/*
Theme Name: Bijutsu Shisui Theme
Description: 美術紫水 公式サイトテーマ。ハート×VHS/オシロスコープ×テイクオーバー演出をベースとした世界観。
Version: 1.3.0
Author: Bijutsu Shisui
Text Domain: bijutsushisui
*/

:root{
  --bs-bg: #0a0a0c;
  --bs-bg-elevated: #121216;
  --bs-fg: #ececec;
  --bs-fg-dim: #9a9aa0;
  --bs-heart-primary: #ff2f6e;
  --bs-heart-secondary: #37f2e6;
  --bs-glitch-accent: #ffe14d;
  --bs-border: rgba(255,255,255,0.14);
  --bs-header-bg: rgba(10,10,12,0.92);

  --bs-font-display: "Share Tech Mono", monospace;
  --bs-font-jp-dot: "DotGothic16", sans-serif;
  --bs-font-body: "Shippori Mincho", serif;
}

*{ box-sizing: border-box; }

html,body{
  margin:0;
  padding:0;
  background: var(--bs-bg);
  color: var(--bs-fg);
  font-family: var(--bs-font-body);
  -webkit-font-smoothing: antialiased;
}

body{
  min-height: 100vh;
  overflow-x: hidden;
}

a{ color: inherit; text-decoration: none; }

/* ---------- Header ---------- */
.bs-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bs-header-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--bs-border);
  padding-top: env(safe-area-inset-top);
  padding-right: env(safe-area-inset-right);
  padding-left: env(safe-area-inset-left);
  padding-bottom: 0;
}

.bs-header__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  padding-left: 20px;
  padding-right: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.bs-logo{
  font-family: var(--bs-font-display);
  letter-spacing: 0.08em;
  font-size: 15px;
}

.bs-nav{
  display:flex;
  gap: 22px;
  flex-wrap: wrap;
  font-family: var(--bs-font-jp-dot);
  font-size: 12px;
}

.bs-nav a{ opacity:.78; transition: opacity .2s; }
.bs-nav a:hover{ opacity:1; }

@media (max-width: 640px){
  .bs-header__inner{ padding-top: 12px; padding-bottom: 12px; }
  .bs-header{ padding-top: env(safe-area-inset-top); }
  .bs-nav{ gap: 14px; font-size: 11px; }
}

/* ---------- Takeover background ---------- */
#bs-takeover-canvas{
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100vw;
  height: 100vh;
  display:block;
}

.bs-content-wrap{
  position: relative;
  z-index: 1;
}

.bs-scanlines{
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.03) 0px,
    rgba(255,255,255,0.03) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

.bs-vignette{
  position: fixed;
  inset: 0;
  z-index: 39;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.55) 100%);
}

/* ---------- Hero ---------- */
.bs-hero{
  max-width: 1100px;
  margin: 0 auto;
  padding: 14vh 20px 10vh;
  text-align: center;
}

.bs-hero__eyebrow{
  font-family: var(--bs-font-display);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--bs-heart-secondary);
  margin-bottom: 18px;
}

.bs-hero__title{
  font-family: var(--bs-font-jp-dot);
  font-size: clamp(32px, 7vw, 64px);
  line-height: 1.35;
  margin: 0 0 20px;
  letter-spacing: 0.04em;
}

.bs-hero__lead{
  font-family: var(--bs-font-body);
  font-size: 15px;
  line-height: 1.9;
  color: var(--bs-fg-dim);
  max-width: 560px;
  margin: 0 auto;
}

/* ---------- Section cards (nav to sub-pages) ---------- */
.bs-cards{
  max-width: 1100px;
  margin: 0 auto;
  padding: 4vh 20px 14vh;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.bs-card{
  border: 1px solid var(--bs-border);
  background: linear-gradient(180deg, var(--bs-bg-elevated), rgba(18,18,22,0.4));
  padding: 26px 22px;
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  transition: border-color .25s, transform .25s;
}

.bs-card:hover{
  border-color: var(--bs-heart-primary);
  transform: translateY(-2px);
}

