/* ==========================================================
   合同会社xtion-works サイトCSS
   3色構造：base（白〜薄グレー）／main（ロゴのグレー系）／accent（落ち着いた1色）
   ========================================================== */

:root {
  --color-base: #ffffff;
  --color-base-alt: #f5f5f3;
  --color-text: #1f2126;
  --color-main: #8c8c99;
  --color-main-text: #55555f;
  --color-main-border: #d9d9e0;
  --color-accent: #2f4d73;
  --color-accent-hover: #1a2e47;
  --color-error: #b3261e;

  --space-8: 8px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-64: 64px;
  --space-96: 96px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  background: var(--color-base);
  color: var(--color-text);
  font-family: "Yu Gothic", "Hiragino Sans", Meiryo, sans-serif;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.75;
}

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

a {
  color: var(--color-accent);
}

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

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

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

/* 見出し・本文の自動フィット */
h1, h2, h3 {
  font-weight: 700;
  color: var(--color-text);
  text-wrap: balance;
  line-break: strict;
}

@supports (word-break: auto-phrase) {
  h1, h2, h3 {
    word-break: auto-phrase;
  }
}

p, li, dd, dt, time {
  text-wrap: pretty;
  line-break: strict;
  overflow-wrap: anywhere;
}

@supports (word-break: auto-phrase) {
  p, li, dd {
    word-break: auto-phrase;
  }
}

h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.4;
  margin: 0 0 var(--space-16);
}

h2 {
  font-size: clamp(26px, 5vw, 32px);
  line-height: 1.4;
  margin: 0 0 var(--space-24);
}

h3 {
  font-size: 22px;
  line-height: 1.5;
  margin: 0 0 var(--space-8);
}

p {
  margin: 0 0 var(--space-16);
  text-align: left;
}

.nowrap {
  white-space: nowrap;
}

/* ==========================================================
   ヘッダー
   ========================================================== */

.site-header {
  background: var(--color-base);
  border-bottom: 1px solid var(--color-main-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-16);
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.site-header__brand {
  display: inline-flex;
}

.site-header__wordmark {
  width: 160px;
  height: auto;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8) var(--space-24);
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
  text-decoration: none;
  word-break: keep-all;
}

.site-nav a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

@media (max-width: 407px) {
  .site-nav ul {
    display: grid;
    grid-template-columns: repeat(2, auto);
    justify-content: start;
    column-gap: var(--space-32);
  }
}

/* ==========================================================
   セクション共通
   ========================================================== */

.section {
  padding: var(--space-64) 0;
}

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

.section-lead {
  color: var(--color-main-text);
  max-width: 640px;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-96) 0;
  }
}

/* ==========================================================
   ファーストビュー
   ========================================================== */

.hero {
  padding: var(--space-48) 0;
}

.hero__brand {
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 var(--space-8);
}

.hero__title {
  font-size: clamp(28px, 9vw, 56px);
  line-height: 1.3;
}

.ph {
  display: inline-block;
  max-width: 100%;
}

a .ph {
  text-decoration: underline;
}

.hero__sub {
  color: var(--color-main-text);
  font-size: clamp(18px, 4vw, 20px);
  font-weight: 700;
  margin: 0;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-96) 0;
  }
}

/* ==========================================================
   活動日誌
   ========================================================== */

.diary-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-48);
}

.diary-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

.diary-media {
  width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--color-base-alt);
}

.diary-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.diary-media--empty {
  background: none;
  height: 0;
}

.diary-date {
  display: flex;
  flex-direction: column;
}

.diary-date__year {
  color: var(--color-main-text);
  font-size: 14px;
}

.diary-date__md {
  color: var(--color-accent);
  font-size: 28px;
  font-weight: 700;
  white-space: nowrap;
}

.diary-body p {
  margin: 0;
  max-width: 640px;
}

.diary-list .diary-body p {
  display: -webkit-box;
  -webkit-line-clamp: 6;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (min-width: 768px) {
  .diary-item {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-32);
  }

  .diary-date {
    flex: 0 0 112px;
  }

  .diary-media {
    flex: 0 0 34%;
    min-width: 0;
  }

  .diary-media--empty {
    height: auto;
  }

  .diary-body {
    flex: 1 1 auto;
  }

  .diary-list .diary-body p {
    -webkit-line-clamp: 8;
  }
}

/* ==========================================================
   事業内容
   ========================================================== */

.service-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-40);
  margin-top: var(--space-40);
}

.service-item {
  padding-top: var(--space-40);
}

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

.service-item p {
  max-width: 640px;
}

.service-link {
  margin: 0;
}

.service-link a {
  font-weight: 700;
}

.tap-link {
  display: inline-block;
  padding-block: 10px;
}

@media (min-width: 768px) {
  .service-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    column-gap: var(--space-48);
    row-gap: var(--space-48);
  }

  .service-item {
    padding-top: 0;
  }

  .service-item p {
    max-width: none;
  }
}

/* ==========================================================
   お問い合わせ
   ========================================================== */

.contact-note {
  color: var(--color-main-text);
  max-width: 640px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
  max-width: 640px;
  margin-top: var(--space-32);
}

