/* =========================================================
   株式会社アイダ  LP  —  style.css
   Palette: Ocean Blue × Earth (信頼・グローバル・温かみ・架け橋)
   ========================================================= */
:root{
  --navy:#0b3a5b;
  --navy-2:#0e4d75;
  --blue:#1c8fc7;
  --blue-light:#5fd0ff;
  --earth:#c8762d;
  --earth-light:#e2a35a;
  --sand:#f3ece1;
  --ink:#1d2a33;
  --muted:#5b6b76;
  --line:#e3e8ec;
  --white:#ffffff;
  --bg:#ffffff;
  --grad-bridge:linear-gradient(100deg,var(--blue) 0%,var(--blue-light) 40%,var(--earth-light) 100%);
  --grad-navy:linear-gradient(160deg,var(--navy) 0%,#072a44 100%);
  --shadow:0 18px 50px -22px rgba(11,58,91,.35);
  --shadow-sm:0 8px 24px -14px rgba(11,58,91,.4);
  --radius:18px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{
  font-family:"Noto Sans JP",system-ui,-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.85;
  font-feature-settings:"palt";letter-spacing:.02em;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}

.en{font-family:"Montserrat",sans-serif;letter-spacing:.12em}
.container{width:min(92%,var(--maxw));margin-inline:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;font-size:.78rem;font-weight:700;
  letter-spacing:.22em;color:var(--blue);text-transform:uppercase;
}
.eyebrow::before{content:"";width:30px;height:2px;background:var(--grad-bridge)}
.section{padding:clamp(64px,9vw,120px) 0}
.section-head{max-width:720px;margin-bottom:clamp(34px,5vw,58px)}
.section-head.center{margin-inline:auto;text-align:center}
.section-title{
  font-family:"Noto Serif JP",serif;font-weight:700;line-height:1.35;
  font-size:clamp(1.7rem,4.2vw,2.7rem);margin:.4em 0 .5em;letter-spacing:.02em;
}
.section-title .accent{
  background:var(--grad-bridge);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{color:var(--muted);font-size:clamp(.98rem,1.6vw,1.08rem)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  font-weight:700;padding:.95em 1.8em;border-radius:999px;cursor:pointer;border:0;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
  font-size:.98rem;white-space:nowrap;
}
.btn-primary{background:var(--grad-bridge);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px -14px rgba(28,143,199,.7)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-3px)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{transform:translateY(-3px);background:var(--navy-2)}
.btn .ar{transition:transform .25s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}

