/* =============================================
   株式会社エムザト — Corporate Website
   Primary: #027c7e
   ============================================= */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-primary:     #027c7e;
  --clr-primary-dk:  #015b5d;
  --clr-primary-lt:  #03a3a6;
  --clr-primary-bg:  #e8f5f5;
  --clr-dark:        #0f172a;
  --clr-dark2:       #1e293b;
  --clr-text:        #374151;
  --clr-text-lt:     #6b7280;
  --clr-white:       #ffffff;
  --clr-gray-50:     #f8fafc;
  --clr-gray-100:    #f1f5f9;
  --clr-gray-200:    #e2e8f0;
  --clr-gray-400:    #94a3b8;

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

  --max-w: 1160px;
  --sec-py: clamp(80px, 10vw, 120px);
  --radius: 16px;
  --radius-sm: 10px;

  --shadow:    0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- UTILITIES ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}

.section { padding: var(--sec-py) 0; }
.section-white   { background: var(--clr-white); }
.section-teal-bg { background: var(--clr-primary-bg); }
.section-dark    { background: var(--clr-dark); }
.section-contact { background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dk) 100%); }

/* Fade-up animation */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--delay, 0s);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--font-sans);
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .03em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}
.btn-primary:hover {
  background: var(--clr-primary-dk);
  border-color: var(--clr-primary-dk);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(2,124,126,.35);
}
.btn-outline-light {
  background: transparent;
  color: var(--clr-white);
  border-color: rgba(255,255,255,.6);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,.12);
  border-color: var(--clr-white);
}
.btn-submit {
  background: var(--clr-white);
  color: var(--clr-primary);
  border-color: var(--clr-white);
  font-size: 1rem;
  padding: 16px 48px;
}
.btn-submit:hover {
  background: var(--clr-primary-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}

/* ---------- SECTION HEADER ---------- */
.section-header {
  text-align: center;
  margin-bottom: clamp(48px, 7vw, 72px);
}
.section-label {
  display: inline-block;
  font-family: var(--font-num);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--clr-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  position: relative;
  padding: 0 20px;
}
.section-label::before,
.section-label::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--clr-primary);
  opacity: .6;
}
.section-label::before { right: 0; }
.section-label::after  { left:  0; }

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 900;
  color: var(--clr-dark);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -.01em;
}
.section-desc {
  font-size: clamp(.9rem, 1.5vw, 1.05rem);
  color: var(--clr-text-lt);
  line-height: 1.9;
}

/* ---------- HEADER ---------- */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,.07);
  transition: box-shadow .3s;
}
#header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,.1);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
}
.logo img { height: 40px; width: auto; }
.logo-text {
  display: none;
  font-family: var(--font-num);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -.02em;
}

.global-nav ul {
  display: flex;
  align-items: center;
  gap: 36px;
}
.global-nav a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text);
  transition: color .2s;
}
.global-nav a:hover { color: var(--clr-primary); }

.nav-cta {
  background: var(--clr-primary) !important;
  color: var(--clr-white) !important;
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 700 !important;
  transition: background .2s, transform .2s !important;
}
.nav-cta:hover {
  background: var(--clr-primary-dk) !important;
  transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-dark);
  border-radius: 2px;
  transition: var(--transition);
}
.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 nav */
.mobile-nav {
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: var(--clr-white);
  padding: 24px 32px;
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
  transform: translateY(-110%);
  transition: transform .35s ease;
  z-index: 99;
}
.mobile-nav.open { transform: translateY(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-dark);
  border-bottom: 1px solid var(--clr-gray-200);
}
.mobile-nav a:hover { color: var(--clr-primary); }

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #062f30 0%, #094748 40%, #027c7e 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

/* Background circles */
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.hero-circle.c1 { width: 600px; height: 600px; top: -200px; right: -150px; }
.hero-circle.c2 { width: 400px; height: 400px; bottom: -100px; left: -80px; background: rgba(255,255,255,.03); }
.hero-circle.c3 {
  width: 200px; height: 200px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(3,163,166,.15);
  filter: blur(60px);
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-num);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: rgba(255,255,255,.65);
  text-transform: uppercase;
  margin-bottom: 28px;
}
.hero-eyebrow .sep { opacity: .4; font-size: .7rem; }

