-med) var(--ease); }
.progress[aria-label] { outline: none; }

/* ---------- surfaces ---------- */
.card { background: var(--surface); border: 1px solid var(--stroke); border-radius: var(--radius-md); }
.divider { height: 1px; background: var(--stroke); border: 0; margin: 0; }

/* ---------- header ---------- */
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; letter-spacing: -.03em; }
.brand-mark { color: var(--accent); width: 28px; height: 28px; stroke-width: 0; }
.site-header { position: sticky; top: 0; z-index: 100; background: var(--header-bg); border-bottom: 1px solid var(--stroke); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.site-header__inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a { font-size: 14px; font-weight: 500; color: var(--ink-secondary); }
.site-nav a:hover { color: var(--ink); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-actions__auth { display: flex; align-items: center; gap: 8px; }
.menu-button { display: none; }

/* Tools dropdown in the main navigation (behaviour in ui.js). */
.nav-dropdown { position: relative; }
.nav-dropdown__trigger { display: inline-flex; align-items: center; gap: 5px; padding: 0; border: 0; background: transparent; font-size: 14px; font-weight: 500; color: var(--ink-secondary); }
.nav-dropdown__trigger:hover, .nav-dropdown.is-open .nav-dropdown__trigger { color: var(--ink); }
.nav-dropdown__trigger .icon { width: 14px; height: 14px; transition: transform var(--motion-fast); }
.nav-dropdown.is-open .nav-dropdown__trigger .icon { transform: rotate(180deg); }
/* The panel starts flush with the trigger and pads its top, so the pointer never crosses a dead gap. */
.nav-dropdown__panel { display: none; position: absolute; left: -18px; top: 100%; z-index: 120; width: 600px; padding-top: 18px; }
.nav-dropdown.is-open .nav-dropdown__panel { display: block; }
.nav-dropdown__inner { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 4px 18px; padding: 10px; background: var(--surface); border: 1px solid var(--stroke); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.nav-dropdown__group { display: grid; align-content: start; gap: 2px; }
.nav-dropdown__group + .nav-dropdown__group { padding-left: 14px; border-left: 1px solid var(--stroke); }
.nav-dropdown__title { padding: 6px 10px 4px; font-size: 10.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-tertiary); }
.site-nav .nav-dropdown__item { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 2px 12px; padding: 9px 10px; border-radius: var(--radius-sm); color: var(--ink); }
.site-nav .nav-dropdown__item:hover, .site-nav .nav-dropdown__item[aria-current="page"] { background: var(--surface-hover); color: var(--ink); }
.nav-dropdown__item .icon-circle { grid-row: span 2; width: 34px; height: 34px; }
.nav-dropdown__item .icon-circle .icon { width: 18px; height: 18px; }
.nav-dropdown__name { font-size: 13.5px; font-weight: 600; letter-spacing: -.01em; }
.nav-dropdown__desc { font-size: 12px; line-height: 1.35; color: var(--ink-tertiary); }

/* Persistent banner for pending email verification */
.auth-pending-banner {
  background: var(--surface-2);
  border-bottom: 1px solid var(--stroke);
  padding: 10px 0;
  font-size: 13px;
  color: var(--ink);
  animation: cd-modal-in var(--motion-med) var(--ease);
}
.auth-pending-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  flex-wrap: wrap;
}
.auth-pending-banner__text {
  display: flex;
  align-items: center;
  gap: 8px;
}
.auth-pending-banner__text .icon {
  color: var(--accent);
  width: 16px;
  height: 16px;
}
.auth-pending-banner__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.auth-pending-banner__cta {
  min-height: 30px;
  padding: 4px 12px;
  font-size: 13px;
}
.auth-pending-banner__dismiss {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}
.auth-pending-banner__dismiss:hover {
  color: var(--ink);
  text-decoration: underline;
}
.auth-header-code .icon {
  width: 15px;
  height: 15px;
  margin-right: 2px;
}

.theme-toggle { display: flex; align-items: center; gap: 1px; padding: 3px; background: var(--surface-2); border: 1px solid var(--stroke); border-radius: var(--radius-pill); }
.theme-toggle button { width: 30px; height: 28px; display: grid; place-items: center; border: 0; border-radius: var(--radius-pill); background: transparent; color: var(--ink-tertiary); }
.theme-toggle button[aria-pressed="true"] { color: var(--ink); background: var(--surface); box-shadow: var(--shadow-sm); }
.theme-toggle .icon { width: 16px; height: 16px; }

