/* =============================================================
   nishoko.css — カスタムスタイル
   カラーテーマ: スレートグレー × カッパー（案D）
   ============================================================= */

/* --- リセット・基盤 --- */
*, *::before, *::after { box-sizing: border-box; }
body { font-family: var(--ns-font-base); color: var(--ns-text); background: var(--ns-bg); }
img  { max-width: 100%; height: auto; display: block; }
a    { color: var(--ns-copper); text-decoration: none; transition: var(--ns-transition); }
a:hover { color: var(--ns-copper-light); }

/* =============================================================
   ヘッダー
   ============================================================= */
.site-header, .l-header {
  background: var(--ns-dark) !important;
  border-bottom: 3px solid var(--ns-copper) !important;
}
.site-logo img, .l-header__logo img { max-height: 52px; width: auto; }
.l-header__nav a, .site-nav a {
  color: var(--ns-white) !important;
  font-weight: 500;
  letter-spacing: .04em;
}
.l-header__nav a:hover, .site-nav a:hover { color: var(--ns-copper-light) !important; }

.ns-header-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ns-copper); color: var(--ns-white) !important;
  padding: 8px 18px; border-radius: var(--ns-radius);
  font-size: .85rem; font-weight: 700;
}
.ns-header-cta:hover { background: var(--ns-copper-dark) !important; }

/* =============================================================
   ヒーローセクション
   ============================================================= */
.ns-hero {
  background: linear-gradient(135deg, var(--ns-dark) 0%, var(--ns-slate-deep) 60%, #3a4a5c 100%);
  padding: 100px 0 80px; position: relative; overflow: hidden;
}
.ns-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 20% 80%, rgba(184,115,51,.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(184,115,51,.08) 0%, transparent 40%);
}
.ns-hero__inner {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.ns-hero__badge {
  display: inline-block;
  background: rgba(184,115,51,.15); border: 1px solid rgba(184,115,51,.4);
  color: var(--ns-copper-light); font-size: .8rem; font-weight: 700;
  letter-spacing: .1em; padding: 5px 14px; border-radius: var(--ns-radius-pill);
  margin-bottom: 20px; text-transform: uppercase;
}
.ns-hero__title {
  font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 900;
  color: var(--ns-white); line-height: 1.3; margin: 0 0 16px; letter-spacing: -.01em;
}
.ns-hero__title em { font-style: normal; color: var(--ns-copper-light); display: block; }
.ns-hero__subtitle { font-size: 1.05rem; color: rgba(255,255,255,.75); line-height: 1.8; margin: 0 0 36px; }
.ns-hero__cta { display: flex; gap: 16px; flex-wrap: wrap; }
.ns-hero__image {
  border-radius: var(--ns-radius-lg); overflow: hidden;
  box-shadow: 0 25px 50px rgba(0,0,0,.4);
}
.ns-hero__image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }

/* =============================================================
   ボタン
   ============================================================= */
.ns-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--ns-radius);
  font-size: 1rem; font-weight: 700; cursor: pointer;
  transition: var(--ns-transition); border: 2px solid transparent;
  text-decoration: none; line-height: 1; white-space: nowrap;
}
.ns-btn--primary { background: var(--ns-copper); color: var(--ns-white); border-color: var(--ns-copper); }
.ns-btn--primary:hover {
  background: var(--ns-copper-dark); border-color: var(--ns-copper-dark); color: var(--ns-white);
  transform: translateY(-2px); box-shadow: 0 8px 20px rgba(184,115,51,.3);
}
.ns-btn--outline { background: transparent; color: var(--ns-white); border-color: rgba(255,255,255,.5); }
.ns-btn--outline:hover { background: rgba(255,255,255,.1); border-color: var(--ns-white); color: var(--ns-white); }
.ns-btn--dark { background: var(--ns-dark); color: var(--ns-white); border-color: var(--ns-dark); }
.ns-btn--dark:hover { background: var(--ns-slate-deep); color: var(--ns-white); transform: translateY(-2px); }
.ns-btn--sm  { padding: 10px 20px; font-size: .875rem; }
.ns-btn--lg  { padding: 18px 36px; font-size: 1.1rem; }
.ns-btn--full { width: 100%; justify-content: center; }

