/* ============================================
   ARINOS GROUP - Corporate Website Stylesheet
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --color-primary: #f7b52c;
  --color-primary-hover: #e5a520;
  --color-primary-light: rgba(247, 181, 44, 0.1);
  --color-text-heading: #000000;
  --color-text-body: #333333;
  --color-text-muted: #4B5563;
  --color-text-light: #6B7280;
  --color-bg-white: #ffffff;
  --color-bg-alt: #F9FAFB;
  --color-why-card-num: #e4e4e4c2;
  --color-bg-dark: #111827;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --line-height: 1.6;
  --line-height-heading: 1.2;

  /* Spacing */
  --section-padding: 80px 0;
  --section-padding-mobile: 48px 0;
  --container-max: 1200px;
  --container-padding: 0 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-card-hover: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-header: 0 1px 3px rgba(0, 0, 0, 0.08);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;

  /* Header height (for offset) */
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: var(--line-height);
  color: var(--color-text-body);
  background-color: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Japanese page override */
[lang="ja"] body,
[lang="ja"] {
  font-family: var(--font-jp), var(--font-body);
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-heading);
  line-height: var(--line-height-heading);
  font-weight: 600;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text-body);
}

p:last-child {
  margin-bottom: 0;
}

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

.section {
  padding: var(--section-padding);
}

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

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

.section__header h2 {
  margin-bottom: 16px;
  position: relative;
}

.section__header p {
  max-width: 640px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.section__label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

/* ---------- Header ---------- */
#site-header {
  min-height: var(--header-height);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-bg-white);
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.header--scrolled {
  box-shadow: var(--shadow-header);
  border-bottom-color: var(--color-border-light);
}

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

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

.header__logo img {
  width: 120px;
  height: 32px;
  object-fit: cover;
  border-radius: 4px;
}

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

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

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

.header__nav a:hover,
.header__nav a.active {
  color: var(--color-text-heading);
}

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

.header__nav a.active {
  font-weight: 600;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-heading);
  transition: var(--transition);
  border-radius: 2px;
}

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

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

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

/* Mobile Nav */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -280px;
  width: 280px;
  height: 100%;
  background: var(--color-bg-white);
  z-index: 1000;
  padding: 80px 24px 24px;
  transition: right 0.3s ease;
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav__close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-body);
  transition: var(--transition-fast);
  cursor: pointer;
  background: none;
  border: none;
}

.mobile-nav__close:hover {
  background: var(--color-bg-alt);
  color: var(--color-text-heading);
}

.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-body);
  border-bottom: 1px solid var(--color-border-light);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-primary);
}

.mobile-nav a.active {
  font-weight: 600;
}

/* ---------- Footer ---------- */
#site-footer {
  min-height: 200px;
}

.footer {
  background-color: var(--color-bg-dark);
  color: #9CA3AF;
  padding: 60px 0 0;
}

.footer__grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
}

.footer__heading {
  color: var(--color-bg-white);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  font-family: var(--font-heading);
}

.footer__about p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #9CA3AF;
}

.footer__links a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: #9CA3AF;
  transition: var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

.footer__contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  align-items: flex-start;
}

.footer__contact-item svg {
  flex-shrink: 0;
  margin-top: 3px;
}

.footer__bar {
  margin-top: 40px;
  padding: 20px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.8rem;
  color: #6B7280;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  text-decoration: none;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background-color: var(--color-primary);
  color: #000;
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(247, 181, 44, 0.3);
}

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

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--white {
  background-color: var(--color-bg-white);
  color: var(--color-text-heading);
}

.btn--white:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn--lg {
  padding: 14px 36px;
  font-size: 1.05rem;
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 32px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- Page Header / Banner ---------- */
.page-header {
  background-color: var(--color-bg-alt);
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.page-header h1 {
  font-size: 2.25rem;
  margin-bottom: 8px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

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

.breadcrumb span {
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-color: var(--color-bg-dark);
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.3) 100%);
}

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

.hero__content h1 {
  color: #fff;
  font-size: 3rem;
  max-width: 640px;
  margin-bottom: 20px;
}

