/* ============================================
   眼科クリニック - 共通スタイルシート
   Mobile-first, single-column layout
   ============================================ */

/* --- CSS Custom Properties (Light Mode) --- */
:root {
  --color-primary: #4a90a4;
  --color-primary-dark: #3a7a8e;
  --color-bg: #fdfdfd;
  --color-bg-secondary: #f0f5f7;
  --color-text: #000;
  --color-text-secondary: #555;
  --color-border: #ccc;
  --color-link: #2a6f8a;
  --color-link-hover: #1a4f66;
  --color-header-bg: #fff;
  --color-header-shadow: rgba(0, 0, 0, 0.08);
  --color-badge-shadow: rgba(0, 0, 0, 0.1);
  --color-focus-ring: #2a6f8a;
  --color-surface-soft: #edf3ee;

  --font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;

  /* ロゴフォント比較用。DevTools で値を切り替えてプレビュー：
     "Noto Serif JP", serif
     "Zen Maru Gothic", sans-serif
     "M PLUS Rounded 1c", sans-serif
     "Zen Kaku Gothic New", sans-serif
     "M PLUS 1p", sans-serif
  */
  --font-logo: "M PLUS 1p", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;

  --font-weight-body: 400;
  --font-weight-heading: 700;
  --font-weight-phone: 700;
  --font-size-base: 1rem;   /* 16px minimum */
  --font-size-lg: 1.75rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 1.75rem;
  --font-size-intro: 1rem;
  --font-size-news-body: 1.25rem;
  --font-size-news-date: 1rem;
  --font-size-table: 1rem;
  --font-size-nav: 0.875rem;
  --font-size-subtitle: 0.875rem;
  --font-size-address: 1rem;

  --header-height: 4.5rem;
  --max-width: 960px;
  --spacing: 1rem;
  --spacing-lg: 2rem;
}

/* --- Dark Mode (OS detection) --- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #6ab4cc;
    --color-primary-dark: #5a9ab0;
    --color-bg: #000;
    --color-bg-secondary: #000;
    --color-text: #e0e0e0;
    --color-text-secondary: #aaa;
    --color-border: #666;
    --color-link: #7ec8e3;
    --color-link-hover: #a0daf0;
    --color-header-bg: #000;
    --color-header-shadow: rgba(0, 0, 0, 0.3);

    --color-badge-shadow: rgba(0, 0, 0, 0.3);
    --color-focus-ring: #7ec8e3;
    --color-surface-soft: #16201a;
  }
}

/* --- High Contrast Mode (OS detection) --- */
@media (prefers-contrast: more) {
  :root {
    --color-primary: #005580;
    --color-primary-dark: #003d5c;
    --color-bg: #fff;
    --color-bg-secondary: #f0f0f0;
    --color-text: #000;
    --color-text-secondary: #222;
    --color-border: #000;
    --color-link: #003d5c;
    --color-link-hover: #001f33;
    --color-header-bg: #fff;
    --color-header-shadow: rgba(0, 0, 0, 0.2);

    --color-badge-shadow: rgba(0, 0, 0, 0.3);
    --color-focus-ring: #000;
    --color-surface-soft: #fff;
  }
}

@media (prefers-contrast: more) and (prefers-color-scheme: dark) {
  :root {
    --color-bg: #000;
    --color-bg-secondary: #111;
    --color-text: #fff;
    --color-text-secondary: #ddd;
    --color-border: #fff;
    --color-link: #80d0ff;
    --color-link-hover: #b0e0ff;
    --color-header-bg: #000;

    --color-focus-ring: #80d0ff;
    --color-surface-soft: #000;
  }
}

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

html {
  font-size: 100%; /* 16px base */
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-body);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-text-size-adjust: 100%;
  overflow-wrap: break-word;
  word-break: normal;
}

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

a {
  color: var(--color-link);
  text-decoration: underline;
}

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

a:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}

/* --- Accessibility Utilities --- */
.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 {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 1000;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: bold;
  text-decoration: none;
}

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

/* --- Header --- */
.site-header-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  box-shadow: 0 2px 4px var(--color-header-shadow);
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: var(--header-height);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.5rem var(--spacing);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
  font-size: 1.25rem;
  min-width: 0;
}

