/* ========================================
   Variables
   ======================================== */
:root {
  --color-navy-darkest: #1A2D3D;
  --color-navy-dark: #1E3A4F;
  --color-navy: #2B5278;
  --color-blue: #3A8FD6;
  --color-blue-light: #5AAAE8;
  --color-gray-bg: #F4F8FC;
  --color-gray-text: #333D4B;
  --color-gray-light: #8899A6;
  --color-gray-border: #DFE3E8;
  --color-white: #FFFFFF;
  --font-sans: "Noto Sans JP", "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --font-serif: "Noto Serif JP", "游明朝", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-serif-en: "Cormorant Garamond", "Georgia", serif;
  --header-height: 64px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-gray-text);
  line-height: 1.8;
  font-weight: 400;
  font-size: 15px;
  background: var(--color-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

.sp-only {
  display: none;
}

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

.header.is-scrolled {
  background: var(--color-navy-dark);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 0.08em;
}

.header-logo-sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.7;
}

.header-nav {
  display: flex;
  gap: 32px;
}

.header-nav a {
  font-size: 0.82rem;
  color: var(--color-white);
  opacity: 0.75;
  transition: opacity var(--transition);
  letter-spacing: 0.06em;
}

.header-nav a:hover {
  opacity: 1;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Hero
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy);
  overflow: hidden;
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?w=1920&q=80&auto=format');
  background-size: cover;
  background-position: center 5%;
  filter: brightness(0.8) saturate(1.2);
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30, 58, 79, 0.15) 0%, rgba(43, 82, 120, 0.3) 100%);
}

.hero-content {
  position: relative;
  text-align: center;
  color: var(--color-white);
  padding: 0 24px;
}

.hero-name-en {
  font-family: var(--font-serif-en);
  font-size: 0.9rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  opacity: 0.45;
  margin-bottom: 16px;
  font-weight: 400;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  margin-bottom: 20px;
}

.hero-divider {
  width: 48px;
  height: 1px;
  background: var(--color-blue);
  margin: 0 auto 20px;
}

.hero-title {
  font-size: 1rem;
  letter-spacing: 0.2em;
  opacity: 0.8;
  margin-bottom: 4px;
}

.hero-office {
  font-size: 0.85rem;
  opacity: 0.5;
  margin-bottom: 40px;
}

.hero-catchcopy {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  opacity: 0.85;
  margin-bottom: 56px;
  line-height: 1.8;
  font-weight: 400;
}

.hero-cta {
  display: inline-block;
  padding: 15px 44px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  transition: all var(--transition);
  border-radius: 3px;
}

.hero-cta:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   Sections (common)
   ======================================== */
.section {
  padding: 96px 0;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.section-title {
  font-family: var(--font-serif-en);
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-blue);
  font-weight: 500;
  margin-bottom: 6px;
}

.section-title--light {
  color: rgba(255, 255, 255, 0.5);
}

.section-title-ja {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  margin-bottom: 56px;
  color: var(--color-navy-dark);
}

.section-title-ja--light {
  color: var(--color-white);
}

/* ========================================
   About
   ======================================== */
.about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  align-items: start;
}

.about-photo-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 12%;
  border-radius: 8px;
}

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

.about-profile-list {
  margin-top: 28px;
  border-top: 1px solid var(--color-gray-border);
}

.about-profile-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-gray-border);
  align-items: baseline;
}

.about-profile-list dt {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-blue);
}

.about-profile-list dd {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-navy-dark);
}

/* ========================================
   Practice Areas
   ======================================== */
.practice {
  background: var(--color-gray-bg);
}

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

.practice-card {
  position: relative;
  background: var(--color-white);
  border-radius: 4px;
  padding: 44px 32px 36px;
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
  transition: transform var(--transition), box-shadow var(--transition);
}

.practice-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
}

.practice-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-blue);
  border-radius: 4px 4px 0 0;
  opacity: 0.7;
}

.practice-icon {
  width: 48px;
  height: 48px;
  color: var(--color-blue);
  margin-bottom: 20px;
}

.practice-card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-navy-dark);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.practice-card-text {
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--color-gray-text);
  margin-bottom: 20px;
}

.practice-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.practice-tags li {
  font-size: 0.72rem;
  padding: 3px 10px;
  background: var(--color-gray-bg);
  color: var(--color-gray-text);
  border-radius: 100px;
  letter-spacing: 0.02em;
}

/* ========================================
   Access
   ======================================== */
.access {
  background: var(--color-white);
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.access-office-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-navy-dark);
  margin-bottom: 24px;
  letter-spacing: 0.06em;
}