.contact-form fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

.contact-form legend {
  padding: 0;
  margin-bottom: var(--space-8);
  font-size: 16px;
  font-weight: 700;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.form-field label {
  font-size: 16px;
  font-weight: 700;
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field textarea {
  min-height: 48px;
  padding: var(--space-8) var(--space-16);
  border: 1px solid var(--color-main-border);
  border-radius: 4px;
  background: var(--color-base);
  color: var(--color-text);
  font-family: inherit;
  font-size: 16px;
}

.form-field textarea {
  min-height: 144px;
  resize: vertical;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.radio-item {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  min-height: 44px;
  padding: var(--space-8) var(--space-16);
  border: 1px solid var(--color-main-border);
  border-radius: 4px;
  font-weight: 500;
  word-break: keep-all;
  cursor: pointer;
}

.radio-item:hover {
  border-color: var(--color-accent);
}

.radio-item input[type="radio"] {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-error {
  color: var(--color-error);
  font-weight: 700;
  margin: 0;
}

.submit-message {
  max-width: 640px;
  margin-top: var(--space-32);
  padding: var(--space-24);
  border: 1px solid var(--color-main-border);
  border-radius: 4px;
  background: var(--color-base-alt);
}

.submit-message p {
  margin: 0;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .contact-inner {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    column-gap: var(--space-64);
    align-items: start;
  }

  .contact-form {
    max-width: none;
    margin-top: 0;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .contact-inner {
    grid-template-columns: minmax(0, 45fr) minmax(0, 55fr);
    column-gap: 48px;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  min-height: 44px;
  padding: var(--space-16) var(--space-24);
  background: var(--color-accent);
  border: 2px solid var(--color-accent);
  color: var(--color-base);
  font-size: 16px;
  font-family: inherit;
  line-height: 1.5;
  font-weight: 700;
  text-decoration: none;
  word-break: keep-all;
  white-space: nowrap;
}

@media (max-width: 359px) {
  .btn {
    font-size: 15px;
    padding: var(--space-16);
  }
}

@media (min-width: 768px) {
  .btn {
    align-self: flex-start;
    min-width: 200px;
  }
}

.btn:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-base);
  text-decoration: none;
}

/* ==========================================================
   フッター
   ========================================================== */

.site-footer {
  background: var(--color-base);
  border-top: 1px solid var(--color-main-border);
  padding: var(--space-48) 0;
}

.site-footer__wordmark {
  width: 120px;
  margin-bottom: var(--space-16);
}

.site-footer p {
  color: var(--color-main-text);
  font-size: 16px;
  margin: 0 0 var(--space-8);
}

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

.site-footer a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.site-footer__copyright {
  margin-top: var(--space-16);
}

.footer-heading {
  font-size: 16px;
  font-weight: 700;
}

.footer-social {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
}

.icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

@media (min-width: 768px) {
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr;
    column-gap: var(--space-48);
  }
}

/* ==========================================================
   日誌 一覧・個別ページ
   ========================================================== */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  font-size: 16px;
  color: var(--color-main-text);
  overflow-wrap: anywhere;
  margin-bottom: var(--space-32);
}

.breadcrumb a {
  color: var(--color-main-text);
}

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

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

.pager {
  display: flex;
  gap: var(--space-16);
  margin-top: var(--space-48);
}

.pager__next {
  margin-left: auto;
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-base);
}

.diary-list .tap-link {
  text-decoration: underline;
}

.diary-photos {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin: var(--space-24) 0 0;
}

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

.diary-photos img {
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.diary-photos:not(.diary-photos--grid) {
  justify-items: center;
}

.diary-photos:not(.diary-photos--grid) img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 80vh;
  aspect-ratio: auto;
  object-fit: contain;
}

.diary-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  margin-top: var(--space-48);
}

.diary-nav__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding: var(--space-16);
  border: 1px solid var(--color-main-border);
  border-radius: 4px;
  color: var(--color-text);
  text-decoration: none;
}

.diary-nav__item:hover {
  border-color: var(--color-accent);
  text-decoration: none;
}

.diary-nav__label {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-main-text);
}

.diary-nav__date {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
}

.diary-nav__excerpt {
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@supports (word-break: auto-phrase) {
  .diary-nav__excerpt {
    word-break: auto-phrase;
  }
}

@media (min-width: 640px) {
  .diary-nav {
    flex-direction: row;
  }

  .diary-nav__item {
    flex: 1 1 50%;
  }
}

.diary-page {
  max-width: 720px;
  margin-left: 0;
  margin-right: auto;
}

.diary-page .diary-item {
  display: block;
}

.diary-page .diary-date {
  margin-bottom: var(--space-24);
}

.diary-page .diary-date__md {
  font-size: 40px;
}

.diary-page .diary-body p {
  max-width: none;
  font-size: 18px;
  line-height: 1.9;
}

.diary-404 {
  padding: var(--space-64) 0;
}

.diary-404 h1 {
  margin-bottom: var(--space-24);
}

.diary-404 p {
  margin-bottom: var(--space-24);
}

@media (min-width: 768px) {
  .diary-404 {
    padding: var(--space-96) 0;
  }
}