/* =============================================================
   セクション共通
   ============================================================= */
.ns-section       { padding: var(--ns-section-py) 0; }
.ns-section--dark { background: var(--ns-slate-deep); color: var(--ns-white); }
.ns-section--gray { background: var(--ns-gray-200); }
.ns-container     { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.ns-section-header { text-align: center; margin-bottom: 56px; }
.ns-section-label {
  display: inline-block; color: var(--ns-copper);
  font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; margin-bottom: 12px;
}
.ns-section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 900; line-height: 1.3; margin: 0 0 16px; }
.ns-section-desc  { font-size: 1rem; line-height: 1.8; color: var(--ns-text-sub); max-width: 600px; margin: 0 auto; }
.ns-section--dark .ns-section-desc { color: rgba(255,255,255,.7); }

/* =============================================================
   LCD vs LED 比較表
   ============================================================= */
.ns-compare-table-wrap {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  border-radius: var(--ns-radius-lg); box-shadow: var(--ns-shadow-lg);
}
.ns-compare-table {
  width: 100%; min-width: 640px; border-collapse: collapse; background: var(--ns-white);
}
.ns-compare-table th, .ns-compare-table td {
  padding: 14px 20px; text-align: center;
  border-bottom: 1px solid var(--ns-gray-300); font-size: .95rem;
}
.ns-compare-table th { background: var(--ns-slate-deep); color: var(--ns-white); font-weight: 700; letter-spacing: .04em; }
.ns-compare-table th:first-child, .ns-compare-table td:first-child { text-align: left; font-weight: 600; }
.ns-compare-table th.ns-col-led { background: var(--ns-copper); }
.ns-compare-table tr:last-child td { border-bottom: none; }
.ns-compare-table tr:nth-child(even) td { background: var(--ns-gray-100); }
.ns-compare-icon--good { color: #38A169; font-size: 1.1rem; }
.ns-compare-icon--mid  { color: #D69E2E; font-size: 1.1rem; }
.ns-compare-icon--bad  { color: #E53E3E; font-size: 1.1rem; }

/* =============================================================
   商品カード
   ============================================================= */
.ns-products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; }
.ns-product-card {
  background: var(--ns-white); border-radius: var(--ns-radius-lg);
  box-shadow: var(--ns-shadow-md); overflow: hidden;
  transition: var(--ns-transition); border: 1px solid var(--ns-gray-300);
  display: flex; flex-direction: column;
}
.ns-product-card:hover { transform: translateY(-4px); box-shadow: var(--ns-shadow-lg); border-color: var(--ns-copper); }
.ns-product-card__image { aspect-ratio: 4/3; overflow: hidden; background: var(--ns-gray-200); }
.ns-product-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.ns-product-card:hover .ns-product-card__image img { transform: scale(1.04); }
.ns-product-card__body  { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.ns-product-card__badge {
  display: inline-block; background: var(--ns-gray-200); color: var(--ns-slate-mid);
  font-size: .75rem; font-weight: 700; padding: 3px 10px;
  border-radius: var(--ns-radius-pill); margin-bottom: 8px;
}
.ns-product-card__title { font-size: 1.05rem; font-weight: 700; margin: 0 0 12px; line-height: 1.4; }
.ns-product-card__specs {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px;
  margin: 0 0 16px; font-size: .82rem; color: var(--ns-text-sub);
}
.ns-product-card__specs dt { font-weight: 600; }
.ns-product-card__specs dd { margin: 0; }
.ns-product-card__price { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--ns-gray-300); }

/* 価格表示 */
.ns-price-value { font-size: 1.3rem; font-weight: 900; color: var(--ns-copper); font-variant-numeric: tabular-nums; }
.ns-price-lock {
  display: flex; align-items: center; gap: 8px;
  background: var(--ns-gray-200); border: 1px dashed var(--ns-slate-light);
  border-radius: var(--ns-radius); padding: 10px 14px;
  font-size: .85rem; color: var(--ns-text-sub); transition: var(--ns-transition);
}
.ns-price-lock:hover { border-color: var(--ns-copper); background: rgba(184,115,51,.06); color: var(--ns-copper); }
.ns-lock-icon { font-size: 1rem; }
.ns-lock-text { font-weight: 600; }

