/* ===========================
   GA4 Campaign URL Builder
   style.css
=========================== */

:root {
  --primary: #4285F4;
  --primary-dark: #2563EB;
  --primary-light: #EFF6FF;
  --success: #10B981;
  --success-light: #ECFDF5;
  --warning: #F59E0B;
  --warning-light: #FFFBEB;
  --danger: #EF4444;
  --danger-light: #FEF2F2;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);
  --transition: all .2s ease;
  --font: 'Inter', 'Noto Sans JP', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-800);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 14px;
}

/* ===== HEADER ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
}

.header-logo i { font-size: 22px; }

.logo-text {
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -.3px;
}

.header-nav {
  display: flex;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  transition: var(--transition);
}

.nav-link:hover { background: var(--gray-100); color: var(--gray-900); }
.nav-link.active { background: var(--primary-light); color: var(--primary); }

/* ===== MAIN ===== */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* ===== HERO ===== */
.hero-section {
  margin-bottom: 32px;
}

.hero-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -.5px;
  margin-bottom: 8px;
}

.hero-archive .hero-title { color: var(--gray-700); }

.hero-desc {
  color: var(--gray-500);
  font-size: 15px;
}

/* ===== BUILDER LAYOUT ===== */
.builder-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 24px;
  align-items: start;
  margin-bottom: 40px;
}

/* ===== CARDS ===== */
.form-card,
.output-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.output-card { margin-bottom: 16px; }
.output-card:last-child { margin-bottom: 0; }

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.card-header i {
  color: var(--primary);
  font-size: 16px;
}

.card-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
  flex: 1;
}

/* QR Size Control */
.qr-size-control {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-500);
}

.qr-size-control select {
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 12px;
  color: var(--gray-700);
  background: var(--white);
  cursor: pointer;
}

/* ===== FORM ===== */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 20px;
  letter-spacing: .3px;
}

.required-badge {
  background: #FEF2F2;
  color: #EF4444;
}

.param-tag {
  font-size: 11px;
  font-weight: 500;
  font-family: 'Courier New', monospace;
  background: var(--gray-100);
  color: var(--gray-500);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: auto;
}

.param-tag.optional {
  font-family: var(--font);
  background: var(--gray-100);
  color: var(--gray-400);
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 13px;
  pointer-events: none;
}

.input-wrapper textarea ~ .input-icon,
.input-wrapper:has(textarea) .input-icon {
  top: 14px;
  transform: none;
}

.input-wrapper input,
.input-wrapper textarea {
  width: 100%;
  padding: 10px 12px 10px 36px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  color: var(--gray-800);
  background: var(--white);
  transition: var(--transition);
  outline: none;
  resize: vertical;
}

.input-wrapper input::placeholder,
.input-wrapper textarea::placeholder { color: var(--gray-300); }

.input-wrapper input:focus,
.input-wrapper textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(66, 133, 244, .12);
}

.input-wrapper input.error { border-color: var(--danger); }

.field-desc {
  margin-top: 5px;
  font-size: 12px;
  color: var(--gray-400);
}

.section-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .8px;
}

.section-divider::before {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gray-200);
}

.section-divider::after {
  content: '';
  height: 1px;
  background: var(--gray-200);
  flex: 0 0 0; /* advance toggleがあるので右側はなし */
}

/* Advance Toggle */
.advance-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  user-select: none;
  margin-left: auto;
  flex-shrink: 0;
}

.advance-toggle input[type="checkbox"] {
  display: none;
}

.toggle-track {
  width: 36px;
  height: 20px;
  background: var(--gray-300);
  border-radius: 20px;
  position: relative;
  transition: background .2s ease;
  flex-shrink: 0;
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  background: var(--white);
  border-radius: 50%;
  transition: transform .2s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}

.advance-toggle input:checked ~ .toggle-track { background: var(--primary); }
.advance-toggle input:checked ~ .toggle-track .toggle-thumb { transform: translateX(16px); }

.toggle-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  letter-spacing: .3px;
  transition: color .2s;
}

