/*
Theme Name: IranVBA Nexus
Theme URI: https://iranvba.com/
Author: Sadegh Abshenas
Author URI: https://iranvba.com/
Description: قالب سبک، دسترس‌پذیر و یکپارچه با افزونه IV Dynamic Sidebar برای وب‌سایت IranVBA.
Version: 1.2.0
Requires at least: 6.5
Requires PHP: 8.0
Text Domain: iranvba-nexus
License: GPL-2.0-or-later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Tags: rtl-language-support, accessibility-ready, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, e-commerce
*/

:root {
  color-scheme: dark;
  --iv-bg: #111827;
  --iv-bg-elevated: #182235;
  --iv-bg-soft: #202c41;
  --iv-text: #f4f7fb;
  --iv-text-muted: #c3cedd;
  --iv-border: #40516b;
  --iv-accent: #7dd3fc;
  --iv-accent-strong: #38bdf8;
  --iv-accent-text: #06131d;
  --iv-success: #86efac;
  --iv-danger: #fca5a5;
  --iv-code-bg: #0a0f1a;
  --iv-code-text: #ffca80;
  --iv-shadow: 0 12px 35px rgb(0 0 0 / 24%);
  --iv-hero-start: #07111f;
  --iv-hero-end: #111827;
  --iv-hero-text: #ffffff;
  --iv-hero-muted: #d8e2ef;
  --iv-radius: 14px;
  --iv-container: 1240px;
  --iv-content: 780px;
  --iv-font: "Vazirmatn", Tahoma, Arial, "Segoe UI", sans-serif;
  --iv-heading-font: "Lalezar", "Vazirmatn", Tahoma, sans-serif;
  --iv-code-font: "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

html[data-iv-scheme="light"] {
  color-scheme: light;
  --iv-bg: #f7f9fc;
  --iv-bg-elevated: #ffffff;
  --iv-bg-soft: #edf2f8;
  --iv-text: #152033;
  --iv-text-muted: #4b5c74;
  --iv-border: #c9d3df;
  --iv-accent: #075985;
  --iv-accent-strong: #0369a1;
  --iv-accent-text: #ffffff;
  --iv-success: #166534;
  --iv-danger: #b91c1c;
  --iv-code-bg: #172033;
  --iv-code-text: #ffd08a;
  --iv-shadow: 0 12px 35px rgb(22 34 51 / 12%);
  --iv-hero-start: #dbeaf6;
  --iv-hero-end: #f7f9fc;
  --iv-hero-text: #152033;
  --iv-hero-muted: #40536a;
}

html[data-iv-scheme="sepia"] {
  color-scheme: light;
  --iv-bg: #f4ecd8;
  --iv-bg-elevated: #fffaf0;
  --iv-bg-soft: #eadfc6;
  --iv-text: #332a20;
  --iv-text-muted: #68594a;
  --iv-border: #b9a98e;
  --iv-accent: #7c3f00;
  --iv-accent-strong: #9a4f00;
  --iv-accent-text: #ffffff;
  --iv-code-bg: #29231e;
  --iv-code-text: #ffd49a;
  --iv-hero-start: #e5d5b6;
  --iv-hero-end: #f4ecd8;
  --iv-hero-text: #332a20;
  --iv-hero-muted: #5c4d3e;
}

html[data-iv-scheme="contrast"] {
  color-scheme: dark;
  --iv-bg: #000000;
  --iv-bg-elevated: #080808;
  --iv-bg-soft: #151515;
  --iv-text: #ffffff;
  --iv-text-muted: #ffffff;
  --iv-border: #ffffff;
  --iv-accent: #ffff00;
  --iv-accent-strong: #00ffff;
  --iv-accent-text: #000000;
  --iv-success: #00ff66;
  --iv-danger: #ff7070;
  --iv-code-bg: #000000;
  --iv-code-text: #ffff00;
  --iv-shadow: none;
  --iv-hero-start: #000000;
  --iv-hero-end: #000000;
  --iv-hero-text: #ffffff;
  --iv-hero-muted: #ffffff;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--iv-bg);
  color: var(--iv-text);
  font-family: var(--iv-font);
  font-size: 1rem;
  line-height: 1.85;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}
img, svg, video, iframe { max-width: 100%; }
img { height: auto; }
a { color: var(--iv-accent); text-underline-offset: .2em; }
a:hover { color: var(--iv-accent-strong); }
button, input, select, textarea { font: inherit; }
button, [type="button"], [type="submit"], [role="button"], .button {
  min-height: 44px;
  min-width: 44px;
}
:focus-visible { outline: 3px solid var(--iv-accent-strong); outline-offset: 3px; }
::selection { color: #000; background: #b7ff2a; }