/* ---------- Header ---------- */
.header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .3s,box-shadow .3s,padding .3s;padding:18px 0;
}
.header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line);padding:10px 0}
.header.scrolled.menu-open{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}
.nav{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:.7em}
.brand img{height:42px;width:auto;filter:brightness(0) invert(1)}
.header.scrolled .brand img{filter:none}
.brand-name{display:flex;flex-direction:column;line-height:1.15;color:#fff;transition:color .3s}
.header.scrolled .brand-name{color:var(--navy)}
.brand-name b{font-size:1.12rem;font-weight:800;letter-spacing:.06em}
.brand-name span{font-size:.62rem;letter-spacing:.34em;opacity:.8;font-family:"Montserrat",sans-serif}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2vw,30px)}
.nav-links a{font-size:.9rem;font-weight:600;color:#fff;transition:color .3s,opacity .3s;opacity:.92}
.header.scrolled .nav-links a{color:var(--ink)}
.nav-links a:hover{opacity:1;color:var(--blue-light)}
.header.scrolled .nav-links a:hover{color:var(--blue)}
.nav-links .btn{padding:.6em 1.3em;font-size:.85rem}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;z-index:120}
.nav-toggle span{width:26px;height:2px;background:#fff;transition:.3s;border-radius:2px}
.header.scrolled .nav-toggle span{background:var(--navy)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;color:#fff;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-3}
.hero-bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);animation:heroZoom 18s ease-out forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero::before{content:"";position:absolute;inset:0;z-index:-2;
  background:linear-gradient(105deg,rgba(7,33,52,.92) 0%,rgba(11,58,91,.7) 45%,rgba(11,58,91,.25) 100%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-2;
  background:linear-gradient(to top,rgba(7,28,45,.85),transparent 38%)}
.hero-globe{position:absolute;right:-6%;top:50%;transform:translateY(-50%);width:min(56vw,640px);z-index:-1;opacity:.9;
  animation:spinSlow 60s linear infinite}
@keyframes spinSlow{to{transform:translateY(-50%) rotate(360deg)}}
.hero-inner{padding:120px 0 90px}
.hero .eyebrow{color:var(--blue-light)}
.hero .eyebrow::before{background:var(--blue-light)}
.hero h1{
  font-family:"Noto Serif JP",serif;font-weight:700;line-height:1.4;
  font-size:clamp(2rem,5.6vw,3.7rem);margin:.5em 0 .1em;max-width:16em;
  text-shadow:0 4px 30px rgba(0,0,0,.3);
}
.hero h1 .aida{
  background:var(--grad-bridge);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-style:normal;font-size:1.3em;
}
.hero .sub-en{font-family:"Montserrat",sans-serif;letter-spacing:.16em;font-weight:600;
  font-size:clamp(.8rem,1.8vw,1rem);opacity:.85;margin-bottom:1.6em}
.hero p.desc{max-width:34em;color:rgba(255,255,255,.9);font-size:clamp(.96rem,1.7vw,1.1rem);margin-bottom:2.2em}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:1;
  display:flex;flex-direction:column;align-items:center;gap:8px;font-size:.65rem;letter-spacing:.3em;
  font-family:"Montserrat",sans-serif;opacity:.8}
.scroll-cue::after{content:"";width:1px;height:46px;background:linear-gradient(#fff,transparent);animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%,100%{opacity:.2;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- Trust strip ---------- */
.trust{background:var(--navy);color:#fff}
.trust .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:34px 0}
.trust .item{text-align:center}
.trust .num{font-family:"Montserrat",sans-serif;font-weight:800;font-size:clamp(1.5rem,3.4vw,2.3rem);
  background:var(--grad-bridge);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.trust .lbl{font-size:.78rem;color:rgba(255,255,255,.72);margin-top:.3em}

/* ---------- Concept ---------- */
.concept{background:linear-gradient(180deg,#fff, var(--sand))}
.concept-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,70px);align-items:center}
.concept-copy h2{font-family:"Noto Serif JP",serif;font-size:clamp(1.6rem,3.6vw,2.5rem);line-height:1.5;margin:.3em 0 .7em}
.concept-copy .between{position:relative;display:inline-block}
.concept-copy .between b{background:var(--grad-bridge);-webkit-background-clip:text;background-clip:text;color:transparent}
.concept-copy p{color:var(--muted);margin-bottom:1.1em}
.concept-figure{position:relative}
.concept-figure img{border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio:4/5;object-fit:cover}
.concept-figure .badge{
  position:absolute;left:-22px;bottom:30px;background:#fff;border-radius:14px;padding:16px 22px;
  box-shadow:var(--shadow);max-width:230px}
.concept-figure .badge .k{font-family:"Noto Serif JP",serif;font-weight:700;color:var(--navy);font-size:1.05rem}
.concept-figure .badge .v{font-size:.8rem;color:var(--muted)}

/* greeting */
.greeting{margin-top:clamp(40px,6vw,80px);background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:clamp(28px,4vw,48px);box-shadow:var(--shadow);position:relative;overflow:hidden}
.greeting::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--grad-bridge)}
.greeting .quote{font-family:"Noto Serif JP",serif;font-size:clamp(1.1rem,2.4vw,1.5rem);line-height:1.7;margin-bottom:1em}
.greeting p{color:var(--muted);margin-bottom:.8em}
.greeting .sign{display:flex;align-items:baseline;gap:.8em;margin-top:1.4em}
.greeting .sign .role{font-size:.82rem;color:var(--muted)}
.greeting .sign .who{font-family:"Noto Serif JP",serif;font-size:clamp(1.5rem,3vw,1.95rem);font-weight:700}