.bs-card__index{
  font-family: var(--bs-font-display);
  font-size: 11px;
  color: var(--bs-heart-secondary);
  letter-spacing: 0.15em;
}

.bs-card__title{
  font-family: var(--bs-font-jp-dot);
  font-size: 18px;
  margin: 10px 0 8px;
}

.bs-card__desc{
  font-family: var(--bs-font-body);
  font-size: 13px;
  color: var(--bs-fg-dim);
  line-height: 1.8;
}

/* ---------- Buttons (oscilloscope style) ---------- */
.bs-btn{
  display:inline-block;
  font-family: var(--bs-font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 12px 26px;
  border: 1px solid var(--bs-heart-secondary);
  color: var(--bs-heart-secondary);
  position: relative;
  background: transparent;
}

.bs-btn:hover{
  background: var(--bs-heart-secondary);
  color: var(--bs-bg);
}

/* ---------- Signal blocks (front page primary links) ---------- */
.bs-signals-eyebrow{
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  font-family: var(--bs-font-display);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--bs-fg-dim);
}

.bs-signals-stage{
  position: relative;
  max-width: 1100px;
  margin: 12px auto 0;
  height: 46vh;
  min-height: 320px;
}

.bs-signal{
  position: absolute;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: filter .3s;
}

.bs-signal__pulse{
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.bs-signal__eyebrow{
  font-family: var(--bs-font-display);
  font-size: 9px;
  letter-spacing: 0.15em;
  opacity: 0.85;
}

.bs-signal__title{
  font-family: var(--bs-font-jp-dot);
  font-size: 22px;
  color: var(--bs-fg);
}

.bs-signal__meta{
  font-family: var(--bs-font-body);
  font-size: 11px;
  color: var(--bs-fg-dim);
  margin-top: 2px;
}

/* ---------- Secondary links (auxiliary pages) ---------- */
.bs-secondary-links{
  max-width: 1100px;
  margin: 0 auto;
  padding: 4vh 20px 14vh;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.bs-secondary-links a{
  font-family: var(--bs-font-body);
  font-size: 12px;
  color: var(--bs-fg-dim);
  border: 1px solid var(--bs-border);
  padding: 8px 16px;
  transition: color .2s, border-color .2s;
}

.bs-secondary-links a:hover{
  color: var(--bs-fg);
  border-color: var(--bs-heart-secondary);
}

/* ---------- Fixed page (page.php) ---------- */
.bs-page{
  max-width: 760px;
  margin: 0 auto;
  padding: 10vh 20px 14vh;
}

.bs-page--effect-front .bs-page__article{
  background: var(--bs-bg-elevated);
  border: 1px solid var(--bs-border);
  padding: 40px 32px;
}

.bs-page__title{
  font-family: var(--bs-font-jp-dot);
  font-size: clamp(24px, 5vw, 34px);
  letter-spacing: 0.04em;
  margin: 0 0 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--bs-border);
}

.bs-page__content{
  font-family: var(--bs-font-body);
  font-size: 15px;
  line-height: 2.1;
  color: var(--bs-fg);
}

.bs-page__content p{ margin: 0 0 1.6em; }
.bs-page__content h2{
  font-family: var(--bs-font-jp-dot);
  font-size: 19px;
  margin: 2.4em 0 1em;
  color: var(--bs-heart-secondary);
}
.bs-page__content h3{
  font-family: var(--bs-font-jp-dot);
  font-size: 16px;
  margin: 2em 0 0.8em;
}
.bs-page__content a{
  color: var(--bs-heart-secondary);
  border-bottom: 1px solid currentColor;
}
.bs-page__content img{ max-width: 100%; height: auto; }

/* ---------- Footer ---------- */
.bs-footer{
  border-top: 1px solid var(--bs-border);
  padding: 30px 20px;
  padding-bottom: calc(30px + env(safe-area-inset-bottom));
  text-align:center;
  font-family: var(--bs-font-display);
  font-size: 11px;
  color: var(--bs-fg-dim);
  letter-spacing: 0.1em;
}