/*
Theme Name: pHMath Hafif Anasayfa V014
Theme URI: https://www.phmath.com.tr/
Author: pHmath
Description: Hafif, hızlı, SEO uyumlu pHMath ana sayfa teması; arama, Alt Menü ve tekil yazı öne çıkan görsel desteği içerir.
Version: 0.1.4
Text Domain: phmath-light
*/

:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#141821;
  --muted:#687080;
  --line:#e7e9ef;
  --accent:#2457d6;
  --accent-soft:#eef3ff;
  --dark:#111827;
  --radius:18px;
  --shadow:0 8px 24px rgba(17,24,39,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-gutter:stable}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Arial,sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto}
picture{display:block;max-width:100%}
.entry-content img{height:auto}
.entry-content iframe,.entry-content video{max-width:100%}
.entry-content{overflow-wrap:anywhere}
.entry-content table{display:block;max-width:100%;overflow-x:auto}
.container{width:min(1180px,calc(100% - 32px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:999999;overflow:visible;background:#fff;border-bottom:1px solid var(--line);height:69px;min-height:69px}
.header-row{height:68px;min-height:68px;display:flex;align-items:center;gap:22px;overflow:visible}
.brand{font-weight:850;font-size:1.28rem;line-height:1;letter-spacing:-.02em;white-space:nowrap}
.brand span{color:var(--accent)}
.main-nav{margin-left:auto;position:relative;overflow:visible;z-index:1000000}
.main-nav ul{display:flex;gap:4px;list-style:none;padding:0;margin:0;align-items:center;overflow:visible}
.main-nav li{position:relative;overflow:visible}
.main-nav a{display:block;padding:10px 12px;border-radius:10px;font-size:.95rem;font-weight:650}
.main-nav a:hover,.main-nav a:focus{background:var(--accent-soft)}
.main-nav .sub-menu{display:block;visibility:hidden;opacity:0;pointer-events:none;position:absolute;top:calc(100% - 2px);left:0;z-index:1000001;min-width:230px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:7px;box-shadow:0 14px 34px rgba(17,24,39,.14);transition:opacity .12s ease,visibility .12s ease}
.main-nav .sub-menu li{width:100%}
.main-nav .sub-menu a{padding:10px 12px;border-radius:8px;font-size:.9rem;white-space:normal}
.main-nav .menu-item-has-children:hover > .sub-menu,.main-nav .menu-item-has-children:focus-within > .sub-menu,.main-nav .menu-item-has-children.menu-hover-open > .sub-menu{visibility:visible;opacity:1;pointer-events:auto}
.main-nav .sub-menu .sub-menu{top:-7px;left:calc(100% - 2px)}
/* Sağ kenara yakın menüler ekrandan taşmasın. */
.main-nav .sub-menu.root-open-left{left:auto!important;right:0!important}
.main-nav .sub-menu.open-left{left:auto!important;right:calc(100% - 2px)!important}
.main-nav .sub-menu.open-right{left:calc(100% - 2px)!important;right:auto!important}
@media (min-width:701px){
  .main-nav > ul > .menu-item-has-children::after{content:"";position:absolute;left:0;right:0;top:100%;height:10px;z-index:1000000}
  .main-nav .sub-menu > .menu-item-has-children::after{content:"";position:absolute;top:0;bottom:0;left:100%;width:10px;z-index:1000000}
  .main-nav .sub-menu > .menu-item-has-children.open-left-parent::after{left:auto;right:100%}
}
.submenu-toggle{display:none;width:36px;height:36px;flex:0 0 36px;border:0;background:transparent;color:var(--muted);font-size:1rem;line-height:1;cursor:pointer;padding:0;border-radius:8px}
.submenu-toggle:hover,.submenu-toggle:focus{background:var(--accent-soft);color:var(--accent)}
.menu-toggle{display:none;width:42px;height:42px;flex:0 0 42px;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:10px;padding:0;font-size:1.15rem;line-height:1;cursor:pointer}
.site-main{padding:26px 0 36px}
.section-kicker{font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-weight:800;margin-bottom:10px}
.latest-strip{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:24px}
.latest-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.latest-item{background:#fff;padding:15px 14px;min-height:92px}
.latest-item .num{display:block;font-size:.8rem;color:var(--muted);margin-bottom:6px}
.latest-item h3{font-size:.96rem;line-height:1.35;margin:0;font-weight:760}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.main-column{min-width:0}
.headline-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.headline-item{padding:28px 30px;border-bottom:1px solid var(--line)}
.headline-item:last-child{border-bottom:0}
.headline-item:first-child{background:linear-gradient(135deg,#fff 0%,#f7f9ff 100%)}
.meta{display:flex;flex-wrap:wrap;gap:8px 12px;color:var(--muted);font-size:.82rem;margin-bottom:9px}
.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:750}
.headline-item h2{margin:0;letter-spacing:-.025em;line-height:1.12;font-size:clamp(1.6rem,3.2vw,2.65rem);font-weight:880}
.headline-item:not(:first-child) h2{font-size:clamp(1.25rem,2vw,1.65rem)}
.headline-item p{margin:10px 0 0;color:#4e5666;font-size:.96rem;max-width:75ch}
.after-headlines{margin-top:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px 24px}