.access-dl {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px 16px;
  font-size: 0.9rem;
}

.access-dl dt {
  font-weight: 600;
  color: var(--color-navy-dark);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.access-dl dd {
  color: var(--color-gray-text);
  line-height: 1.7;
}

.access-dl dd a {
  color: var(--color-blue);
  transition: opacity var(--transition);
}

.access-dl dd a:hover {
  opacity: 0.7;
}

.access-map {
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.access-map iframe {
  display: block;
}

/* ========================================
   Contact
   ======================================== */
.contact {
  background: var(--color-navy-dark);
  text-align: center;
}

.contact-text {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 36px;
  line-height: 1.8;
}

.contact-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 24px;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: all var(--transition);
}

.contact-btn-icon {
  width: 20px;
  height: 20px;
}

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

.contact-btn--primary:hover {
  background: var(--color-blue-light);
}

.contact-btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.contact-btn--secondary:hover {
  border-color: var(--color-white);
}

.contact-note {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-navy-darkest);
  padding: 24px 0;
  text-align: center;
}

.footer-text {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.04em;
}

/* ========================================
   Responsive — Tablet (768px)
   ======================================== */
@media (max-width: 768px) {
  .sp-only {
    display: inline;
  }

  .hamburger {
    display: flex;
  }

  .header-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 260px;
    height: 100vh;
    background: var(--color-navy-dark);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.3);
  }

  .header-nav.is-open {
    transform: translateX(0);
  }

  .header-nav a {
    padding: 16px 0;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .hero-name {
    font-size: 2.4rem;
    letter-spacing: 0.2em;
  }

  .hero-catchcopy {
    font-size: 1.05rem;
  }

  .section {
    padding: 72px 0;
  }

  .section-title-ja {
    font-size: 1.5rem;
    margin-bottom: 36px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-photo-img {
    max-width: 200px;
    margin: 0 auto;
    display: block;
  }

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

  .access-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-buttons {
    flex-direction: column;
    align-items: center;
  }

  .contact-btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

}

/* ========================================
   Responsive — Small Mobile (480px)
   ======================================== */
@media (max-width: 480px) {
  .hero-name {
    font-size: 1.8rem;
  }

  .hero-name-en {
    font-size: 0.72rem;
  }

  .hero-catchcopy {
    font-size: 0.95rem;
  }

  .hero-cta {
    padding: 12px 32px;
    font-size: 0.85rem;
  }

  .section {
    padding: 56px 0;
  }

  .section-title-ja {
    font-size: 1.3rem;
    margin-bottom: 28px;
  }

  .practice-card {
    padding: 32px 20px 24px;
  }

  .access-dl {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .access-dl dt {
    margin-top: 12px;
  }

  .access-dl dt:first-child {
    margin-top: 0;
  }
}

/* ========================================
   Contact Form Page
   ======================================== */

/* Page Hero (compact) */
.page-hero {
  position: relative;
  padding: 148px 0 72px;
  background: linear-gradient(160deg, var(--color-navy-dark) 0%, var(--color-navy) 100%);
  text-align: center;
  overflow: hidden;
}

.page-hero .hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(30deg, rgba(58, 123, 213, 0.04) 1px, transparent 1px),
    linear-gradient(150deg, rgba(58, 123, 213, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.page-hero-content {
  position: relative;
}

.page-hero-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--color-white);
  margin-top: 8px;
  margin-bottom: 24px;
}

.page-hero-lead {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.9;
  letter-spacing: 0.04em;
}

/* Form Section */
.form-section {
  background: var(--color-gray-bg);
  opacity: 1;
  transform: none;
}

/* Notice bar */
.form-notice {
  background: var(--color-white);
  border-left: 2px solid var(--color-blue);
  padding: 18px 24px;
  margin-bottom: 48px;
  border-radius: 0 4px 4px 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.form-notice-text {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-gray-text);
}

.form-notice-text a {
  color: var(--color-blue);
  font-weight: 600;
}

.form-notice-sub {
  font-size: 0.78rem;
  color: var(--color-gray-light);
}

/* Form structure */
.inquiry-form {
  max-width: 640px;
  margin: 0 auto;
}

.form-fieldset {
  border: none;
  background: var(--color-white);
  border-radius: 6px;
  padding: 44px 40px;
  margin-bottom: 28px;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
}

.form-legend {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-navy-dark);
  letter-spacing: 0.1em;
  margin: 0 0 36px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-gray-border);
}

/* Form rows */
.form-row {
  display: flex;
  gap: 16px;
}

.form-row--half {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group:last-child {
  margin-bottom: 0;
}

