/*
Theme Name: AI Consulting Office
Theme URI: https://example.com/
Author: AI Consulting Office
Author URI: https://example.com/
Description: AIコンサルティング事業向けのシンプルなコーポレートテーマ。事務所概要・代表者紹介・サービス内容・お問い合わせの4ページ構成に対応した個人事業主向けのテーマです。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ai-consulting
*/

/* ==========================================================================
   デザイントークン
   ========================================================================== */
:root {
  --color-navy: #14233f;
  --color-navy-light: #1f3458;
  --color-accent: #2563eb;
  --color-accent-dark: #1d4ed8;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6fb;
  --color-border: #e2e6ef;
  --color-text: #1c2434;
  --color-text-muted: #5a6478;
  --color-text-invert: #ffffff;

  --max-width: 1100px;
  --radius: 10px;
  --shadow-sm: 0 1px 3px rgba(20, 35, 63, 0.08);
  --shadow-md: 0 8px 24px rgba(20, 35, 63, 0.10);

  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

/* ==========================================================================
   ベース
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

h1,
h2,
h3,
h4 {
  line-height: 1.4;
  color: var(--color-navy);
  font-weight: 700;
}

p {
  margin: 0 0 1rem;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.text-muted {
  color: var(--color-text-muted);
}

/* ==========================================================================
   ボタン
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text-invert);
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-text-invert);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-invert);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--color-text-invert);
}

/* ==========================================================================
   ヘッダー
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-branding__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0;
  line-height: 1.3;
}

.site-branding__title a {
  color: inherit;
}

.site-branding__desc {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin: 0;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav__list a {
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 500;
}

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

.main-nav__list .menu-item-cta a {
  background-color: var(--color-accent);
  color: var(--color-text-invert);
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius);
}

.main-nav__list .menu-item-cta a:hover {
  background-color: var(--color-accent-dark);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-navy);
  transition: all 0.3s ease;
}

/* ==========================================================================
   ページヘッダー（下層ページの見出し）
   ========================================================================== */
.page-hero {
  background-color: var(--color-navy);
  color: var(--color-text-invert);
  padding: 3.5rem 0;
  text-align: center;
}

.page-hero h1 {
  color: var(--color-text-invert);
  font-size: 1.9rem;
  margin: 0 0 0.5rem;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  font-size: 0.95rem;
}

/* ==========================================================================
   ホーム ヒーロー
   ========================================================================== */
.hero {
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-text-invert);
  padding: 5rem 0;
}

.hero__inner {
  max-width: 760px;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #9bc1ff;
  background-color: rgba(37, 99, 235, 0.18);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.hero h1 {
  color: var(--color-text-invert);
  font-size: 2.4rem;
  margin: 0 0 1.25rem;
}

.hero p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   セクション
   ========================================================================== */
.section {
  padding: 4.5rem 0;
}

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

.section__head {
  max-width: 640px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section__eyebrow {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.section__title {
  font-size: 1.7rem;
  margin: 0 0 0.75rem;
}

.section__lead {
  color: var(--color-text-muted);
  margin: 0;
}

/* ==========================================================================
   カードグリッド
   ========================================================================== */
.grid {
  display: grid;
  gap: 1.5rem;
}

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

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

.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--color-accent);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  font-size: 1.15rem;
  margin: 0 0 0.75rem;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.94rem;
  margin: 0;
}

/* ==========================================================================
   コンテンツ（固定ページ本文）
   ========================================================================== */
.page-content {
  padding: 4rem 0;
}

.content-narrow {
  max-width: 760px;
  margin: 0 auto;
}

.content-block {
  margin-bottom: 3rem;
}

.content-block:last-child {
  margin-bottom: 0;
}

.content-block h2 {
  font-size: 1.4rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--color-border);
  margin: 0 0 1.25rem;
}

.content-block h3 {
  font-size: 1.1rem;
  margin: 1.75rem 0 0.75rem;
}

.content-block ul {
  padding-left: 1.25rem;
  margin: 0 0 1rem;
}

.content-block li {
  margin-bottom: 0.4rem;
}

/* 定義リスト風の概要テーブル */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  text-align: left;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  font-size: 0.95rem;
}

.info-table th {
  width: 32%;
  background-color: var(--color-bg-alt);
  color: var(--color-navy);
  font-weight: 700;
  white-space: nowrap;
}

/* プロフィール */
.profile {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.profile__photo {
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-bg-alt);
  box-shadow: var(--shadow-sm);
}

.profile__name {
  font-size: 1.5rem;
  margin: 0 0 0.25rem;
}

.profile__role {
  color: var(--color-accent);
  font-weight: 600;
  margin: 0 0 1.25rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.tag-list li {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* サービス フロー（プロセス） */
.process {
  display: grid;
  gap: 1.25rem;
}

.process__step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.25rem;
  align-items: start;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.process__num {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-navy);
  color: var(--color-text-invert);
  border-radius: 50%;
  font-weight: 700;
}

.process__step h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.process__step .term {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
}

.process__step p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin: 0.5rem 0 0;
}

/* 料金 */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.price-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  background-color: var(--color-bg);
}

.price-card h3 {
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.price-card .price {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0.5rem 0;
}

.price-card p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  margin: 0;
}

/* ==========================================================================
   CTA バンド
   ========================================================================== */
.cta-band {
  background-color: var(--color-navy);
  color: var(--color-text-invert);
  text-align: center;
  padding: 4rem 0;
}

.cta-band h2 {
  color: var(--color-text-invert);
  font-size: 1.6rem;
  margin: 0 0 0.75rem;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 2rem;
}

/* ==========================================================================
   お問い合わせフォーム
   ========================================================================== */
.contact-form {
  max-width: 640px;
  margin: 0 auto;
}

.form-row {
  margin-bottom: 1.5rem;
}

.form-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
}

.form-row label .req {
  color: #dc2626;
  font-size: 0.8rem;
  margin-left: 0.35rem;
}

.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg);
}

.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-row textarea {
  min-height: 150px;
  resize: vertical;
}

.form-notice {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
}

.form-notice--success {
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.form-notice--error {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

/* ==========================================================================
   フッター
   ========================================================================== */
.site-footer {
  background-color: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0 2rem;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.site-footer__brand h3 {
  color: var(--color-text-invert);
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.site-footer__brand p {
  font-size: 0.85rem;
  margin: 0;
}

.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.88rem;
}

.footer-nav a:hover {
  color: var(--color-text-invert);
}

.site-footer__copy {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

/* ==========================================================================
   レスポンシブ
   ========================================================================== */
@media (max-width: 860px) {
  .grid--3,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .grid--2 {
    grid-template-columns: 1fr;
  }

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

  .profile__photo {
    max-width: 220px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
  }

  .main-nav__list li {
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav__list a {
    display: block;
    padding: 0.9rem 0;
  }

  .main-nav__list .menu-item-cta a {
    text-align: center;
    margin-top: 0.75rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .info-table th {
    width: 40%;
  }
}