.list-item{display:grid;grid-template-columns:46px minmax(0,1fr);gap:14px;padding:19px 0;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:0}
.list-index{font-size:1.55rem;color:#677181;font-weight:850;line-height:1}
.list-item h3{margin:0;font-size:1.12rem;line-height:1.35}
.list-item p{margin:6px 0 0;color:var(--muted);font-size:.9rem}
.sidebar{display:grid;gap:18px}
.widget{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:19px}
.widget h2{font-size:1rem;margin:0 0 12px;padding-bottom:11px;border-bottom:2px solid var(--dark);letter-spacing:.02em}
.widget-list{list-style:none;padding:0;margin:0}
.widget-list li{padding:10px 0;border-bottom:1px solid var(--line)}
.widget-list li:last-child{border-bottom:0}
.widget-list a{display:block;font-weight:680;line-height:1.35;font-size:.92rem}
.widget-list .small{display:block;color:var(--muted);font-size:.8rem;margin-top:4px}
.footer-links-wrap{margin-top:26px}
.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.footer-link{background:var(--dark);color:#fff!important;border-radius:14px;padding:17px 18px;font-weight:760;text-align:center;transition:.18s transform,.18s opacity}
.footer-link:hover{transform:translateY(-2px);opacity:.94;color:#fff}
.site-footer{border-top:1px solid var(--line);padding:24px 0 34px;background:#fff;color:var(--muted);font-size:.86rem}
.footer-row{display:flex;justify-content:space-between;gap:20px;align-items:center}
.empty-note{color:var(--muted);font-size:.9rem}
.archive-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:14px}
.archive-card h2{margin:0 0 8px}
.archive-card h3{margin:0 0 8px;font-size:1.2rem;line-height:1.4}
.archive-card p{margin:0;color:var(--muted)}
.archive-title,.older-posts h2{font-size:clamp(1.5rem,3vw,2rem);line-height:1.2;margin:0 0 22px}
.phmath-pagination{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:28px 0 4px}
.phmath-pagination .page-numbers{display:inline-flex;min-width:44px;min-height:44px;align-items:center;justify-content:center;padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:9px;font-weight:700}
.phmath-pagination .current{background:var(--dark);color:#fff}
.phmath-pagination a:hover,.phmath-pagination a:focus-visible{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:2px}
.single-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,4vw,42px);box-shadow:var(--shadow)}
.single-wrap > .meta{margin-bottom:4px}
.phmath-breadcrumb{font-size:.82rem;line-height:1.5;color:#606b7a;margin:0 0 12px}
.phmath-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 7px;list-style:none;margin:0;padding:0}
.phmath-breadcrumb li{min-width:0}
.phmath-breadcrumb li + li::before{content:"›";margin-right:7px;color:#8993a3}
.phmath-breadcrumb a{text-decoration:underline;text-decoration-color:#a5adba;text-underline-offset:3px}
.phmath-breadcrumb a:hover,.phmath-breadcrumb a:focus-visible{color:var(--accent);text-decoration-color:currentColor}
.phmath-breadcrumb [aria-current="page"] span{display:inline-block;max-width:min(66vw,42ch);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}
.single-wrap h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.08;margin-top:0;letter-spacing:-.035em}
.entry-content{font-size:1.02rem}
@media (max-width:900px){
  .content-grid{grid-template-columns:1fr}
  .sidebar{grid-template-columns:repeat(3,1fr)}
  .latest-grid{grid-template-columns:repeat(2,1fr)}
  .latest-item:last-child{grid-column:1/-1}
  .footer-links{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:700px){
  .container{width:min(100% - 20px,1180px)}
  .menu-toggle{display:block}
  .main-nav{display:none;position:absolute;left:10px;right:10px;top:64px;max-height:calc(100vh - 80px);max-height:calc(100dvh - 80px);overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:var(--shadow)}
  .main-nav.is-open{display:block}
  .main-nav ul{display:block}
  .main-nav li{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center}
  .main-nav a{padding:12px}
  .main-nav .sub-menu{display:none;visibility:visible;opacity:1;pointer-events:auto;position:static;grid-column:1/-1;min-width:0;margin:0 0 4px 12px;padding:4px 0 4px 8px;border:0;border-left:2px solid var(--line);border-radius:0;box-shadow:none;background:transparent;transition:none}
  .main-nav .sub-menu .sub-menu{position:static;margin-left:12px}
  .main-nav .menu-item-has-children:hover > .sub-menu,.main-nav .menu-item-has-children:focus-within > .sub-menu{display:none}
  .main-nav .menu-item-has-children.submenu-open > .sub-menu{display:block}
  .submenu-toggle{display:inline-flex;align-items:center;justify-content:center;margin-right:6px}
  .submenu-toggle[aria-expanded="true"]{transform:rotate(180deg)}
  .latest-grid{grid-template-columns:1fr}
  .latest-item:last-child{grid-column:auto}
  .headline-item{padding:22px 20px}
  .after-headlines{padding:4px 18px}
  .sidebar{grid-template-columns:1fr}
  .footer-links{grid-template-columns:1fr 1fr}
  .footer-row{display:block}
}

