/* ===================================
   株式会社ビズノア コーポレートサイト
   style.css - 共通スタイル
   =================================== */

/* --- CSS Variables --- */
:root {
  --color-primary: #1a2a5e;
  --color-primary-light: #2a3f7e;
  --color-primary-dark: #0f1a3e;
  --color-accent: #3b82c4;
  --color-accent-light: #5a9fd4;
  --color-white: #ffffff;
  --color-bg: #f8f9fc;
  --color-bg-alt: #eef1f7;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: #dde2ea;
  --color-wave: #c8d8f0;
  --font-main: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --font-en: "Inter", "Noto Sans JP", sans-serif;
  --max-width: 1100px;
  --header-height: 72px;
  --transition: 0.3s ease;
}

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

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

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

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

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

a:hover {
  color: var(--color-primary);
}

ul,
ol {
  list-style: none;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section--alt {
  background-color: var(--color-bg);
}

.section__title {
  text-align: center;
  margin-bottom: 48px;
}

.section__title h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section__title .en {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section__title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  margin: 16px auto 0;
  border-radius: 2px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-primary-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26, 42, 94, 0.3);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--white {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn--white:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

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

.header__logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.header__logo img {
  height: 40px;
  width: auto;
}

.header__logo-icon {
  flex-shrink: 0;
}

.header__logo-text {
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

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

.nav__link {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--active {
  color: var(--color-primary);
}

.nav__link--active::after {
  width: 100%;
}

.nav__contact {
  padding: 8px 24px;
  background-color: var(--color-primary);
  color: var(--color-white) !important;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
}

.nav__contact:hover {
  background-color: var(--color-primary-light);
  color: var(--color-white) !important;
}

.nav__contact::after {
  display: none;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  z-index: 1001;
}

.hamburger__line {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition);
  border-radius: 1px;
}

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

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

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

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, var(--color-accent) 100%);
  margin-top: var(--header-height);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--color-white);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.hero__wave {
  position: absolute;
  bottom: 60px;
  left: 0;
  width: 200%;
  height: 60px;
  opacity: 0.08;
}

.hero__wave svg {
  width: 100%;
  height: 100%;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px;
  color: var(--color-white);
}

.hero__catch {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 20px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero__sub {
  font-size: 1.1rem;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: 36px;
  max-width: 600px;
}

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

/* --- Page Hero (sub pages) --- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-accent) 100%);
  margin-top: var(--header-height);
  padding: 60px 0;
  text-align: center;
  color: var(--color-white);
  position: relative;
}

.page-hero::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 40px;
  background: var(--color-white);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-hero .en {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  opacity: 0.75;
  text-transform: uppercase;
}

/* --- Cards --- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background: var(--color-white);
  border-radius: 8px;
  padding: 36px 28px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.card__icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-white);
  font-size: 1.5rem;
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.card__text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- News List --- */
.news-list {
  max-width: 800px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-item:last-child {
  border-bottom: none;
}

.news-date {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  min-width: 100px;
}

.news-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 3px;
  background-color: var(--color-primary);
  color: var(--color-white);
  white-space: nowrap;
}

.news-tag--info {
  background-color: var(--color-accent);
}

.news-title {
  font-size: 0.95rem;
  color: var(--color-text);
}

.news-title a {
  color: var(--color-text);
}

.news-title a:hover {
  color: var(--color-primary);
}

/* --- CTA Section --- */
.cta {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  text-align: center;
  padding: 64px 0;
}

.cta h2 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.cta p {
  opacity: 0.85;
  margin-bottom: 32px;
  font-size: 0.95rem;
}

/* --- About / Company Info --- */
.company-table {
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
  border-collapse: collapse;
}

.company-table th,
.company-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 160px;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-bg);
}

/* --- Profile Section --- */
.profile {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  max-width: 800px;
  margin: 0 auto;
}

.profile__info {
  flex: 1;
}

.profile__name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.profile__title {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.profile__qualifications {
  margin-bottom: 20px;
}

.profile__qualifications li {
  font-size: 0.9rem;
  color: var(--color-text-light);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.profile__qualifications li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
  transform: translateY(-50%);
}

.profile__text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- Origin / Philosophy --- */
.origin {
  max-width: 800px;
  margin: 0 auto;
}