.hero__content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  max-width: 520px;
  margin-bottom: 28px;
  line-height: 1.7;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background-color: var(--color-primary);
  padding: 60px 0;
  text-align: center;
}

.cta-banner h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(0, 0, 0, 0.7);
  font-size: 1.05rem;
  margin-bottom: 24px;
}

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-heading);
  margin-bottom: 6px;
}

.form-group label .required {
  color: #EF4444;
  margin-left: 2px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--color-text-body);
  background: var(--color-bg-white);
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(247, 181, 44, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-input.error,
.form-textarea.error {
  border-color: #EF4444;
}

.form-error {
  font-size: 0.8rem;
  color: #EF4444;
  margin-top: 4px;
  display: none;
}

.form-error.visible {
  display: block;
}

/* Radio group */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 400;
  cursor: pointer;
  font-size: 0.9rem;
}

.radio-group input[type="radio"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
}

/* Form status messages */
.form-status {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: none;
  margin-top: 16px;
}

.form-status.success {
  display: block;
  background-color: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}

.form-status.error {
  display: block;
  background-color: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

.form-status.loading {
  display: block;
  background-color: #FFF7ED;
  color: #92400E;
  border: 1px solid #FED7AA;
}

/* ---------- Tables ---------- */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.table-wrapper th,
.table-wrapper td {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border-light);
}

.table-wrapper th {
  background-color: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-text-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table-wrapper tbody tr:last-child td {
  border-bottom: none;
}

.table-wrapper tbody tr:hover {
  background-color: var(--color-bg-alt);
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: 28px;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: 3px solid var(--color-bg-white);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline__title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.timeline__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- Accordion ---------- */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion__item {
  border-bottom: 1px solid var(--color-border);
}

.accordion__item:last-child {
  border-bottom: none;
}

.accordion__trigger {
  width: 100%;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-heading);
  background: var(--color-bg-white);
  text-align: left;
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.accordion__trigger svg {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.accordion__item.active .accordion__trigger svg {
  transform: rotate(180deg);
}

.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.accordion__body {
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---------- Grids ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

/* ---------- Horizontal Flow (Arrow Steps) ---------- */
.flow-steps {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 16px 0;
}

.flow-step {
  flex: 1;
  min-width: 140px;
  padding: 16px 20px 16px 28px;
  background-color: var(--color-primary);
  color: #000;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  position: relative;
  clip-path: polygon(0% 0%, calc(100% - 16px) 0%, 100% 50%, calc(100% - 16px) 100%, 0% 100%, 16px 50%);
}

.flow-step:first-child {
  clip-path: polygon(0% 0%, calc(100% - 16px) 0%, 100% 50%, calc(100% - 16px) 100%, 0% 100%);
  padding-left: 20px;
}

.flow-step--blue {
  background-color: #3B82F6;
  color: #fff;
}

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

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

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

/* ---------- Google Maps ---------- */
.map-embed {
  width: 100%;
  height: 300px;
  border: none;
  border-radius: var(--radius-md);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }

  .hero__content h1 { font-size: 2.5rem; }

  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

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

  h1 { font-size: 1.85rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .section { padding: var(--section-padding-mobile); }

  /* Header mobile */
  .header__nav { display: none; }
  .hamburger { display: flex; }
  .mobile-nav,
  .mobile-nav-overlay { display: block; }

  /* Hero mobile */
  .hero { min-height: 420px; }
  .hero__content h1 { font-size: 2rem; }
  .hero__content p { font-size: 1rem; }

  /* Grids mobile */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Footer mobile */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Flow steps mobile → vertical */
  .flow-steps {
    flex-direction: column;
    gap: 4px;
  }

  .flow-step,
  .flow-step:first-child {
    clip-path: none;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    min-width: unset;
  }

  /* CTA banner */
  .cta-banner { padding: 40px 0; }
  .cta-banner h2 { font-size: 1.4rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .header__inner { padding: 0 16px; }

  .btn--lg {
    padding: 12px 24px;
    font-size: 0.95rem;
    width: 100%;
  }
}