.iv-skip-link {
  position: fixed;
  inset-block-start: .75rem;
  inset-inline-start: .75rem;
  z-index: 100000;
  padding: .65rem 1rem;
  border-radius: .5rem;
  background: var(--iv-accent-strong);
  color: var(--iv-accent-text);
  transform: translateY(-180%);
}
.iv-skip-link:focus { transform: translateY(0); }
.iv-screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

.iv-container { width: min(100% - 2rem, var(--iv-container)); margin-inline: auto; }
.iv-site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 1000;
  background: color-mix(in srgb, var(--iv-bg-elevated) 94%, transparent);
  border-block-end: 1px solid var(--iv-border);
  backdrop-filter: blur(10px);
}
.iv-header-row { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem 1rem; min-height: 72px; padding-block: .65rem; }
.iv-brand { display: flex; align-items: center; gap: .75rem; min-width: max-content; }
.iv-brand a { color: var(--iv-text); text-decoration: none; }
.iv-brand-title { display: block; font-size: 1.25rem; font-weight: 800; line-height: 1.2; }
.iv-brand-description { display: block; color: var(--iv-text-muted); font-size: .8rem; line-height: 1.4; }
.custom-logo { display: block; width: auto; max-height: 48px; }
.iv-primary-navigation { flex: 1 1 100%; min-width: 0; border-block-start: 1px solid color-mix(in srgb, var(--iv-border) 65%, transparent); padding-block-start: .45rem; }
.iv-primary-navigation__inner { display: flex; align-items: center; gap: .75rem; min-width: 0; }
.iv-menu, .iv-menu ul { list-style: none; margin: 0; padding: 0; }
.iv-menu { display: flex; flex: 1 1 auto; flex-wrap: wrap; align-items: center; justify-content: center; gap: .2rem; min-width: 0; }
.iv-menu > li { position: relative; flex: 0 0 auto; max-width: 100%; }
.iv-menu a, .iv-submenu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .55rem .75rem;
  border: 0;
  border-radius: .55rem;
  background: transparent;
  color: var(--iv-text);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: normal;
}
.iv-menu a:hover, .iv-menu a:focus-visible, .iv-submenu-toggle:hover { background: var(--iv-bg-soft); }
.iv-submenu-toggle { min-width: 44px; padding-inline: .5rem; }
.iv-menu-item-row { display: flex; align-items: center; max-width: 100%; }
.iv-menu-label { display: inline-flex; align-items: center; gap: .35rem; white-space: nowrap; overflow-wrap: normal; word-break: normal; }
.iv-menu-label img { display: inline-block; flex: 0 0 auto; width: 16px; height: 11px; margin: 0; object-fit: contain; }
.iv-menu .sub-menu {
  position: absolute;
  inset-block-start: calc(100% + .35rem);
  inset-inline-start: 0;
  z-index: 20;
  min-width: 260px;
  max-height: min(70vh, 620px);
  overflow: auto;
  padding: .45rem;
  border: 1px solid var(--iv-border);
  border-radius: .75rem;
  background: var(--iv-bg-elevated);
  box-shadow: var(--iv-shadow);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-.35rem);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
}
.iv-menu li:not(.iv-mega-menu):hover > .sub-menu,
.iv-menu li:not(.iv-mega-menu):focus-within > .sub-menu,
.iv-menu li.is-submenu-open > .sub-menu {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}
.iv-menu .sub-menu .sub-menu { position: static; display: none; margin-block-start: .25rem; box-shadow: none; }
.iv-menu .sub-menu li.is-submenu-open > .sub-menu { display: block; }
.iv-menu .sub-menu a { justify-content: flex-start; white-space: normal; overflow-wrap: break-word; }
.iv-menu .sub-menu .iv-menu-label { white-space: normal; overflow-wrap: break-word; }
.iv-menu-toggle {
  display: none;
  border: 1px solid var(--iv-border);
  border-radius: .65rem;
  background: var(--iv-bg-soft);
  color: var(--iv-text);
  padding: .5rem .75rem;
  cursor: pointer;
}

