/* ==========================================================================
   LocalMind Inc. — Design Tokens (White-based)
   Concept: 外部に頼らない“ローカル稼働”を示すターミナル/ステータスLEDのモチーフ。
   ベースは白 / 明るいグレーで統一し、ターミナル端末部のみ意図的にダークな
   "デバイスの筐体"として残すことでコントラストの効いたアクセントにする。
   AI系タグ=グリーン(稼働LED) / GIS・IoT系タグ=アンバー(センサー信号)
   ========================================================================== */
:root{
  --ink: #10141C;         /* 見出し・本文の基本色（濃紺に近い黒） */
  --panel: #10151f;       /* ターミナル筐体のみで使用するダーク背景 */
  --panel-line: #262f42;
  --paper: #FFFFFF;       /* サイト全体のベース背景（白） */
  --paper-alt: #F5F6F8;   /* セクションの区切り用の淡いグレー */
  --paper-card: #FFFFFF;
  --steel: #5B6472;
  --steel-dark: #262E3B;
  --signal: #16A34A;      /* 白背景で読みやすいグリーン（テキスト・線） */
  --signal-bright: #4ADE80; /* ダーク面（ターミナル等）専用の明るいグリーン */
  --signal-dim: #16A34A;
  --amber: #B45309;       /* 白背景で読みやすいアンバー */
  --amber-bright: #F5A524; /* ダーク面専用の明るいアンバー */
  --amber-dim: #B45309;
  --line: rgba(16,20,28,0.10);
  --line-dark: rgba(16,20,28,0.10);

  --font-display: "Shippori Mincho", "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --font-body: "Noto Serif JP", "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-mono: "Zen Old Mincho", "Noto Serif JP", serif;   /* ラベル・タグ等の見出し系（明朝） */
  --font-code: "JetBrains Mono", "Space Mono", monospace;  /* ターミナル演出のみ使用 */

  --radius: 4px;
  --container: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--steel-dark);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.75;
  font-size: 16px;
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

h1,h2,h3,h4,.display{
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0;
}
a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display:block; }
.container-xl{ max-width: var(--container); margin: 0 auto; padding: 0 24px; }

::selection{ background: var(--signal-bright); color: var(--ink); }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- eyebrow / mono labels ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.eyebrow::before{
  content:"";
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(22,163,74,0.16);
}
.eyebrow.amber{ color: var(--amber); }
.eyebrow.amber::before{ background: var(--amber); box-shadow: 0 0 0 4px rgba(180,83,9,0.16); }
.eyebrow.on-dark{ color: var(--signal-bright); }

/* ---------- Navbar ---------- */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 1000;
  background: rgba(255,255,255,0.90);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: background .3s ease;
}
.navbar{ padding: 14px 0; }
.brand{
  display:flex; align-items:center; gap:10px;
  font-family: var(--font-mono);
  font-weight: 700; font-size: 1.02rem; color: var(--ink);
}
.brand .brand-led{
  width:9px; height:9px; border-radius:50%; background: var(--signal);
  box-shadow: 0 0 8px rgba(22,163,74,0.6);
  animation: blink 2.6s ease-in-out infinite;
}
.brand small{ display:block; font-family: var(--font-body); font-weight:400; font-size:0.62rem; color:#8a93a6; letter-spacing:0.04em; }
@media (max-width: 480px){ .brand{ font-size:0.86rem; } }

.nav-link-custom{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--steel-dark) !important;
  padding: 8px 14px !important;
  position: relative;
}
.nav-link-custom:hover{ color: var(--ink) !important; }
.nav-link-custom.cta{
  color: #fff !important;
  background: var(--signal);
  border-radius: 3px;
  font-weight: 700;
}
.nav-link-custom.cta:hover{ background:#128a3e; }
.navbar-toggler{ border-color: var(--line) !important; }
.navbar-toggler-icon{ filter: none; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  background: var(--paper);
  color: var(--ink);
  padding: 168px 0 96px;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    radial-gradient(circle, rgba(16,20,28,0.08) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, black 20%, transparent 75%);
  z-index: -1;
}
.hero-grid{
  display:grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items:center;
}
@media (max-width: 991px){ .hero-grid{ grid-template-columns: 1fr; } }