.origin__meaning {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.origin__item {
  background: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
}

.origin__item strong {
  display: block;
  color: var(--color-primary);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.origin__item span {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.origin__summary {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  padding: 32px;
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* --- Service --- */
.service-detail {
  display: flex;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}

.service-detail:nth-child(even) {
  flex-direction: row-reverse;
}

.service-detail__content {
  flex: 1;
}

.service-detail__icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 2rem;
  flex-shrink: 0;
}

.service-detail__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-detail__text {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.service-detail__list li {
  font-size: 0.9rem;
  color: var(--color-text-light);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.service-detail__list li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* --- Contact Form --- */
.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.contact-info__item {
  text-align: center;
  padding: 28px 20px;
  background: var(--color-bg);
  border-radius: 8px;
}

.contact-info__icon {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.contact-info__label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-info__value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.contact-info__value a {
  color: var(--color-text);
}

.contact-info__value a:hover {
  color: var(--color-primary);
}

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

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group label .required {
  font-size: 0.75rem;
  color: #d9534f;
  margin-left: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: var(--font-main);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-white);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 196, 0.1);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}

.form-submit {
  text-align: center;
  margin-top: 32px;
}

/* --- News Page --- */
.news-page-list {
  max-width: 800px;
  margin: 0 auto;
}

.news-page-item {
  padding: 24px;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition);
}

.news-page-item:hover {
  background-color: var(--color-bg);
}

.news-page-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.news-page-item__title {
  font-size: 1.05rem;
  font-weight: 600;
}

.news-page-item__title a {
  color: var(--color-text);
}

.news-page-item__title a:hover {
  color: var(--color-primary);
}

.news-page-item__excerpt {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

/* --- Footer --- */
.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: 48px 0 24px;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 32px;
}

.footer__logo {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer__logo img {
  height: 36px;
}

.footer__address {
  font-size: 0.8rem;
  opacity: 0.7;
  line-height: 1.8;
}

.footer__nav-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  opacity: 0.8;
}

.footer__nav-list li {
  margin-bottom: 8px;
}

.footer__nav-list a {
  color: var(--color-white);
  font-size: 0.8rem;
  opacity: 0.65;
  transition: opacity var(--transition);
}

.footer__nav-list a:hover {
  opacity: 1;
  color: var(--color-white);
}

.footer__bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__copyright {
  font-size: 0.75rem;
  opacity: 0.5;
}

/* --- Fade In Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-white);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    transition: right var(--transition);
    padding: 80px 32px 32px;
    z-index: 999;
  }

  .nav.is-open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .nav__link {
    display: block;
    padding: 14px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
  }

  .nav__link::after {
    display: none;
  }

  .nav__contact {
    margin-top: 16px;
    text-align: center;
    width: 100%;
    display: block;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 998;
  }

  .nav-overlay.is-open {
    display: block;
  }

  .hero {
    min-height: 480px;
  }

  .hero__catch {
    font-size: 1.6rem;
  }

  .hero__sub {
    font-size: 0.95rem;
  }

  .cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .section {
    padding: 56px 0;
  }

  .section__title h2 {
    font-size: 1.4rem;
  }

  .page-hero h1 {
    font-size: 1.5rem;
  }

  .service-detail {
    flex-direction: column !important;
    gap: 24px;
  }

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

  .profile {
    flex-direction: column;
    gap: 24px;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
    gap: 28px;
  }

  .news-item {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .hero__catch {
    font-size: 1.35rem;
  }

  .hero__buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* --- News Page Items --- */
.news-page-list {
  max-width: 800px;
  margin: 0 auto;
}

.news-page-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-page-item:first-child {
  padding-top: 0;
}

.news-page-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.news-page-item__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.news-page-item__title a {
  color: var(--color-text);
  text-decoration: none;
}

.news-page-item__title a:hover {
  color: var(--color-accent);
}

.news-page-item__excerpt {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.8;
}

.news-page-item__image {
  margin-bottom: 12px;
}

.news-page-item__image img {
  max-width: 100%;
  border-radius: 8px;
}

/* --- Section Image (for dynamically inserted images) --- */
.section-image {
  display: block;
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 20px;
}

/* --- Card Image --- */
.card__image {
  width: 100%;
  border-radius: 6px;
  margin-bottom: 12px;
}