/* =============================================
   style.css — 株式会社テクニカルサポート
   ============================================= */

/* ---- Variables ---- */
:root {
  --navy:       #0B2545;
  --navy-dark:  #071830;
  --navy-mid:   #1B4F72;
  --blue:       #38BDF8;
  --blue-mid:   #0EA5E9;
  --blue-light: #E0F2FE;
  --white:      #FFFFFF;
  --bg:         #F8FAFC;
  --bg-gray:    #F1F5F9;
  --text:       #1E293B;
  --text-mid:   #475569;
  --text-light: #94A3B8;
  --border:     #E2E8F0;

  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;

  --container: 1100px;
  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 4px 24px rgba(11,37,69,.08);
  --shadow-md: 0 8px 40px rgba(11,37,69,.14);
  --ease:      0.3s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-jp);
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---- Container ---- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---- Section spacing ---- */
.section { padding: 100px 0; }

/* ---- Fade-in (Intersection Observer) ---- */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-in.visible { opacity: 1; transform: none; }

/* stagger for grid children */
.services-grid .fade-in:nth-child(2),
.features-grid .fade-in:nth-child(2) { transition-delay: .1s; }
.services-grid .fade-in:nth-child(3),
.features-grid .fade-in:nth-child(3) { transition-delay: .2s; }
.services-grid .fade-in:nth-child(4),
.features-grid .fade-in:nth-child(4) { transition-delay: .3s; }

/* ---- Section header ---- */
.section-header { text-align: center; margin-bottom: 64px; }
.sec-en {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--blue-mid);
  margin-bottom: 8px;
}
.sec-title {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 900;
  color: var(--navy);
  letter-spacing: -.02em;
  margin-bottom: 14px;
}
.sec-desc {
  font-size: 15px;
  color: var(--text-mid);
  max-width: 480px;
  margin: 0 auto;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-jp);
  cursor: pointer;
  transition: var(--ease);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue-mid);
  color: var(--white);
  border-color: var(--blue-mid);
}
.btn-primary:hover {
  background: var(--navy);
  border-color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14,165,233,.35);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: var(--white);
}
.btn-full { width: 100%; justify-content: center; }


/* ==============================================
   HEADER
   ============================================== */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 200;
  background: transparent;
  transition: background .35s, box-shadow .35s;
}
.header.scrolled {
  background: var(--navy-dark);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 44px; height: 44px;
  background: var(--blue-mid);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-en);
  font-weight: 900; font-size: 15px;
  letter-spacing: .06em;
  flex-shrink: 0;
}
.logo-mark.sm { width: 38px; height: 38px; font-size: 13px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-company { font-size: 15px; font-weight: 700; color: #fff; }
.logo-corp    { font-size: 11px; color: rgba(255,255,255,.55); }

/* Desktop nav */
.nav ul { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: rgba(255,255,255,.82);
  font-size: 14px; font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--ease);
}
.nav a:hover { color: #fff; background: rgba(255,255,255,.1); }
.nav-cta {
  background: var(--blue-mid) !important;
  color: #fff !important;
  border-radius: 50px !important;
  padding: 8px 22px !important;
}
.nav-cta:hover { background: var(--blue) !important; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: #fff; border-radius: 2px; transition: var(--ease);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--navy-dark);
  z-index: 199;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.mobile-overlay.open { display: flex; }
.mobile-close {
  position: absolute; top: 20px; right: 24px;
  background: none; border: none;
  color: rgba(255,255,255,.6); font-size: 24px; cursor: pointer;
}
.mobile-overlay nav ul {
  display: flex; flex-direction: column; gap: 8px; text-align: center;
}
.mob-link {
  display: block;
  font-size: 22px; font-weight: 700; color: #fff;
  padding: 12px 48px;
  border-radius: var(--radius);
  transition: var(--ease);
}
.mob-link:hover { background: rgba(255,255,255,.08); color: var(--blue); }


/* ==============================================
   HERO
   ============================================== */
.hero {
  min-height: 100vh;
  background-color: var(--navy-dark);
  background-image:
    radial-gradient(circle at 15% 55%, rgba(56,189,248,.18) 0%, transparent 52%),
    radial-gradient(circle at 88% 20%, rgba(14,165,233,.13) 0%, transparent 45%),
    radial-gradient(circle at 50% 95%, rgba(27,79,114,.45) 0%, transparent 50%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 80px 0 60px;
}