.hero h1{
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  line-height: 1.28;
  color: var(--ink);
}
.hero h1 .accent{ color: var(--signal); }
.hero p.lead{
  font-family: var(--font-body);
  color: var(--steel);
  font-size: 1.05rem;
  margin: 22px 0 34px;
  max-width: 46ch;
}
.btn-row{ display:flex; gap:14px; flex-wrap: wrap; }
.btn-signal{
  font-family: var(--font-mono);
  font-size:0.86rem;
  background: var(--signal);
  color: #fff;
  border: none;
  padding: 13px 26px;
  border-radius: 3px;
  font-weight: 700;
  transition: transform .15s ease, background .2s ease;
  display:inline-flex; align-items:center; gap:8px;
}
.btn-signal:hover{ background:#128a3e; transform: translateY(-1px); color: #fff; }
.btn-outline-ghost{
  font-family: var(--font-mono);
  font-size:0.86rem;
  background: transparent;
  color: var(--ink);
  border: 1px solid #d6dae0;
  padding: 13px 26px;
  border-radius: 3px;
  transition: border-color .2s ease, background .2s ease;
}
.btn-outline-ghost:hover{ border-color: var(--signal); background: rgba(22,163,74,0.06); color: var(--ink); }

/* signature terminal panel — 意図的にダークな筐体として残す */
.terminal{
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  box-shadow: 0 30px 70px -32px rgba(16,20,28,0.35);
  overflow: hidden;
}
.terminal-bar{
  display:flex; align-items:center; gap:8px;
  padding: 11px 14px;
  background: #0b0f17;
  border-bottom: 1px solid var(--panel-line);
}
.terminal-bar span{ width:10px; height:10px; border-radius:50%; display:inline-block; background:#3a4257; flex-shrink:0; }
.terminal-bar .title{
  font-family: var(--font-code);
  margin-left: 8px;
  font-size: 0.72rem;
  color: #6b7488;
  flex: 1 1 auto;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.terminal-body{
  padding: 20px 22px 24px;
  font-family: var(--font-code);
  font-size: 0.82rem;
  color: #9fb0c9;
  min-height: 280px;
}
.terminal-body .ln{ margin-bottom: 7px; opacity:0; animation: typeIn .45s ease forwards; white-space: pre-wrap; }
.terminal-body .ok{ color: var(--signal-bright); }
.terminal-body .warn{ color: var(--amber-bright); }
.terminal-body .dim{ color:#5b657c; }
.cursor{ display:inline-block; width:7px; height:14px; background: var(--signal-bright); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes typeIn{ to{ opacity:1; } }
@keyframes blink{ 0%,100%{ opacity:1; } 50%{ opacity:0.15; } }

/* ---------- Sections generic ---------- */
section{ padding: 96px 0; }
.section-alt{ background: var(--paper-alt); color: var(--ink); }
.section-alt .steel-text{ color: var(--steel); }
.section-head{ max-width: 640px; margin-bottom: 56px; }
.section-head h2{ font-size: clamp(1.6rem, 3vw, 2.3rem); line-height:1.35; }
.section-head p{ color: var(--steel); margin-top:14px; font-size: 1rem; }
.section-alt .section-head p{ color: var(--steel); }

/* ---------- capability strip ---------- */
.cap-strip{ background: var(--paper-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.cap-strip .row-cap{ display:flex; flex-wrap:wrap; gap: 0; }
.cap-item{
  flex:1 1 220px; padding: 26px 24px; border-right: 1px solid var(--line);
  font-family: var(--font-mono); color: var(--steel);
}
.cap-item:last-child{ border-right:none; }
.cap-item .n{ color: var(--signal); font-size:0.72rem; letter-spacing:0.1em; }
.cap-item .t{ color: var(--ink); font-family: var(--font-body); font-weight:700; margin-top:6px; font-size:0.98rem; }