.advance-toggle:has(input:checked) .toggle-label { color: var(--primary); }

/* Advance Fields */
.advance-field {
  display: none;
  animation: fadeIn .2s ease;
}

.advance-field.visible { display: block; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:active { transform: scale(.98); }

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 4px 12px rgba(66,133,244,.35); }

.btn-success {
  background: var(--success);
  color: var(--white);
}
.btn-success:hover { background: #059669; box-shadow: 0 4px 12px rgba(16,185,129,.3); }

.btn-warning {
  background: var(--warning);
  color: var(--white);
}
.btn-warning:hover { background: #D97706; }

.btn-danger {
  background: var(--danger);
  color: var(--white);
}
.btn-danger:hover { background: #DC2626; }

.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border: 1.5px solid var(--danger);
}
.btn-danger-outline:hover { background: var(--danger-light); }

.btn-ghost {
  background: var(--gray-100);
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
}
.btn-ghost:hover { background: var(--gray-200); }

.btn-sm { padding: 6px 14px; font-size: 13px; }

.btn-copy {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid #BFDBFE;
}
.btn-copy:hover { background: #DBEAFE; }

.btn-open {
  background: var(--gray-100);
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
}
.btn-open:hover { background: var(--gray-200); }

.btn-download {
  background: var(--success-light);
  color: var(--success);
  border: 1px solid #A7F3D0;
}
.btn-download:hover { background: #D1FAE5; }

.btn-csv {
  background: #F0FDF4;
  color: #16A34A;
  border: 1px solid #BBF7D0;
}
.btn-csv:hover { background: #DCFCE7; }

.btn-full { width: 100%; justify-content: center; }

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-100);
}

/* ===== OUTPUT ===== */
.output-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 32px 20px;
  color: var(--gray-300);
  text-align: center;
  font-size: 13px;
}

.output-placeholder i { font-size: 1.5rem; }

.url-result { animation: fadeIn .3s ease; }

.url-display {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: var(--gray-700);
  word-break: break-all;
  line-height: 1.7;
  max-height: 120px;
  overflow-y: auto;
  margin-bottom: 12px;
}

.url-display .utm-highlight { color: var(--primary); font-weight: 600; }

.url-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* QR */
.qr-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: fadeIn .3s ease;
}

.qr-container img,
.qr-container canvas {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 12px;
  background: var(--white);
  display: block;
}

/* Save card */
.save-card {
  border: 1.5px dashed var(--success);
  background: var(--success-light);
}

.save-card .card-header { border-bottom-color: #D1FAE5; }
.save-card .card-header i { color: var(--success); }
.save-card .card-header h2 { color: var(--success); }

.save-desc {
  font-size: 13px;
  color: var(--gray-600);
  margin-bottom: 16px;
}

/* ===== HISTORY SECTION ===== */
.history-section {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title i { color: var(--primary); font-size: 16px; }

.section-title h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
}

.history-count {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
}

.history-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
}

.search-box i { color: var(--gray-400); font-size: 12px; }

.search-box input {
  border: none;
  background: transparent;
  font-family: var(--font);
  font-size: 13px;
  color: var(--gray-700);
  outline: none;
  width: 180px;
}

.search-box input::placeholder { color: var(--gray-300); }

/* ===== HISTORY LIST ===== */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.loading-state,
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 48px 20px;
  color: var(--gray-400);
  text-align: center;
}

.loading-state i { font-size: 1.5rem; color: var(--primary); }
.empty-state i { font-size: 2.5rem; opacity: .3; }
.empty-state p { font-size: 14px; }

/* History Item */
.history-item {
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: var(--transition);
  animation: fadeIn .25s ease;
  position: relative;
}

.history-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }

.history-item.archived { border-color: var(--gray-200); background: var(--gray-50); opacity: .85; }

.history-item-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.history-item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.history-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 20px;
}

.badge-source { background: #EDE9FE; color: #7C3AED; }
.badge-medium { background: #FEF3C7; color: #92400E; }
.badge-campaign { background: #DCFCE7; color: #166534; }

