/*
Theme Name: 職人LP ポートフォリオ
Theme URI: https://shokunin-lp.com/
Author: Woz
Author URI: https://shokunin-lp.com/
Description: 自社ポートフォリオサイト(プライマリドメイン shokunin-lp.com)用テーマ。制作会社としての信頼感・洗練さを軸に、電気工事士向け4テーマ(サブドメイン公開)への導線、制作実績、サービス内容・料金プラン、制作の流れ、会社概要、お問い合わせを1ページのLP構成で掲載する。
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Tested up to: 6.6
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: shokunin-lp-portfolio
Tags: business, custom-menu, footer-widgets, responsive-layout, translation-ready

職人LP ポートフォリオ は company/products/portfolio_site.md の実装です。
配色方針: 墨(ほぼ黒)+白+グレーのモノトーン基調に、アクセントカラー(ブルー)を1色のみ使用。
制作会社としての信頼感・洗練さを重視し、電気工事士向けサンプル4テーマ(親しみやすさ重視)とは
明確にトーンを分けている。
*/

/* =========================================================
   0. Design Tokens
   ========================================================= */
:root {
  /* Ink (monotone base) */
  --color-ink-900: #121316;
  --color-ink-800: #1d1f24;
  --color-ink-700: #2c2f36;
  --color-ink-600: #454952;

  /* Neutral */
  --color-white: #ffffff;
  --color-offwhite: #f5f5f4;
  --color-gray-600: #5a5d64;
  --color-gray-400: #9497a0;
  --color-gray-200: #d9dade;
  --color-border: #e4e4e2;

  /* Accent: ブルー1色のみ(信頼感・洗練さの演出) */
  --color-accent: #2b52e0;
  --color-accent-dark: #1c39ad;
  --color-accent-light: #e9edfc;

  /* Type */
  --font-heading: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;

  /* Layout */
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 10px;
  --shadow-card: 0 2px 16px rgba(18, 19, 22, 0.08);
  --transition: 0.2s ease;
}

/* =========================================================
   1. Reset / Base
   ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink-700);
  background: var(--color-white);
  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 var(--transition);
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  color: var(--color-ink-900);
  line-height: 1.4;
  margin: 0 0 0.6em;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
}

button {
  font-family: inherit;
}

table {
  width: 100%;
  border-collapse: collapse;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-ink-900);
  color: var(--color-white);
  padding: 10px 18px;
  z-index: 10000;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
  color: var(--color-white);
}

/* =========================================================
   2. Layout utilities
   ========================================================= */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 64px 0;
}

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

.section--ink {
  background: var(--color-ink-900);
  color: var(--color-gray-200);
}

.section--ink h2,
.section--ink h3 {
  color: var(--color-white);
}

.section-head {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section--ink .section-eyebrow {
  color: var(--color-accent-light);
}

.section-title {
  font-size: 1.9rem;
  margin-bottom: 0.5em;
}

.section-lead {
  color: var(--color-gray-600);
  margin: 0;
}

.section--ink .section-lead {
  color: var(--color-gray-200);
}

/* =========================================================
   3. Buttons
   ========================================================= */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.98rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

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

.btn-primary:hover {
  background: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink-900);
  border-color: var(--color-ink-900);
}

.btn-outline:hover {
  background: var(--color-ink-900);
  color: var(--color-white);
}

.section--ink .btn-outline {
  color: var(--color-white);
  border-color: var(--color-gray-400);
}

.section--ink .btn-outline:hover {
  background: var(--color-white);
  color: var(--color-ink-900);
}

/* =========================================================
   4. Header
   ========================================================= */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 500;
}

.header-main {
  padding: 14px 0;
}

.header-main .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.02em;
}

.site-title a {
  color: var(--color-ink-900);
}

.site-description {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-gray-600);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.menu-toggle .bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-ink-900);
}

.primary-navigation {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.primary-navigation.is-open {
  display: block;
}

.primary-navigation ul {
  display: flex;
  flex-direction: column;
}

.primary-navigation a {
  display: block;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink-800);
  font-weight: 600;
}

.primary-navigation .btn {
  margin: 12px 20px;
}

/* =========================================================
   5. Hero
   ========================================================= */
.hero {
  background: var(--color-ink-900);
  color: var(--color-white);
  padding: 64px 0 56px;
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  background: rgba(43, 82, 224, 0.18);
  border: 1px solid rgba(43, 82, 224, 0.4);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 22px;
}

.hero-title {
  color: var(--color-white);
  font-size: 2.1rem;
  line-height: 1.5;
  margin-bottom: 0.5em;
}

.hero-title .accent {
  color: var(--color-accent-light);
}

.hero-subtitle {
  max-width: 640px;
  margin: 0 auto 32px;
  color: var(--color-gray-200);
  font-size: 1rem;
}

