:root {
  --pink: #EC008C;
  --black: #141414;
  --gray-bg: #F2F2F2;
  --gray-text: #8A8A8A;
  --border: #E4E4E4;
}

* { box-sizing: border-box; }
body { font-family: Helvetica, Arial, sans-serif; margin: 0; color: var(--black); background: #fff; }
.hidden { display: none !important; }

/* --- Login --- */
.login-page { display: flex; align-items: center; justify-content: center; height: 100vh; background: var(--gray-bg); }
.login-box { background: #fff; padding: 2.5rem; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); width: 320px; display: flex; flex-direction: column; gap: 1rem; }
.login-box h1 { font-size: 1.2rem; margin: 0 0 0.5rem; }
.login-box label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; }
.login-box input { padding: 0.6rem; border: 1px solid var(--border); border-radius: 4px; font-size: 1rem; }
.login-box button { background: var(--black); color: #fff; border: none; padding: 0.7rem; border-radius: 4px; cursor: pointer; font-weight: bold; }
.error { color: var(--pink); font-size: 0.85rem; min-height: 1.2em; }

/* --- Kopfzeile mit Tabs --- */
.topnav { display: flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1.5rem; border-bottom: 1px solid var(--border); }
.topnav__logo { height: 28px; margin-right: 0.5rem; }
.topnav__logout { margin-left: auto; }
.tab-btn { background: none; border: 1px solid var(--border); border-radius: 20px; padding: 0.5rem 1.2rem; font-size: 0.9rem; cursor: pointer; color: var(--black); }
.tab-btn--active { background: var(--black); color: #fff; border-color: var(--black); }
.link-btn { background: none; border: none; color: var(--pink); cursor: pointer; font-size: 0.85rem; padding: 0.3rem 0; }
.hint { color: var(--gray-text); font-size: 0.8rem; }

/* --- App-Layout: Formular links, Live-Vorschau rechts (wie bei der Rechnung) --- */
.app { display: grid; grid-template-columns: 1fr 1fr; height: calc(100vh - 57px); }
.form-panel { padding: 1.5rem 2rem; max-width: 640px; overflow-y: auto; }
.preview-panel { padding: 1.5rem; overflow-y: auto; background: var(--gray-bg); display: flex; justify-content: center; border-left: 1px solid var(--border); }
.form-panel label { display: block; margin: 1rem 0 0.3rem; font-size: 0.85rem; color: #444; }
.form-panel input, .form-panel select { width: 100%; padding: 0.6rem; border: 1px solid var(--border); border-radius: 4px; font-size: 0.95rem; }

/* --- Live-Vorschau: spiegelt das PDF-Layout des Vertrags --- */
.contract-preview { background: #fff; width: 100%; max-width: 620px; padding: 2rem; box-shadow: 0 1px 6px rgba(0,0,0,0.1); font-size: 0.8rem; height: fit-content; }
.preview-logo { display: block; margin: 0 auto 0.4rem; height: 40px; }
.preview-subtitle { text-align: center; color: var(--gray-text); margin: 0 0 1rem; font-size: 0.8rem; }
.preview-addr-row { display: flex; gap: 1rem; margin-bottom: 1rem; }
.preview-box { flex: 1; border: 1px solid var(--black); border-radius: 4px; padding: 0.6rem 0.8rem; line-height: 1.5; transition: box-shadow 0.15s, border-color 0.15s; }
.preview-title { font-size: 1.1rem; margin: 1rem 0 0.5rem; }
.preview-h { font-size: 0.85rem; margin: 0.9rem 0 0.3rem; }
.preview-p { margin: 0 0 0.4rem; line-height: 1.4; }
.preview-list { margin: 0 0 0.4rem; padding-left: 1.1rem; line-height: 1.4; }
.preview-list li { margin-bottom: 0.2rem; }
.preview-checkbox { margin: 0.6rem 0; }
.preview-hint { color: var(--gray-text); font-size: 0.75rem; margin: 0.6rem 0; }
.preview-raten-table { width: 100%; border-collapse: collapse; margin: 0 0 0.6rem; font-size: 0.75rem; }
.preview-raten-table td { border: 1px solid var(--border); padding: 0.25rem 0.5rem; }
.preview-sig-row { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1.2rem; padding-top: 0.4rem; border-top: 1px solid var(--gray-text); font-style: italic; color: var(--gray-text); }
.preview-footer-hint { color: var(--gray-text); font-size: 0.7rem; margin-top: 1rem; }

/* Feld, das gerade bearbeitet wird -> im Preview hervorheben */
.highlight { outline: 2px solid var(--pink); outline-offset: 2px; border-radius: 3px; background: #FFF0F8; }

fieldset { border: 1px solid var(--border); border-radius: 6px; margin: 1.2rem 0; padding: 0.8rem 1rem; }
fieldset legend { padding: 0 0.4rem; font-weight: bold; font-size: 0.85rem; }
fieldset label { margin-right: 0; }

.readonly-block { background: var(--gray-bg); border-radius: 4px; padding: 1rem 1.2rem; margin-top: 1rem; font-size: 0.9rem; }

button.primary { margin-top: 1.5rem; width: 100%; background: var(--pink); color: #fff; border: none; padding: 0.8rem; border-radius: 4px; font-weight: bold; font-size: 1rem; cursor: pointer; }

table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; }
table th, table td { border: 1px solid var(--border); padding: 0.5rem; font-size: 0.85rem; text-align: left; }
table th { background: var(--gray-bg); }

/* --- Signierseite (Kunde) --- */
.sign-page { background: var(--gray-bg); min-height: 100vh; }
.sign-wrap { max-width: 720px; margin: 0 auto; padding: 2rem 1.2rem 4rem; }
.sign-logo { height: 36px; display: block; margin: 0 auto 1.5rem; }
.sign-wrap h1 { font-size: 1.3rem; }
.pdf-frame { width: 100%; height: 60vh; border: 1px solid var(--border); border-radius: 6px; background: #fff; margin: 1rem 0; }
.checkbox-row { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.9rem; margin: 0.8rem 0; }
.checkbox-row input { width: auto; margin-top: 0.2rem; }

/* =====================================================================
   Smartphone
   ===================================================================== */
@media (max-width: 767px) {
  .app { grid-template-columns: 1fr; height: auto; }
  .preview-panel { display: none; }
  .form-panel { padding: 1rem; overflow-y: visible; }
  .topnav { flex-wrap: wrap; gap: 0.4rem; padding: 0.7rem 1rem; }
  .tab-btn { padding: 0.5rem 0.9rem; font-size: 0.85rem; }

  .form-panel input, .form-panel select { font-size: 16px; padding: 0.7rem; }
  button.primary { padding: 1rem; }
  fieldset { padding: 0.7rem 0.8rem; }

  .pdf-frame { height: 45vh; }
  .login-box { width: 100%; max-width: 340px; padding: 1.8rem; }

  table { display: block; overflow-x: auto; white-space: nowrap; }
}