/* ---------- cards ---------- */
.card-grid{ display:grid; gap: 22px; }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
@media (max-width: 991px){ .grid-3, .grid-4{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px){ .grid-2, .grid-3, .grid-4{ grid-template-columns: 1fr; } }

.svc-card{
  background: var(--paper-card);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.svc-card:hover{ transform: translateY(-4px); box-shadow: 0 20px 40px -22px rgba(16,20,28,0.14); border-color: var(--signal); }
.svc-card .icon{
  width:42px; height:42px; border-radius:8px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(22,163,74,0.10); color: var(--signal);
  font-size: 1.2rem; margin-bottom: 18px;
}
.svc-card.amber .icon{ background: rgba(180,83,9,0.10); color: var(--amber); }
.svc-card h3{ font-size: 1.08rem; margin-bottom: 10px; }
.svc-card p{ color: var(--steel); font-size: 0.92rem; margin:0; }
.tag-row{ margin-top:16px; display:flex; flex-wrap:wrap; gap:8px; }
.tag{
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing:0.02em;
  padding: 4px 9px; border-radius: 20px;
  background: rgba(22,163,74,0.08); color: var(--signal);
  border:1px solid rgba(22,163,74,0.25);
}
.tag.amber{ background: rgba(180,83,9,0.08); color: var(--amber); border-color: rgba(180,83,9,0.25); }

/* feature list rows (used for GIS / IoT dense listing) */
.feat-list{ display:grid; grid-template-columns: repeat(2,1fr); gap: 0 40px; }
@media (max-width: 767px){ .feat-list{ grid-template-columns: 1fr; } }
.feat-row{
  display:flex; align-items:flex-start; gap: 14px;
  padding: 15px 0; border-bottom: 1px solid var(--line-dark);
}
.feat-row .dot{ color: var(--amber); font-family: var(--font-mono); font-size:0.75rem; margin-top:5px; }
.feat-row .txt{ font-size: 0.94rem; color: var(--steel-dark); }
.section-alt .feat-row{ border-bottom-color: var(--line); }
.section-alt .feat-row .txt{ color: var(--steel-dark); }

/* ---------- photo blocks ---------- */
.photo-frame{
  border-radius: var(--radius); overflow:hidden; position:relative;
  border: 1px solid var(--line-dark);
  background: var(--paper-alt);
}
.photo-frame img{ width:100%; height:100%; object-fit: cover; }
.photo-tag{
  position:absolute; left:14px; bottom:14px;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing:0.08em;
  color:#fff; background: rgba(16,20,28,0.72); padding: 5px 10px; border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.14);
}

.split{ display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:center; }
@media (max-width: 991px){ .split{ grid-template-columns: 1fr; gap: 34px; } }
.split.rev{ direction: rtl; }
.split.rev > *{ direction: ltr; }

/* ---------- process ---------- */
.process-row{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
@media (max-width: 767px){ .process-row{ grid-template-columns: 1fr; } }
.process-step{ position:relative; padding-top: 10px; }
.process-step .num{
  font-family: var(--font-mono); font-size: 2.6rem; font-weight:700;
  color: transparent; -webkit-text-stroke: 1.4px rgba(16,20,28,0.18);
}
.process-step h3{ color: var(--ink); margin: 6px 0 10px; font-size: 1.1rem; }
.process-step p{ color: var(--steel); font-size:0.92rem; margin:0; }
.process-step:not(:last-child)::after{
  content:""; position:absolute; top:34px; right:-15px; width:30px; height:1px;
  background: var(--line); display:none;
}
@media (min-width:768px){ .process-step:not(:last-child)::after{ display:block; } }