.iv-scheme-switcher {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: .25rem;
  margin-inline-start: auto;
  padding: .25rem;
  border: 1px solid var(--iv-border);
  border-radius: .75rem;
  background: var(--iv-bg-soft);
}
.iv-scheme-switcher > input { display: none; }
.iv-scheme-switcher__button {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  min-width: auto;
  min-height: 38px;
  padding: .35rem .5rem;
  border: 1px solid transparent;
  border-radius: .5rem;
  background: transparent;
  color: var(--iv-text);
  font-size: .82rem;
  cursor: pointer;
  white-space: nowrap;
}
.iv-scheme-switcher__button:hover,
.iv-scheme-switcher__button[aria-pressed="true"] { border-color: var(--iv-accent); background: var(--iv-bg-elevated); }
.iv-scheme-switcher__swatch { width: .9rem; height: .9rem; border: 1px solid currentColor; border-radius: 50%; }
.iv-scheme-switcher__button--dark .iv-scheme-switcher__swatch { background: #111827; }
.iv-scheme-switcher__button--light .iv-scheme-switcher__swatch { background: #f7f9fc; }
.iv-scheme-switcher__button--sepia .iv-scheme-switcher__swatch { background: #f4ecd8; }
.iv-scheme-switcher__button--contrast .iv-scheme-switcher__swatch { background: linear-gradient(135deg, #000 50%, #ff0 50%); }

:where(h1,h2,h3,h4,h5,h6),
.iv-brand-title,
.iv-button,
.button,
button[type="submit"],
input[type="submit"] { font-family: var(--iv-heading-font); }

.iv-main { min-height: 60vh; padding-block: clamp(1.25rem, 3vw, 2.5rem); }
.iv-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: clamp(1.25rem, 3vw, 2.5rem); align-items: start; }
.iv-content { min-width: 0; }
.iv-card, .iv-article, .widget, .iv-context-nav {
  border: 1px solid var(--iv-border);
  border-radius: var(--iv-radius);
  background: var(--iv-bg-elevated);
  box-shadow: var(--iv-shadow);
}
.iv-article { overflow: clip; }
.iv-article-header { padding: clamp(1.25rem, 4vw, 2.5rem); }
.iv-article-title { margin: 0; font-size: clamp(1.8rem, 5vw, 3rem); line-height: 1.35; }
.iv-article-meta { display: flex; flex-wrap: wrap; gap: .5rem 1rem; margin-block-start: .75rem; color: var(--iv-text-muted); font-size: .92rem; }
.iv-featured-image { margin: 0; background: var(--iv-bg-soft); }
.iv-featured-image img { display: block; width: 100%; object-fit: cover; aspect-ratio: 16 / 9; }
.iv-entry-content { padding: clamp(1.25rem, 4vw, 2.5rem); }
.iv-entry-content > :first-child { margin-block-start: 0; }
.iv-entry-content > :last-child { margin-block-end: 0; }
.iv-entry-content p, .iv-entry-content li { text-align: justify; }
.iv-entry-content h2 { margin-block-start: 2.2em; font-size: clamp(1.45rem, 3vw, 2rem); }
.iv-entry-content h3 { margin-block-start: 1.8em; font-size: clamp(1.25rem, 2.4vw, 1.65rem); }
.iv-entry-content h4 { margin-block-start: 1.5em; font-size: 1.15rem; }
.iv-entry-content :where(h2,h3,h4,h5,h6) { scroll-margin-top: 90px; line-height: 1.45; }
.iv-entry-content table { width: 100%; border-collapse: collapse; margin-block: 1.5rem; }
.iv-entry-content th, .iv-entry-content td { border: 1px solid var(--iv-border); padding: .65rem; vertical-align: top; }
.iv-entry-content pre, .iv-entry-content code, code, kbd, samp { font-family: var(--iv-code-font); direction: ltr; text-align: left; }
.iv-entry-content pre { overflow: auto; padding: 1rem; border: 1px solid var(--iv-border); border-radius: .75rem; background: var(--iv-code-bg); color: var(--iv-code-text); }
.iv-entry-content :not(pre) > code { padding: .12rem .35rem; border-radius: .3rem; background: var(--iv-code-bg); color: var(--iv-code-text); }
.iv-entry-content blockquote { margin-inline: 0; padding: .8rem 1rem; border-inline-start: 4px solid var(--iv-accent-strong); background: var(--iv-bg-soft); }