/* Tekil yazı altı gezinme: ana sayfadaki 3 bölüm + hızlı bağlantılar */
.single-bottom-nav{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin:28px 0 34px;
  padding-top:22px;
  border-top:1px solid #e7e9ee;
}
.single-bottom-card{
  min-width:0;
  padding:18px;
  border:1px solid #e6e8ee;
  border-radius:14px;
  background:#fff;
  box-shadow:0 6px 18px rgba(27,39,51,.04);
}
.single-bottom-card h2{
  margin:0 0 12px;
  font-size:16px;
  line-height:1.25;
}
.single-bottom-card ul{
  list-style:none;
  margin:0;
  padding:0;
}
.single-bottom-card li{
  margin:0;
  padding:9px 0;
  border-bottom:1px solid #eef0f4;
  font-size:13px;
  line-height:1.35;
}
.single-bottom-card li:last-child{border-bottom:0;padding-bottom:0}
.single-bottom-card a{text-decoration:none;color:inherit}
.single-bottom-card a:hover{text-decoration:underline}
.quick-links-card a{font-weight:700}
@media (max-width:900px){
  .single-bottom-nav{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:560px){
  .single-bottom-nav{grid-template-columns:1fr;gap:12px;margin-top:22px;}
}

/* V006: daha kararlı ilk yerleşim ve erişilebilir odak */
.main-nav a:focus-visible,.footer-link:focus-visible,.single-bottom-card a:focus-visible{outline:3px solid #173f9f;outline-offset:2px}
.latest-item,.headline-item,.list-item,.widget,.single-bottom-card{contain:layout style paint}


/* V007 CLS korumaları (web.dev önerilerine göre)
 * - Medya yüklenmeden önce boyut alanı HTML width/height ile ayrılır (functions.php).
 * - Video yerleştirmeleri 16:9 alan ayıran kapsayıcıda tutulur.
 * - Header ve menü kontrollerinin boyutları ilk çizimde sabittir.
 * - Animasyonlar sadece transform/opacity ile yapılır; reduced-motion desteklenir.
 */
.phmath-embed-reserve{
  position:relative;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border-radius:12px;
  background:#eef1f6;
  margin:1.25em 0;
}
.phmath-embed-reserve > iframe,
.phmath-embed-reserve > video{
  position:absolute;
  inset:0;
  width:100%!important;
  height:100%!important;
  border:0;
}
.entry-content figure{max-width:100%}
.entry-content .wp-block-image{margin-left:0;margin-right:0}
@supports not (scrollbar-gutter:stable){
  html{overflow-y:scroll}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}


/* ===== V008: Arama ===== */
.phmath-search-form{
  display:flex;
  align-items:center;
  gap:8px;
  max-width:620px;
  margin:0;
}
.phmath-search-form input[type="search"]{
  flex:1 1 auto;
  min-width:0;
  height:42px;
  padding:0 14px;
  border:1px solid #d9dee7;
  border-radius:10px;
  background:#fff;
  font:inherit;
  color:inherit;
  box-sizing:border-box;
}
.phmath-search-form button{
  height:42px;
  padding:0 18px;
  border:0;
  border-radius:10px;
  background:#2457d6;
  color:#fff;
  cursor:pointer;
  font:inherit;
  font-weight:700;
}
.phmath-search-form button:focus-visible,
.phmath-search-form input:focus-visible{
  outline:3px solid rgba(0,120,212,.25);
  outline-offset:2px;
}

