/* ========================================
   Lucas ECサイト - 共通コンポーネント
   全ページで共用するCSS
   ======================================== */

/* ---------- ベース ---------- */
body {
  background-color: #0D0D0D;
  color: #F5F5F5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ---------- フェードインアニメーション ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 1.2s ease-out, transform 1.2s ease-out;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- ヘッダー ---------- */
header {
  height: 72px;
  background-color: #0D0D0D;
  z-index: 100;
}

.nav-item {
  margin-right: 40px;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: #F5F5F5;
  font-weight: 300;
  transition: color 0.3s ease;
}
.nav-item:hover {
  color: #B8B8B8;
}
.nav-item.active {
  font-weight: 400;
  color: #F5F5F5;
}

.link-lucas {
  color: #F5F5F5;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.3s ease;
  letter-spacing: 0.05em;
}
.link-lucas:hover {
  opacity: 0.6;
}

/* ---------- ボタン ---------- */
.btn-lucas {
  background-color: #F5F5F5;
  color: #111111;
  height: 60px;
  padding: 0 48px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  letter-spacing: 0.1em;
  transition: background-color 0.3s ease, transform 0.3s ease;
  cursor: pointer;
  border: none;
  font-weight: 400;
}
.btn-lucas:hover {
  background-color: #DADADA;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid #1A1A1A;
  color: #F5F5F5;
}
.btn-secondary:hover {
  border-color: #F5F5F5;
  background-color: transparent;
}

/* ---------- フォーム ---------- */
.form-group {
  margin-bottom: 32px;
}

label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: #8C8C8C;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.required-mark::after {
  content: '*';
  color: #7A7A7A;
  margin-left: 8px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
select,
textarea {
  display: block;
  width: 100%;
  min-height: 56px;
  background-color: #111;
  border: 1px solid #1A1A1A;
  padding: 16px 20px;
  color: #F5F5F5;
  font-size: 15px;
  font-weight: 300;
  border-radius: 4px;
  transition: all 0.3s ease;
  appearance: none;
  box-sizing: border-box;
}

textarea {
  min-height: 180px;
  line-height: 1.7;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: #5F6368;
  background-color: #151515;
}

input::placeholder,
textarea::placeholder {
  color: #555;
  opacity: 0.6;
}
input:focus::placeholder,
textarea:focus::placeholder {
  opacity: 0.3;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238C8C8C' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 20px center;
  padding-right: 48px;
}

select option {
  background-color: #111;
  color: #F5F5F5;
}

.error-msg {
  font-size: 11px;
  color: #A52A2A;
  margin-top: 8px;
  letter-spacing: 0.05em;
  display: none;
}

.has-error input,
.has-error select,
.has-error textarea {
  border-color: #5a2a2a;
}

/* カスタムチェックボックス・ラジオ */
.custom-check {
  appearance: checkbox;
  width: 18px;
  height: 18px;
  accent-color: #F5F5F5;
  min-height: auto;
}

.custom-radio {
  appearance: radio;
  width: 18px;
  height: 18px;
  accent-color: #F5F5F5;
  min-height: auto;
}

/* ---------- グレインエフェクト ---------- */
.bg-grain {
  position: relative;
}
.bg-grain::after {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
  z-index: 50;
}

/* ---------- パンくずリスト ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
}
.breadcrumb-item {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: #8C8C8C;
  text-transform: uppercase;
}
.breadcrumb-item a {
  color: #8C8C8C;
  transition: color 0.3s ease;
}
.breadcrumb-item a:hover {
  color: #F5F5F5;
}
.breadcrumb-item.current {
  color: #F5F5F5;
}
.breadcrumb-sep {
  margin: 0 12px;
  color: #333;
}

/* ---------- 画像オーバーレイ ---------- */
.img-overlay {
  position: relative;
}
.img-overlay::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to bottom, rgba(13,13,13,0.2) 0%, rgba(13,13,13,0.6) 100%);
}

/* ---------- ステップインジケーター（カート・問合せ） ---------- */
.step-indicator {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.step-item {
  font-size: 10px;
  letter-spacing: 0.25em;
  color: #444;
  position: relative;
  text-transform: uppercase;
  transition: color 0.4s ease;
}
.step-item.active {
  color: #F5F5F5;
}
.step-item.completed {
  color: #8C8C8C;
}

/* ---------- 確認画面行 ---------- */
.confirm-row {
  display: flex;
  flex-direction: column;
  padding: 32px 0;
  border-bottom: 1px solid #1A1A1A;
}
@media (min-width: 768px) {
  .confirm-row {
    flex-direction: row;
  }
}

/* ---------- パスワード切替 ---------- */
.pass-wrapper {
  position: relative;
}
.pass-toggle {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: #444;
  cursor: pointer;
  transition: color 0.3s;
}
.pass-toggle:hover {
  color: #8C8C8C;
}

/* ---------- 画面切替（疑似SPA時代の名残・共通化） ---------- */
.screen {
  display: none;
  opacity: 0;
  transform: translateY(10px);
}
.screen.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.step-content {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.5s ease;
}
.step-content.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* ---------- アンカーナビゲーション（ガイド・FAQ・プライバシー・規約） ---------- */
.anchor-nav a {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: #8C8C8C;
  transition: color 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  white-space: nowrap;
}
.anchor-nav a:hover {
  color: #F5F5F5;
  border-bottom-color: #F5F5F5;
}

/* ---------- スムーススクロール ---------- */
html {
  scroll-behavior: smooth;
}