.hero-title {
  font-size: clamp(2.4rem, 6.5vw, 5rem);
  font-weight: 900;
  color: var(--clr-white);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 28px;
}
.hero-title em {
  font-style: normal;
  color: #4dd8da;
  position: relative;
}
.hero-title em::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #4dd8da, rgba(77,216,218,0));
  border-radius: 2px;
}

.hero-desc {
  font-size: clamp(.9rem, 1.6vw, 1.1rem);
  color: rgba(255,255,255,.7);
  line-height: 1.9;
  margin-bottom: 44px;
}

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

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: var(--font-num);
  font-size: .7rem;
  letter-spacing: .15em;
  color: rgba(255,255,255,.4);
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.4), transparent);
  animation: scrollDown 1.8s ease infinite;
}
@keyframes scrollDown {
  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; }
}

/* ---------- SERVICES ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  border-radius: var(--radius);
  padding: clamp(28px, 4vw, 44px);
  position: relative;
  transition: box-shadow .3s, transform .3s;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-lt));
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.service-num {
  font-family: var(--font-num);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--clr-primary-bg);
  line-height: 1;
  position: absolute;
  top: 20px; right: 28px;
  letter-spacing: -.04em;
}
.service-icon {
  width: 52px;
  height: 52px;
  color: var(--clr-primary);
  margin-bottom: 20px;
}
.service-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--clr-dark);
  margin-bottom: 14px;
  line-height: 1.4;
}
.service-desc {
  font-size: .93rem;
  color: var(--clr-text-lt);
  line-height: 1.8;
  margin-bottom: 24px;
}
.service-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.service-list li {
  font-size: .88rem;
  color: var(--clr-text);
  padding-left: 20px;
  position: relative;
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 10px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--clr-primary);
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.service-tags span {
  font-family: var(--font-num);
  font-size: .75rem;
  font-weight: 600;
  background: var(--clr-primary-bg);
  color: var(--clr-primary);
  padding: 5px 14px;
  border-radius: 50px;
  letter-spacing: .02em;
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: .88rem;
  font-weight: 700;
  color: var(--clr-primary);
  text-decoration: none;
  border-bottom: 1.5px solid transparent;
  transition: border-color .2s, gap .2s;
}
.service-link:hover {
  border-bottom-color: var(--clr-primary);
  gap: 10px;
}

/* ---------- STRENGTHS ---------- */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.strength-card {
  background: var(--clr-white);
  border-radius: var(--radius);
  padding: clamp(28px, 4vw, 40px);
  box-shadow: var(--shadow);
  transition: box-shadow .3s, transform .3s;
}
.strength-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.strength-num {
  font-family: var(--font-num);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1;
  margin-bottom: 18px;
  opacity: .9;
}
.strength-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--clr-dark);
  margin-bottom: 12px;
}
.strength-card p {
  font-size: .9rem;
  color: var(--clr-text-lt);
  line-height: 1.85;
}

/* ---------- PARTNER ---------- */
.partner-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 60px;
  align-items: center;
}
.partner-text .section-label { margin-bottom: 12px; display: inline-block; }
.partner-text .section-title { text-align: left; margin-bottom: 20px; }
.partner-text > p {
  font-size: 1rem;
  color: var(--clr-text-lt);
  line-height: 1.85;
  margin-bottom: 28px;
}
.check-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
}
.check-list li {
  font-size: .93rem;
  color: var(--clr-text);
  padding-left: 28px;
  position: relative;
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 16px; height: 10px;
  border-left: 2.5px solid var(--clr-primary);
  border-bottom: 2.5px solid var(--clr-primary);
  transform: rotate(-45deg);
}

.partner-visual {
  display: flex;
  justify-content: center;
}
.partner-card {
  background: var(--clr-primary-bg);
  border-radius: var(--radius);
  padding: 48px 36px;
  text-align: center;
  width: 100%;
}
.partner-icon {
  width: 72px;
  height: 72px;
  color: var(--clr-primary);
  margin: 0 auto 20px;
}
.partner-card p {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-dark);
  line-height: 1.7;
}