/* ===== V008: Tekil yazı öne çıkan görsel ===== */
.single-featured{
  float:left;
  width:min(320px,38%);
  margin:0 24px 14px 0;
  line-height:0;
}
.single-featured img{
  display:block;
  width:100%;
  height:auto;
  border-radius:12px;
}
.single-wrap .entry-content::after{
  content:"";
  display:block;
  clear:both;
}

/* ===== V008: Alt Menü ===== */
.footer-nav{
  margin-top:22px;
  text-align:left;
}
.footer-menu,
.single-footer-menu{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-menu a,
.single-footer-menu a{
  text-decoration:none;
}
.menu-empty-note{
  margin:.5rem 0 0;
  opacity:.7;
  font-size:.9rem;
}

/* Erişilebilir odak ve yardımcı sınıf */
.screen-reader-text{
  position:absolute!important;
  width:1px!important;
  height:1px!important;
  padding:0!important;
  margin:-1px!important;
  overflow:hidden!important;
  clip:rect(0,0,0,0)!important;
  white-space:nowrap!important;
  border:0!important;
}
.skip-link:focus{
  position:fixed!important;
  top:8px!important;
  left:8px!important;
  width:auto!important;
  height:auto!important;
  padding:10px 14px!important;
  margin:0!important;
  overflow:visible!important;
  clip:auto!important;
  z-index:99999;
  background:#fff;
  color:#111;
  border:2px solid currentColor;
  border-radius:8px;
}

@media (max-width:700px){
  .phmath-search-form{
    max-width:none;
  }
  .phmath-search-form button{
    padding:0 14px;
  }
  .single-featured{
    float:none;
    width:100%;
    max-width:420px;
    margin:0 0 18px;
  }
}
@media (prefers-reduced-motion:reduce){
  .phmath-search-form *,
  .single-featured *{
    scroll-behavior:auto!important;
    transition:none!important;
    animation:none!important;
  }
}


/* ===== V009: İç sayfa üst arama ===== */
.site-header .header-row{
  position:relative;
}
.phmath-header-search{
  position:relative;
  margin-left:auto;
  flex:0 0 auto;
  z-index:1005;
}
.phmath-search-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:5px;
  min-height:38px;
  padding:7px 10px;
  border:1px solid rgba(0,0,0,.12);
  border-radius:9px;
  background:transparent;
  color:inherit;
  cursor:pointer;
  font:inherit;
}
.phmath-search-toggle span:first-child{
  font-size:22px;
  line-height:1;
}
.phmath-search-label{
  font-size:.9rem;
}
.phmath-search-panel{
  position:absolute;
  top:calc(100% + 8px);
  right:0;
  width:min(430px, calc(100vw - 28px));
  padding:10px;
  border:1px solid rgba(0,0,0,.12);
  border-radius:12px;
  background:#fff;
  box-shadow:0 8px 28px rgba(0,0,0,.12);
  box-sizing:border-box;
}
.phmath-header-search-form{
  max-width:none;
}
.phmath-header-search-form input[type="search"]{
  min-width:0;
}
.phmath-search-toggle:focus-visible,
.phmath-search-panel input:focus-visible,
.phmath-search-panel button:focus-visible{
  outline:3px solid rgba(0,120,212,.25);
  outline-offset:2px;
}

/* Footer ve tekil yazı alt menüsü: yazı gövdesiyle aynı hizada */
.footer-nav,
.single-footer-menu{
  text-align:left;
}
.footer-nav .footer-menu,
.single-footer-menu{
  justify-content:flex-start;
  margin-left:0;
  margin-right:0;
}

/* Arama sonuçları */
.archive-header{
  margin-bottom:18px;
}
.post-card{
  margin-bottom:18px;
}

/* Küçük ekranlarda arama butonu kompakt */
@media(max-width:900px){
  .phmath-search-label{display:none;}
  .phmath-search-toggle{width:40px;padding:7px;}
}
@media(max-width:700px){
  .phmath-header-search{
    margin-left:6px;
  }
  .phmath-search-panel{
    right:-6px;
  }
}