/* ---------- contact ---------- */
.contact-wrap{
  background: var(--paper-card);
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  padding: 44px;
  box-shadow: 0 40px 90px -55px rgba(16,20,28,0.22);
}
@media (max-width: 640px){ .contact-wrap{ padding: 26px; } }
.form-label-custom{
  font-family: var(--font-mono); font-size: 0.76rem; letter-spacing:0.06em;
  color: var(--steel); text-transform: uppercase; margin-bottom:8px; display:block;
}
.form-control-custom{
  width:100%; padding: 12px 14px; border: 1px solid #d8dce1; border-radius: 4px;
  font-family: var(--font-body); font-size: 0.95rem; background:#fbfbfa;
  transition: border-color .2s ease, background .2s ease;
}
.form-control-custom:focus{ outline:none; border-color: var(--signal); background:#fff; }
textarea.form-control-custom{ resize: vertical; min-height: 130px; }
.captcha-box{ display:flex; align-items:center; gap:14px; flex-wrap: wrap; }
.captcha-box img{ border-radius: 4px; border:1px solid #d8dce1; height:52px; }
.captcha-refresh{
  font-family: var(--font-mono); font-size:0.72rem; color: var(--steel);
  background:#fff; border:1px solid #d8dce1; border-radius:4px; padding:8px 12px;
  cursor:pointer;
}
.captcha-refresh:hover{ border-color: var(--signal); color: var(--signal); }
#formStatus{ font-family: var(--font-mono); font-size:0.85rem; margin-top: 18px; padding: 12px 14px; border-radius:4px; display:none; }
#formStatus.ok{ display:block; background: rgba(22,163,74,0.08); color:#146c3b; border:1px solid rgba(22,163,74,0.3); }
#formStatus.err{ display:block; background: rgba(220,53,69,0.08); color:#a5222f; border:1px solid rgba(220,53,69,0.28); }

.contact-side{ background: var(--paper-alt); border: 1px solid var(--line); }
.contact-side .eyebrow{ margin-bottom: 20px; }
.contact-info-row{ display:flex; gap:14px; padding: 16px 0; border-bottom:1px solid var(--line); }
.contact-info-row:last-child{ border-bottom:none; }
.contact-info-row .lbl{ font-family: var(--font-mono); font-size:0.72rem; color: var(--signal); width:90px; flex-shrink:0; padding-top:2px; }
.contact-info-row .val{ color: var(--steel-dark); font-size:0.92rem; }

/* ---------- footer ---------- */
footer{ background: var(--paper); color: var(--steel); padding: 46px 0 30px; font-size: 0.85rem; border-top: 1px solid var(--line); }
footer .brand{ color: var(--ink); }
footer .foot-grid{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px; border-top:1px solid var(--line); padding-top:24px; margin-top: 30px;}
footer a{ color: var(--steel); }
footer a:hover{ color: var(--signal); }

/* ---------- reveal on scroll ---------- */
.reveal{ opacity:0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform: translateY(0); }

/* scan line signature ambient (hero) */
.scanline{
  position:absolute; left:0; right:0; height:1px;
  background: linear-gradient(90deg, transparent, rgba(22,163,74,0.5), transparent);
  animation: scan 5s linear infinite;
  z-index: 0;
}
@keyframes scan{ 0%{ top:6%; opacity:0; } 8%{ opacity:1; } 92%{ opacity:1;} 100%{ top:96%; opacity:0; } }

.back-to-top{
  position: fixed; right: 22px; bottom: 22px; z-index: 999;
  width:44px; height:44px; border-radius:50%;
  background: var(--ink); color: var(--signal-bright); border:1px solid var(--panel-line);
  display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transition: opacity .25s ease, transform .2s ease;
  font-size: 1.1rem;
}
.back-to-top.show{ opacity:1; pointer-events:auto; }
.back-to-top:hover{ transform: translateY(-3px); }