/* =============================================================
   技術計算ツール（カード）
   ============================================================= */
.ns-tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; margin-bottom: 40px; }
.ns-tool-card {
  background: var(--ns-white); border-radius: var(--ns-radius-lg); padding: 28px 24px;
  text-align: center; box-shadow: var(--ns-shadow-md); border: 1px solid var(--ns-gray-300);
  cursor: pointer; transition: var(--ns-transition); text-decoration: none; color: var(--ns-text);
}
.ns-tool-card:hover { transform: translateY(-4px); border-color: var(--ns-copper); box-shadow: 0 8px 24px rgba(184,115,51,.15); color: var(--ns-text); }
.ns-tool-card__icon  { font-size: 2.5rem; margin-bottom: 12px; display: block; }
.ns-tool-card__title { font-size: 1rem; font-weight: 700; margin: 0 0 6px; }
.ns-tool-card__desc  { font-size: .82rem; color: var(--ns-text-sub); margin: 0; line-height: 1.6; }

/* 計算ツール フォーム */
.ns-calc-form   { background: var(--ns-white); border-radius: var(--ns-radius-lg); box-shadow: var(--ns-shadow-lg); overflow: hidden; }
.ns-calc-tabs   { display: flex; background: var(--ns-slate-deep); overflow-x: auto; }
.ns-calc-tab {
  flex: 1; min-width: max-content; padding: 14px 20px; text-align: center;
  color: rgba(255,255,255,.6); font-weight: 600; font-size: .9rem;
  cursor: pointer; transition: var(--ns-transition); border-bottom: 3px solid transparent;
}
.ns-calc-tab.is-active,
.ns-calc-tab:hover { color: var(--ns-white); border-bottom-color: var(--ns-copper); background: rgba(255,255,255,.05); }
.ns-calc-panels { padding: 32px; }
.ns-calc-panel         { display: none; }
.ns-calc-panel.is-active { display: block; }

.ns-field         { margin-bottom: 20px; }
.ns-field label   { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.ns-field input, .ns-field select {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--ns-gray-300);
  border-radius: var(--ns-radius); font-size: 1rem; font-family: var(--ns-font-base);
  transition: var(--ns-transition); background: var(--ns-white); color: var(--ns-text);
}
.ns-field input:focus, .ns-field select:focus {
  outline: none; border-color: var(--ns-copper); box-shadow: 0 0 0 3px rgba(184,115,51,.15);
}
.ns-field-hint   { font-size: .78rem; color: var(--ns-slate-light); margin-top: 4px; }
.ns-field-row    { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.ns-calc-result             { background: var(--ns-slate-deep); color: var(--ns-white); border-radius: var(--ns-radius-lg); padding: 24px; margin-top: 24px; display: none; }
.ns-calc-result.is-visible  { display: block; }
.ns-calc-result__title      { font-size: .85rem; font-weight: 700; color: var(--ns-copper-light); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 16px; }
.ns-calc-result__items      { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; }
.ns-calc-result__item       { background: rgba(255,255,255,.08); border-radius: var(--ns-radius); padding: 14px; }
.ns-calc-result__label      { font-size: .78rem; color: rgba(255,255,255,.6); margin-bottom: 4px; }
.ns-calc-result__value      { font-size: 1.4rem; font-weight: 900; color: var(--ns-copper-light); font-variant-numeric: tabular-nums; }
.ns-calc-result__unit       { font-size: .75rem; color: rgba(255,255,255,.5); margin-top: 2px; }
.ns-calc-note               { font-size: .78rem; color: rgba(255,255,255,.5); margin-top: 16px; line-height: 1.7; border-top: 1px solid rgba(255,255,255,.1); padding-top: 12px; }

/* =============================================================
   Gemini AI チャット
   ============================================================= */
.ns-chat-trigger {
  position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  background: var(--ns-dark); border: 2px solid var(--ns-copper); color: var(--ns-white);
  padding: 14px 20px; border-radius: var(--ns-radius-pill); cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: .9rem; font-family: var(--ns-font-base);
  box-shadow: 0 4px 20px rgba(184,115,51,.35); transition: var(--ns-transition);
  animation: ns-pulse 3s infinite; border: none;
}
.ns-chat-trigger:hover { background: var(--ns-copper); transform: scale(1.04); }
.ns-chat-trigger__icon { font-size: 1.2rem; }

@keyframes ns-pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(184,115,51,.35); }
  50%       { box-shadow: 0 4px 30px rgba(184,115,51,.65); }
}

