/*
Theme Name: k-sen
Theme URI: 
Author: Katsura Yuki
Author URI: https://k-sen.jp
Description: 企画・編集・Webマーケティングを横断するプランナー向けポートフォリオテーマ。生成りの方眼罫線と明朝×ゴシックの組み合わせで、資料感と雑誌感の中間を目指した「編集者のノート」のようなデザイン。
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: k-sen
*/

/* ==========================================================================
   0. Design Tokens
   ========================================================================== */
:root {
  /* Color */
  --color-bg: #F7F5F0;         /* 生成り */
  --color-bg-card: #FCFBF8;    /* カード用にわずかに明るく */
  --color-text: #1F2933;       /* 濃いネイビーグレー */
  --color-text-soft: #5B6570;  /* 本文の弱色 */
  --color-accent: #9A6B3F;     /* ブラウンゴールド */
  --color-accent-soft: #B98A5E;
  --color-sub: #D8D2C4;        /* 薄いグレージュ */
  --color-line: rgba(31, 41, 51, 0.09);   /* 方眼罫線 */
  --color-line-strong: rgba(31, 41, 51, 0.16);

  /* Type */
  --font-display: "Shippori Mincho", "Noto Serif JP", serif;
  --font-body: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
  --font-utility: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;

  /* Layout */
  --grid-size: 32px;
  --content-width: 1120px;
  --content-width-narrow: 760px;
  --section-pad: clamp(72px, 10vw, 128px);
}

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

body {
  margin: 0;
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; margin: 0; }
p { margin: 0 0 1em; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }

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

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

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

.section { padding: var(--section-pad) 0; position: relative; }
.section + .section { border-top: 1px solid var(--color-line-strong); }

/* eyebrow / marginalia label (編集者の付箋のようなラベル) */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-utility);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--color-accent);
}

.section-title {
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}
.section-lead {
  color: var(--color-text-soft);
  font-size: 15px;
  max-width: 640px;
  margin-bottom: 48px;
}

/* ==========================================================================
   2. Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-utility);
  font-size: 14px;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-text);
  border-radius: 999px;
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}
.btn:hover { background: var(--color-text); color: var(--color-bg); }

.btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.btn--primary:hover { background: var(--color-text); border-color: var(--color-text); color: var(--color-bg); }

.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ==========================================================================
   3. Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 240, 0.88);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line-strong);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  max-width: var(--content-width);
  margin: 0 auto;
}
.site-logo {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.06em;
}
.site-logo span { color: var(--color-accent); }

.main-nav ul { display: flex; gap: 36px; }
.main-nav a {
  font-family: var(--font-utility);
  font-size: 13px;
  letter-spacing: 0.1em;
  position: relative;
  padding-bottom: 4px;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--color-accent);
  transition: right .25s ease;
}
.main-nav a:hover::after, .main-nav a.is-active::after { right: 0; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-text);
  border-radius: 999px;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
}

@media (max-width: 780px) {
  .site-header {
    backdrop-filter: none;
    background: var(--color-bg);
  }

  .main-nav {
    position: fixed;
    inset: 72px 0 0 0;
    background: var(--color-bg);
    z-index: 60;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all .25s ease;
  }
  .main-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 12px 24px; }
  .main-nav li { border-bottom: 1px solid var(--color-line-strong); }
  .main-nav a { display: block; padding: 18px 0; }
  .nav-toggle { display: inline-flex; }
}

/* ==========================================================================
   4. Hero
   ========================================================================== */
.hero {
  padding: clamp(80px, 12vw, 140px) 0 var(--section-pad);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}
.hero__copy h1 {
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.6;
  letter-spacing: 0.02em;
  text-wrap: balance;
}
.hero__lead {
  margin-top: 28px;
  max-width: 560px;
  color: var(--color-text-soft);
  font-size: 15px;
  line-height: 2;
}
.hero__mark {
  font-family: var(--font-display);
  writing-mode: vertical-rl;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--color-accent-soft);
  border-left: 1px solid var(--color-line-strong);
  padding-left: 16px;
  height: 160px;
  display: flex;
  align-items: flex-end;
}
.hero__actions { margin-top: 40px; }

@media (max-width: 600px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__mark {
    display: none;
  }
  .hero__copy h1 {
    font-size: clamp(24px, 7vw, 32px);
  }
}
/* ==========================================================================
   5. What I Do
   ========================================================================== */
.do-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--color-line-strong);
  border: 1px solid var(--color-line-strong);
}
.do-item {
  background: var(--color-bg);
  padding: 32px 26px;
  transition: background-color .25s ease;
}
.do-item:hover { background: var(--color-bg-card); }
.do-item__num {
  font-family: var(--font-utility);
  font-size: 12px;
  color: var(--color-accent);
  letter-spacing: 0.1em;
}
.do-item__title {
  margin-top: 14px;
  font-size: 17px;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   6. Works
   ========================================================================== */
.work-list { display: grid; gap: 1px; background: var(--color-line-strong); border: 1px solid var(--color-line-strong); }
.work-card {
  background: var(--color-bg-card);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  padding: 40px;
}
.work-card__thumb {
  aspect-ratio: 4 / 3;
  background: var(--color-sub);
  overflow: hidden;
}
.work-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.work-card__cat {
  font-family: var(--font-utility);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.work-card__title { font-size: 21px; margin-bottom: 14px; }
.work-card__excerpt { color: var(--color-text-soft); font-size: 14px; margin-bottom: 18px; }
.work-card__link {
  font-family: var(--font-utility);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
}