.iv-sidebar { display: grid; gap: 1rem; position: sticky; inset-block-start: 92px; }
.widget, .iv-context-nav { padding: 1rem; }
.widget-title, .iv-context-nav__title { margin: 0 0 .75rem; font-size: 1.1rem; }
.widget ul, .iv-context-nav ul { list-style: none; padding: 0; margin: 0; }
.widget li + li, .iv-context-nav li + li { margin-block-start: .25rem; }
.widget a, .iv-context-nav a { display: block; min-height: 44px; padding: .45rem .55rem; border-radius: .45rem; text-decoration: none; }
.widget a:hover, .iv-context-nav a:hover { background: var(--iv-bg-soft); }
.iv-context-nav .is-current > a { background: var(--iv-accent-strong); color: var(--iv-accent-text); font-weight: 700; }

.iv-page-header { margin-block-end: 1.5rem; padding: clamp(1.25rem, 4vw, 2rem); border: 1px solid var(--iv-border); border-radius: var(--iv-radius); background: linear-gradient(135deg, var(--iv-bg-elevated), var(--iv-bg-soft)); }
.iv-page-header h1 { margin: 0; line-height: 1.35; }
.iv-post-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1.25rem; }
.iv-post-card { overflow: clip; }
.iv-post-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.iv-post-card__body { padding: 1rem; }
.iv-post-card__title { margin: 0 0 .5rem; font-size: 1.2rem; line-height: 1.5; }
.iv-post-card__title a { color: var(--iv-text); text-decoration: none; }
.iv-pagination { margin-block-start: 1.5rem; }
.iv-pagination .nav-links { display: flex; flex-wrap: wrap; gap: .4rem; }
.iv-pagination a, .iv-pagination span { display: grid; place-items: center; min-width: 44px; min-height: 44px; padding: .35rem; border: 1px solid var(--iv-border); border-radius: .45rem; text-decoration: none; }
.iv-pagination .current { background: var(--iv-accent-strong); color: var(--iv-accent-text); }

.iv-hero { padding-block: clamp(3rem, 9vw, 7rem); background: radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--iv-accent-strong) 24%, transparent), transparent 35%), linear-gradient(135deg, var(--iv-hero-start), var(--iv-hero-end)); color: var(--iv-hero-text); border-block-end: 1px solid var(--iv-border); }
.iv-hero__inner { max-width: 840px; }
.iv-hero h1 { margin: 0; color: var(--iv-hero-text); font-size: clamp(2.2rem, 7vw, 5rem); line-height: 1.15; }
.iv-hero p { max-width: 650px; font-size: clamp(1rem, 2.5vw, 1.3rem); color: var(--iv-hero-muted); }
.iv-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.iv-button, .button, button[type="submit"], input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .65rem 1rem;
  border: 1px solid transparent;
  border-radius: .6rem;
  background: var(--iv-accent-strong);
  color: var(--iv-accent-text);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.iv-button--secondary { border-color: var(--iv-border); background: var(--iv-bg-soft); color: var(--iv-text); }

