* {
  box-sizing: border-box;
}

:root {
  --background: #eef2ef;
  --panel: #ffffff;
  --text: #203029;
  --muted: #617067;
  --line: #b5c4ba;
  --border: #d9e2db;
  --accent: #3e6a50;
  --accent-soft: #e8f0ea;
}

html,
body {
  min-height: 100%;
  margin: 0;
.auth-panel {
  width: min(100%, 420px);
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 12px 36px rgba(32, 48, 41, 0.08);
}

.auth-eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.auth-panel h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.9rem;
  font-weight: 500;
}

.auth-intro {
  margin: 10px 0 26px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.auth-form {
  display: grid;
  gap: 10px;
}

.auth-form label {
  font-size: 0.82rem;
  font-weight: 600;
}

.auth-form input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
}

.auth-form input:focus-visible {
  outline: 3px solid #9ab6a1;
  outline-offset: 2px;
}

.auth-submit,
.auth-secondary {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
}

.auth-submit {
  margin-top: 6px;
  background: var(--accent);
  color: #ffffff;
}

.auth-submit:hover {
  background: #31563f;
}

.auth-submit:disabled {
  cursor: wait;
  opacity: 0.65;
}

.auth-secondary {
  border-color: transparent;
  background: transparent;
  color: var(--accent);
}

.auth-message {
  min-height: 1.4em;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}
}

body {
  background: var(--background);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
}

[hidden] {
  display: none !important;
}

.auth-screen {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}

.auth-panel {
  width: min(100%, 420px);
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 12px 36px rgba(32, 48, 41, 0.08);
}

.auth-eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.auth-panel h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.9rem;
  font-weight: 500;
}

.auth-intro {
  margin: 10px 0 26px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.auth-form {
  display: grid;
  gap: 10px;
}

.auth-form label {
  font-size: 0.82rem;
  font-weight: 600;
}

.auth-form input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
}

.auth-form input:focus-visible {
  outline: 3px solid #9ab6a1;
  outline-offset: 2px;
}

.auth-submit,
.auth-secondary {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
}

.auth-submit {
  margin-top: 6px;
  background: var(--accent);
  color: #ffffff;
}

.auth-submit:hover {
  background: #31563f;
}

.auth-submit:disabled {
  cursor: wait;
  opacity: 0.65;
}

.auth-secondary {
  border-color: transparent;
  background: transparent;
  color: var(--accent);
}

.auth-message {
  min-height: 1.4em;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(238, 242, 239, 0.96);
  backdrop-filter: blur(8px);
}

.header-title h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2rem;
  font-weight: 500;
}

.header-title p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.controls {
  display: flex;
  gap: 10px;
}

.controls button {
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.controls button:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.controls button:focus-visible,
.person-toggle:focus-visible {
  outline: 3px solid #9ab6a1;
  outline-offset: 2px;
}

.quiz-dialog {
  width: min(680px, calc(100vw - 32px));
  max-width: none;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 24px 70px rgba(15, 30, 21, 0.28);
}

.quiz-dialog::backdrop {
  background: rgba(21, 34, 27, 0.58);
  backdrop-filter: blur(3px);
}

.quiz-content {
  padding: 28px;
}

.quiz-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.quiz-label {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.quiz-header h2,
.quiz-result h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

.quiz-header h2 {
  font-size: 1.8rem;
}

.quiz-close {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 0.75rem;
  cursor: pointer;
}

.quiz-progress {
  margin: 28px 0 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.quiz-prompt {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
}

.quiz-photo {
  display: block;
  width: 132px;
  height: 132px;
  margin: 20px auto;
  border: 3px solid var(--accent-soft);
  border-radius: 50%;
  object-fit: cover;
}

.quiz-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.quiz-choices button,
.quiz-next {
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.quiz-choices button:hover:not(:disabled),
.quiz-next:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.quiz-choices button:disabled {
  cursor: default;
  opacity: 0.95;
}

.quiz-choices button.is-correct {
  border-color: #579167;
  background: #e4f1e6;
  color: #245b32;
}

.quiz-choices button.is-wrong {
  border-color: #c27d74;
  background: #f9e9e7;
  color: #8c3027;
}

.quiz-feedback {
  min-height: 1.5em;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.quiz-feedback.is-correct {
  color: #2e7040;
}

.quiz-feedback.is-wrong {
  color: #96382e;
}

.quiz-next {
  margin-top: 16px;
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.quiz-next:hover {
  background: #31563f;
  color: #ffffff;
}

.quiz-result h3 {
  margin-top: 4px;
  font-size: 2rem;
}

.quiz-answers {
  display: grid;
  gap: 10px;
  max-height: 340px;
  margin: 22px 0 0;
  padding: 0 4px 0 24px;
  overflow: auto;
}

