/* VoltGuard base layer. Everything renders from theme.css - no page defines a colour. */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-surface-page);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* An author `display` rule beats the hidden attribute, which silently shows
   every element we hide by attribute. This has to win. */
[hidden] { display: none !important; }

img, svg { display: block; max-inline-size: 100%; }
h1, h2, h3, h4, p, figure, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

/* ---------------------------------------------------------------- focus */
/* One focus treatment product-wide. Outline rather than box-shadow so the ring
   never inherits the wrong gap colour on a raised surface. */
:focus-visible {
  outline: 0.1875rem solid var(--color-border-focus);
  outline-offset: 0.125rem;
  border-radius: var(--radius-xs);
}
:focus:not(:focus-visible) { outline: none; }

/* A sticky header must not cover what an anchor link jumps to (WCAG 2.4.11). */
[id] { scroll-margin-block-start: var(--space-20); }

.sr-only {
  position: absolute;
  inline-size: 1px; block-size: 1px;
  padding: 0; margin: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  inset-block-start: var(--space-2);
  inset-inline-start: var(--space-2);
  z-index: var(--z-toast);
  padding: var(--space-2) var(--space-4);
  background: var(--color-action-primary);
  color: var(--color-text-on-action);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

/* ------------------------------------------------------------ structure */
.container {
  inline-size: 100%;
  max-inline-size: var(--size-container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.section { padding-block: var(--space-24); }
.section--tight { padding-block: var(--space-16); }

.stack > * + * { margin-block-start: var(--space-4); }
.stack-lg > * + * { margin-block-start: var(--space-8); }

.row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.row--between { justify-content: space-between; }
.spacer { flex: 1 1 auto; }

.grid { display: grid; gap: var(--space-5); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(16rem, 100%), 1fr)); }

/* ----------------------------------------------------------- typography */
/* Headings hyphenate: "Lieferantenrechnungen" is wider than a hero column and
   would otherwise be clipped rather than wrapped. */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.display {
  font-size: clamp(2.25rem, 7vw, var(--text-6xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
  hyphens: auto;
  overflow-wrap: break-word;
}

h1, .h1 {
  font-size: clamp(1.875rem, 5vw, var(--text-5xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
  hyphens: auto;
  overflow-wrap: break-word;
}
h2, .h2 {
  font-size: clamp(1.5rem, 3.5vw, var(--text-4xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
  text-wrap: balance;
  hyphens: auto;
  overflow-wrap: break-word;
}
h3, .h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
}
h4, .h4 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-inline-size: var(--size-measure);
}
.prose { max-inline-size: var(--size-measure); color: var(--color-text-secondary); }
.prose p + p { margin-block-start: var(--space-4); }
.muted { color: var(--color-text-secondary); }
.subtle { color: var(--color-text-tertiary); font-size: var(--text-sm); }
.small { font-size: var(--text-sm); }

/* Every extracted number is mono: a transposed digit has to be visible. */
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--tracking-normal);
  overflow-wrap: anywhere;
}

/* --------------------------------------------------------------- icons */
.icon {
  inline-size: var(--size-icon-md);
  block-size: var(--size-icon-md);
  flex: none;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon--sm { inline-size: var(--size-icon-sm); block-size: var(--size-icon-sm); }
.icon--lg { inline-size: var(--size-icon-lg); block-size: var(--size-icon-lg); }

/* ------------------------------------------------------------ surfaces */
.card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.panel {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
}
.hr {
  block-size: 1px;
  background: var(--color-border-default);
  border: 0;
  margin-block: var(--space-8);
}

/* ------------------------------------------------------------- buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-block-size: var(--size-tap-min);
  min-inline-size: var(--size-tap-min);
  padding-inline: var(--space-5);
  background: var(--color-action-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.btn:hover { background: var(--color-action-secondary-hover); }
.btn:active { background: var(--color-action-secondary-active); transform: translateY(0.0625rem); }

.btn--primary {
  background: var(--color-action-primary);
  color: var(--color-text-on-action);
  border-color: var(--color-action-primary);
  font-weight: var(--weight-semibold);
  box-shadow: var(--shadow-glow);
}
.btn--primary:hover { background: var(--color-action-primary-hover); border-color: var(--color-action-primary-hover); }
.btn--primary:active { background: var(--color-action-primary-active); border-color: var(--color-action-primary-active); }

.btn--danger {
  background: var(--color-action-destructive);
  color: var(--color-text-on-dark);
  border-color: var(--color-action-destructive);
  font-weight: var(--weight-semibold);
}
.btn--danger:hover { background: var(--color-action-destructive-hover); border-color: var(--color-action-destructive-hover); }
.btn--danger:active { background: var(--color-action-destructive-hover); border-color: var(--color-action-destructive-hover); }