/* dot grid（写真の上に重ねる） */
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(56,189,248,.06) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
  z-index: 2;
}

/* 4分割フォトグリッド */
.hero-photos {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  z-index: 0;
}
.hp {
  overflow: hidden;
  position: relative;
}
.hp::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(7, 24, 48, 0.72);
}
.hp img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) brightness(0.85);
  transition: transform 8s ease;
}
.hp:hover img {
  transform: scale(1.04);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 56px;
  align-items: center;
  position: relative; z-index: 3;
}

/* Hero left */
.hero-badge {
  display: inline-block;
  background: rgba(56,189,248,.14);
  border: 1px solid rgba(56,189,248,.35);
  color: var(--blue);
  font-size: 13px; font-weight: 700; letter-spacing: .08em;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 28px;
  animation: fadeUp .8s ease both .2s;
}
.hero-title {
  font-size: clamp(36px, 5.5vw, 60px);
  font-weight: 900;
  color: #fff;
  line-height: 1.22;
  letter-spacing: -.025em;
  margin-bottom: 24px;
  animation: fadeUp .8s ease both .4s;
}
.hero-sub {
  font-size: 16px;
  color: rgba(255,255,255,.68);
  line-height: 1.85;
  margin-bottom: 40px;
  animation: fadeUp .8s ease both .6s;
}
.hero-actions {
  display: flex; gap: 16px; flex-wrap: wrap;
  animation: fadeUp .8s ease both .8s;
}

/* Hero right — stat cards */
.hero-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  width: 320px;
  animation: fadeIn .9s ease both .7s;
}
.stat-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: var(--ease);
}
.stat-card:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(56,189,248,.35);
}
.stat-card.accent {
  grid-column: 1 / -1;
  background: rgba(14,165,233,.15);
  border-color: rgba(56,189,248,.4);
}
.stat-num {
  font-family: var(--font-en);
  font-size: 40px; font-weight: 900;
  color: #fff; line-height: 1;
  margin-bottom: 8px;
}
.stat-num span { font-size: 18px; color: var(--blue); margin-left: 2px; }
.stat-label { font-size: 12px; color: rgba(255,255,255,.5); font-weight: 500; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,.35);
  font-family: var(--font-en); font-size: 9px; letter-spacing: .22em;
  animation: fadeIn 1s ease both 1.2s;
  z-index: 3;
}
.scroll-line {
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, rgba(255,255,255,.4), transparent);
  animation: scrollPulse 1.8s ease infinite;
}
@keyframes scrollPulse {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: none; }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}


/* ==============================================
   SERVICES
   ============================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 26px;
  position: relative; overflow: hidden;
  transition: var(--ease);
}
.service-card::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue-mid), var(--blue));
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s ease;
}
.service-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}
.service-card:hover::after { transform: scaleX(1); }

.svc-icon {
  width: 62px; height: 62px;
  background: var(--blue-light);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-mid);
  margin-bottom: 20px;
}
.service-card h3 {
  font-size: 16px; font-weight: 700;
  color: var(--navy); margin-bottom: 10px;
}
.service-card p { font-size: 14px; color: var(--text-mid); line-height: 1.7; }


/* ==============================================
   FEATURES
   ============================================== */
.features-section { background: var(--navy); }
.features-section .sec-en    { color: var(--blue); }
.features-section .sec-title { color: #fff; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.feature-item { text-align: center; }
.feat-num {
  font-family: var(--font-en);
  font-size: 52px; font-weight: 900;
  color: rgba(56,189,248,.25);
  line-height: 1; margin-bottom: 16px;
}
.feature-item h3 {
  font-size: 17px; font-weight: 700;
  color: #fff; margin-bottom: 12px;
}
.feature-item p { font-size: 14px; color: rgba(255,255,255,.58); line-height: 1.75; }


/* ==============================================
   ABOUT
   ============================================== */
.about-wrap {
  max-width: 740px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-table { width: 100%; border-collapse: collapse; }
.about-table tr { border-bottom: 1px solid var(--border); }
.about-table tr:last-child { border-bottom: none; }
.about-table th {
  width: 150px;
  padding: 18px 24px;
  text-align: left;
  font-size: 13px; font-weight: 700;
  color: var(--navy);
  background: var(--bg-gray);
  vertical-align: top;
  white-space: nowrap;
}
.about-table td {
  padding: 18px 24px;
  font-size: 15px;
  color: var(--text-mid);
  vertical-align: top;
}
.about-table td a { color: var(--blue-mid); font-weight: 600; }
.about-table td a:hover { text-decoration: underline; }


