/*
Theme Name: KURT 2026
Theme URI: https://kurt.co.jp/
Author: KURT Co., Ltd.
Description: クルト株式会社のコーポレートサイト。建築事務所的なエディトリアル・トーン（コンクリートグレー × グロテスク × 等幅）。WPForms / reCAPTCHA はそのまま利用可。
Version: 1.0.0
Requires at least: 5.8
Requires PHP: 7.4
Text Domain: kurt2026
*/

:root{
  --paper:#D7DAD6;--paper-2:#E7E9E5;--ink:#18191B;--ink-2:#585A57;--charcoal:#1C1D1F;
  --line:rgba(24,25,27,.20);--line-soft:rgba(24,25,27,.11);
  --grotesk:'Archivo','Helvetica Neue',Arial,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --jp:'Zen Kaku Gothic New',sans-serif;
  --pad:clamp(20px,5vw,72px);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--grotesk);font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
::selection{background:var(--charcoal);color:var(--paper)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2)}
.measure{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:absolute;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;padding:22px var(--pad)}
.site-header.solid{position:relative}
.brand{display:inline-flex;align-items:center}
.brand img{height:26px;width:auto}
.site-nav{display:flex;gap:26px}
.site-nav a{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);transition:color .3s}
.site-nav a:hover{color:var(--ink)}
.nav-toggle{display:none;background:none;border:0;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);cursor:pointer}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:0 var(--pad) clamp(28px,5vh,52px)}
.hero-thesis{font-family:var(--jp);font-weight:500;font-size:clamp(40px,8.6vw,118px);line-height:1.06;letter-spacing:.02em;margin-bottom:clamp(20px,3vh,34px)}
.hero-thesis .ln{display:block;overflow:hidden}
.hero-thesis .ln>span{display:block}
.hero-sub{font-family:var(--jp);max-width:48ch;font-size:15px;color:var(--ink-2);letter-spacing:.02em}
.horizon{height:1px;background:var(--line);margin:clamp(26px,4vh,44px) 0 16px;transform-origin:left}
.hero-foot{display:flex;justify-content:space-between;align-items:flex-end;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.scrollcue{display:flex;align-items:center;gap:8px}
.scrollcue .tick{width:1px;height:26px;background:var(--ink-2);animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%,100%{transform:scaleY(.4);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}}

/* ---------- sections ---------- */
.section{padding:clamp(72px,12vh,150px) var(--pad)}
.sec-label{display:flex;gap:16px;align-items:baseline;margin-bottom:clamp(34px,6vh,68px)}
.sec-label .idx{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--ink-2)}

.statement{font-family:var(--jp);max-width:24ch;font-weight:500;font-size:clamp(24px,3.8vw,46px);line-height:1.5;letter-spacing:.03em}
.statement em{font-style:normal;border-bottom:2px solid var(--ink);padding-bottom:2px}
.statement-en{margin-top:clamp(28px,4vh,46px);max-width:56ch;font-size:15px;line-height:1.85;color:var(--ink-2)}

.register{border-top:1px solid var(--line)}
.field-row{display:grid;grid-template-columns:64px 1fr 1.3fr;gap:clamp(16px,4vw,56px);align-items:start;padding:clamp(28px,4.5vh,46px) 0;border-bottom:1px solid var(--line);transition:padding-left .5s cubic-bezier(.16,1,.3,1)}
.field-row:hover{padding-left:14px}
.field-row .num{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--ink-2);padding-top:10px}
.field-row .en{font-family:var(--grotesk);font-weight:600;font-size:clamp(22px,3vw,34px)}
.field-row .jp{font-family:var(--jp);font-weight:400;font-size:13px;letter-spacing:.12em;color:var(--ink-2);margin-top:6px}
.field-row .desc{font-size:14.5px;line-height:1.8;color:var(--ink-2);padding-top:6px;max-width:42ch}
.field-row .desc .jp{display:block;font-family:var(--jp);color:var(--ink);margin-bottom:8px;font-size:14px}

.philosophy{background:var(--charcoal);color:var(--paper);padding:clamp(96px,20vh,220px) var(--pad)}
.philosophy ::selection{background:var(--paper);color:var(--charcoal)}
.philosophy .eyebrow{color:rgba(215,218,214,.55)}
.philosophy .ph-line{font-family:var(--jp);font-weight:500;font-size:clamp(26px,4.8vw,62px);line-height:1.55;letter-spacing:.05em;max-width:18ch;margin-top:clamp(34px,6vh,64px)}
.philosophy .ph-en{margin-top:clamp(30px,5vh,52px);max-width:50ch;font-size:14px;line-height:1.9;color:rgba(215,218,214,.6)}

.closing{display:flex;flex-direction:column;gap:clamp(28px,5vh,48px)}
.closing .big{font-family:var(--jp);font-size:clamp(30px,5.8vw,78px);font-weight:500;line-height:1.2;letter-spacing:.02em}
.closing .cta{display:inline-flex;align-items:center;gap:14px;align-self:flex-start;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;padding-bottom:6px;border-bottom:1px solid var(--ink);transition:gap .4s ease}
.closing .cta:hover{gap:24px}