.hero .btn-group {
  justify-content: center;
  margin-bottom: 40px;
}

.hero-samples {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.hero-sample-tag {
  font-size: 0.82rem;
  color: var(--color-gray-200);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 6px 14px;
}

/* =========================================================
   6. 制作実績(ポートフォリオカード)
   ========================================================= */
.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.portfolio-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(18, 19, 22, 0.12);
}

.portfolio-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 160px;
  background: linear-gradient(135deg, var(--color-ink-900), var(--color-ink-700));
  color: var(--color-white);
  text-align: center;
  padding: 16px;
}

.portfolio-thumb-index {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 6px 16px;
}

.portfolio-body {
  padding: 22px 24px 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.portfolio-label {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.portfolio-body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5em;
}

.portfolio-desc {
  color: var(--color-gray-600);
  font-size: 0.92rem;
  flex-grow: 1;
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--color-accent);
}

.portfolio-link:hover {
  color: var(--color-accent-dark);
}

/* =========================================================
   7. サービス内容・料金プラン
   ========================================================= */
.page-content > *:first-child {
  margin-top: 0;
}

.page-content table {
  margin: 1.6em 0;
}

.page-content th,
.page-content td {
  border: 1px solid var(--color-border);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

.page-content thead th {
  background: var(--color-ink-900);
  color: var(--color-white);
}

.page-content ul {
  list-style: none;
  margin: 0 0 1.4em;
  padding: 0;
}

.page-content ul li {
  position: relative;
  padding-left: 1.4em;
  margin-bottom: 0.5em;
}

.page-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.page-content h3 {
  margin-top: 1.6em;
}

/* =========================================================
   8. 制作の流れ
   ========================================================= */
.flow-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  counter-reset: flow-step;
}

.flow-step {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px 24px;
}

.flow-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-ink-900);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: 16px;
}

.flow-step h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5em;
}

.flow-step p {
  color: var(--color-gray-600);
  font-size: 0.92rem;
  margin: 0;
}

.flow-arrow {
  display: none;
}

/* =========================================================
   9. 会社概要
   ========================================================= */
.company-table th,
.company-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 14px 8px;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 9em;
  color: var(--color-gray-600);
  font-weight: 600;
}

/* =========================================================
   10. お問い合わせCTA
   ========================================================= */
.contact-cta {
  background: var(--color-ink-900);
  color: var(--color-white);
  text-align: center;
  padding: 72px 0;
}

.contact-cta h2 {
  color: var(--color-white);
}

.contact-cta .section-lead {
  color: var(--color-gray-200);
  max-width: 560px;
  margin: 0 auto 32px;
}

.contact-email {
  display: inline-block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin-bottom: 8px;
}

.contact-note {
  font-size: 0.85rem;
  color: var(--color-gray-400);
  margin-bottom: 28px;
}

/* =========================================================
   11. Footer
   ========================================================= */
.site-footer {
  background: var(--color-ink-800);
  color: var(--color-gray-200);
}

.footer-main {
  padding: 48px 0 32px;
}

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

.footer-brand .site-title a {
  color: var(--color-white);
}

.footer-brand p {
  color: var(--color-gray-400);
  font-size: 0.9rem;
}

.footer-widget-title {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.footer-nav a,
.footer-widgets a {
  color: var(--color-gray-200);
  font-size: 0.9rem;
}

.footer-nav li,
.footer-widgets li {
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 18px 0;
  font-size: 0.8rem;
  color: var(--color-gray-400);
  text-align: center;
}

/* =========================================================
   12. index.php フォールバック(投稿一覧・検索結果等)
   ========================================================= */
.site-main {
  padding: 56px 0;
}

.page-header {
  margin-bottom: 32px;
}

.entry-card {
  border-bottom: 1px solid var(--color-border);
  padding: 24px 0;
}

.entry-title a {
  color: var(--color-ink-900);
}

.entry-meta {
  color: var(--color-gray-400);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.pagination {
  display: flex;
  gap: 8px;
  margin-top: 32px;
}

.pagination a,
.pagination span {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

/* =========================================================
   13. Responsive breakpoints
   ========================================================= */

/* Tablet (>=768px) */
@media (min-width: 768px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr;
  }

  .hero-title {
    font-size: 2.5rem;
  }
}

/* Desktop (>=1024px) */
@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }

  .primary-navigation {
    display: block;
    position: static;
    border-top: none;
    box-shadow: none;
    background: transparent;
  }

  .primary-navigation ul {
    flex-direction: row;
    align-items: center;
    gap: 4px;
  }

  .primary-navigation a {
    border-bottom: none;
    padding: 10px 14px;
    font-size: 0.92rem;
  }

  .primary-navigation .btn {
    margin: 0 0 0 8px;
  }

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

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

  .section {
    padding: 96px 0;
  }

  .hero {
    padding: 120px 0 96px;
  }

  .hero-title {
    font-size: 3rem;
  }

  .section-title {
    font-size: 2.2rem;
  }
}