/* ==========================================================================
   SALDO — component layer
   Translated 1:1 from the Saldo Design System's React components
   (components/core/*.jsx, components/forms/*.jsx). Every rule here encodes a
   brand-board mandate:

     1. Radius 0. Sharp corners.
     2. No shadows. Structure comes from 2px ink borders and colour blocks.
     3. No hover-lift. Hover inverts to Ink/Signal instead.
     4. One yellow block per viewport. Two means neither reads.
     5. Buttons are Ink with Signal text. Never green.

   Everything is class-scoped (0,1,0) rather than element-scoped so it always
   outranks the Tailwind Play CDN's preflight regardless of injection order.
   ========================================================================== */

/* --- page ----------------------------------------------------------------- */

/* Alpine hides these until it has initialised, so conditional blocks never
   flash on first paint. */
[x-cloak] {
  display: none !important;
}

.sld-page {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: var(--type-body-size);
  line-height: var(--type-body-leading);
  -webkit-font-smoothing: antialiased;
}

.sld-container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.sld-container--narrow {
  max-width: var(--container-narrow);
}

.sld-section {
  border-bottom: var(--border);
}

.sld-section--alt {
  background: var(--surface-alt);
}

.sld-section--signal {
  background: var(--surface-signal);
}

.sld-section--ink {
  background: var(--surface-invert);
  color: var(--text-on-ink);
}

/* Focus is a 3px ink outline at 2px offset — everywhere, no exceptions. */
:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
}

.sld-section--ink :focus-visible {
  outline-color: var(--signal);
}

/* --- typography ----------------------------------------------------------- */

.sld-h1,
.sld-h2,
.sld-h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  margin: 0;
  text-wrap: balance;
}

.sld-h1 {
  font-weight: var(--weight-display);
  font-size: var(--type-hero-size);
  line-height: var(--type-hero-leading);
  letter-spacing: var(--type-hero-tracking);
}

.sld-h2 {
  font-weight: var(--weight-display);
  font-size: var(--type-h2-size);
  line-height: var(--type-h2-leading);
  letter-spacing: var(--type-h2-tracking);
}

.sld-h3 {
  font-weight: var(--weight-display-sub);
  font-size: var(--type-h3-size);
  line-height: var(--type-h3-leading);
  letter-spacing: var(--type-h3-tracking);
}

.sld-body {
  font-size: var(--type-body-size);
  line-height: var(--type-body-leading);
  max-width: var(--type-measure);
  text-wrap: pretty;
  margin: 0;
}

.sld-body-l {
  font-size: var(--type-body-l-size);
  line-height: var(--type-body-l-leading);
  max-width: var(--type-measure);
  text-wrap: pretty;
  margin: 0;
}

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

/* Links underline 2px and fill signal on hover — never a colour change alone. */
.sld-link {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  transition: var(--transition-control);
}

.sld-link:hover {
  background: var(--signal);
  text-decoration: none;
}

.sld-section--ink .sld-link,
.sld-footer .sld-link {
  color: var(--papier);
}

.sld-section--ink .sld-link:hover,
.sld-footer .sld-link:hover {
  background: var(--signal);
  color: var(--ink);
}

/* --- Button --------------------------------------------------------------- */

.sld-btn {
  font-family: var(--font-body);
  font-weight: var(--weight-body-strong);
  border-radius: 0;
  border: var(--border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  transition: var(--transition-control);
  letter-spacing: -0.01em;
  /* md is the default size */
  height: 48px;
  padding: 0 22px;
  font-size: 17px;
  background: var(--btn-bg);
  color: var(--btn-fg);
}

.sld-btn--sm {
  height: 36px;
  padding: 0 14px;
  font-size: 14px;
}

.sld-btn--lg {
  height: 56px;
  padding: 0 28px;
  font-size: 19px;
}

.sld-btn--block {
  width: 100%;
}

/* Hover inverts. No lift, no shrink, no shadow. Press holds the inverted state. */
.sld-btn:hover,
.sld-btn--primary:hover {
  background: var(--signal);
  color: var(--ink);
}

.sld-btn--inverted {
  background: var(--btn-bg-invert);
  color: var(--btn-fg-invert);
}

.sld-btn--inverted:hover {
  background: var(--ink);
  color: var(--signal);
}

.sld-btn--ghost {
  background: transparent;
  color: var(--ink);
}

.sld-btn--ghost:hover {
  background: var(--ink);
  color: var(--signal);
}

.sld-btn:disabled,
.sld-btn[disabled],
.sld-btn[aria-disabled="true"] {
  opacity: 0.4;
  pointer-events: none;
}