.history-date {
  font-size: 12px;
  color: var(--gray-400);
  margin-left: auto;
  white-space: nowrap;
}

.history-item-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-500);
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover { background: var(--gray-100); color: var(--gray-700); }
.btn-icon.archive { color: var(--warning); border-color: #FDE68A; background: var(--warning-light); }
.btn-icon.archive:hover { background: #FEF3C7; }
.btn-icon.restore { color: var(--success); border-color: #A7F3D0; background: var(--success-light); }
.btn-icon.restore:hover { background: #D1FAE5; }
.btn-icon.delete { color: var(--danger); border-color: #FECACA; background: var(--danger-light); }
.btn-icon.delete:hover { background: #FEE2E2; }
.btn-icon.qr { color: var(--primary); border-color: #BFDBFE; background: var(--primary-light); }
.btn-icon.qr:hover { background: #DBEAFE; }

/* ===== QR MODAL ===== */
.qr-modal-box {
  max-width: 380px;
  width: 92%;
  text-align: center;
  padding: 28px 24px;
}

.qr-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.qr-modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qr-modal-title-wrap i { color: var(--primary); font-size: 16px; }

.qr-modal-title-wrap h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.5;
  word-break: break-all;
  text-align: left;
}

.qr-modal-size-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 16px;
}

.qr-modal-size-row select {
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 13px;
  color: var(--gray-700);
  background: var(--white);
  cursor: pointer;
}

.qr-modal-canvas-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
  min-height: 140px;
  align-items: center;
}

.qr-modal-canvas-wrap img,
.qr-modal-canvas-wrap canvas {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 10px;
  background: var(--white);
}

.qr-modal-url {
  font-family: 'Courier New', monospace;
  font-size: 11px;
  color: var(--gray-500);
  word-break: break-all;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 6px;
  padding: 8px 10px;
  margin-bottom: 16px;
  text-align: left;
  line-height: 1.6;
}

.qr-modal-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.history-url-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.history-url {
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: var(--gray-600);
  word-break: break-all;
  flex: 1;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 6px;
  padding: 6px 10px;
}

.history-url .domain { color: var(--gray-800); font-weight: 500; }
.history-url .params { color: var(--primary); }

.history-memo {
  font-size: 12px;
  color: var(--gray-500);
  background: var(--warning-light);
  border-left: 3px solid var(--warning);
  padding: 5px 10px;
  border-radius: 0 4px 4px 0;
  margin-top: 6px;
}

.history-memo i { margin-right: 4px; color: var(--warning); }

/* Archive tag */
.archive-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  background: var(--gray-200);
  color: var(--gray-500);
  padding: 2px 8px;
  border-radius: 20px;
}

/* Pagination */
.history-pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.page-btn {
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--gray-600);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-btn:hover { border-color: var(--primary); color: var(--primary); }
.page-btn.active { background: var(--primary); color: var(--white); border-color: var(--primary); }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--gray-900);
  color: var(--white);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideUp .25s ease;
  max-width: 360px;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); color: var(--gray-900); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn .2s ease;
}

.modal-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: slideUp .25s ease;
}

.modal-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--warning-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 22px;
  color: var(--warning);
}

.modal-icon.danger { background: var(--danger-light); color: var(--danger); }

.modal-box h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.modal-box p {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 24px;
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

/* ===== AUTH ===== */
#auth-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563EB 100%);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 25px 50px rgba(0,0,0,.25);
  text-align: center;
  animation: slideUp .3s ease;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gray-100);
}

.auth-logo-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-900);
  text-align: left;
}

.auth-logo-sub {
  font-size: 11px;
  color: var(--gray-400);
  text-align: left;
  margin-top: 2px;
}

.auth-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 22px;
  color: var(--primary);
}

.auth-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.auth-desc {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 24px;
}

.auth-input-wrap {
  position: relative;
  margin-bottom: 12px;
}

.auth-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 14px;
  pointer-events: none;
}

.auth-input-wrap input {
  width: 100%;
  padding: 12px 44px 12px 40px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 15px;
  color: var(--gray-800);
  outline: none;
  transition: var(--transition);
  letter-spacing: 2px;
}