/* ---------- generic page (inquiry, privacy, philosophy, etc) ---------- */
.page-wrap{padding:clamp(40px,9vh,96px) var(--pad) clamp(60px,10vh,120px);max-width:980px}
.page-wrap .eyebrow{display:block;margin-bottom:clamp(16px,3vh,26px)}
.page-title{font-family:var(--jp);font-weight:500;font-size:clamp(30px,5.4vw,68px);line-height:1.12;letter-spacing:.02em;margin-bottom:clamp(28px,5vh,52px)}
.page-content{font-family:var(--jp);font-size:15.5px;line-height:1.95;max-width:64ch}
.page-content h2{font-family:var(--grotesk);font-weight:600;font-size:22px;margin:2em 0 .8em}
.page-content h3{font-family:var(--grotesk);font-weight:600;font-size:18px;margin:1.8em 0 .6em}
.page-content p{margin-bottom:1.2em}
.page-content a{border-bottom:1px solid var(--line)}
.page-content ul,.page-content ol{margin:0 0 1.2em 1.4em}
.page-content li{margin-bottom:.4em}

/* ---------- WPForms restyle (keeps backend/reCAPTCHA intact) ---------- */
.wpforms-container{max-width:560px;margin-top:clamp(20px,4vh,40px)!important}
.wpforms-form .wpforms-field{padding:0 0 clamp(26px,4vh,38px) 0!important}
.wpforms-form .wpforms-field-label{font-family:var(--jp)!important;font-size:14px!important;font-weight:500!important;letter-spacing:.04em!important;color:var(--ink)!important;margin-bottom:10px!important}
.wpforms-form .wpforms-required-label{color:var(--ink)!important;font-family:var(--mono)!important;font-size:11px!important;margin-left:6px}
.wpforms-form input[type=text],
.wpforms-form input[type=email],
.wpforms-form input[type=tel],
.wpforms-form input[type=url],
.wpforms-form textarea,
.wpforms-form select{
  width:100%!important;background:transparent!important;border:0!important;border-bottom:1px solid var(--line)!important;
  border-radius:0!important;box-shadow:none!important;padding:10px 0!important;
  font-family:var(--jp)!important;font-size:16px!important;color:var(--ink)!important;transition:border-color .3s}
.wpforms-form input:focus,.wpforms-form textarea:focus,.wpforms-form select:focus{outline:none!important;border-bottom:1.5px solid var(--ink)!important}
.wpforms-form textarea{resize:vertical;min-height:128px;line-height:1.7}
.wpforms-form .wpforms-field-description{font-family:var(--mono)!important;font-size:11px!important;color:var(--ink-2)!important;letter-spacing:.03em}
.wpforms-form .wpforms-submit-container{margin-top:clamp(14px,2vh,24px)}
.wpforms-form button.wpforms-submit{
  font-family:var(--mono)!important;font-size:12px!important;letter-spacing:.18em!important;text-transform:uppercase!important;
  background:var(--charcoal)!important;color:var(--paper)!important;border:0!important;border-radius:0!important;
  padding:16px 34px!important;cursor:pointer;transition:opacity .3s}
.wpforms-form button.wpforms-submit:hover{opacity:.85}
.wpforms-form .wpforms-error{font-family:var(--mono)!important;font-size:11px!important}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:clamp(46px,8vh,80px) var(--pad) 40px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:clamp(24px,5vw,60px)}
.site-footer .brand-lg img{height:40px;width:auto}
.site-footer .tagline{font-family:var(--mono);font-size:12px;color:var(--ink-2);margin-top:16px;letter-spacing:.04em}
.site-footer .col h4{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-2);margin-bottom:16px}
.site-footer .col p,.site-footer .col a{display:block;font-size:13px;line-height:1.9;color:var(--ink)}
.site-footer .col a:hover{color:var(--ink-2)}
.site-footer .copyright{grid-column:1/-1;margin-top:clamp(40px,7vh,72px);padding-top:22px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}

/* ---------- motion (progressive enhancement) ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity 1s cubic-bezier(.16,1,.3,1),transform 1s cubic-bezier(.16,1,.3,1)}
.js .reveal.in{opacity:1;transform:none}
.js .hero-thesis .ln>span{transform:translateY(110%);animation:rise 1.05s cubic-bezier(.16,1,.3,1) forwards}
.js .hero-thesis .ln:nth-child(2)>span{animation-delay:.12s}
.js .hero-sub,.js .hero-foot{opacity:0;animation:fade 1s ease .55s forwards}
.js .horizon{transform:scaleX(0);animation:draw 1.1s cubic-bezier(.16,1,.3,1) .35s forwards}
@keyframes rise{to{transform:translateY(0)}}
@keyframes fade{to{opacity:1}}
@keyframes draw{to{transform:scaleX(1)}}

@media(max-width:820px){
  .site-nav{display:none}
  .nav-toggle{display:block}
  .field-row{grid-template-columns:1fr;gap:10px;padding:30px 0}
  .field-row .num{display:none}
  .site-footer{grid-template-columns:1fr;gap:34px}
  .site-footer .copyright{flex-direction:column;gap:10px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .js .reveal{opacity:1;transform:none;transition:none}
  .js .hero-thesis .ln>span{transform:none}
  .js .hero-sub,.js .hero-foot{opacity:1}
  .js .horizon{transform:scaleX(1)}
  html{scroll-behavior:auto}
}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}