.ns-chat-window {
  position: fixed; bottom: 90px; right: 24px; z-index: 9998;
  width: 380px; max-width: calc(100vw - 48px);
  background: var(--ns-white); border-radius: var(--ns-radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  display: none; flex-direction: column; overflow: hidden;
  border: 1px solid var(--ns-gray-300); max-height: 520px;
}
.ns-chat-window.is-open { display: flex; }

.ns-chat-header {
  background: var(--ns-dark); padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 2px solid var(--ns-copper);
}
.ns-chat-header__title { color: var(--ns-white); font-weight: 700; font-size: .95rem; }
.ns-chat-header__sub   { color: var(--ns-copper-light); font-size: .72rem; margin-top: 2px; }
.ns-chat-close { background: none; border: none; color: rgba(255,255,255,.6); cursor: pointer; font-size: 1.2rem; padding: 0; }
.ns-chat-close:hover { color: var(--ns-white); }

.ns-chat-messages {
  flex: 1; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 12px; background: var(--ns-gray-100);
}
.ns-chat-msg       { display: flex; gap: 10px; align-items: flex-start; }
.ns-chat-msg--user { flex-direction: row-reverse; }
.ns-chat-msg__avatar {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: .8rem; font-weight: 700;
}
.ns-chat-msg--bot  .ns-chat-msg__avatar { background: var(--ns-dark); color: var(--ns-copper-light); border: 1px solid var(--ns-copper); }
.ns-chat-msg--user .ns-chat-msg__avatar { background: var(--ns-slate-mid); color: var(--ns-white); }
.ns-chat-msg__bubble {
  max-width: 80%; padding: 10px 14px; border-radius: 12px;
  font-size: .88rem; line-height: 1.7; white-space: pre-wrap; word-break: break-word;
}
.ns-chat-msg--bot  .ns-chat-msg__bubble { background: var(--ns-white); border: 1px solid var(--ns-gray-300); color: var(--ns-text); border-top-left-radius: 2px; }
.ns-chat-msg--user .ns-chat-msg__bubble { background: var(--ns-slate-deep); color: var(--ns-white); border-top-right-radius: 2px; }

.ns-chat-typing { display: none; align-items: center; gap: 4px; padding: 12px 14px; }
.ns-chat-typing.is-visible { display: flex; }
.ns-chat-typing span { width: 7px; height: 7px; background: var(--ns-slate-light); border-radius: 50%; animation: ns-typing .9s infinite; }
.ns-chat-typing span:nth-child(2) { animation-delay: .2s; }
.ns-chat-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes ns-typing {
  0%, 100% { opacity: .3; transform: translateY(0); }
  50%       { opacity: 1;  transform: translateY(-4px); }
}

.ns-chat-footer { padding: 14px 16px; border-top: 1px solid var(--ns-gray-300); background: var(--ns-white); }
.ns-chat-form   { display: flex; gap: 8px; align-items: center; }
.ns-chat-input  { flex: 1; border: 1.5px solid var(--ns-gray-300); border-radius: var(--ns-radius-pill); padding: 10px 16px; font-size: .88rem; font-family: var(--ns-font-base); outline: none; transition: var(--ns-transition); }
.ns-chat-input:focus { border-color: var(--ns-copper); box-shadow: 0 0 0 3px rgba(184,115,51,.12); }
.ns-chat-send { background: var(--ns-copper); color: var(--ns-white); border: none; width: 38px; height: 38px; border-radius: 50%; cursor: pointer; font-size: 1rem; display: flex; align-items: center; justify-content: center; transition: var(--ns-transition); }
.ns-chat-send:hover { background: var(--ns-copper-dark); transform: scale(1.05); }

/* =============================================================
   設置実績
   ============================================================= */
.ns-works-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.ns-work-card  { background: var(--ns-white); border-radius: var(--ns-radius-lg); overflow: hidden; box-shadow: var(--ns-shadow-md); border: 1px solid var(--ns-gray-300); transition: var(--ns-transition); text-decoration: none; color: var(--ns-text); display: flex; flex-direction: column; }
.ns-work-card:hover { transform: translateY(-4px); box-shadow: var(--ns-shadow-lg); border-color: var(--ns-copper); color: var(--ns-text); }
.ns-work-card__image { aspect-ratio: 16/9; overflow: hidden; background: var(--ns-slate-deep); }
.ns-work-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.ns-work-card:hover .ns-work-card__image img { transform: scale(1.04); }
.ns-work-card__body  { padding: 18px; flex: 1; }
.ns-work-card__meta  { font-size: .75rem; color: var(--ns-text-sub); margin-bottom: 6px; display: flex; gap: 8px; }
.ns-work-card__title { font-size: 1rem; font-weight: 700; margin: 0 0 8px; line-height: 1.4; }
.ns-work-card__tags  { display: flex; gap: 6px; flex-wrap: wrap; }
.ns-work-tag { background: var(--ns-gray-200); color: var(--ns-text-sub); font-size: .72rem; font-weight: 600; padding: 3px 10px; border-radius: var(--ns-radius-pill); }