/* ---------- RECRUIT ---------- */
.recruit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.recruit-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: clamp(24px, 3.5vw, 36px);
  transition: background .3s, transform .3s;
}
.recruit-card:hover {
  background: rgba(255,255,255,.1);
  transform: translateY(-4px);
}
.recruit-icon {
  width: 44px;
  height: 44px;
  color: var(--clr-primary-lt);
  margin-bottom: 18px;
}
.recruit-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--clr-white);
  margin-bottom: 12px;
}
.recruit-card p {
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  line-height: 1.85;
}
.recruit-cta { text-align: center; }

/* ---------- COMPANY TABLE ---------- */
.company-table-wrap {
  max-width: 760px;
  margin: 0 auto;
}
.company-table {
  width: 100%;
  border-collapse: collapse;
}
.company-table th,
.company-table td {
  padding: 20px 24px;
  font-size: .95rem;
  text-align: left;
  border-bottom: 1px solid var(--clr-gray-200);
  vertical-align: top;
}
.company-table th {
  width: 200px;
  font-weight: 700;
  color: var(--clr-dark);
  background: var(--clr-gray-50);
}
.company-table td { color: var(--clr-text); }
.company-table tr:first-child th,
.company-table tr:first-child td {
  border-top: 2px solid var(--clr-primary);
}

/* ---------- CONTACT FORM ---------- */
.contact-form {
  max-width: 720px;
  margin: 0 auto;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form-group label {
  font-size: .85rem;
  font-weight: 700;
  color: rgba(255,255,255,.85);
  letter-spacing: .02em;
}
.required {
  color: #ff6b6b;
  margin-left: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid rgba(255,255,255,.2);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.1);
  color: var(--clr-white);
  font-family: var(--font-sans);
  font-size: .93rem;
  line-height: 1.5;
  transition: border-color .2s, background .2s;
  outline: none;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,.35); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(255,255,255,.7);
  background: rgba(255,255,255,.15);
}
.form-group select option { background: var(--clr-primary-dk); color: var(--clr-white); }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-submit { text-align: center; margin-top: 8px; }
.form-feedback {
  text-align: center;
  margin-top: 20px;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
}
.form-feedback.success { background: rgba(77,216,218,.2); color: #4dd8da; }
.form-feedback.error   { background: rgba(255,107,107,.2); color: #ff9999; }

/* ---------- FOOTER ---------- */
#footer {
  background: var(--clr-dark);
  padding: 60px 0 32px;
}
#footer .logo img {
  filter: brightness(0) invert(1);
  opacity: 0.85;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 36px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-text { color: var(--clr-white); display: block; }
.footer-tagline {
  font-size: .82rem;
  color: var(--clr-gray-400);
  margin-top: 8px;
}
.footer-nav ul {
  display: flex;
  gap: 32px;
}
.footer-nav a {
  font-size: .88rem;
  color: var(--clr-gray-400);
  transition: color .2s;
}
.footer-nav a:hover { color: var(--clr-white); }
.footer-bottom { text-align: center; }
.copyright {
  font-family: var(--font-num);
  font-size: .78rem;
  color: rgba(255,255,255,.3);
  letter-spacing: .04em;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .partner-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .partner-visual { display: none; }
  .partner-text .section-title { text-align: left; }
}

@media (max-width: 768px) {
  .global-nav { display: none; }
  .hamburger { display: flex; }

  .services-grid    { grid-template-columns: 1fr; }
  .strengths-grid   { grid-template-columns: 1fr; gap: 16px; }
  .recruit-grid     { grid-template-columns: 1fr; gap: 16px; }

  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-inner { flex-direction: column; gap: 28px; text-align: center; }
  .footer-nav ul { flex-wrap: wrap; justify-content: center; gap: 20px; }

  .hero-title { font-size: clamp(2rem, 10vw, 3rem); }

  .section-title { font-size: clamp(1.5rem, 6vw, 2rem); }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
}

@media (max-width: 600px) {
  .company-table,
  .company-table tbody,
  .company-table tr,
  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }
  .company-table tr { border-bottom: 1px solid var(--clr-gray-200); }
  .company-table th {
    padding: 12px 16px 4px;
    border-bottom: none;
    font-size: .78rem;
    color: var(--clr-primary);
    background: var(--clr-gray-50);
    width: auto;
  }
  .company-table td {
    padding: 4px 16px 14px;
    border: none;
    font-size: .9rem;
  }
  .company-table tr:first-child th { border-top: 2px solid var(--clr-primary); }
  .company-table tr:first-child td { border-top: none; }
}