/*
Theme Name: AI Tanoshikatta
Theme URI: https://ai-tanoshikatta.jp
Author: Simiri
Description: Editorial AI news theme — bold gothic, cream newsprint aesthetic
Version: 1.0.0
Tags: news, minimal, bold
*/

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:     #E8E0CC;
  --white:  #EDE6D5;
  --ink:    #1A1510;
  --mid:    #7A7060;
  --border: #CFC8B4;
  --pink:   #F0286A;
  --purple: #7730E8;
  --grad:   linear-gradient(110deg, #F0286A, #7730E8);
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background-color: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

#grain-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.35;
  mix-blend-mode: multiply;
  transition: opacity 0.5s ease;
}

/* ── READABLE MODE ── */
body.readable { background-color: #FFFFFF; }
body.readable #grain-canvas { opacity: 0; }
body.readable header { background: rgba(255,255,255,0.96); }
body.readable .sb-topics,
body.readable .sb-stat { background: #f7f7f7; }

/* ── READABLE TOGGLE BUTTON ── */
.readable-btn {
  font-family: 'Outfit', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--mid);
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 5px 13px;
  cursor: pointer;
  transition: all 0.2s;
}
.readable-btn:hover { border-color: var(--ink); color: var(--ink); }
body.readable .readable-btn { border-color: var(--pink); color: var(--pink); }

/* ── HEADER ── */
header {
  background: rgba(232, 224, 204, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--ink);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 7px 16px 8px;
  display: inline-flex;
  align-items: center;
  line-height: 1;
  transition: opacity 0.15s;
}
.logo:hover { opacity: 0.65; }

nav { display: flex; gap: 32px; align-items: center; }

nav a {
  font-family: 'Outfit', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--mid);
  text-decoration: none;
  transition: color 0.15s;
}
nav a:hover { color: var(--ink); }

/* ── HERO ── */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 52px 40px 0;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0 48px;
  align-items: start;
}

.hero-main { min-width: 0; }

.hero-vol {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 20px;
}

.hero-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: clamp(44px, 5.8vw, 82px);
  line-height: 0.88;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.hero-title-grad {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline-block {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  padding-bottom: 32px;
}

.hero-tagline {
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: var(--mid);
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.hero-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding-top: 4px;
}

.hero-date-big {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: clamp(72px, 10vw, 120px);
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: var(--ink);
  text-align: right;
}

.hero-date-sub {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  text-align: right;
  margin-top: 8px;
}

/* ── MAIN LAYOUT ── */
.main-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0 48px;
  align-items: start;
}

/* ── ARTICLE LIST ── */
.article-list { padding-top: 0; }

.row {
  display: grid;
  grid-template-columns: 60px 1fr 28px;
  gap: 0 24px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--ink);
  position: relative;
}

.row::before {
  content: '';
  position: absolute;
  left: -40px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--grad);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.row:hover::before { transform: scaleY(1); }

.row-featured {
  border-top: 2px solid var(--ink);
  padding: 36px 0;
}

.row-date {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding-top: 2px;
}

.row-day {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 36px;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.row-featured .row-day { font-size: 44px; }

.row-mon {
  font-family: 'Outfit', sans-serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
  margin-top: 4px;
}

.row-body { min-width: 0; }

.row-tag {
  font-family: 'Outfit', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 10px;
}
.tag-pink   { color: var(--pink); }
.tag-purple { color: var(--purple); }

.row-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--ink);
  transition: color 0.2s;
}
.row-title-lg { font-size: 22px; }
.row:hover .row-title { color: var(--pink); }

.row-excerpt {
  font-size: 12px;
  font-weight: 400;
  color: var(--mid);
  line-height: 1.8;
  margin-top: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.row-arrow {
  font-family: 'Outfit', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--border);
  padding-top: 4px;
  transition: all 0.2s;
  align-self: center;
}
.row:hover .row-arrow { color: var(--ink); transform: translateX(3px); }

