/* ============================================
   管工事PASS - 共通スタイルシート
   style.css v1.0
   ============================================ */

/* --- Google Fonts ---
   HTMLのheadで以下を読み込むこと：
   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700;900&family=Noto+Sans+JP:wght@400;500;700&family=Oswald:wght@600;700&display=swap" rel="stylesheet">
*/

/* ===== CSS変数（カラーパレット） ===== */
:root {
  /* ベースカラー */
  --navy:        #0a1628;
  --navy-mid:    #112240;
  --navy-light:  #1a2d4a;

  /* アクセントカラー */
  --blue:        #1a56db;
  --blue-light:  #3b82f6;
  --cyan:        #06b6d4;
  --cyan-dim:    rgba(6, 182, 212, 0.12);

  /* ステータスカラー */
  --gold:        #f59e0b;
  --gold-light:  #fbbf24;
  --green:       #10b981;
  --red:         #ef4444;
  --purple:      #8b5cf6;
  --orange:      #f97316;

  /* テキストカラー */
  --white:       #f8fafc;
  --gray-light:  #e2e8f0;
  --gray:        #94a3b8;
  --gray-dark:   #64748b;

  /* ボーダー */
  --border:      rgba(255, 255, 255, 0.08);
  --border-cyan: rgba(6, 182, 212, 0.25);

  /* フォント */
  --font-sans:   'Noto Sans JP', sans-serif;
  --font-serif:  'Noto Serif JP', serif;
  --font-display:'Oswald', sans-serif;

  /* スペーシング */
  --max-width:   1200px;
  --section-pad: 6rem 2rem;
  --header-h:    64px;

  /* シャドウ */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:   0 8px 24px rgba(0,0,0,0.4);
  --shadow-cyan: 0 8px 30px rgba(6,182,212,0.15);
}

/* ===== リセット ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--navy);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: var(--font-sans); }

/* ===== レイアウト共通 ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-pad);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ===== 見出し共通 ===== */
.section-label {
  font-size: 0.72rem;
  letter-spacing: 3px;
  color: var(--cyan);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  display: block;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.8;
  max-width: 600px;
  margin-bottom: 3rem;
}

/* ===== ヘッダー ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(10, 22, 40, 0.93);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  justify-content: space-between;
}

.site-header .logo {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  text-decoration: none;
}

.logo-main {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 2px;
}

.logo-sub {
  font-size: 0.68rem;
  color: var(--gray);
  letter-spacing: 0.5px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  color: var(--gray);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.2s;
  padding: 0.3rem 0;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transition: transform 0.2s;
}

.site-nav a:hover { color: var(--cyan); }
.site-nav a:hover::after { transform: scaleX(1); }

.site-nav a.active { color: var(--white); }
.site-nav a.active::after { transform: scaleX(1); background: var(--gold); }

/* ハンバーガー（SP用） */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-light);
  border-radius: 1px;
  transition: all 0.3s;
}

/* ===== フッター ===== */
.site-footer {
  background: rgba(0, 0, 0, 0.45);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.footer-brand .logo-main { font-size: 1.3rem; }

.footer-brand-desc {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.7;
  margin-top: 0.6rem;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gray-light);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  font-size: 0.82rem;
  color: var(--gray);
  padding: 0.25rem 0;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--gray-dark);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  font-size: 0.75rem;
  color: var(--gray-dark);
  transition: color 0.2s;
}

.footer-legal a:hover { color: var(--gray); }

/* ===== ページ共通 ===== */
.page-top-pad {
  padding-top: calc(var(--header-h) + 1px);
}

/* ===== ボタン ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 700;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #fff;
  box-shadow: 0 4px 20px rgba(26, 86, 219, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(26, 86, 219, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--gray-light);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.btn-secondary:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.82rem;
}

/* ===== カード共通 ===== */
.card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.8rem;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.card:hover {
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-3px);
}

.card-top-line {
  position: relative;
  overflow: hidden;
}

.card-top-line::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

/* ===== バッジ・タグ ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.badge-cyan {
  background: var(--cyan-dim);
  border: 1px solid var(--border-cyan);
  color: var(--cyan);
}

.badge-gold {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--gold);
}

.badge-green {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--green);
}

/* ===== 分割線 ===== */
.divider {
  height: 1px;
  background: var(--border);
  margin: 2rem 0;
}

.divider-cyan {
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  margin: 2rem 0;
}

/* ===== 広告プレースホルダー ===== */
/* 本番はdisplay:noneして実際のAdSenseコードに差し替え */
.ad-placeholder {
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.15);
  font-size: 0.72rem;
  letter-spacing: 1px;
}

/* AdSense実際のコードを入れるラッパー */
.ad-wrap {
  text-align: center;
  overflow: hidden;
  margin: 1.5rem auto;
}

.ad-wrap-728 { max-width: 728px; height: 90px; }
.ad-wrap-336 { max-width: 336px; height: 280px; }
.ad-wrap-320 { max-width: 320px; height: 100px; } /* SP用 */

/* ===== プログレスバー ===== */
.progress-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transition: width 0.5s ease;
}

/* ===== アニメーション ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

@keyframes barGrow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.anim-fade-up   { animation: fadeInUp   0.6s ease both; }
.anim-fade-down { animation: fadeInDown 0.6s ease both; }

/* ===== ユーティリティ ===== */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-cyan   { color: var(--cyan); }
.text-gold   { color: var(--gold); }
.text-green  { color: var(--green); }
.text-gray   { color: var(--gray); }
.text-serif  { font-family: var(--font-serif); }
.text-display{ font-family: var(--font-display); }
.fw-bold     { font-weight: 700; }
.fw-black    { font-weight: 900; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  :root {
    --section-pad: 4rem 1.2rem;
    --header-h: 56px;
  }

  .site-nav { display: none; }
  .hamburger { display: flex; }

  /* SPナビ展開時 */
  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(10, 22, 40, 0.98);
    padding: 1.5rem 2rem;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav.open a {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 1rem;
  }

  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-links-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .footer-links-grid { grid-template-columns: 1fr; }
  .btn { padding: 0.75rem 1.3rem; font-size: 0.88rem; }
}