/* Signed-in chip: credits or plan. */
.credit-chip { display: inline-flex; align-items: center; gap: 7px; height: 34px; padding: 0 11px; border: 1px solid var(--stroke); border-radius: var(--radius-pill); background: var(--surface); color: var(--ink-secondary); font-size: 12px; font-weight: 600; white-space: nowrap; }
.credit-chip .icon { width: 15px; height: 15px; color: var(--accent); }
.credit-chip.is-low .icon { color: var(--warning); }
.credit-chip:hover { color: var(--ink); border-color: var(--stroke-strong); }

/* Account dropdown. */
.menu { position: relative; }
.menu__trigger { display: inline-flex; align-items: center; gap: 8px; height: 34px; padding: 0 6px 0 6px; border: 1px solid var(--stroke); border-radius: var(--radius-pill); background: var(--surface); color: var(--ink); font-size: 13px; font-weight: 600; }
.menu__trigger:hover { border-color: var(--stroke-strong); }
.menu__avatar { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-strong); font-size: 11px; font-weight: 700; text-transform: uppercase; }
.menu__trigger .icon { width: 14px; height: 14px; color: var(--ink-tertiary); }
.menu__panel { position: absolute; right: 0; top: calc(100% + 8px); z-index: 120; min-width: 234px; padding: 6px; background: var(--surface); border: 1px solid var(--stroke); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); display: grid; gap: 1px; }
.menu__email { padding: 8px 10px 9px; font-size: 12px; color: var(--ink-tertiary); overflow-wrap: anywhere; border-bottom: 1px solid var(--stroke); margin-bottom: 5px; }
.menu__item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 10px; border: 0; border-radius: var(--radius-xs); background: transparent; color: var(--ink); font-size: 13px; font-weight: 500; text-align: left; }
.menu__item:hover { background: var(--surface-hover); color: var(--ink); }
.menu__item .icon { width: 16px; height: 16px; color: var(--ink-tertiary); }
.menu__item--danger { color: var(--danger); }
.menu__item--danger .icon { color: var(--danger); }

/* ---------- tabs ---------- */
.tabs { display: flex; align-items: center; gap: 2px; border-bottom: 1px solid var(--stroke); }
.tab { padding: 11px 13px; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; background: none; color: var(--ink-secondary); font-size: 13px; font-weight: 600; white-space: nowrap; }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--accent-strong); border-bottom-color: var(--accent); }
.tab-panel[hidden] { display: none; }

/* ---------- skeleton ---------- */
.skeleton { background: linear-gradient(90deg, var(--surface-2) 0%, var(--surface-hover) 45%, var(--surface-2) 100%); background-size: 220% 100%; animation: cd-shimmer 1.8s linear infinite; border-radius: var(--radius-xs); }
@keyframes cd-shimmer { to { background-position-x: -220%; } }

/* ---------- modal ---------- */
.modal { position: fixed; inset: 0; z-index: 300; display: grid; place-items: center; padding: 20px; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(22, 20, 17, .55); backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); }
.modal__panel {
  position: relative;
  width: min(100%, 440px);
  max-height: calc(100dvh - 40px);
  overflow: auto;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: cd-modal-in var(--motion-med) var(--ease);
}
.modal__close { position: absolute; top: 12px; right: 12px; width: 32px; height: 32px; display: grid; place-items: center; border: 0; border-radius: var(--radius-xs); background: transparent; color: var(--ink-tertiary); }
.modal__close:hover { background: var(--surface-hover); color: var(--ink); }
.modal__title { font-size: 21px; line-height: 1.25; letter-spacing: -.02em; font-weight: 700; padding-right: 28px; }
.modal__reason { margin-top: 8px; color: var(--ink-secondary); font-size: 14px; }
.modal__body { margin-top: 18px; display: grid; gap: 14px; }
@keyframes cd-modal-in { from { opacity: 0; transform: translateY(10px) scale(.99); } }

