/* Sign-Service Stylesheet — Goebel-Designsystem-Tokens 1:1 aus app_theme.dart */

/* === Schriften (selbst gehostet) === */
@font-face {
  font-family: "Barlow Semi Condensed";
  src: url("/vendor/fonts/barlow-semicondensed-v15-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("/vendor/fonts/dm-sans-v15-latin-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("/vendor/fonts/dm-sans-v15-latin-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("/vendor/fonts/dm-sans-v15-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* === Design-Tokens (Goebel-System) === */
:root {
  /* Brand */
  --color-primary: #006DB6;
  --color-primary-dark: #005291;
  --color-primary-tint: #EAF4FC;
  --color-accent: #F49712;
  --color-accent-dark: #D4820E;
  --color-dark: #0D1C35;

  /* Neutrals */
  --color-bg: #F3F6FA;
  --color-surface: #FFFFFF;
  --color-text: #0C1B2D;
  --color-text-muted: #4A6078;
  --color-text-faint: #7A96AE;
  --color-border-light: #DDE9F4;
  --color-border: #C5D8E8;

  /* Semantic */
  --color-success-bg: #ECFDF5;
  --color-success-fg: #065F46;
  --color-success-border: #A7F3D0;
  --color-warning-bg: #FFFBEB;
  --color-warning-fg: #92400E;
  --color-warning-border: #FDE68A;
  --color-error-bg: #FEF2F2;
  --color-error-fg: #991B1B;
  --color-error-border: #FECACA;

  /* Schatten */
  --shadow-sm: 0 2px 8px rgba(0, 45, 90, 0.08);
  --shadow-md: 0 6px 16px rgba(0, 45, 90, 0.10);
  --shadow-sheet: 0 -8px 32px rgba(0, 45, 90, 0.18);

  /* Radii */
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-sheet: 24px;
  --radius-btn: 10px;
  --radius-full: 999px;

  /* Spacing */
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  /* Hit-Targets */
  --hit-min: 44px;
  --hit-comfy: 56px;

  /* Typografie */
  --font-display: "Barlow Semi Condensed", system-ui, -apple-system, sans-serif;
  --font-body:    "DM Sans", system-ui, -apple-system, sans-serif;
  --type-h1:      600 22px/1.2 var(--font-display);   /* mobile */
  --type-h1-lg:   600 28px/1.15 var(--font-display);  /* desktop > 900 */
  --type-h2:      600 19px/1.2 var(--font-display);
  --type-body:    400 15px/1.5 var(--font-body);
  --type-body-lg: 400 16px/1.5 var(--font-body);
  --type-small:   400 13px/1.45 var(--font-body);
  --type-label:   600 13px/1 var(--font-body);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font: var(--type-body);
  -webkit-font-smoothing: antialiased;
  /* Safety-Net gegen horizontales Scrollen — falls eine Komponente
     (z.B. PDF-Canvas, lange E-Mail-Adresse) die Viewport-Breite ueberlaeuft,
     darf das nicht die ganze Page horizontal scrollbar machen. */
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--color-primary); }
a:hover { color: var(--color-primary-dark); }

/* === App-Bar === */
.app-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-4);
}
.app-bar__logo {
  height: 28px;
  width: auto;
}
.app-bar__divider {
  width: 1px;
  height: 24px;
  background: var(--color-border-light);
}
.app-bar__title {
  font: var(--type-label);
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* === Page-Wrapper === */
.sign-page {
  min-height: 100dvh;
  min-height: 100vh; /* Fallback für Browser ohne dvh */
}
.sign-page__main {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}
@media (min-width: 901px) {
  .sign-page__main {
    max-width: 1200px;
  }
}

/* === Info-Card (index.html) === */
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.info-card__h1 {
  font: var(--type-h1);
  margin: 0 0 var(--space-3);
  color: var(--color-text);
}
@media (min-width: 901px) {
  .info-card__h1 { font: var(--type-h1-lg); }
}
.info-card p {
  font: var(--type-body);
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}
.info-card__divider {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: var(--space-5) 0 var(--space-3);
}
.info-card__fineprint {
  font: var(--type-small);
  color: var(--color-text-muted);
}

/* === Status-Pages (signed/expired/cancelled/unavailable/noscript) === */
.status-page {
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  min-height: calc(100dvh - 56px);
  min-height: calc(100vh - 56px);
}
.status-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-8) var(--space-6);
  max-width: 480px;
  width: 100%;
  display: grid;
  gap: var(--space-4);
  justify-items: center;
}
.status-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  display: grid;
  place-items: center;
}
.status-icon svg { width: 32px; height: 32px; }
.status-icon--success { background: var(--color-success-bg); color: var(--color-success-fg); border: 1px solid var(--color-success-border); }
.status-icon--warning { background: var(--color-warning-bg); color: var(--color-warning-fg); border: 1px solid var(--color-warning-border); }
.status-icon--error   { background: var(--color-error-bg);   color: var(--color-error-fg);   border: 1px solid var(--color-error-border); }
.status-h1 {
  font: var(--type-h1);
  margin: 0;
  color: var(--color-text);
}
.status-body {
  font: var(--type-body);
  color: var(--color-text-muted);
  margin: 0;
}
.status-hint {
  font: var(--type-small);
  color: var(--color-text-faint);
  margin: 0;
}