.auth-input-wrap input::placeholder { letter-spacing: 0; font-size: 13px; color: var(--gray-300); }
.auth-input-wrap input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(66,133,244,.12); }
.auth-input-wrap input.error { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(239,68,68,.12); }

#auth-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: 4px;
  font-size: 14px;
}

#auth-toggle:hover { color: var(--gray-600); }

.auth-error {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: var(--danger);
  background: var(--danger-light);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 12px;
  animation: fadeIn .2s ease;
}

.auth-btn {
  width: 100%;
  padding: 13px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
}

.auth-btn:hover { background: var(--primary-dark); box-shadow: 0 4px 12px rgba(66,133,244,.35); }
.auth-btn:active { transform: scale(.98); }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-8px); }
  40%       { transform: translateX(8px); }
  60%       { transform: translateX(-6px); }
  80%       { transform: translateX(6px); }
}

/* ===== UTILITIES ===== */
.hidden { display: none !important; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== NAMING GUIDE ===== */
.naming-guide {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.guide-header:hover { background: var(--gray-50); }
.guide-header.open { border-bottom-color: var(--gray-200); }

.guide-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.guide-header-left i { color: #F59E0B; font-size: 16px; }

.guide-header-left h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-800);
}

.guide-badge {
  font-size: 11px;
  font-weight: 500;
  background: #FEF3C7;
  color: #92400E;
  padding: 2px 10px;
  border-radius: 20px;
}

.guide-chevron {
  color: var(--gray-400);
  font-size: 13px;
  transition: transform .25s ease;
}

.guide-chevron.open { transform: rotate(180deg); }

.guide-body {
  display: none;
  padding: 24px;
  flex-direction: column;
  gap: 24px;
  animation: fadeIn .2s ease;
}

.guide-body.open { display: flex; }

/* Concept */
.guide-concept {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 16px;
}

.guide-concept-text {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.7;
}

.guide-concept-text strong { color: var(--primary); }

/* Pattern Grid */
.guide-pattern-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--gray-200);
}

.guide-pattern-item {
  padding: 16px 18px;
  border-right: 1px solid var(--gray-200);
}

.guide-pattern-item:last-child { border-right: none; }

.pattern-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 8px;
}

.pattern-formula {
  margin-bottom: 10px;
}

.pattern-formula code {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-family: 'Courier New', monospace;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 700;
  display: inline-block;
}

.pattern-examples {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.pattern-examples span {
  font-size: 12px;
  color: var(--gray-600);
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.pattern-examples code {
  background: var(--gray-100);
  color: var(--gray-700);
  font-family: 'Courier New', monospace;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
  white-space: nowrap;
}

.pattern-examples em {
  font-style: normal;
  color: var(--gray-400);
  font-size: 11px;
}

/* Tables */
.guide-tables {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.guide-table-block {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
}

.guide-table-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--gray-50);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-200);
}

.guide-table-title i { color: var(--primary); }

.guide-table-scroll { overflow-x: auto; }

.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.guide-table thead tr {
  background: var(--gray-50);
}

.guide-table th {
  padding: 8px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

.guide-table td {
  padding: 9px 14px;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
  white-space: nowrap;
}

.guide-table tbody tr:last-child td { border-bottom: none; }
.guide-table tbody tr:hover { background: var(--gray-50); }

.guide-table td:first-child { color: var(--gray-600); font-weight: 500; }
.guide-table td:first-child i { margin-right: 6px; color: var(--gray-400); }

.guide-table code {
  background: var(--gray-100);
  color: var(--primary-dark);
  font-family: 'Courier New', monospace;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}

.guide-tip {
  padding: 10px 16px;
  font-size: 12px;
  color: var(--gray-600);
  background: #FFFBEB;
  border-top: 1px solid #FDE68A;
  line-height: 1.6;
}

.guide-tip i { color: var(--warning); margin-right: 4px; }
.guide-tip code {
  background: #FEF3C7;
  color: #92400E;
  font-family: 'Courier New', monospace;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 3px;
}