.btn--quiet {
  background: transparent;
  border-color: transparent;
  color: var(--color-text-secondary);
}
.btn--quiet:hover { background: var(--color-interactive-hover-overlay); color: var(--color-text-primary); }
.btn--quiet:active { background: var(--color-interactive-active-overlay); }

.btn--sm { min-block-size: var(--size-control-sm); padding-inline: var(--space-3); font-size: var(--text-xs); }
.btn--lg { min-block-size: var(--size-control-lg); padding-inline: var(--space-6); font-size: var(--text-base); }
.btn--block { inline-size: 100%; }

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  pointer-events: none;
}

/* Loading keeps full strength - dimming would read as "you cannot do this". */
.btn[aria-busy="true"] { pointer-events: none; }
.btn[aria-busy="true"] .btn__label { visibility: hidden; }
.btn[aria-busy="true"]::after {
  content: "";
  position: absolute;
  inline-size: var(--size-icon-md);
  block-size: var(--size-icon-md);
  border: 0.125rem solid currentColor;
  border-block-start-color: transparent;
  border-radius: var(--radius-pill);
  animation: vg-spin var(--duration-slow) linear infinite;
}

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

/* ---------------------------------------------------------- status pills */
/* Colour is never the signal on its own: every pill carries an icon and a word. */
.status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border: 1px solid;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  white-space: nowrap;
}
.status--verified {
  background: var(--color-feedback-success-bg);
  color: var(--color-feedback-success-text);
  border-color: var(--color-feedback-success-border);
}
.status--review {
  background: var(--color-feedback-warning-bg);
  color: var(--color-feedback-warning-text);
  border-color: var(--color-feedback-warning-border);
}
.status--blocked {
  background: var(--color-feedback-error-bg);
  color: var(--color-feedback-error-text);
  border-color: var(--color-feedback-error-border);
}
.status--pending {
  background: var(--color-surface-raised);
  color: var(--color-text-secondary);
  border-color: var(--color-border-default);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-pill);
  background: var(--color-surface-raised);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
}

/* ---------------------------------------------------------------- forms */
.field { display: block; }
.field + .field { margin-block-start: var(--space-4); }

.label {
  display: block;
  margin-block-end: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
}

.input {
  inline-size: 100%;
  min-inline-size: 0;
  min-block-size: var(--size-control-md);
  padding: var(--space-2) var(--space-3);
  background: var(--color-input-bg);
  color: var(--color-input-text);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--duration-fast) var(--ease-out);
}
.input::placeholder { color: var(--color-input-placeholder); }
.input:hover { border-color: var(--color-text-tertiary); }
.input[aria-invalid="true"] { border-color: var(--color-input-border-error); }
.input:disabled { background: var(--color-surface-disabled); opacity: var(--opacity-disabled); }

.hint { margin-block-start: var(--space-2); font-size: var(--text-sm); color: var(--color-text-tertiary); }
.error-text {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-block-start: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-feedback-error-text);
}
.ok-text {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-block-start: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-feedback-success-text);
}

/* --------------------------------------------------------------- motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: var(--duration-reduced) !important;
    animation-iteration-count: 1 !important;
    transition-duration: var(--duration-reduced) !important;
  }
}

/* --------------------------------------------------- centred auth card */
/* Shared by the site access page and the application sign-in. */
/* The card owns the viewport rather than floating under the header. */
.authpage {
  display: grid;
  place-items: center;
  min-block-size: 70vh;
  padding: var(--space-12) var(--space-5);
}
.authcard {
  inline-size: 100%;
  max-inline-size: 27rem;
  padding: var(--space-8);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  background: var(--color-surface-card);
  box-shadow: var(--shadow-lg);
}
.authcard > * + * { margin-block-start: var(--space-4); }
.authcard h1 { font-size: var(--text-2xl); }
.authform { margin-block-start: var(--space-6); }
.authform .btn { margin-block-start: var(--space-5); }
.authcard__foot { text-align: center; }
.authcard__foot a { color: var(--color-text-link); text-decoration: underline; }
.authcard__foot a:hover { color: var(--color-text-link-hover); }

/* --------------------------------------------------------- wordmark */
/* Shared: the application header carries the same mark as the site, and
   only the site used to load these rules. */
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-heading);
  color: var(--color-text-primary);
}
.wordmark__mark {
  display: grid;
  place-items: center;
  inline-size: var(--size-icon-lg);
  block-size: var(--size-icon-lg);
  border-radius: var(--radius-xs);
  background: var(--color-action-primary);
  color: var(--color-text-on-action);
}

.wordmark__by {
  margin-inline-start: var(--space-2);
  padding-inline-start: var(--space-2);
  border-inline-start: 1px solid var(--color-border-default);
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
  color: var(--color-text-tertiary);
  letter-spacing: var(--tracking-normal);
}
@media (max-width: 559px) { .wordmark__by { display: none; } }