:root {
  --bg: #dcdcdf;
  --panel: #fdfdfe;
  --line: #ececec;
  --label: #8a8d94;
  --text: #17171a;
  --link: #1680f2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang TC", "PingFang SC", "SF Pro Display", "Avenir Next", sans-serif;
}

body.modal-open {
  overflow: hidden;
}

.preview-page {
  width: min(100%, 780px);
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 2.2rem) clamp(1rem, 4vw, 2.4rem) 3rem;
}

.loading-state {
  margin-top: 1.25rem;
  min-height: 240px;
  border-radius: 20px;
  border: 1px solid #e9e9ea;
  background: var(--panel);
  display: grid;
  place-items: center;
  gap: 0.8rem;
  padding: 1.6rem;
}

.loading-state[hidden] {
  display: none;
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 3px solid #d4d8e2;
  border-top-color: #5575af;
  animation: spin 0.72s linear infinite;
}

.loading-text {
  margin: 0;
  color: #5c616c;
  font-size: 0.95rem;
  font-weight: 600;
}

.business-card {
  margin-bottom: 1rem;
  background: #f7f7f8;
  border: 1px solid #e5e5e8;
  border-radius: 20px;
  padding: 0.8rem;
}

.business-card-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.55rem;
}

.business-card-title {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 700;
  color: #33353a;
}

.card-face-indicator {
  margin: 0;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #3f4859;
  background: #e6ebf5;
  border: 1px solid #d6deec;
  border-radius: 999px;
  padding: 0.15rem 0.52rem;
}

.business-card-art {
  background: #fffefe;
  border-radius: 14px;
  padding: 0.5rem;
  border: 1px solid #dbdbdf;
  overflow: hidden;
  min-height: 180px;
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.card-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
}

.card-image-fallback {
  margin: 0;
  width: 100%;
  aspect-ratio: 1.67 / 1;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: #1d548b;
  position: relative;
  overflow: hidden;
  padding: 1rem;
}

.card-fallback-name {
  position: absolute;
  margin: 0;
  font-size: clamp(1.35rem, 5vw, 2.65rem);
  line-height: 1.15;
  font-weight: 700;
}

.card-fallback-meta {
  position: absolute;
  margin: 0;
  font-size: clamp(1rem, 3.5vw, 1.8rem);
  line-height: 1.2;
  font-weight: 500;
  opacity: 0.95;
}

.card-image-fallback.is-front .card-fallback-name {
  top: 1rem;
  left: 1rem;
  right: 1rem;
  text-align: left;
}

.card-image-fallback.is-front .card-fallback-meta {
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  text-align: left;
}

.card-image-fallback.is-back .card-fallback-name {
  top: 1rem;
  right: 1rem;
  left: 1rem;
  text-align: right;
}

.card-image-fallback.is-back .card-fallback-meta {
  top: 4.1rem;
  left: 1rem;
  right: 1rem;
  text-align: left;
}

.card-image[hidden],
.card-image-fallback[hidden] {
  display: none;
}

.flip-button {
  margin-left: auto;
  min-width: 96px;
  border: 1px solid #c2ccdd;
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: #eef3ff;
  color: #273753;
  font-weight: 600;
  font-size: 0.78rem;
  cursor: pointer;
  transition: background-color 0.18s ease;
}

.flip-button:hover {
  background: #e4ecff;
}

.flip-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.info-card {
  background: var(--panel);
  border-radius: 20px;
  border: 1px solid #e9e9ea;
  overflow: hidden;
  margin-top: 1.25rem;
}

.more-positions-card {
  margin-top: 1.25rem;
  background: var(--panel);
  border: 1px solid #e9e9ea;
  border-radius: 20px;
  overflow: hidden;
}

.more-positions-toggle {
  width: 100%;
  border: 0;
  padding: 1.2rem 1.5rem;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: clamp(1.1rem, 2.8vw, 2.95rem);
  font-weight: 700;
  line-height: 1.2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  cursor: pointer;
}

.more-positions-icon {
  font-size: clamp(1.28rem, 3.2vw, 3.1rem);
  line-height: 1;
  color: #5e6067;
  transition: transform 0.2s ease;
}