/* =============================================================
   強み3ポイント
   ============================================================= */
.ns-strengths-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.ns-strength-card  { text-align: center; padding: 36px 24px; background: rgba(255,255,255,.04); border-radius: var(--ns-radius-lg); border: 1px solid rgba(255,255,255,.08); }
.ns-strength-card__icon  { font-size: 2.8rem; margin-bottom: 16px; }
.ns-strength-card__title { font-size: 1.1rem; font-weight: 700; color: var(--ns-copper-light); margin: 0 0 12px; }
.ns-strength-card__desc  { font-size: .88rem; color: rgba(255,255,255,.65); line-height: 1.8; margin: 0; }

/* =============================================================
   会員登録フォーム
   ============================================================= */
.ns-register-wrap { max-width: 560px; margin: 60px auto; padding: 0 24px; }
.ns-register-card { background: var(--ns-white); border-radius: var(--ns-radius-lg); box-shadow: var(--ns-shadow-lg); padding: 48px; border-top: 4px solid var(--ns-copper); }
.ns-register-title { font-size: 1.5rem; font-weight: 900; margin: 0 0 8px; }
.ns-register-desc  { color: var(--ns-text-sub); margin: 0 0 32px; font-size: .9rem; line-height: 1.7; }
.ns-form-field        { margin-bottom: 20px; }
.ns-form-field label  { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.ns-form-field input  { width: 100%; padding: 12px 16px; border: 1.5px solid var(--ns-gray-300); border-radius: var(--ns-radius); font-size: 1rem; font-family: var(--ns-font-base); transition: var(--ns-transition); }
.ns-form-field input:focus { outline: none; border-color: var(--ns-copper); box-shadow: 0 0 0 3px rgba(184,115,51,.12); }
.ns-required { color: #E53E3E; font-size: .8rem; margin-left: 4px; }

.ns-error-msg   { background: #FFF5F5; border: 1px solid #FEB2B2; color: #C53030; border-radius: var(--ns-radius); padding: 12px 16px; font-size: .88rem; margin-bottom: 20px; }
.ns-success-msg { background: #F0FFF4; border: 1px solid #9AE6B4; color: #276749; border-radius: var(--ns-radius); padding: 12px 16px; font-size: .88rem; margin-bottom: 20px; }

/* =============================================================
   会社概要テーブル
   ============================================================= */
.ns-company-table th, .ns-company-table td { padding: 14px 20px; border-bottom: 1px solid var(--ns-gray-300); font-size: .95rem; vertical-align: top; }
.ns-company-table th { width: 180px; font-weight: 700; color: var(--ns-text-sub); background: var(--ns-gray-100); }
.ns-company-table { width: 100%; border-collapse: collapse; }

/* =============================================================
   フッター
   ============================================================= */
.site-footer, .l-footer { background: var(--ns-dark) !important; color: rgba(255,255,255,.7) !important; border-top: 3px solid var(--ns-copper) !important; }
.l-footer a       { color: rgba(255,255,255,.6) !important; }
.l-footer a:hover { color: var(--ns-copper-light) !important; }

/* =============================================================
   レスポンシブ
   ============================================================= */
@media (max-width: 768px) {
  .ns-hero__inner    { grid-template-columns: 1fr; gap: 32px; }
  .ns-hero           { padding: 60px 0 48px; }
  .ns-hero__image    { order: -1; }
  .ns-strengths-grid { grid-template-columns: 1fr; }
  .ns-calc-panels    { padding: 20px; }
  .ns-field-row      { grid-template-columns: 1fr; }
  .ns-register-card  { padding: 28px 20px; }
  .ns-company-table th { width: 120px; }
  .ns-chat-window    { right: 12px; width: calc(100vw - 24px); }
  .ns-chat-trigger   { right: 12px; bottom: 12px; }
}