/* Labels */
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-navy-dark);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.form-required {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--color-blue);
  background: rgba(45, 107, 191, 0.08);
  padding: 2px 8px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
  letter-spacing: 0.06em;
}

.form-help {
  font-size: 0.76rem;
  color: var(--color-gray-light);
  margin-bottom: 10px;
  line-height: 1.6;
}

/* Inputs */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.88rem;
  font-family: var(--font-sans);
  color: var(--color-gray-text);
  border: 1px solid var(--color-gray-border);
  border-radius: 6px;
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.6;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(45, 107, 191, 0.08);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #C0C8D2;
  font-size: 0.84rem;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

/* Radio & Checkbox */
.form-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.form-radio-group--vertical {
  flex-direction: column;
  gap: 10px;
}

.form-radio,
.form-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-gray-text);
  cursor: pointer;
}

.form-radio input,
.form-checkbox input {
  accent-color: var(--color-blue);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.form-checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* Category cards */
.form-category-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-category-card {
  cursor: pointer;
}

.form-category-card input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-category-card-inner {
  display: block;
  padding: 20px 20px;
  border: 1px solid var(--color-gray-border);
  border-radius: 8px;
  transition: all var(--transition);
  background: var(--color-white);
  min-height: 100%;
}

.form-category-card input:checked + .form-category-card-inner {
  border-color: var(--color-blue);
  background: rgba(45, 107, 191, 0.03);
  box-shadow: 0 0 0 1px var(--color-blue);
}

.form-category-card:hover .form-category-card-inner {
  border-color: var(--color-blue-light);
  background: rgba(45, 107, 191, 0.01);
}

.form-category-card-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-navy-dark);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.form-category-card-desc {
  display: block;
  font-size: 0.7rem;
  color: var(--color-gray-light);
  line-height: 1.6;
}

/* Sub-options */
.form-sub-options {
  background: rgba(45, 107, 191, 0.02);
  border: 1px solid rgba(45, 107, 191, 0.1);
  border-radius: 8px;
  padding: 24px 28px;
  margin-bottom: 24px;
}

/* Urgency note */
.form-urgency-note {
  background: #FFF8E1;
  border: 1px solid #FFE082;
  border-radius: 4px;
  padding: 12px 16px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-gray-text);
}

.form-urgency-note strong {
  color: #E65100;
}

.form-urgency-note a {
  color: var(--color-blue);
  font-weight: 600;
}

/* Consent */
.form-consent {
  text-align: center;
  margin-bottom: 28px;
  font-size: 0.82rem;
  color: var(--color-gray-text);
}

.form-consent-link {
  color: var(--color-blue);
  text-decoration: underline;
}

/* Submit */
.form-submit-area {
  text-align: center;
}

.form-submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 56px;
  background: var(--color-navy-dark);
  color: var(--color-white);
  font-size: 0.88rem;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0.12em;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}

.form-submit-btn:hover {
  background: var(--color-navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(10, 22, 40, 0.2);
}

.form-submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.form-submit-icon {
  width: 20px;
  height: 20px;
}

.form-submit-note {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--color-gray-light);
}

/* Completion screen */
.form-complete {
  text-align: center;
  padding: 60px 20px;
}

.form-complete-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
}

.form-complete-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-navy-dark);
  margin-bottom: 20px;
  letter-spacing: 0.12em;
}

.form-complete-text {
  font-size: 0.9rem;
  color: var(--color-gray-text);
  line-height: 1.8;
  margin-bottom: 32px;
}

.form-complete-link {
  display: inline-block;
  padding: 12px 32px;
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  border-radius: 4px;
  transition: all var(--transition);
}

.form-complete-link:hover {
  background: var(--color-blue);
  color: var(--color-white);
}

/* Current nav indicator */
.header-nav a.is-current {
  opacity: 1;
}

/* ========================================
   Contact Form — Responsive
   ======================================== */
@media (max-width: 768px) {
  .page-hero {
    padding: 116px 0 48px;
  }

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

  .form-fieldset {
    padding: 28px 24px;
  }

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

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

  .form-row--half .form-group,
  .form-row--half .form-group:last-child {
    margin-bottom: 20px;
  }

  .form-category-cards {
    grid-template-columns: 1fr;
  }

  .form-checkbox-group {
    grid-template-columns: 1fr;
  }

  .form-sub-options {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .page-hero {
    padding: 100px 0 36px;
  }

  .page-hero-title {
    font-size: 1.3rem;
  }

  .form-fieldset {
    padding: 24px 18px;
  }

  .form-submit-btn {
    width: 100%;
    justify-content: center;
  }
}