/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --accent: #1a237e;
  --header-bg: #1a237e;
  --text: #1a1a2e;
  --text-muted: #555;
  --bg: #f5f6fa;
  --surface: #ffffff;
  --border: #dde1ec;
  --radius: 8px;
  --shadow: 0 1px 6px rgba(0, 0, 0, 0.08);
}

html {
  font-size: 16px;
}

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* ===== Header ===== */
header {
  background: var(--header-bg);
  color: #fff;
  padding: 1.25rem 1rem;
  text-align: center;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
}

header h1 {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.3;
}

.subtitle {
  font-size: 0.875rem;
  opacity: 0.85;
  margin-top: 0.3rem;
}

/* ===== Ad Unit ===== */
.ad-unit {
  min-height: 90px;
  background: #eaedf5;
  margin: 1.25rem auto;
  max-width: 1100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #aaa;
  font-size: 0.75rem;
  border-radius: var(--radius);
}

/* ===== Tab Nav (mobile) ===== */
.tab-nav {
  display: flex;
  max-width: 1100px;
  margin: 0.75rem auto 0;
  padding: 0 1rem;
  gap: 0.5rem;
}

.tab-btn {
  flex: 1;
  padding: 0.65rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  background: var(--surface);
  color: var(--text-muted);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  touch-action: manipulation;
  min-height: 44px;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ===== Tool Section ===== */
.tool-section {
  max-width: 1100px;
  margin: 0.75rem auto 0;
  padding: 0 1rem;
}

/* ===== Panel ===== */
.panel {
  display: none;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.panel.active {
  display: block;
}

.form-header h2,
.preview-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

/* ===== Form ===== */
.form-group {
  margin-top: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.required {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  background: #e53935;
  color: #fff;
  padding: 0.1em 0.4em;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 0.25rem;
}

.optional {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  background: #e0e0e0;
  color: #666;
  padding: 0.1em 0.4em;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 0.25rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"] {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: #fafbff;
  color: var(--text);
  transition: border-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

input.invalid {
  border-color: #e53935;
}

.field-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.form-divider {
  height: 1px;
  background: var(--border);
  margin: 1.25rem 0;
}

/* ===== Design Section ===== */
.design-section h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

/* Template Selector */
.template-selector {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.template-option {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8rem;
}

.template-option input[type="radio"] {
  display: none;
}

.template-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 110px;
  height: 66px;
  border-radius: 6px;
  border: 2.5px solid var(--border);
  transition: border-color 0.2s;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.template-option input[type="radio"]:checked + .template-thumb {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}

.template-simple {
  background: #fff;
}

.template-dark {
  background: #1a1a2e;
}

.thumb-name {
  font-size: 0.75rem;
  font-weight: 600;
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  text-align: center;
}

.template-simple .thumb-name {
  color: #333;
}

.template-dark .thumb-name {
  color: #ccc;
}

/* Color Selector */
.color-selector {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.color-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  touch-action: manipulation;
  min-height: 36px;
  transition: transform 0.15s, border-color 0.15s;
  -webkit-appearance: none;
  appearance: none;
}

.color-btn:hover {
  transform: scale(1.12);
}

.color-btn.active {
  border-color: #fff;
  box-shadow: 0 0 0 3px var(--accent);
  transform: scale(1.12);
}

/* ===== Action Buttons ===== */
.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.btn {
  display: block;
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  touch-action: manipulation;
  min-height: 44px;
  transition: background 0.2s, opacity 0.2s;
  text-align: center;
  -webkit-appearance: none;
  appearance: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.88;
}

.btn-secondary {
  background: #e8eaf6;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-secondary:hover {
  background: #c5cae9;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
}

.btn-ghost:hover {
  background: #f0f0f5;
}

/* ===== Preview Panel ===== */
.preview-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.card-preview-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 0;
}

/* 名刺実寸: 91mm × 55mm → ブラウザ表示用に縮小 */
/* 91mm / 55mm = 1.6545... */
.card-preview {
  width: 364px; /* 91mm * 4 */
  height: 220px; /* 55mm * 4 */
  transform-origin: top left;
  transform: scale(0.75);
  /* スケール後の見た目サイズ: 273px × 165px */
  margin-bottom: -55px; /* 縮小で生じる余白を補正 */
  margin-right: -91px;
}

/* ===== Card Inner – Simple Template ===== */
.card-inner {
  width: 100%;
  height: 100%;
  display: flex;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.18);
  position: relative;
  background: #fff;
  color: #1a1a2e;
  font-family: "Noto Sans JP", sans-serif;
}