@media (max-width: 720px) {
  .work-card { grid-template-columns: 1fr; }
}

/* Work detail (single) */
.work-meta-table { width: 100%; border-collapse: collapse; margin: 40px 0; }
.work-meta-table th, .work-meta-table td {
  text-align: left;
  vertical-align: top;
  padding: 20px 0;
  border-top: 1px solid var(--color-line-strong);
  font-size: 14px;
}
.work-meta-table th {
  width: 160px;
  font-family: var(--font-utility);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  font-weight: 500;
}
.work-meta-table tr:last-child td, .work-meta-table tr:last-child th { border-bottom: 1px solid var(--color-line-strong); }

/* ==========================================================================
   7. Process
   ========================================================================== */
.process-list { counter-reset: step; border-top: 1px solid var(--color-line-strong); }
.process-item {
  counter-increment: step;
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--color-line-strong);
}
.process-item::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--color-accent);
}
.process-item__title { font-size: 16px; margin-bottom: 6px; letter-spacing: 0.02em; }
.process-item__desc { color: var(--color-text-soft); font-size: 14px; margin: 0; }
/* Career（経歴） */
.career-list { border-top: 1px solid var(--color-line-strong); }
.career-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--color-line-strong);
}
.career-item__year {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.career-item__desc {
  color: var(--color-text-soft);
  font-size: 14px;
  margin: 0;
}

@media (max-width: 560px) {
  .career-item { grid-template-columns: 1fr; gap: 8px; }
}
/* ==========================================================================
   8. Service
   ========================================================================== */
.service-list { display: flex; flex-direction: column; }
.service-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
  padding: 44px 0;
  border-top: 1px solid var(--color-line-strong);
}
.service-item:last-child { border-bottom: 1px solid var(--color-line-strong); }
.service-item__num { font-family: var(--font-display); font-size: 30px; color: var(--color-sub); }
.service-item__title { font-size: 20px; margin-bottom: 12px; }
.service-item__desc { color: var(--color-text-soft); font-size: 14px; margin-bottom: 20px; }
.service-item__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-item__tags span {
  font-family: var(--font-utility);
  font-size: 12px;
  padding: 5px 12px;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  color: var(--color-text-soft);
}

/* ==========================================================================
   9. About
   ========================================================================== */
.about-layout { display: grid; grid-template-columns: 280px 1fr; gap: 64px; }
.about-photo { aspect-ratio: 3/4; background: var(--color-sub); }
.about-photo img { width: 100%; height: 100%; object-fit: cover; }
.about-role { font-family: var(--font-display); font-size: 20px; margin-bottom: 24px; line-height: 1.7; }
.about-body p { color: var(--color-text-soft); font-size: 15px; }
@media (max-width: 780px) { .about-layout { grid-template-columns: 1fr; } }

/* ==========================================================================
   10. Contact
   ========================================================================== */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }
.contact-checklist { list-style: none; padding: 0; margin: 24px 0 0; }
.contact-checklist li {
  padding: 14px 0;
  border-top: 1px solid var(--color-line-strong);
  font-size: 14px;
  color: var(--color-text-soft);
}
.contact-checklist li:last-child { border-bottom: 1px solid var(--color-line-strong); }

.form-row { margin-bottom: 22px; }
.form-row label {
  display: block;
  font-family: var(--font-utility);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 8px;
}
.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-line-strong);
  border-radius: 4px;
}
.form-row textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: 12px; color: var(--color-text-soft); margin-top: -8px; margin-bottom: 22px; }
.form-success { padding: 20px; border: 1px solid var(--color-accent); color: var(--color-accent); border-radius: 4px; margin-bottom: 24px; font-size: 14px; }
.form-error { padding: 20px; border: 1px solid #b3413a; color: #b3413a; border-radius: 4px; margin-bottom: 24px; font-size: 14px; }

@media (max-width: 780px) { .contact-layout { grid-template-columns: 1fr; } }

/* ==========================================================================
   11. Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-line-strong);
  padding: 56px 0 32px;
}
.footer-cta { text-align: center; margin-bottom: 56px; }
.footer-cta .section-title { margin-bottom: 28px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-utility);
  font-size: 12px;
  color: var(--color-text-soft);
  letter-spacing: 0.05em;
}
.footer-nav ul { display: flex; gap: 20px; flex-wrap: wrap; }

/* ==========================================================================
   12. Utility
   ========================================================================== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.screen-reader-text {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px); white-space: nowrap;
}