.iv-comments { margin-block-start: 1.5rem; padding: clamp(1rem, 3vw, 2rem); }
.iv-comments-title { margin-block-start: 0; }
.comment-list { list-style: none; padding: 0; }
.comment-list .children { list-style: none; padding-inline-start: 1.25rem; }
.comment-body { margin-block: 1rem; padding: 1rem; border: 1px solid var(--iv-border); border-radius: .75rem; background: var(--iv-bg-soft); }
.comment-meta { color: var(--iv-text-muted); font-size: .9rem; }
.comment-form { display: grid; gap: .8rem; }
.comment-form p { margin: 0; }
.comment-form label { display: block; margin-block-end: .3rem; font-weight: 700; }
.comment-form input:not([type="checkbox"]), .comment-form textarea,
.iv-theme-preferences select, .search-form input[type="search"] {
  width: 100%; min-height: 44px; padding: .6rem .75rem; border: 1px solid var(--iv-border); border-radius: .5rem; background: var(--iv-bg); color: var(--iv-text);
}

.iv-site-footer { margin-block-start: 2rem; border-block-start: 1px solid var(--iv-border); background: var(--iv-bg-elevated); }
.iv-footer-widgets { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; padding-block: 2rem; }
.iv-footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1rem; border-block-start: 1px solid var(--iv-border); color: var(--iv-text-muted); }
.iv-social-links { display: flex; flex-wrap: wrap; gap: .5rem; }
.iv-social-links a { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--iv-border); border-radius: .65rem; color: var(--iv-text); }
.iv-social-links svg { width: 20px; height: 20px; fill: currentColor; }

.iv-theme-preferences { margin-block: 1rem; }
.iv-theme-preferences fieldset { border: 1px solid var(--iv-border); border-radius: .75rem; padding: 1rem; }
.iv-theme-preferences legend { padding-inline: .4rem; font-weight: 800; }
.iv-theme-preferences__row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: .75rem; align-items: end; }

.woocommerce .products { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); grid-auto-rows: 1fr; gap: 1rem; padding: 0; }
.woocommerce ul.products li.product { display: flex; flex-direction: column; width: auto !important; height: 100%; margin: 0 !important; padding: 1rem; border: 1px solid var(--iv-border); border-radius: var(--iv-radius); background: var(--iv-bg-elevated); text-align: center; }
.woocommerce ul.products li.product .woocommerce-LoopProduct-link { display: flex; flex: 1 1 auto; flex-direction: column; color: inherit; text-decoration: none; }
.woocommerce ul.products li.product a img { display: block; width: 100%; aspect-ratio: 16 / 10; margin: 0 0 1rem !important; border-radius: .7rem; background: var(--iv-bg-soft); object-fit: cover; }
.woocommerce ul.products li.product .woocommerce-loop-product__title { display: flex; align-items: flex-start; justify-content: center; min-height: 4.8em; margin: 0; padding: 0 !important; line-height: 1.6; }
.woocommerce ul.products li.product .price { display: block; min-height: 2.2em; margin-block-start: auto; padding-block-start: .75rem; }
.woocommerce ul.products li.product .button { width: 100%; margin-block-start: 1rem; }
.woocommerce div.product { padding: clamp(1rem,3vw,2rem); border: 1px solid var(--iv-border); border-radius: var(--iv-radius); background: var(--iv-bg-elevated); }
.woocommerce .quantity .qty { min-height: 44px; color: var(--iv-text); background: var(--iv-bg); border: 1px solid var(--iv-border); }

@media (max-width: 980px) {
  .iv-menu-toggle { display: inline-flex; align-items: center; gap: .5rem; }
  .iv-primary-navigation { position: fixed; inset: 73px 0 auto 0; max-height: calc(100vh - 73px); overflow: auto; padding: 1rem; border-block-end: 1px solid var(--iv-border); background: var(--iv-bg-elevated); transform: translateY(-120%); visibility: hidden; transition: transform .2s ease, visibility .2s; }
  .iv-primary-navigation.is-open { transform: translateY(0); visibility: visible; }
  .iv-primary-navigation__inner { display: block; }
  .iv-menu { display: block; }
  .iv-menu > li { border-block-end: 1px solid var(--iv-border); }
  .iv-menu-item-row { justify-content: space-between; }
  .iv-menu .sub-menu { position: static; display: none; visibility: visible; opacity: 1; transform: none; max-height: none; margin: 0 1rem .5rem; box-shadow: none; }
  .iv-menu li.is-submenu-open > .sub-menu { display: block; }
  .iv-scheme-switcher { flex-wrap: wrap; justify-content: center; width: 100%; margin: .75rem 0 0; }
  .iv-layout { grid-template-columns: 1fr; }
  .iv-sidebar { position: static; }
}