/* ==============================================
   RECRUIT
   ============================================== */
.recruit-section { background: var(--bg-gray); }

.recruit-card {
  max-width: 820px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius);
  padding: 52px;
  box-shadow: var(--shadow-md);
  position: relative; overflow: hidden;
}
.recruit-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--navy), var(--blue-mid));
}
.recruit-badge {
  display: inline-block;
  background: var(--blue-light);
  color: var(--blue-mid);
  font-size: 11px; font-weight: 700; letter-spacing: .12em;
  padding: 4px 14px;
  border-radius: 50px; margin-bottom: 16px;
}
.recruit-job {
  font-size: 28px; font-weight: 900;
  color: var(--navy); margin-bottom: 8px;
}
.recruit-catch {
  font-size: 15px; color: var(--text-mid); margin-bottom: 36px;
}

.recruit-table {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 32px;
}
.rt-row {
  display: flex;
  align-items: flex-start;
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  gap: 16px;
}
.rt-row:last-child { border-bottom: none; }
.rt-label {
  font-size: 13px; font-weight: 700;
  color: var(--navy); width: 56px; flex-shrink: 0; padding-top: 2px;
}
.rt-val { font-size: 14px; color: var(--text-mid); }
.rt-val strong { color: var(--navy); font-weight: 700; }

.recruit-points {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; margin-bottom: 36px;
}
.recruit-points li {
  font-size: 14px; font-weight: 600;
  color: var(--navy);
  display: flex; align-items: center; gap: 8px;
}
.recruit-points li::before {
  content: '✓';
  color: var(--blue-mid); font-weight: 900;
}
.recruit-btn { font-size: 16px; padding: 16px 44px; }


/* ==============================================
   CONTACT
   ============================================== */
.contact-section { background: var(--navy-dark); }
.contact-section .sec-en    { color: var(--blue); }
.contact-section .sec-title { color: #fff; }
.contact-section .sec-desc  { color: rgba(255,255,255,.55); }

.contact-wrap { max-width: 720px; margin: 0 auto; }

.contact-tel {
  display: flex; align-items: center; gap: 18px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 40px;
  color: #fff;
}
.tel-label { font-size: 12px; color: rgba(255,255,255,.45); margin-bottom: 4px; }
.tel-num {
  font-family: var(--font-en);
  font-size: 30px; font-weight: 700;
  color: #fff; letter-spacing: .04em;
}
.tel-num:hover { color: var(--blue); }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }

.form-group label {
  font-size: 13px; font-weight: 600;
  color: rgba(255,255,255,.7);
  display: flex; align-items: center; gap: 8px;
}
.req {
  background: var(--blue-mid); color: #fff;
  font-size: 10px; padding: 2px 7px; border-radius: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: 15px; font-family: var(--font-jp);
  color: #fff;
  transition: border-color .2s;
  outline: none; width: 100%;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,.28); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  background: rgba(255,255,255,.11);
}
.form-group select option { background: var(--navy-dark); color: #fff; }


/* ==============================================
   FOOTER
   ============================================== */
.footer {
  background: #040E1C;
  padding: 52px 0 28px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.footer-logo { display: flex; align-items: flex-start; gap: 14px; }
.f-company { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.f-addr, .f-tel { font-size: 13px; color: rgba(255,255,255,.38); }
.f-tel a { color: rgba(255,255,255,.38); }
.f-tel a:hover { color: var(--blue); }

.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-nav a { font-size: 13px; color: rgba(255,255,255,.38); transition: color .2s; }
.footer-nav a:hover { color: var(--blue); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding-top: 24px; text-align: center;
}
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,.22); }


/* ==============================================
   RESPONSIVE
   ============================================== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .hero-visual { width: 280px; }
}

@media (max-width: 900px) {
  .features-grid { grid-template-columns: 1fr 1fr; }
  .hero-container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav { display: none; }
  .hamburger { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .recruit-card { padding: 32px 24px; }
  .recruit-points { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-nav { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 34px; }
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
}