/* ── SINGLE POST ── */
.single-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 52px 40px 80px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0 48px;
  align-items: start;
}

.single-header {
  border-top: 2px solid var(--ink);
  padding-top: 36px;
  margin-bottom: 40px;
}

.single-tag {
  font-family: 'Outfit', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pink);
  margin-bottom: 16px;
}

.single-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 900;
  font-size: clamp(28px, 3.5vw, 44px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 20px;
}

.single-meta {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--mid);
}

.single-body {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink);
}

.single-body p { margin-bottom: 1.5em; }
.single-body h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 700;
  font-size: 20px;
  margin: 2.5em 0 1em;
  border-left: 4px solid;
  border-image: var(--grad) 1;
  padding-left: 14px;
}
.single-body h3 {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 700;
  font-size: 17px;
  margin: 2em 0 0.8em;
  color: var(--ink);
}
.single-body a { color: var(--pink); text-decoration: underline; }
.single-body blockquote {
  border-left: 3px solid var(--border);
  padding: 12px 20px;
  margin: 1.5em 0;
  color: var(--mid);
  font-style: normal;
}

/* ── SIDEBAR ── */
.sidebar {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
}

.sb-nl {
  background: var(--ink);
  padding: 28px 24px;
}

.sb-topics {
  background: rgba(237, 230, 213, 0.6);
  padding: 22px 24px;
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.sb-stat {
  background: rgba(237, 230, 213, 0.6);
  padding: 22px 24px;
  border-left: 1px solid var(--border);
}

.lbl {
  font-family: 'Outfit', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid);
}

.stat-num {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 64px;
  line-height: 0.85;
  letter-spacing: -0.04em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 10px 0 4px;
}

.stat-lbl {
  font-family: 'Outfit', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 8px;
}

.nl-head {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 8px;
}

.nl-sub {
  font-size: 11px;
  font-weight: 400;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  margin-bottom: 18px;
}

.nl-row { display: flex; gap: 6px; }

.nl-in {
  flex: 1;
  background: rgba(255,255,255,0.1);
  border: 1.5px solid rgba(255,255,255,0.18);
  border-radius: 3px;
  padding: 9px 12px;
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  color: #fff;
  outline: none;
  transition: border-color 0.2s;
  min-width: 0;
}
.nl-in::placeholder { color: rgba(255,255,255,0.2); }
.nl-in:focus { border-color: rgba(255,255,255,0.45); }

.nl-btn {
  background: var(--grad);
  border: none;
  border-radius: 3px;
  padding: 9px 14px;
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s;
}
.nl-btn:hover { opacity: 0.8; }

.chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 12px; }

.chip {
  font-family: 'Outfit', sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--mid);
  border: 1.5px solid var(--border);
  padding: 4px 11px;
  border-radius: 2px;
  text-decoration: none;
  transition: all 0.15s;
}
.chip:hover { border-color: var(--ink); color: var(--ink); }

/* ── FOOTER ── */
.footer-wrap { border-top: 2px solid var(--ink); }

footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ft-logo {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 5px 13px 6px;
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.ft-copy {
  font-family: 'Outfit', sans-serif;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--mid);
}

/* ── ANIMATE ── */
.article-list {
  opacity: 0;
  animation: fadeIn 0.4s ease 0.1s forwards;
}
.sidebar {
  opacity: 0;
  animation: fadeIn 0.4s ease 0.2s forwards;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero,
  .main-layout,
  .single-layout {
    grid-template-columns: 1fr;
    padding: 32px 20px 0;
  }
  .main-layout { padding-bottom: 48px; }
  .hero-right { flex-direction: row; align-items: baseline; gap: 12px; margin-top: 24px; }
  .hero-date-big { font-size: 56px; }
  .sidebar { position: static; margin-top: 40px; }
  .header-inner { padding: 0 20px; }
  nav a:not(:last-child):not(.readable-btn) { display: none; }
}