@media (max-width: 700px) {
  .iv-brand-description { display: none; }
  .iv-scheme-switcher__label { display: none; }
  .iv-post-grid, .iv-footer-widgets, .woocommerce .products { grid-template-columns: 1fr; }
  .iv-theme-preferences__row { grid-template-columns: 1fr; }
  .iv-entry-content p, .iv-entry-content li { text-align: start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* 1.0.1 menu overflow safeguards. */
.iv-menu .sub-menu {
  width: max-content;
  max-width: min(420px, calc(100vw - 2rem));
}
.iv-menu .sub-menu li,
.iv-menu .sub-menu .iv-menu-item-row { width: 100%; }
.iv-menu .sub-menu a { width: 100%; }

/* 1.0.2: nested dynamic menus, desktop mega menu and compact appearance menu. */
.iv-primary-navigation { position: relative; }
.iv-utility-menu {
  flex: 0 0 auto;
  justify-content: flex-end;
  margin-inline-start: auto;
}
.iv-scheme-menu__trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  min-height: 44px;
  padding: .55rem .75rem;
  border: 0;
  border-radius: .55rem;
  background: transparent;
  color: var(--iv-text);
  font: inherit;
  cursor: pointer;
  white-space: nowrap;
}
.iv-scheme-menu__trigger:hover,
.iv-scheme-menu__trigger:focus-visible { background: var(--iv-bg-soft); }
.iv-scheme-menu > .sub-menu {
  inset-inline-start: auto;
  inset-inline-end: 0;
  min-width: 230px;
  width: 230px;
  max-width: min(230px, calc(100vw - 2rem));
}
.iv-scheme-menu__panel { width: 100%; }
.iv-scheme-switcher {
  display: grid;
  grid-template-columns: 1fr;
  gap: .3rem;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
.iv-scheme-switcher input[type="hidden"] { display: none; }
.iv-scheme-switcher__button {
  justify-content: flex-start;
  width: 100%;
  min-height: 44px;
  padding: .55rem .7rem;
  font-size: .9rem;
}

@media (min-width: 981px) {
  /* The nearest positioned ancestor is the full navigation row, allowing the
     dropdown to span the complete theme container rather than one menu item. */
  .iv-menu > li.iv-mega-menu { position: static; }
  .iv-menu > li.iv-mega-menu > .sub-menu {
    inset-block-start: 100%;
    inset-inline: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    align-items: start;
    gap: 0;
    width: 100%;
    max-width: none;
    max-height: min(78vh, 760px);
    overflow: auto;
    padding: 0;
    border-radius: 0 0 .85rem .85rem;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu > li {
    min-width: 0;
    height: 100%;
    border-inline-end: 1px solid var(--iv-border);
  }
  .iv-menu > li.iv-mega-menu > .sub-menu > li:last-child { border-inline-end: 0; }
  .iv-menu > li.iv-mega-menu > .sub-menu > li > .iv-menu-item-row {
    position: sticky;
    inset-block-start: 0;
    z-index: 2;
    background: var(--iv-bg-soft);
  }
  .iv-menu > li.iv-mega-menu > .sub-menu > li > .iv-menu-item-row > a {
    justify-content: center;
    min-height: 48px;
    border-radius: 0;
    font-weight: 800;
    text-align: center;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-submenu-toggle { display: none; }