/* --- Input ---------------------------------------------------------------- */

.sld-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Labels above fields, always visible. Never a placeholder standing in. */
.sld-field__label {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: var(--type-label-tracking);
  text-transform: uppercase;
  color: var(--ink);
}

/* 48px tall, 16px text — the 16px floor is what stops iOS zooming on focus. */
.sld-input,
.sld-select,
.sld-textarea {
  height: var(--control-height);
  padding: 0 14px;
  font-size: var(--type-body-min);
  font-family: var(--font-body);
  border: var(--border);
  border-radius: 0;
  background: var(--papier);
  color: var(--ink);
  outline-offset: 2px;
  width: 100%;
  transition: var(--transition-control);
}

.sld-textarea {
  height: auto;
  min-height: 120px;
  padding: 12px 14px;
  line-height: 1.6;
}

.sld-input--mono {
  font-family: var(--font-mono);
}

.sld-input--error {
  border-color: var(--rot);
}

.sld-input::placeholder {
  color: var(--ink-500);
}

.sld-field__hint {
  font-size: 14px;
  color: var(--ink-700);
}

.sld-field__error {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rot);
}

/* --- Checkbox ------------------------------------------------------------- */

.sld-checkbox {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  cursor: pointer;
  font-size: var(--type-body-min);
  line-height: 1.5;
  color: var(--ink);
}

.sld-checkbox__box {
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border: var(--border);
  border-radius: 0;
  background: var(--papier);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: var(--transition-control);
}

/* Signal fill when checked. No tick glyph — the block is the state. */
.sld-checkbox__box:checked {
  background: var(--signal);
}

/* --- StepIndicator -------------------------------------------------------- */

.sld-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sld-step__bars {
  display: flex;
  gap: 6px;
}

.sld-step__bar {
  height: 8px;
  flex: 1;
  border: var(--border);
  background: transparent;
}

.sld-step__bar--done {
  background: var(--ink);
}

.sld-step__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: baseline;
  flex-wrap: wrap;
}

.sld-step__count {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: var(--type-label-tracking);
  text-transform: uppercase;
}

/* "Du kannst jederzeit abbrechen." — required on every funnel step. */
.sld-step__note {
  font-size: 14px;
  color: var(--ink-700);
  max-width: 52ch;
}

/* --- Card ----------------------------------------------------------------- */

.sld-card {
  border-radius: 0;
  box-shadow: var(--shadow-none);
  border: var(--border);
  padding: var(--space-5);
  background: var(--papier);
  color: var(--ink);
}

.sld-card--alt {
  background: var(--papier-2);
}

.sld-card--ink {
  background: var(--ink);
  color: var(--papier);
}

.sld-card--signal {
  background: var(--signal);
  color: var(--ink);
}

.sld-card--bare {
  border: none;
}

/* --- Label ---------------------------------------------------------------- */

.sld-label {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  line-height: var(--type-label-leading);
  letter-spacing: var(--type-label-tracking);
  text-transform: uppercase;
  padding: 6px 10px;
  display: inline-block;
  background: var(--ink);
  color: var(--signal);
}

.sld-label--signal {
  background: var(--signal);
  color: var(--ink);
}

/* Type on colour sits on a solid block, never on a fade — that is this component. */
.sld-label--bare {
  background: transparent;
  color: var(--ink-700);
  padding: 0;
}

.sld-label--on-ink {
  background: transparent;
  color: var(--ink-500);
  padding: 0;
}

/* --- Badge ---------------------------------------------------------------- */

.sld-badge {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 9px;
  display: inline-block;
  background: transparent;
  color: var(--ink);
  border: var(--border);
}

/* Gruen only ever means settled. Nothing else in the system is green. */
.sld-badge--settled {
  color: var(--gruen);
  border-color: var(--gruen);
}

.sld-badge--overdue {
  color: var(--rot);
  border-color: var(--rot);
}

.sld-badge--open {
  background: var(--signal);
  color: var(--ink);
}

/* --- Notice --------------------------------------------------------------- */

.sld-notice {
  border: var(--border);
  background: var(--papier-2);
  color: var(--ink);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sld-notice--signal {
  background: var(--signal);
}

.sld-notice--error {
  border-color: var(--rot);
  background: var(--papier);
}

.sld-notice--settled {
  border-color: var(--gruen);
  background: var(--papier);
}

.sld-notice__label {
  align-self: flex-start;
  background: var(--ink);
  color: var(--signal);
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: var(--type-label-tracking);
  text-transform: uppercase;
  padding: 5px 9px;
}

.sld-notice--error .sld-notice__label {
  background: var(--rot);
  color: var(--papier);
}

.sld-notice--settled .sld-notice__label {
  background: var(--gruen);
  color: var(--papier);
}