/* ---------- Services ---------- */
.services{background:var(--white)}
.svc-list{display:grid;gap:clamp(26px,4vw,40px)}
.svc{display:grid;grid-template-columns:1fr 1fr;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);background:#fff;border:1px solid var(--line)}
.svc:nth-child(even) .svc-media{order:2}
.svc-media{position:relative;min-height:340px}
.svc-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.svc-media .no{position:absolute;left:24px;top:20px;font-family:"Montserrat",sans-serif;font-weight:800;
  font-size:3.4rem;color:rgba(255,255,255,.9);text-shadow:0 6px 24px rgba(0,0,0,.4);line-height:1}
.svc-body{padding:clamp(28px,4vw,52px);display:flex;flex-direction:column;justify-content:center}
.svc-body .tag{display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.14em;
  color:var(--blue);background:rgba(28,143,199,.1);padding:.4em 1em;border-radius:999px;margin-bottom:1em;width:fit-content}
.svc-body .tag.earth{color:var(--earth);background:rgba(200,118,45,.12)}
.svc-body h3{font-family:"Noto Serif JP",serif;font-size:clamp(1.35rem,2.8vw,1.9rem);margin-bottom:.5em;line-height:1.4}
.svc-body .h-en{font-family:"Montserrat",sans-serif;font-size:.72rem;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;margin-bottom:.9em}
.svc-body p{color:var(--muted);margin-bottom:1.2em}
.svc-points{display:grid;gap:.55em}
.svc-points li{position:relative;padding-left:1.7em;font-size:.92rem}
.svc-points li::before{content:"";position:absolute;left:0;top:.55em;width:11px;height:11px;border-radius:50%;
  background:var(--grad-bridge)}
.svc-points li b{color:var(--ink)}

/* ---------- Recruit ---------- */
.recruit{position:relative;color:#fff;overflow:hidden;isolation:isolate}
.recruit-bg{position:absolute;inset:0;z-index:-2}
.recruit-bg img{width:100%;height:100%;object-fit:cover}
.recruit::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(120deg,rgba(11,58,91,.95),rgba(11,58,91,.7) 60%,rgba(200,118,45,.55))}
.recruit .section-title{color:#fff}
.recruit .lead{color:rgba(255,255,255,.85)}
.jobs{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:38px auto;max-width:760px}
.job{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:26px 24px;
  backdrop-filter:blur(6px);transition:transform .3s var(--ease),background .3s}
.job:hover{transform:translateY(-6px);background:rgba(255,255,255,.14)}
.job .ic{font-size:1.6rem;margin-bottom:.4em}
.job h4{font-size:1.12rem;margin-bottom:.4em;font-family:"Noto Serif JP",serif}
.job p{font-size:.85rem;color:rgba(255,255,255,.8)}
.job .meta{margin-top:1em;font-size:.78rem;color:var(--blue-light);font-weight:700;letter-spacing:.05em}
.recruit-note{font-size:.82rem;color:rgba(255,255,255,.7)}

/* ---------- Company ---------- */
.company{background:var(--sand)}
.company-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:start}
.info-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.info-table th,.info-table td{text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);font-size:.92rem;vertical-align:top}
.info-table th{width:34%;background:#fbfaf7;color:var(--navy);font-weight:700;white-space:nowrap}
.info-table tr:last-child th,.info-table tr:last-child td{border-bottom:0}
.cert{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px}
.cert .c{flex:1 1 220px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--earth);border-radius:12px;padding:16px 20px;box-shadow:var(--shadow-sm)}
.cert .c .t{font-size:.74rem;color:var(--muted);letter-spacing:.08em}
.cert .c .n{font-family:"Montserrat",sans-serif;font-weight:700;color:var(--navy);font-size:1.02rem;margin-top:.2em}
.map-card{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff}
.map-card iframe{width:100%;height:100%;min-height:340px;border:0;display:block}

