/* ============================================
   WoOLTRAKEY コーポレートサイト - スタイルシート
   ============================================ */

/* --- デザイントークン --- */
:root {
  --color-navy: #0A192F;
  --color-navy-light: #112240;
  --color-navy-dark: #060F1F;
  --color-silver: #F3F4F6;
  --color-silver-dark: #E5E7EB;
  --color-accent: #00B4D8;
  --color-accent-dark: #0096B7;
  --color-accent-glow: rgba(0, 180, 216, 0.3);
  --color-white: #FFFFFF;
  --color-text: #1F2937;
  --color-text-light: #9CA3AF;
  --color-text-on-dark: #CCD6F6;
  --color-heading-on-dark: #E6F1FF;

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

  --header-height: 80px;
  --section-padding: 100px 0;
  --container-width: 1200px;
  --border-radius: 12px;

  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- リセットとベース --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nowrap {
  white-space: nowrap;
}

/* --- タイポグラフィ --- */
.section-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
}

.section-title--light {
  color: var(--color-heading-on-dark);
}

.section-desc {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text);
  max-width: 720px;
}

.section-desc--light {
  color: var(--color-text-on-dark);
}

/* ============================================
   ヘッダー
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.header__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 2px;
}

.header__logo span {
  color: var(--color-accent);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__nav a {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-on-dark);
  letter-spacing: 1px;
  position: relative;
  padding: 4px 0;
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.header__nav a:hover::after {
  width: 100%;
}

.header__nav a:hover {
  color: var(--color-white);
}

/* ハンバーガーメニュー */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--color-white);
  transition: var(--transition-base);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ============================================
   ヒーローセクション
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-navy-dark);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(135deg,
      rgba(10, 25, 47, 0.88) 0%,
      rgba(10, 25, 47, 0.7) 50%,
      rgba(10, 25, 47, 0.55) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  padding-top: var(--header-height);
}

.hero__catch {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.4;
  margin-bottom: 24px;
  max-width: 800px;
}

.hero__catch .accent {
  color: var(--color-accent);
}

.hero__sub {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--color-text-on-dark);
  line-height: 1.9;
  max-width: 600px;
  margin-bottom: 40px;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 16px 36px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

.hero__cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-accent-glow);
}

.hero__particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.hero__particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(0, 180, 216, 0.4);
  border-radius: 50%;
  animation: float-particle 8s ease-in-out infinite;
}

.hero__particles span:nth-child(1) {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.hero__particles span:nth-child(2) {
  top: 60%;
  left: 80%;
  animation-delay: 2s;
}

.hero__particles span:nth-child(3) {
  top: 40%;
  left: 50%;
  animation-delay: 4s;
}

.hero__particles span:nth-child(4) {
  top: 80%;
  left: 30%;
  animation-delay: 1s;
}

.hero__particles span:nth-child(5) {
  top: 10%;
  left: 70%;
  animation-delay: 3s;
}

.hero__particles span:nth-child(6) {
  top: 70%;
  left: 60%;
  animation-delay: 5s;
}

@keyframes float-particle {

  0%,
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.4;
  }

  50% {
    transform: translateY(-30px) scale(1.5);
    opacity: 0.8;
  }
}

/* ヒーロー下部スクロールインジケーター */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-on-dark);
  font-size: 0.75rem;
  letter-spacing: 2px;
  opacity: 0.7;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }

  50% {
    transform: scaleY(1);
    transform-origin: top;
  }

  50.1% {
    transform-origin: bottom;
  }

  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ============================================
   About Usセクション
   ============================================ */
.about {
  padding: var(--section-padding);
  background: var(--color-navy);
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.about .section-desc--light {
  max-width: 800px;
}

.about__decoration {
  display: flex;
  gap: 16px;
  margin-top: 32px;
}

.about__stat {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  padding: 24px 32px;
  backdrop-filter: blur(8px);
}

.about__stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  display: block;
}

.about__stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* ============================================
   Expertiseセクション
   ============================================ */
.expertise {
  padding: var(--section-padding);
  background: var(--color-silver);
}

.expertise__header {
  text-align: center;
  margin-bottom: 64px;
}

.expertise__header .section-desc {
  margin: 0 auto;
}

.expertise__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.expertise__card {
  background: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.expertise__card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.expertise__card-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.expertise__card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.expertise__card:hover .expertise__card-img img {
  transform: scale(1.05);
}

.expertise__card-img--gradient {
  height: 220px;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.expertise__card-img--gradient i {
  font-size: 4rem;
  color: var(--color-accent);
  opacity: 0.6;
}

.expertise__card-body {
  padding: 32px;
}

.expertise__card-number {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 2px;
  margin-bottom: 8px;
  display: block;
}

.expertise__card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
  line-height: 1.4;
}

.expertise__card-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-weight: 500;
}

.expertise__card-text {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.9;
}

.expertise__card-text a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.expertise__card-text a:hover {
  color: var(--color-accent-dark);
}

/* ============================================
   Business Domainsセクション
   ============================================ */
.domains {
  padding: var(--section-padding);
  background: var(--color-navy);
  position: relative;
  overflow: hidden;
}

.domains::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.domains__header {
  text-align: center;
  margin-bottom: 64px;
}

.domains__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.domains__card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  padding: 40px 28px;
  text-align: center;
  transition: var(--transition-base);
  backdrop-filter: blur(4px);
  position: relative;
  overflow: hidden;
}