.more-positions-toggle[aria-expanded="true"] .more-positions-icon {
  transform: rotate(180deg);
}

.more-positions-content {
  border-top: 1px solid var(--line);
  padding: 0.8rem;
}

.more-position-item {
  border: 1px solid #dfdfe2;
  border-radius: 18px;
  background: #f2f2f5;
  overflow: hidden;
}

.more-position-item + .more-position-item {
  margin-top: 0.95rem;
}

.more-position-row {
  padding: 1.08rem 1.15rem;
}

.more-position-row + .more-position-row {
  border-top: 1px solid #dfdfe2;
}

.more-position-label {
  margin: 0;
  color: #757882;
  font-size: clamp(0.86rem, 2.2vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.more-position-value {
  margin: 0.35rem 0 0;
  color: var(--text);
  font-size: clamp(1.1rem, 2.8vw, 2.95rem);
  line-height: 1.3;
  word-break: break-word;
}

.info-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0.75rem;
  align-items: center;
  padding: 1.4rem 1.5rem;
}

.info-row + .info-row {
  border-top: 1px solid var(--line);
}

.label,
.value {
  margin: 0;
}

.label {
  font-size: clamp(1.05rem, 2.6vw, 2.8rem);
  color: var(--label);
}

.value {
  text-align: right;
  font-size: clamp(1.1rem, 2.8vw, 2.95rem);
  color: var(--text);
  line-height: 1.35;
  word-break: break-word;
}

.value-link {
  color: var(--link);
}

.contact-values {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.28rem;
}

.contact-value-line {
  display: block;
}

.phone-display-item {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.34rem;
}

.phone-flag {
  line-height: 1;
}

.phone-number {
  white-space: nowrap;
}

.error-modal {
  position: fixed;
  inset: 0;
  background: rgba(22, 25, 32, 0.45);
  display: grid;
  place-items: center;
  padding: 1rem;
  z-index: 40;
}

.error-modal[hidden] {
  display: none;
}

.error-modal-box {
  width: min(100%, 380px);
  border-radius: 16px;
  border: 1px solid #dedfe4;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(24, 28, 35, 0.2);
  padding: 1.1rem 1rem 1rem;
}

.error-modal-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: #1b1f2a;
}

.error-modal-message {
  margin: 0.52rem 0 0;
  font-size: 0.9rem;
  line-height: 1.4;
  color: #4d5260;
}

.error-modal-close {
  margin-top: 1rem;
  width: 100%;
  border: 1px solid #c6ccda;
  background: #f1f4fb;
  color: #25344f;
  border-radius: 10px;
  padding: 0.55rem 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.error-modal-close:hover {
  background: #e7edf9;
}

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

@media (max-width: 820px) {
  .preview-page {
    max-width: 420px;
    padding: 1.1rem 0.9rem 2rem;
  }

  .loading-state {
    min-height: 190px;
    margin-top: 0.8rem;
  }

  .business-card-art {
    min-height: 130px;
    padding: 0.4rem;
  }

  .card-image-fallback {
    padding: 0.8rem;
  }

  .card-image-fallback.is-back .card-fallback-meta {
    top: 3.25rem;
  }

  .business-card-title {
    font-size: 0.82rem;
  }

  .card-face-indicator {
    font-size: 0.68rem;
  }

  .flip-button {
    min-width: 88px;
    font-size: 0.73rem;
    padding: 0.3rem 0.72rem;
  }

  .info-row {
    grid-template-columns: 110px 1fr;
    padding: 1.18rem 1rem;
  }

  .more-positions-toggle {
    padding: 1.03rem 1rem;
    font-size: 0.95rem;
  }

  .more-positions-content {
    padding: 0.64rem;
  }

  .more-position-row {
    padding: 0.88rem 0.92rem;
  }

  .more-position-item + .more-position-item {
    margin-top: 0.68rem;
  }

  .more-position-label {
    font-size: 0.68rem;
  }

  .more-position-value {
    margin-top: 0.28rem;
    font-size: 0.94rem;
  }

  .label {
    font-size: 0.8rem;
  }

  .value {
    font-size: 0.94rem;
  }
}