.site-header__logo-icon {
  height: 1.8em;
  width: auto;
  flex-shrink: 0;
}

.site-header__logo-text {
  font-family: var(--font-logo);
  font-size: 1em;
  font-weight: var(--font-weight-heading);
  white-space: nowrap;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-header__logo-sub {
  font-size: 0.4em;
  font-weight: 400;
  color: #000;
  white-space: nowrap;
  margin-left: 0.15em;
}

@media (prefers-color-scheme: dark) {
  .site-header__logo-sub {
    color: #fff;
  }
}

.site-header__phone {
  justify-self: end;
  align-self: center;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: var(--font-weight-phone);
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.site-header__phone-icon svg {
  width: 1.5em;
  height: 1.5em;
}

.site-header__phone:hover {
  color: var(--color-primary-dark);
}

.site-header__phone-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5em;
  height: 2.5em;
  background: #d4ebdb;
  color: #2E7D4E;
  border-radius: 50%;
  flex-shrink: 0;
}

.site-header__phone-number {
  display: none;
  color: #2E7D4E;
}

@media (prefers-color-scheme: dark) {
  .site-header__phone-number {
    color: #d4ebdb;
  }
}

/* --- Main Content Area --- */
.site-main {
  display: grid;
  grid-template-columns: 1fr;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing) var(--spacing) 0;
}

/* --- Section Spacing --- */
.section {
  min-width: 0;
  padding: 1.25rem 0;
}

.site-intro {
  padding: 0;
  margin: 0.5rem 0 1rem;
  color: var(--color-text);
  font-family: var(--font-logo);
  font-size: var(--font-size-intro);
  line-height: 1.7;
  text-align: center;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.section:first-child {
  padding-top: 0;
}

.section__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-heading);
  color: var(--color-text);
  margin-bottom: 1rem;
  padding-bottom: 0;
  border-bottom: none;
}

.section__title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 1em;
  background: #2E7D4E;
  border-radius: 2px;
  flex-shrink: 0;
}

.section__subtitle {
  font-size: var(--font-size-subtitle);
  color: var(--color-text);
  margin-top: -0.5rem;
  margin-bottom: 1rem;
  padding-left: 14px;
}

/* --- News Horizontal Scroll --- */
.news-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem;
}

.news-scroll__item {
  flex: 0 0 80%;
  min-width: 240px;
  scroll-snap-align: center;
  background: var(--color-surface-soft);
  border: none;
  border-radius: 8px;
  padding: 14px 16px;
}

.news-scroll__item time {
  display: block;
  font-size: var(--font-size-news-date);
  color: var(--color-text);
  margin-bottom: 0;
}

.news-scroll__item p {
  font-size: var(--font-size-news-body);
  color: var(--color-text);
  line-height: 1.7;
  margin-top: 6px;
}

/* Scrollbar styling */
.news-scroll::-webkit-scrollbar {
  height: 6px;
}

.news-scroll::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: 3px;
}

.news-scroll::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

/* --- Schedule Table --- */
.table-wrapper {
  overflow-x: auto;
}

.schedule-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  border: 0.5px solid rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.schedule-table th,
.schedule-table td {
  border: none;
  vertical-align: middle;
  color: var(--color-text);
  font-weight: 400;
}

.schedule-table thead th {
  background: transparent;
  padding: 11px 4px;
  font-size: var(--font-size-table);
  text-align: center;
}

.schedule-table tbody th,
.schedule-table tbody td {
  border-top: 0.5px solid rgba(0, 0, 0, 0.06);
}

.schedule-table tbody th {
  background: transparent;
  white-space: nowrap;
  text-align: center;
  padding: 13px 6px;
  font-size: var(--font-size-table);
}

.schedule-table tbody td {
  text-align: center;
  padding: 13px 4px;
  white-space: nowrap;
}

.schedule-table tbody .schedule-table__row--highlight th,
.schedule-table tbody .schedule-table__row--highlight td {
  background: var(--color-surface-soft);
}