.sld-notice__body {
  font-size: var(--type-body-min);
  line-height: 1.55;
}

/* --- Amount --------------------------------------------------------------- */

/* Money should look counted, not promised: mono, tabular, € after the number. */
.sld-amount {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-variant-numeric: tabular-nums;
  font-size: var(--type-amount-size);
  letter-spacing: var(--type-amount-tracking);
  line-height: 1.1;
  color: var(--ink);
  white-space: nowrap;
}

.sld-amount--sm {
  font-size: 20px;
}

.sld-amount--lg {
  font-size: var(--type-amount-size-lg);
}

.sld-amount--settled {
  color: var(--gruen);
}

.sld-amount--on-ink {
  color: var(--signal);
}

/* --- Highlight ------------------------------------------------------------ */

/* The recurring device: a signal block struck over a name in a leaked list. */
.sld-highlight {
  background: var(--signal);
  color: var(--ink);
  padding: 1px 4px;
  display: inline;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.sld-highlight--block {
  padding: 2px 8px;
  display: inline-block;
}

/* --- ProofBar ------------------------------------------------------------- */

/* RDG number and BGH citation. Non-negotiable, always visible. */
.sld-proofbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--signal);
}

.sld-proofbar--paper {
  background: transparent;
  color: var(--ink-700);
  border: var(--border);
}

/* --- Logo ("Die Ungleichung") --------------------------------------------- */

/* Two bars. The top one is short (what you got), the bottom one is long (what
   they got). An equals sign that isn't equal. */
.sld-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.sld-logo__mark {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  width: 40px;
}

.sld-logo__bar {
  height: 6px;
  background: var(--ink);
}

.sld-logo__bar--short {
  width: 42%;
}

.sld-logo__bar--long {
  width: 100%;
}

.sld-logo__word {
  font-family: var(--font-display);
  font-weight: var(--weight-display);
  text-transform: uppercase;
  letter-spacing: -0.035em;
  font-size: 28px;
  line-height: 1;
  color: var(--ink);
}

/* On Ink the mark goes Signal and the wordmark goes Papier. */
.sld-logo--on-ink .sld-logo__bar {
  background: var(--signal);
}

.sld-logo--on-ink .sld-logo__word {
  color: var(--papier);
}

/* Below 40px the bars thicken and the gap widens so the imbalance survives.
   That is the only permitted optical change. */
.sld-logo--sm .sld-logo__mark {
  width: 28px;
  gap: 5px;
}

.sld-logo--sm .sld-logo__bar {
  height: 6px;
}

.sld-logo--sm .sld-logo__word {
  font-size: 20px;
}

/* --- nav ------------------------------------------------------------------ */

.sld-nav-link {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: var(--type-label-tracking);
  text-transform: uppercase;
  /* Tap targets are 48px. The label is 11px, so the box has to carry the size. */
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-target);
  padding: 0 12px;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition-control);
}

.sld-nav-link:hover,
.sld-nav-link--active {
  background: var(--ink);
  color: var(--signal);
}

/* --- header / footer ------------------------------------------------------ */

.sld-header {
  border-bottom: var(--border);
  background: var(--papier);
  position: sticky;
  top: 0;
  z-index: 10;
}

.sld-header__inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.sld-footer {
  border-top: var(--border);
  background: var(--ink);
  color: var(--papier);
}

.sld-footer__heading {
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: var(--type-label-tracking);
  text-transform: uppercase;
  color: var(--signal);
}

/* --- table ---------------------------------------------------------------- */

.sld-table {
  width: 100%;
  border-collapse: collapse;
  border: var(--border);
}

.sld-table thead th {
  background: var(--ink);
  color: var(--signal);
  font-family: var(--font-mono);
  font-weight: var(--weight-mono-strong);
  font-size: var(--type-label-size);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: left;
  padding: 10px 12px;
}

.sld-table tbody td {
  border-top: var(--border);
  padding: 12px;
  vertical-align: middle;
}

.sld-table tbody tr:nth-child(even) {
  background: var(--papier-2);
}

.sld-table__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* --- the signature motion -------------------------------------------------- */

/* On a settled case the mark's short bar grows until it matches the long one.
   500ms, ease-out, no bounce. The account balances. Once per session, on the
   confirmation screen, never as decoration. */
.sld-balance {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 260px;
}

.sld-balance__bar {
  display: block;
  height: 34px;
  background: var(--signal);
}

.sld-balance__bar--short {
  width: 42%;
  transition: width var(--duration-balance) var(--ease-out);
}

.sld-balance--settled .sld-balance__bar--short {
  width: 100%;
}

.sld-balance__bar--long {
  width: 100%;
}

@media (prefers-reduced-motion: reduce) {
  .sld-balance__bar--short {
    width: 100%;
    transition: none;
  }
}