  /* All deeper levels form the content of each mega-menu column. */
  .iv-menu > li.iv-mega-menu > .sub-menu .sub-menu {
    position: static;
    display: block;
    visibility: visible;
    opacity: 1;
    transform: none;
    width: 100%;
    max-width: none;
    max-height: none;
    overflow: visible;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .sub-menu li {
    width: 100%;
    border-block-start: 1px solid color-mix(in srgb, var(--iv-border) 55%, transparent);
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .sub-menu .iv-menu-item-row { width: 100%; }
  .iv-menu > li.iv-mega-menu > .sub-menu .sub-menu a {
    justify-content: center;
    width: 100%;
    min-height: 46px;
    padding: .55rem .65rem;
    border-radius: 0;
    font-size: .86rem;
    line-height: 1.45;
    text-align: center;
    white-space: normal;
    overflow-wrap: break-word;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-dynamic-category > .iv-menu-item-row > a {
    background: color-mix(in srgb, var(--iv-bg-soft) 72%, transparent);
    font-weight: 800;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-dynamic-post.current-menu-item > .iv-menu-item-row > a,
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-dynamic-post > .iv-menu-item-row > a:hover,
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-dynamic-post > .iv-menu-item-row > a:focus-visible {
    background: var(--iv-bg-soft);
    color: var(--iv-accent);
  }
}

@media (max-width: 980px) {
  .iv-utility-menu {
    display: block;
    width: 100%;
    margin: .5rem 0 0;
    border-block-start: 1px solid var(--iv-border);
  }
  .iv-utility-menu > li { border-block-end: 0; }
  .iv-scheme-menu__trigger {
    justify-content: space-between;
    width: 100%;
  }
  .iv-scheme-menu > .sub-menu {
    width: auto;
    max-width: none;
    margin: 0 1rem .5rem;
  }
  .iv-scheme-menu .iv-scheme-switcher__label { display: inline; }

  /* Mega menus use the same predictable accordion model as other mobile menus. */
  .iv-menu > li.iv-mega-menu > .sub-menu,
  .iv-menu > li.iv-mega-menu > .sub-menu .sub-menu {
    position: static;
    display: none;
    visibility: visible;
    opacity: 1;
    transform: none;
    width: auto;
    max-width: none;
    max-height: none;
    overflow: visible;
    margin: 0 1rem .5rem;
    padding: .35rem;
    box-shadow: none;
  }
  .iv-menu > li.iv-mega-menu.is-submenu-open > .sub-menu,
  .iv-menu > li.iv-mega-menu > .sub-menu li.is-submenu-open > .sub-menu {
    display: block;
  }
}


/* 1.0.3: integrate the appearance item and constrain mega-menu hit areas/content. */
.iv-menu > li.iv-scheme-menu {
  margin-inline-start: auto;
}
.iv-menu > li.iv-scheme-menu > .iv-menu-item-row,
.iv-menu > li.iv-scheme-menu .iv-scheme-menu__trigger {
  max-width: 100%;
}

@media (min-width: 981px) {
  /* A hidden full-width mega panel must never become a pointer target. It is
     opened only after the real top-level row receives pointer entry, by JS. */
  .iv-menu > li.iv-mega-menu > .sub-menu {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: minmax(0, 1fr);
    box-sizing: border-box;
    pointer-events: none;
  }
  .iv-menu > li.iv-mega-menu.is-pointer-open > .sub-menu,
  .iv-menu > li.iv-mega-menu:focus-within > .sub-menu,
  .iv-menu > li.iv-mega-menu.is-submenu-open > .sub-menu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu > li {
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-item-row,
  .iv-menu > li.iv-mega-menu > .sub-menu a,
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-label {
    box-sizing: border-box;
    min-width: 0;
    max-width: 100%;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-item-row {
    width: 100%;
    overflow: hidden;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu a {
    overflow: hidden;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-label {
    display: block;
    width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: normal;
    unicode-bidi: plaintext;
  }
}

@media (max-width: 980px) {
  .iv-menu > li.iv-scheme-menu {
    margin-inline-start: 0;
  }
}