/* Dark template override */
.card-inner.tpl-dark {
  background: #1a1a2e;
  color: #f0f0f0;
}

.card-left-accent {
  width: 8px;
  min-width: 8px;
  background: var(--accent);
  border-radius: 0;
}

.card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 20px 14px 18px;
  overflow: hidden;
}

.card-top {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.card-company {
  font-size: 11px;
  font-weight: 500;
  opacity: 0.7;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-title {
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-center {
  text-align: center;
}

.card-name {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-kana {
  font-size: 10px;
  opacity: 0.6;
  margin-top: 2px;
  letter-spacing: 0.06em;
}

.card-bottom {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.card-contact {
  font-size: 11px;
  opacity: 0.85;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-invoice {
  font-size: 9px;
  opacity: 0.55;
  margin-top: 2px;
}

/* accent color bar – simple template uses a thin bar */
.card-inner.tpl-simple .card-name {
  color: var(--accent);
}

.card-inner.tpl-dark .card-name {
  color: #fff;
}

.card-inner.tpl-dark .card-left-accent {
  opacity: 0.9;
}

/* ===== Preview Actions (mobile) ===== */
.preview-actions {
  display: flex;
  gap: 0.65rem;
  margin-top: 1rem;
}

.preview-actions .btn {
  flex: 1;
}

/* ===== How-To Section ===== */
.howto-section {
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 1.5rem 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.howto-section h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  color: var(--text);
}

.howto-section h2:first-child {
  margin-top: 0;
}

.howto-steps {
  padding-left: 1.25rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.howto-steps li {
  margin-bottom: 0.6rem;
  line-height: 1.6;
}

.howto-section p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Affiliate Block ===== */
.affiliate-block {
  background: #fafbff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-top: 1rem;
}

.affiliate-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  background: #e0e0e0;
  color: #666;
  padding: 0.1em 0.5em;
  border-radius: 3px;
  margin-bottom: 0.4rem;
}

.affiliate-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.affiliate-link {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 6px;
  text-decoration: none;
  min-height: 44px;
  line-height: 1.6;
  transition: opacity 0.2s;
}

.affiliate-link:hover {
  opacity: 0.85;
}

/* ===== Footer ===== */
footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.85rem;
  color: #888;
}

footer p {
  margin-bottom: 0.3rem;
}

footer a {
  color: #666;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* ===== Print Area (hidden except @print) ===== */
#print-area {
  display: none;
}

/* ===== Desktop Layout ===== */
@media (min-width: 768px) {
  header h1 {
    font-size: 1.65rem;
  }

  /* タブナビを非表示 */
  .tab-nav {
    display: none;
  }

  /* ツールセクションを2カラムに */
  .tool-section {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 0 1.5rem;
  }

  /* 両パネルを常時表示 */
  .panel {
    display: block;
  }

  #panel-form {
    flex: 1;
    min-width: 0;
  }

  #panel-preview {
    flex: 0 0 360px;
    position: sticky;
    top: 1rem;
  }

  /* プレビュー内のモバイルボタン非表示 */
  .preview-actions {
    display: none;
  }

  /* カードプレビューのスケール調整 */
  .card-preview {
    transform: scale(0.88);
    margin-bottom: -27px;
    margin-right: -44px;
  }

  .howto-section {
    padding: 1.5rem 2rem;
    margin-left: 1.5rem;
    margin-right: 1.5rem;
  }

  .ad-unit {
    margin: 1.25rem 1.5rem;
  }
}

@media (min-width: 1100px) {
  .tool-section {
    padding: 0 2rem;
  }

  .howto-section {
    margin-left: 2rem;
    margin-right: 2rem;
  }

  .ad-unit {
    margin: 1.25rem 2rem;
  }

  #panel-preview {
    flex: 0 0 420px;
  }

  .card-preview {
    transform: scale(1.0);
    margin-bottom: 0;
    margin-right: 0;
  }
}

/* ===== Print Styles ===== */
@media print {
  @page {
    size: 91mm 55mm;
    margin: 0;
  }

  body * {
    visibility: hidden;
  }

  #print-area,
  #print-area * {
    visibility: visible;
  }

  #print-area {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 91mm;
    height: 55mm;
    overflow: hidden;
  }

  .print-card {
    width: 91mm;
    height: 55mm;
    display: flex;
    overflow: hidden;
    font-family: "Noto Sans JP", sans-serif;
    position: relative;
  }
}