/* ========================================
   Okano Accounting Office - Main Styles
   ======================================== */

/* CSS Variables */
:root {
  /* Colors */
  --primary-blue: #1a4b8c;
  --primary-dark: #0d2b4d;
  --accent-blue: #2563eb;
  --light-blue: #3b82f6;
  --light-gray: #f8fafc;
  --medium-gray: #64748b;
  --dark-gray: #334155;
  --white: #ffffff;
  --border-gray: #e2e8f0;
  --success-green: #10b981;
  --error-red: #ef4444;
  
  /* Typography */
  --font-primary: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
  --font-heading: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Container */
  --container-max: 1200px;
  --container-padding: 1rem;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

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

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

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary-dark);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-md);
}

/* ========================================
   Layout
   ======================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section--gray {
  background-color: var(--light-gray);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section__title {
  margin-bottom: var(--spacing-sm);
}

.section__subtitle {
  color: var(--medium-gray);
  font-size: 1.125rem;
}

/* ========================================
   Grid System
   ======================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

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

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

/* ========================================
   Header
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: box-shadow var(--transition-normal);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.header__nav-link {
  color: var(--dark-gray);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

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

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

.header__nav-link:hover {
  color: var(--primary-blue);
}

.header__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.header__mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--dark-gray);
  transition: var(--transition-fast);
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background-color: var(--primary-dark);
  color: var(--white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.footer__address {
  font-style: normal;
  line-height: 1.8;
  opacity: 0.9;
}

.footer__address p {
  margin-bottom: var(--spacing-xs);
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.footer__contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.footer__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--white);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
}

.footer__disclaimer {
  font-size: 0.875rem;
  opacity: 0.7;
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.footer__copyright {
  font-size: 0.875rem;
  opacity: 0.8;
  text-align: center;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  color: var(--white);
  padding-top: 70px;
  overflow: hidden;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.1;
  background-image: url('../assets/tokyo.jpg');
  background-size: cover;
  background-position: center;
}

.hero__container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero__content {
  max-width: 600px;
}

.hero__badge {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  color: var(--white);
  line-height: 1.2;
}

.hero__subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  gap: var(--spacing-md);
}

.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-align: center;
}

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

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

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

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

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

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

.btn--large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn--small {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

/* ========================================
   Cards
   ======================================== */

.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__content {
  padding: var(--spacing-lg);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card__text {
  color: var(--medium-gray);
  font-size: 0.95rem;
}

/* ========================================
   Forms
   ======================================== */

.form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form__label {
  font-weight: 500;
  color: var(--dark-gray);
}

.form__input,
.form__textarea,
.form__select {
  padding: var(--spacing-md);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.form__checkbox input {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  accent-color: var(--accent-blue);
}

.form__checkbox label {
  font-size: 0.875rem;
  color: var(--medium-gray);
  line-height: 1.5;
}

.form__consent {
  font-size: 0.875rem;
  color: var(--medium-gray);
  margin-top: var(--spacing-sm);
}

.form__error {
  color: var(--error-red);
  font-size: 0.875rem;
}

.form__success {
  color: var(--success-green);
  font-size: 0.875rem;
}

/* ========================================
   Cookie Banner
   ======================================== */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  padding: var(--spacing-lg);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.cookie-banner--visible {
  transform: translateY(0);
}

.cookie-banner__container {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.cookie-banner__content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.cookie-banner__icon {
  font-size: 2rem;
}

.cookie-banner__text {
  flex: 1;
}

.cookie-banner__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.cookie-banner__description {
  font-size: 0.875rem;
  color: var(--medium-gray);
}

.cookie-banner__actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.cookie-banner__link {
  color: var(--accent-blue);
  text-decoration: underline;
}

/* Cookie Settings Modal */
.cookie-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.cookie-modal--visible {
  opacity: 1;
  visibility: visible;
}

.cookie-modal__content {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: var(--spacing-xl);
}

.cookie-modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.cookie-modal__title {
  font-size: 1.5rem;
}

.cookie-modal__close {
  font-size: 1.5rem;
  color: var(--medium-gray);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.cookie-modal__close:hover {
  color: var(--dark-gray);
}

.cookie-category {
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.cookie-category__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.cookie-category__name {
  font-weight: 600;
}

.cookie-category__toggle {
  position: relative;
  width: 50px;
  height: 26px;
}

.cookie-category__toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.cookie-category__slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-gray);
  transition: var(--transition-fast);
  border-radius: 26px;
}

.cookie-category__slider::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--white);
  transition: var(--transition-fast);
  border-radius: 50%;
}

.cookie-category__toggle input:checked + .cookie-category__slider {
  background-color: var(--accent-blue);
}

.cookie-category__toggle input:checked + .cookie-category__slider::before {
  transform: translateX(24px);
}

.cookie-category__toggle input:disabled + .cookie-category__slider {
  opacity: 0.5;
  cursor: not-allowed;
}

.cookie-category__description {
  font-size: 0.875rem;
  color: var(--medium-gray);
}

.cookie-modal__actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* ========================================
   Services Section
   ======================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--light-gray);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card__icon svg {
  width: 30px;
  height: 30px;
  color: var(--accent-blue);
}

.service-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

.service-card__text {
  color: var(--medium-gray);
  font-size: 0.95rem;
}

/* ========================================
   Stats Section
   ======================================== */

.stats {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  color: var(--white);
  padding: var(--spacing-3xl) 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item__number {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.stat-item__label {
  font-size: 1rem;
  opacity: 0.9;
}

/* ========================================
   Contact Section
   ======================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-info__item {
  display: flex;
  gap: var(--spacing-md);
}

.contact-info__icon {
  width: 50px;
  height: 50px;
  background-color: var(--light-gray);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info__icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-blue);
}

.contact-info__content h4 {
  margin-bottom: var(--spacing-xs);
}

.contact-info__content p {
  color: var(--medium-gray);
  margin-bottom: 0;
}

.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 300px;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ========================================
   Lead Form Section
   ======================================== */

.lead-form-section {
  background-color: var(--light-gray);
}

.lead-form-container {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.lead-form__title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   Page Header
   ======================================== */

.page-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  color: var(--white);
  padding: 120px 0 60px;
  text-align: center;
}

.page-header__title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.page-header__subtitle {
  font-size: 1.125rem;
  opacity: 0.9;
}

/* ========================================
   Utility Classes
   ======================================== */

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-blue);
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}