.domains__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.domains__card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 180, 216, 0.3);
  transform: translateY(-4px);
}

.domains__card:hover::before {
  opacity: 1;
}

.domains__card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: rgba(0, 180, 216, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: var(--transition-base);
}

.domains__card:hover .domains__card-icon {
  background: rgba(0, 180, 216, 0.2);
  transform: scale(1.1);
}

.domains__card-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-heading-on-dark);
  line-height: 1.6;
}

/* ============================================
   Company Profileセクション
   ============================================ */
.company {
  padding: var(--section-padding);
  background: var(--color-silver);
}

.company__header {
  text-align: center;
  margin-bottom: 64px;
}

.company__table-wrap {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.company__table {
  width: 100%;
  border-collapse: collapse;
}

.company__table tr {
  border-bottom: 1px solid var(--color-silver-dark);
}

.company__table tr:last-child {
  border-bottom: none;
}

.company__table th,
.company__table td {
  padding: 20px 32px;
  text-align: left;
  font-size: 0.95rem;
  vertical-align: top;
}

.company__table th {
  width: 200px;
  font-weight: 600;
  color: var(--color-navy);
  background: rgba(10, 25, 47, 0.03);
  white-space: nowrap;
}

.company__table td {
  color: var(--color-text);
}

/* ============================================
   Contactセクション
   ============================================ */
.contact {
  padding: var(--section-padding);
  background: var(--color-navy-dark);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.contact__inner {
  position: relative;
  z-index: 1;
}

.contact__text {
  font-size: 1rem;
  color: var(--color-text-on-dark);
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.contact__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 16px 40px;
  border-radius: 50px;
  border: 2px solid var(--color-accent);
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
}

.contact__btn:hover {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 15px var(--color-accent-glow);
  transform: translateY(-2px);
}

/* ============================================
   フッター
   ============================================ */
.footer {
  padding: 48px 0 32px;
  background: var(--color-navy-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 2px;
}

.footer__logo span {
  color: var(--color-accent);
}

.footer__links {
  display: flex;
  gap: 28px;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: color var(--transition-base);
}

.footer__links a:hover {
  color: var(--color-accent);
}

.footer__copy {
  width: 100%;
  text-align: center;
  padding-top: 32px;
  margin-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ============================================
   法務ページ共通
   ============================================ */
.legal {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  background: var(--color-silver);
  min-height: 100vh;
}

.legal__inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

.legal__title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
  padding-bottom: 20px;
  border-bottom: 3px solid var(--color-accent);
}

.legal__updated {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.legal__content h2 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--color-accent);
}

.legal__content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-top: 24px;
  margin-bottom: 12px;
}

.legal__content p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 2;
  margin-bottom: 16px;
}

.legal__content ul,
.legal__content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal__content ul {
  list-style: disc;
}

.legal__content ol {
  list-style: decimal;
}

.legal__content li {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 2;
  margin-bottom: 4px;
}

.legal__table-wrap {
  overflow-x: auto;
  margin-bottom: 24px;
}

.legal__table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.legal__table th,
.legal__table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--color-silver-dark);
  vertical-align: top;
}

.legal__table th {
  width: 200px;
  font-weight: 600;
  color: var(--color-navy);
  background: rgba(10, 25, 47, 0.03);
  white-space: nowrap;
}

.legal__table td {
  color: var(--color-text);
}

/* ============================================
   スクロールアニメーション
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
   レスポンシブ
   ============================================ */
@media (max-width: 1024px) {
  .expertise__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .expertise__card {
    display: grid;
    grid-template-columns: 280px 1fr;
  }

  .expertise__card-img,
  .expertise__card-img--gradient {
    height: 100%;
    min-height: 220px;
  }

  .domains__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 72px 0;
    --header-height: 64px;
  }

  .hamburger {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-navy);
    flex-direction: column;
    justify-content: center;
    gap: 0;
    padding: 40px;
    transition: right var(--transition-base);
    box-shadow: -8px 0 30px rgba(0, 0, 0, 0.3);
  }

  .header__nav.active {
    right: 0;
  }

  .header__nav a {
    font-size: 1rem;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    width: 100%;
  }

  .hero__catch {
    font-size: clamp(1.5rem, 6vw, 2.2rem);
  }

  .hero__sub {
    font-size: 0.9rem;
  }

  .about__decoration {
    flex-direction: column;
  }

  .expertise__card {
    grid-template-columns: 1fr;
  }

  .expertise__card-img,
  .expertise__card-img--gradient {
    height: 200px;
  }

  .domains__grid {
    grid-template-columns: 1fr;
  }

  .company__table th,
  .company__table td {
    padding: 16px 20px;
    font-size: 0.88rem;
    display: block;
    width: 100%;
  }

  .company__table th {
    padding-bottom: 4px;
    background: transparent;
    border-bottom: none;
  }

  .company__table td {
    padding-top: 0;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__links {
    flex-direction: column;
    gap: 12px;
  }

  .legal__content h2 {
    font-size: 1.1rem;
  }

  .legal__table th,
  .legal__table td {
    padding: 12px 16px;
    font-size: 0.85rem;
    display: block;
    width: 100%;
  }

  .legal__table th {
    padding-bottom: 4px;
    border-bottom: none;
  }

  .legal__table td {
    padding-top: 0;
  }
}

/* モバイルナビオーバーレイ */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}