/* ---------- Contact ---------- */
.contact{background:var(--grad-navy);color:#fff}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(30px,5vw,64px);align-items:start}
.contact-intro h2{font-family:"Noto Serif JP",serif;font-size:clamp(1.6rem,3.4vw,2.4rem);margin:.3em 0 .6em}
.contact-intro p{color:rgba(255,255,255,.82);margin-bottom:1.4em}
.contact-meta{display:grid;gap:14px;margin-top:1.6em}
.contact-meta a,.contact-meta div{display:flex;align-items:center;gap:.8em;color:#fff;font-size:.95rem}
.contact-meta .ic{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:rgba(255,255,255,.1);flex:none}
.form{background:#fff;color:var(--ink);border-radius:var(--radius);padding:clamp(24px,3.5vw,40px);box-shadow:var(--shadow)}
.form .row{display:grid;gap:6px;margin-bottom:16px}
.form .row.two{grid-template-columns:1fr 1fr;gap:16px}
.form label{font-size:.82rem;font-weight:700;color:var(--navy)}
.form label .req{color:var(--earth);font-size:.7rem;margin-left:.4em}
.form input,.form select,.form textarea{
  width:100%;padding:.8em 1em;border:1.5px solid var(--line);border-radius:10px;font:inherit;background:#fbfcfd;
  transition:border-color .2s,box-shadow .2s}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(28,143,199,.15);outline:0}
.form textarea{min-height:120px;resize:vertical}
.form .btn{width:100%;margin-top:6px}
.form .note{font-size:.74rem;color:var(--muted);margin-top:12px;text-align:center}
.form-msg{display:none;padding:14px 16px;border-radius:10px;background:#e8f6ee;color:#1c7a45;font-size:.88rem;font-weight:600;margin-bottom:14px}
.form-msg.show{display:block}

/* ---------- Footer ---------- */
.footer{background:#06223a;color:rgba(255,255,255,.7);padding:54px 0 28px}
.footer-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer .brand-name b,.footer .brand-name span{color:#fff}
.footer-nav{display:flex;gap:22px;flex-wrap:wrap}
.footer-nav a{font-size:.86rem;transition:color .2s}
.footer-nav a:hover{color:var(--blue-light)}
.footer-social{padding-top:20px;display:flex;gap:16px}
.footer-social a{color:rgba(255,255,255,.7);transition:color .3s,transform .3s}
.footer-social a:hover{color:var(--blue-light);transform:translateY(-2px)}
.footer-docs{display:flex;flex-wrap:wrap;gap:18px;padding-top:22px;font-size:.82rem}
.footer-docs a{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.82);text-decoration:none;border-bottom:1px solid rgba(255,255,255,.25);padding-bottom:2px;transition:color .2s,border-color .2s}
.footer-docs a:hover{color:var(--blue-light);border-color:var(--blue-light)}
.footer-docs a::before{content:"📄"}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px;font-size:.76rem}
.footer-bottom .en{opacity:.6}

/* ---------- Reveal animation ---------- */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal][data-delay="1"]{transition-delay:.12s}
[data-reveal][data-delay="2"]{transition-delay:.24s}
[data-reveal][data-delay="3"]{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive ---------- */
@media (max-width:920px){
  .concept-grid,.company-grid,.contact-grid{grid-template-columns:1fr}
  .svc,.svc:nth-child(even) .svc-media{grid-template-columns:1fr}
  .svc-media{order:-1!important;min-height:260px}
  .jobs{grid-template-columns:1fr 1fr}
  .concept-figure{max-width:460px;margin-inline:auto}
}
@media (max-width:760px){
  .nav-links{position:fixed;inset:0 0 0 auto;width:min(80%,320px);background:var(--navy);
    flex-direction:column;align-items:flex-start;justify-content:center;gap:26px;padding:40px;
    transform:translateX(100%);transition:transform .4s var(--ease);box-shadow:-20px 0 60px rgba(0,0,0,.3);z-index:110}
  .nav-links.open{transform:none}
  .nav-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:105;
    opacity:0;visibility:hidden;transition:opacity .35s var(--ease)}
  .nav-backdrop.open{opacity:1;visibility:visible}
  .nav-links a{color:#fff!important;font-size:1.05rem}
  .header.scrolled .nav-links a{color:#fff!important}
  .nav-toggle{display:flex}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .header.scrolled .nav-toggle.open span{background:#fff}
  .trust .container{grid-template-columns:1fr 1fr;gap:26px}
  .jobs{grid-template-columns:1fr}
  .form .row.two{grid-template-columns:1fr}
  .concept-figure .badge{left:0}
}
@media (max-width:420px){
  .hero h1{font-size:1.85rem}
  .trust .container{grid-template-columns:1fr 1fr}
}