/* --- Schedule Symbols --- */
.symbol-open {
  display: inline-block;
  width: 0.8em;
  height: 0.8em;
  background: var(--color-text);
  border-radius: 50%;
  vertical-align: middle;
}

.symbol-reserved {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  color: #2E7D4E;
}

.symbol-reserved svg {
  display: block;
  width: 0.8em;
  height: 0.8em;
}

.symbol-closed {
  color: var(--color-text);
  font-size: var(--font-size-table);
  vertical-align: middle;
}

.symbol-surgery {
  font-size: var(--font-size-table);
  color: var(--color-text);
}

/* --- Schedule Legend --- */
.schedule-legend {
  display: grid;
  grid-auto-flow: column;
  justify-content: start;
  gap: 14px;
  margin: 0.5rem 0 1rem;
  font-size: var(--font-size-table);
  color: var(--color-text);
}

.schedule-legend__item {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

/* --- Closed Days --- */
.closed-days {
  font-weight: 400;
  margin: 1rem 0;
  padding: 12px 14px;
  background: var(--color-surface-soft);
  border-radius: 8px;
  font-size: var(--font-size-table);
  color: var(--color-text);
}

.closed-days strong {
  font-weight: 500;
}

/* --- Reception Notice (eyewear / contact lens) --- */
/* Base = mobile (< 600px). Tablet (≥ 600px) と PC (≥ 800px) は下の media query で上書き。 */
.reception-notice {
  --reception-accent: #2E7D4E;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "icon title"
    "body body";
  column-gap: 12px;
  row-gap: 10px;
  align-items: center;
  margin: 1rem 0;
  padding: 14px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.reception-notice__icon {
  grid-area: icon;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--color-surface-soft);
  border-radius: 50%;
}

.reception-notice__icon img {
  width: 60%;
  height: auto;
}

.reception-notice__title {
  grid-area: title;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.reception-notice__body {
  grid-area: body;
  display: grid;
  row-gap: 0.5rem;
  padding-top: 10px;
  border-top: 1px dotted var(--color-border);
  font-size: var(--font-size-table);
  color: var(--color-text);
  line-height: 1.9;
}

.reception-notice__lead {
  margin: 0;
}

.reception-notice__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  row-gap: 0.4rem;
}

.reception-notice__list li {
  padding-left: 1.25em;
  text-indent: -1.25em;
}

.reception-notice__list li::before {
  content: "・";
  color: var(--color-text);
  margin-right: 0.25em;
}

@media (prefers-color-scheme: dark) {
  .reception-notice__list li::before {
    color: #fff;
  }
}

.reception-notice__list strong {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--reception-accent);
  margin: 0 0.15em;
  white-space: nowrap;
}

.reception-notice__br-sm {
  display: inline;
}

/* タブレット以上 ≥ 600px */
@media (min-width: 600px) {
  .reception-notice {
    column-gap: 14px;
    row-gap: 12px;
    padding: 18px 20px;
    border-radius: 12px;
  }
  .reception-notice__icon {
    width: 56px;
    height: 56px;
  }
  .reception-notice__title {
    font-size: var(--font-size-lg);
  }
  .reception-notice__body {
    row-gap: 0.75rem;
    padding-top: 12px;
  }
  .reception-notice__list {
    row-gap: 0.5rem;
  }
  .reception-notice__list strong {
    font-size: var(--font-size-lg);
  }
  .reception-notice__br-sm {
    display: none;
  }
}

/* PC ≥ 800px */
@media (min-width: 800px) {
  .reception-notice {
    column-gap: 18px;
    row-gap: 16px;
    padding: 24px 28px;
    border-radius: 14px;
  }
  .reception-notice__icon {
    width: 80px;
    height: 80px;
  }
  .reception-notice__body {
    row-gap: 1rem;
    padding-top: 16px;
  }
  .reception-notice__list {
    row-gap: 0.6rem;
  }
}

/* --- Map --- */
.map-container {
  width: 100%;
  margin: 1rem 0;
}

.reception-notice + .map-container {
  margin-top: 3.25em;
}

.map-container iframe {
  width: 100%;
  height: 300px;
  border: 0;
  border-radius: 8px;
}