/* === Linke Spalte (Mobile: einzige Spalte, Desktop: 1fr-Spalte) === */
.sign-content {
  display: grid;
  gap: var(--space-4);
}

/* === Greeting-Karte === */
.greeting-card {
  background: var(--color-primary-tint);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.greeting-card__h1 {
  font: var(--type-h1);
  margin: 0 0 var(--space-2);
  color: var(--color-text);
}
@media (min-width: 901px) {
  .greeting-card__h1 { font: var(--type-h1-lg); }
}
.greeting-card__body {
  font: var(--type-body);
  color: var(--color-text);
  margin: 0;
  overflow-wrap: anywhere;          /* lange Tokens (URLs, IDs) brechen sauber um */
}

/* === PDF-Viewer (native via <iframe>) === */
.pdf-area {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}
.pdf-frame {
  display: block;
  width: 100%;
  height: 75vh;             /* genug Höhe damit der native Viewer zum Scrollen einlädt */
  border: none;
  background: var(--color-bg);
}
.pdf-fallback {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  font: var(--type-small);
  color: var(--color-text-muted);
  text-align: center;
  border-top: 1px solid var(--color-border-light);
  background: var(--color-surface);
}
.pdf-fallback a { color: var(--color-primary); font-weight: 600; }
.scroll-hint {
  text-align: center;
  font: var(--type-small);
  color: var(--color-text-faint);
  padding: var(--space-3) 0;
}
@media (min-width: 901px) {
  .scroll-hint { display: none; } /* auf Desktop steht das Sheet rechts, kein Hinweis nötig */
}

/* === Signatur-Sheet ===
   Mobile: relative am Ende des Flows — erscheint erst beim Runterscrollen,
   PDF bleibt initial vollständig lesbar. Desktop: Sticky-Right-Panel. */
.signature-sheet {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
}
.signature-sheet__h2 {
  font: var(--type-h2);
  margin: 0;
  color: var(--color-text);
}

@media (min-width: 901px) {
  .sign-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: var(--space-6);
    align-items: start;
  }
  .signature-sheet {
    position: sticky;
    top: calc(56px + var(--space-6));
  }
}

/* === Signatur-Pad === */
.signature-pad-wrap {
  position: relative;
  border: 2px dashed var(--color-border-light);
  border-radius: var(--radius-md);
  background: #fff;
  transition: border-color 0.15s, border-style 0.15s;
}
.signature-sheet:focus-within .signature-pad-wrap {
  border-color: var(--color-primary);
  border-style: solid;
}
.signature-pad {
  display: block;
  width: 100%;
  height: 180px;
  touch-action: none;
  outline: none;
}
.signature-pad:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}
.signature-watermark {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font: var(--type-body);
  color: var(--color-text-faint);
  pointer-events: none;
}
.signature-pad-wrap.is-filled .signature-watermark { display: none; }
.signature-clear {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font: var(--type-small);
  cursor: pointer;
  padding: var(--space-2);
}
.signature-clear:hover { color: var(--color-primary); }
.signature-hint {
  font: var(--type-small);
  color: var(--color-text-muted);
  margin: 0;
}

/* === Form-Felder === */
.field {
  display: grid;
  gap: var(--space-2);
}
.field__label {
  font: var(--type-label);
  color: var(--color-text-muted);
}
.field__required {
  color: var(--color-accent);
  margin-left: 2px;
}
.field__input {
  font: var(--type-body);
  height: var(--hit-min);
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
}
.field__input:focus {
  border-color: var(--color-primary);
  outline: 2px solid rgba(0, 109, 182, 0.25);                                  /* Fallback Safari 15 */
  outline: 2px solid color-mix(in srgb, var(--color-primary) 25%, transparent);
}
.field__input[readonly] {
  background: var(--color-primary-tint);
  cursor: default;
  color: var(--color-text);
}
/* E-Mail-Adressen können lang sein — min-width 0 verhindert dass das Input
   sich über die Container-Breite hinaus aufzieht (default min-width: auto
   = "min-content" der Mail-Adresse, bei langen Adressen problematisch). */
.field__input--email { min-width: 0; }

/* === Submit-Button === */
.btn {
  font: var(--type-label);
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  padding: 0 var(--space-4);
  height: var(--hit-min);
  cursor: pointer;
  transition: background-color 0.15s, opacity 0.15s;
}
.btn--primary {
  background: var(--color-primary);
  color: #fff;
  height: var(--hit-comfy);
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.btn--primary:hover:not(:disabled) { background: var(--color-primary-dark); }
.btn--primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.btn--primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn__spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: var(--radius-full);
  animation: btn-spin 0.7s linear infinite;
  display: none;
}
.btn--primary[aria-busy="true"] .btn__spinner { display: inline-block; }
@keyframes btn-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* === Inline-Error-Box === */
.error-box {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-fg);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font: var(--type-body);
}