/*
Theme Name: KRITICAL SECOND
Theme URI: https://kriticalsecond.co.jp
Author: KRITICAL SECOND Inc.
Author URI: https://kriticalsecond.co.jp
Description: Official website theme for KRITICAL SECOND Inc.
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: kritical-second
*/

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #070709;
  --bg2: #0d0d12;
  --surface: #13131a;
  --border: rgba(255,255,255,0.07);
  --text: #e8e8f0;
  --text-muted: #6b6b80;
  --accent: #c8a96e;
  --accent2: #8b6fd4;
  --white: #ffffff;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── HEADER ── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 24px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(7,7,9,0.95) 0%, transparent 100%);
  transition: backdrop-filter 0.3s, background 0.3s;
}
header.scrolled {
  background: rgba(7,7,9,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--white);
  text-decoration: none;
  text-transform: uppercase;
}
.logo span { color: var(--accent); }

nav { display: flex; gap: 36px; align-items: center; }
nav a {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
nav a:hover { color: var(--white); }

.nav-cta {
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  padding: 8px 20px;
  border-radius: 2px;
  transition: background 0.2s, color 0.2s !important;
}
.nav-cta:hover { background: var(--accent); color: var(--bg) !important; }

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 48px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 70% 40%, rgba(139,111,212,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 70%, rgba(200,169,110,0.06) 0%, transparent 60%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

.hero-content { position: relative; max-width: 900px; }

.hero-label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}

h1 {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 24px;
}
h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent) 0%, #e8d5a8 50%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 56px;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #070709;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 32px;
  text-decoration: none;
  border-radius: 2px;
  transition: opacity 0.2s, transform 0.2s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 32px;
  text-decoration: none;
  border-radius: 2px;
  transition: border-color 0.2s, color 0.2s;
}
.btn-secondary:hover { border-color: rgba(255,255,255,0.3); color: var(--white); }

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ── SECTIONS ── */
section { padding: 120px 48px; }

.section-label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

h2 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}

/* ── ABOUT ── */
#about { background: var(--bg2); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}

.about-lead {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 300;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 32px;
}

.about-body {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.9;
}

.about-right { padding-top: 60px; }

.value-card {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 28px 32px;
  margin-bottom: 16px;
  background: var(--surface);
  transition: border-color 0.3s;
}
.value-card:hover { border-color: rgba(200,169,110,0.3); }

.value-card h3 {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.value-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ── SERVICES ── */
#services { background: var(--bg); }

.services-intro {
  max-width: 640px;
  margin: 0 auto 80px;
  text-align: center;
}
.services-intro p {
  font-size: 16px;
  color: var(--text-muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  max-width: 1100px;
  margin: 0 auto;
}

.service-item {
  background: var(--bg);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.service-item:hover { background: var(--surface); }

.service-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-item:hover::before { transform: scaleX(1); }

.service-num {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: block;
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  color: var(--accent);
}

.service-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.4;
}

.service-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.85;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}
.service-tag {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(200,169,110,0.3);
  padding: 4px 10px;
  border-radius: 2px;
}

/* ── MISSION ── */
#mission {
  background: var(--bg2);
  text-align: center;
}

.mission-inner {
  max-width: 800px;
  margin: 0 auto;
}

.mission-quote {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 300;
  line-height: 1.6;
  color: var(--white);
  margin-bottom: 48px;
  letter-spacing: 0.02em;
}
.mission-quote strong {
  font-weight: 700;
  color: var(--accent);
}

.mission-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 64px;
}

.stats-row {
  display: flex;
  justify-content: center;
  gap: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.stat-item { text-align: center; }
.stat-num {
  font-size: 40px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  display: block;
}
.stat-num span { color: var(--accent); }
.stat-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 8px;
  display: block;
}

/* ── CONTACT ── */
#contact { background: var(--bg); }

.contact-inner {
  max-width: 640px;
  margin: 0 auto;
}

.contact-intro {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.contact-address {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px 24px;
  margin-bottom: 40px;
  background: var(--surface);
}
.contact-address-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}
.contact-address p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* Contact Form 7 スタイル上書き */
.wpcf7-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.wpcf7-form .form-group { margin-bottom: 24px; }
.wpcf7-form label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: normal;
}
.wpcf7-form input[type="text"],
.wpcf7-form input[type="email"],
.wpcf7-form select,
.wpcf7-form textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px 18px;
  font-family: inherit;
  font-size: 15px;
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
}
.wpcf7-form input:focus,
.wpcf7-form textarea:focus,
.wpcf7-form select:focus {
  border-color: rgba(200,169,110,0.5);
}
.wpcf7-form textarea { min-height: 140px; resize: vertical; }
.wpcf7-form select option { background: var(--surface); }
.wpcf7-form input[type="submit"] {
  width: 100%;
  background: var(--accent);
  color: #070709;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 32px;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
  margin-top: 8px;
}
.wpcf7-form input[type="submit"]:hover { opacity: 0.88; transform: translateY(-1px); }
.wpcf7-response-output {
  margin-top: 16px !important;
  border: 1px solid var(--border) !important;
  padding: 12px 16px !important;
  font-size: 14px !important;
  color: var(--text-muted) !important;
  border-radius: 2px !important;
}

/* ── FOOTER ── */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 48px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-logo {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--white);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.footer-corp {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  display: block;
}
.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── FADE-IN ── */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  header { padding: 20px 24px; }
  nav { gap: 20px; }
  .nav-cta { display: none; }
  #hero { padding: 100px 24px 80px; }
  section { padding: 80px 24px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-right { padding-top: 0; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-row { gap: 32px; flex-wrap: wrap; }
  footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .wpcf7-form .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  h1 { font-size: 40px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  nav a:not(.nav-cta) { display: none; }
}