/* --- Address Block --- */
.address-block {
  font-style: normal;
  margin-top: 1rem;
  font-size: var(--font-size-address);
  color: var(--color-text);
}

.address-block dl {
  display: grid;
  grid-template-columns: minmax(56px, auto) 1fr;
  gap: 0.25rem 1rem;
  align-items: baseline;
}

.address-block dt {
  font-weight: 500;
  color: var(--color-text);
  font-size: var(--font-size-address);
}

.address-block dd {
  margin: 0;
}

.address-block a[href^="tel:"] {
  color: #2E7D4E;
  text-decoration: none;
}

/* --- Service Grid (1 column default, 2 columns on wider) --- */
.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.service-grid__item {
  display: grid;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-badge-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}

.service-grid__item > img,
.service-grid__item > .service-grid__label {
  grid-area: 1 / 1;
}

.service-grid__item > img {
  width: 100%;
  height: auto;
}

.service-grid__item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--color-badge-shadow);
}

.service-grid__item--no-link {
  cursor: default;
}

.service-grid__item--no-link:hover {
  transform: none;
  box-shadow: 0 2px 8px var(--color-badge-shadow);
}

.service-grid__label {
  display: grid;
  place-content: center;
  text-align: center;
  padding: 1rem 0.5rem;
  color: #fff;
}

.service-grid__title {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-heading);
  line-height: 1.3;
}

.service-grid__subtitle {
  display: block;
  font-size: var(--font-size-subtitle);
  opacity: 0.85;
  margin-top: 0.25rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-surface-soft);
  color: var(--color-text);
  text-align: center;
  padding: var(--spacing-lg) var(--spacing);
  margin-top: var(--spacing-lg);
}

.site-footer a {
  color: var(--color-text);
}

/* --- Sub Page Content --- */
.page-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding: var(--spacing-lg) 0;
}

.page-content h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-heading);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color-primary);
}

.page-content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-heading);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.page-content p {
  margin-bottom: 1rem;
}

/* --- Breadcrumb --- */
.breadcrumb {
  padding: var(--spacing) 0 0;
  font-size: var(--font-size-nav);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  list-style: none;
}

.breadcrumb li:not(:last-child)::after {
  content: "\FF1E";
  margin-left: 0.25rem;
  color: var(--color-text-secondary);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-text-secondary);
}

/* --- Sibling Navigation --- */
.sibling-nav {
  padding: var(--spacing-lg) 0;
}

.sibling-nav ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.sibling-nav a {
  display: grid;
  place-items: center;
  min-height: 44px;
  padding: 0.5rem;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: var(--font-size-nav);
  text-align: center;
}

.sibling-nav a:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

/* --- Tablet (phone number visible, logo stays mobile size) --- */
@media (min-width: 600px) {
  :root {
    --font-size-lg: 1.875rem;
    --font-size-news-body: 1.5rem;
    --font-size-news-date: 1.25rem;
    --font-size-table: 1.25rem;
    --font-size-address: 1.375rem;
    --header-height: 6rem;
    --font-size-intro: 1.25rem;
  }

  .site-header__logo {
    font-size: 1.5rem;
  }

  .site-header__phone {
    font-size: 1.5rem;
  }

  .site-header__phone-number {
    display: inline;
  }
}

/* --- PC (iPad 11-inch+: scale up, no layout change) --- */
@media (min-width: 800px) {
  :root {
    --header-height: 7rem;
    --font-size-base: 2rem;
    --font-size-intro: 1.5rem;
    --font-size-news-body: 1.5rem;
    --font-size-news-date: 1.25rem;
    --font-size-table: 1.5rem;
    --font-size-nav: 1.75rem;
    --font-size-subtitle: 1.75rem;
    --font-size-address: 1.75rem;
    --font-size-lg: 2rem;
    --font-size-xl: 3rem;
    --font-size-2xl: 3.5rem;
  }

  .site-header__logo {
    font-size: 1.75rem;
  }

  .site-header__phone {
    font-size: 1.75rem;
  }

  .site-header__phone-number {
    display: inline;
  }

  .site-main {
    padding: var(--spacing) var(--spacing-lg) 0;
  }

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

  .map-container iframe {
    height: 400px;
  }
}