.quiz-answer {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border-left: 3px solid var(--border);
  font-size: 0.82rem;
  line-height: 1.4;
}

.quiz-answer.is-correct {
  border-color: #579167;
  background: #f0f7f1;
}

.quiz-answer.is-wrong {
  border-color: #c27d74;
  background: #fcf1ef;
}

.quiz-answer span {
  color: var(--muted);
}

.tree-wrapper {
  width: 100%;
  overflow: auto;
  padding: 32px 20px 80px;
}

.tree {
  position: relative;
  display: flex;
  width: max-content;
  min-width: 1100px;
  flex-direction: column;
  gap: 24px;
}

.connections {
  position: absolute;
  z-index: 0;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.connection {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.generation {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 90px;
  padding: 0 40px 18px;
}

.family-group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.couple {
  display: flex;
  align-items: center;
  gap: 8px;
}

.couple-line {
  width: 16px;
  height: 1px;
  background: var(--line);
}

.person {
  position: relative;
  width: 150px;
  min-height: 132px;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  text-align: center;
  box-shadow: 0 3px 10px rgba(32, 48, 41, 0.05);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.person:hover {
  transform: translateY(-2px);
  border-color: #b9cbbd;
  box-shadow: 0 8px 18px rgba(32, 48, 41, 0.09);
}

.person.is-family-member {
  border: 2px solid #8caf95;
}

.person.is-family-member:hover {
  border-color: var(--accent);
}

.person-photo {
  display: block;
  width: 52px;
  height: 52px;
  margin: 0 auto 6px;
  border-radius: 50%;
  background: #e9eeea;
  object-fit: cover;
}

.person-name {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.3;
}

.person-open {
  display: flex;
  width: 100%;
  min-height: 106px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 20px 4px 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.person-open:focus-visible {
  border-radius: 8px;
  outline: 3px solid #9ab6a1;
  outline-offset: 1px;
}

.person.has-children::after {
  display: block;
  width: 6px;
  height: 6px;
  margin: 10px auto 0;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.person-toggle {
  position: absolute;
  top: 9px;
  right: 9px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--panel);
  color: var(--accent);
  cursor: pointer;
}

.person-toggle:hover {
  background: var(--accent-soft);
}

.person-toggle span {
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.16s ease;
}

.person-toggle[aria-expanded="false"] span {
  margin-top: 0;
  transform: rotate(-45deg);
}

.person-dialog {
  width: min(560px, calc(100vw - 32px));
  max-width: none;
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 14px;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 24px 70px rgba(15, 30, 21, 0.28);
}

.person-dialog::backdrop {
  background: rgba(21, 34, 27, 0.58);
  backdrop-filter: blur(3px);
}

.person-dialog-content {
  position: relative;
  display: grid;
  min-height: 250px;
  grid-template-columns: 220px 1fr;
  align-items: center;
}

.person-dialog-photo {
  width: 220px;
  height: 250px;
  border-radius: 14px 0 0 14px;
  background: #e9eeea;
  object-fit: cover;
}

.person-dialog-details {
  padding: 28px;
}

.person-dialog-label {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.person-dialog-details h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.8rem;
  font-weight: 500;
}

.person-dialog-birth {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.person-dialog-contacts {
  display: grid;
  gap: 8px;
  margin-top: 24px;
}

.person-dialog-contact {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 8px;
  margin: 0;
  font-size: 0.82rem;
}

.person-dialog-contact span {
  color: var(--muted);
}

.person-dialog-contact a {
  min-width: 0;
  color: var(--accent);
  overflow-wrap: anywhere;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.person-dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 0.75rem;
  cursor: pointer;
}

.person-dialog-close:focus-visible {
  outline: 3px solid #9ab6a1;
  outline-offset: 2px;
}

.children {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin-top: 34px;
  gap: 90px;
}

.message {
  padding: 40px 20px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 700px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 20px;
  }

  .controls {
    width: 100%;
  }

  .controls button {
    flex: 1;
  }

  .quiz-content {
    padding: 22px;
  }

  .quiz-choices {
    grid-template-columns: 1fr;
  }

  .tree-wrapper {
    padding: 24px 10px 60px;
  }

  .generation {
    gap: 30px;
    padding-right: 16px;
    padding-left: 16px;
  }
}

@media (max-width: 480px) {
  .auth-panel {
    padding: 28px 22px;
  }

  .person-dialog-content {
    grid-template-columns: 1fr;
  }

  .person-dialog-photo {
    width: 100%;
    height: min(60vw, 240px);
    border-radius: 14px 14px 0 0;
  }

  .person-dialog-details {
    padding: 20px;
  }

  .person-dialog-details h2 {
    padding-right: 62px;
    font-size: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}