/* ---------- toast ---------- */
.toast-stack { position: fixed; right: 20px; bottom: 20px; z-index: 400; display: grid; gap: 10px; width: min(380px, calc(100vw - 32px)); }
.toast { display: flex; align-items: flex-start; gap: 11px; padding: 13px 14px; background: var(--surface); border: 1px solid var(--stroke); border-left: 3px solid var(--accent); border-radius: var(--radius-sm); box-shadow: var(--shadow-md); color: var(--ink); animation: cd-toast-in var(--motion-med) var(--ease); }
.toast .icon { width: 18px; height: 18px; color: var(--accent); margin-top: 1px; }
.toast strong { display: block; font-size: 13px; font-weight: 600; }
.toast span { display: block; margin-top: 2px; font-size: 12px; color: var(--ink-secondary); }
.toast__close { margin-left: auto; padding: 0; border: 0; background: transparent; color: var(--ink-tertiary); }
.toast--success { border-left-color: var(--positive); }
.toast--success .icon { color: var(--positive); }
.toast--error { border-left-color: var(--danger); }
.toast--error .icon { color: var(--danger); }
@keyframes cd-toast-in { from { opacity: 0; transform: translateY(8px); } }

/* ---------- empty state ---------- */
.empty-state { display: grid; justify-items: center; text-align: center; gap: 12px; padding: 56px 24px; }
.empty-state h3 { font-size: 17px; font-weight: 700; }
.empty-state p { color: var(--ink-secondary); font-size: 14px; max-width: 380px; }

/* ---------- footer (landing and library) ---------- */
.site-footer { padding: 32px 0; border-top: 1px solid var(--stroke); background: var(--surface); }
.footer__inner { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 20px 32px; }
.footer__about p { margin-top: 8px; max-width: 360px; font-size: 12.5px; line-height: 1.6; color: var(--ink-tertiary); }
.footer__links { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; font-size: 13px; color: var(--ink-secondary); }
.footer__links a { color: var(--ink-secondary); }
.footer__links a:hover { color: var(--accent-strong); }
.footer__legal { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--stroke); font-size: 11.5px; color: var(--ink-tertiary); display: flex; flex-wrap: wrap; gap: 6px 18px; }
.footer__inner > .brand { align-self: center; }
.footer__inner--cols { flex-wrap: nowrap; gap: 32px 64px; }
.footer__cols { display: grid; grid-template-columns: repeat(4, auto); gap: 0 56px; font-size: 13px; }
.footer__col { display: grid; align-content: start; gap: 9px; }
.footer__title { margin-bottom: 3px; font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-tertiary); }
.footer__col a { color: var(--ink-secondary); }
.footer__col a:hover { color: var(--accent-strong); }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .site-nav {
    display: none;
    position: absolute;
    left: 16px; right: 16px; top: 68px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    background: var(--surface);
    border: 1px solid var(--stroke);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 10px; border-radius: var(--radius-xs); }
  .site-nav a:hover { background: var(--surface-hover); }
  .menu-button { display: grid; place-items: center; }
  .site-nav { max-height: calc(100vh - 92px); overflow-y: auto; }
  .site-nav > a, .nav-dropdown__trigger { padding: 10px; border-radius: var(--radius-xs); }
  .nav-dropdown__trigger { width: 100%; justify-content: space-between; }
  .nav-dropdown__trigger:hover { background: var(--surface-hover); }
  .nav-dropdown__panel { position: static; width: auto; padding: 2px 0 6px; }
  .nav-dropdown__inner { grid-template-columns: minmax(0, 1fr); gap: 4px; padding: 0 0 0 6px; border: 0; border-left: 2px solid var(--stroke); border-radius: 0; box-shadow: none; background: transparent; }
  .nav-dropdown__desc { display: none; }
  .site-nav .nav-dropdown__item { padding: 8px 10px; }
  .footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 32px; width: 100%; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .section { padding: 56px 0; }
  /* Keep both auth buttons reachable; trade the wordmark for the space. */
  .site-header .brand > span { display: none; }
  .header-actions { gap: 6px; }
  .header-actions__auth { gap: 6px; }
  .header-actions__auth .btn-ghost { min-height: 34px; padding: 6px 8px; font-size: 13px; }
  .header-actions__auth .btn-primary { min-height: 34px; padding: 6px 10px; font-size: 13px; }
  .toast-stack { left: 16px; right: 16px; bottom: 16px; width: auto; }
}
@media (max-width: 400px) {
  /* 360 px and below: keep every control, shrink the chrome instead. */
  .site-header__inner { gap: 8px; }
  .header-actions { gap: 4px; }
  .header-actions__auth { gap: 4px; }
  .theme-toggle { padding: 2px; }
  .theme-toggle button { width: 25px; height: 26px; }
  .header-actions__auth .btn-ghost { padding: 6px 5px; }
  .header-actions__auth .btn-primary { padding: 6px 8px; }
  .menu-button { width: 34px; height: 34px; min-height: 34px; }
  .modal__panel { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}