/* Rules */
.guide-rules {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.guide-rule-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.guide-rule-title i { color: var(--warning); }

.guide-rule-list { display: flex; flex-direction: column; gap: 10px; }

.guide-rule-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  flex-wrap: wrap;
}

.rule-label {
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.rule-label.ok { background: #DCFCE7; color: #166534; }
.rule-label.ng { background: #FEE2E2; color: #991B1B; }

.guide-rule-item code {
  background: var(--gray-200);
  color: var(--gray-700);
  font-family: 'Courier New', monospace;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}

.guide-rule-item.bad code {
  background: #FEE2E2;
  color: #991B1B;
  text-decoration: line-through;
}

.rule-notes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 4px;
}

.rule-notes li {
  font-size: 13px;
  color: var(--gray-600);
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.rule-notes li i { color: var(--primary); font-size: 10px; flex-shrink: 0; }

.rule-notes code {
  background: var(--gray-200);
  color: var(--gray-700);
  font-family: 'Courier New', monospace;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 3px;
}

/* ===== PARAM CHIPS ===== */
.param-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
  min-height: 0;
}
.param-chips:empty {
  display: none;
}
.param-chips-label {
  width: 100%;
  font-size: 11px;
  color: var(--gray-400);
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: 2px;
}
.chips-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.chips-reset-btn {
  display: none; /* JS で dismissed があるときだけ表示 */
  align-items: center;
  gap: 4px;
  width: fit-content;
  font-size: 11px;
  font-weight: 500;
  color: #2563eb;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  padding: 3px 10px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  font-family: inherit;
  line-height: 1.5;
  margin-top: 2px;
}
.chips-reset-btn:hover {
  background: #dbeafe;
  border-color: #93c5fd;
}
.param-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px 4px 8px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: #1d4ed8;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.15s;
  user-select: none;
  line-height: 1.4;
}
.param-chip:hover {
  background: #dbeafe;
  border-color: #3b82f6;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(59,130,246,0.18);
}
.param-chip:active {
  transform: scale(0.96);
}
/* ↵ 入力アイコン */
.param-chip-enter {
  font-size: 10px;
  color: #93c5fd;
  transition: color 0.15s;
  flex-shrink: 0;
  rotate: 90deg;
}
.param-chip:hover .param-chip-enter {
  color: #2563eb;
}
/* ツールチップ */
.param-chip::after {
  content: 'クリックで入力';
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.85);
  background: #1e293b;
  color: #fff;
  font-size: 10px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s, transform 0.15s;
  z-index: 10;
}
.param-chip:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}
/* 削除ボタン */
.param-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: transparent;
  color: #93c5fd;
  font-size: 10px;
  margin-left: 1px;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
  z-index: 1;
}
.param-chip-remove:hover {
  background: #ef4444 !important;
  color: #fff !important;
}
/* 削除ツールチップ */
.param-chip-remove::after {
  content: '削除';
  position: absolute;
  bottom: calc(100% + 6px);
  left: auto;
  right: 0;
  transform: scale(0.85);
  background: #ef4444;
  color: #fff;
  font-size: 10px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s, transform 0.15s;
  z-index: 10;
}
.param-chip-remove:hover::after {
  opacity: 1;
  transform: scale(1);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .guide-pattern-grid {
    grid-template-columns: 1fr;
  }
  .guide-pattern-item { border-right: none; border-bottom: 1px solid var(--gray-200); }
  .guide-pattern-item:last-child { border-bottom: none; }

  .builder-layout {
    grid-template-columns: 1fr;
  }

  .output-panel { order: -1; }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-inner { padding: 0 16px; }
  .logo-text { font-size: 15px; }

  .main-content { padding: 20px 16px 48px; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 22px; }
  .form-card, .output-card, .history-section { padding: 20px 16px; }
  .history-controls { flex-direction: column; align-items: flex-start; width: 100%; }
  .search-box { width: 100%; }
  .search-box input { width: 100%; }
  .header-nav .nav-link span { display: none; }
}