/* 1.0.4: footer, appearance icon, content flow and complete mega-menu text. */
.iv-footer-widgets {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.iv-footer-widget-area { min-width: 0; }
.iv-footer-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: 1rem;
  border-block-start: 1px solid var(--iv-border);
}
.iv-footer-copyright {
  padding-block: 1rem;
  border-block-start: 1px solid var(--iv-border);
  color: var(--iv-text-muted);
  text-align: center;
  line-height: 1.8;
}
.iv-footer-copyright a { color: inherit; }

/* Floats and legacy W3 rows at the end of the home-page article must
   contribute to the article height instead of being clipped. */
.iv-entry-content { display: flow-root; }
.iv-entry-content > .w3-row:last-child { max-width: 100%; }
.iv-entry-content > .w3-row:last-child a { max-width: 100%; }

/* The appearance control is an ordinary compact item in the same menu row. */
.iv-menu > li.iv-scheme-menu {
  flex: 0 0 auto;
  margin-inline: 0;
}
.iv-menu > li.iv-scheme-menu > .iv-menu-item-row {
  width: auto;
  overflow: visible;
}
.iv-scheme-menu__trigger {
  width: 46px;
  min-width: 46px;
  padding-inline: .55rem;
  gap: .15rem;
}
.iv-scheme-menu__icon { flex: 0 0 auto; }
.iv-scheme-menu__chevron { flex: 0 0 auto; }

@media (min-width: 981px) {
  /* Use the real number of first-level mega-menu sections. Each column owns
     its inline size, while long Persian/Latin labels wrap without clipping. */
  .iv-menu > li.iv-mega-menu > .sub-menu {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-2 > .sub-menu { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-3 > .sub-menu { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-4 > .sub-menu { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-5 > .sub-menu { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-6 > .sub-menu { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-7 > .sub-menu { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .iv-menu > li.iv-mega-menu.iv-mega-columns-8 > .sub-menu { grid-template-columns: repeat(8, minmax(0, 1fr)); }

  .iv-menu > li.iv-mega-menu > .sub-menu > li,
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-item-row,
  .iv-menu > li.iv-mega-menu > .sub-menu a,
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-label {
    min-inline-size: 0;
    max-inline-size: 100%;
    overflow: visible;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu > li {
    inline-size: auto;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-item-row,
  .iv-menu > li.iv-mega-menu > .sub-menu a {
    inline-size: 100%;
  }
  .iv-menu > li.iv-mega-menu > .sub-menu .iv-menu-label {
    display: block;
    inline-size: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
    hyphens: auto;
  }
}

@media (max-width: 980px) {
  .iv-footer-widgets { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .iv-menu > li.iv-scheme-menu { margin-inline: 0; }
  .iv-menu > li.iv-scheme-menu > .iv-menu-item-row { justify-content: flex-start; }
  .iv-scheme-menu__trigger {
    justify-content: center;
    width: 46px;
  }
}

@media (max-width: 700px) {
  .iv-footer-widgets { grid-template-columns: 1fr; }
}

@media (min-width: 981px) {
  /* The educational navigation needs more horizontal room than article text.
     A wider header also gives each mega-menu column enough readable width. */
  .iv-site-header > .iv-container {
    width: min(100% - 1rem, 1500px);
  }
  .iv-menu {
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: .1rem;
  }
  .iv-menu > li > .iv-menu-item-row > a {
    padding-inline: .55rem;
    font-size: .94rem;
  }
  .iv-menu > li > .iv-menu-item-row > .iv-submenu-toggle {
    min-width: 40px;
    padding-inline: .35rem;
  }
}

/* 1.0.5: contain nested mega-menu lists and equalize footer widget cards. */
@media (min-width: 981px) {
  /* The generic dropdown rule gives every .sub-menu a 260px minimum width.
     Nested mega-menu lists must instead inherit the exact grid-column width. */
  .iv-menu > li.iv-mega-menu > .sub-menu ul.sub-menu {
    position: static;
    inset: auto;
    inline-size: 100%;
    width: 100%;
    min-inline-size: 0;
    min-width: 0;
    max-inline-size: 100%;
    max-width: 100%;
    margin-inline: 0;
    box-sizing: border-box;
  }

  .iv-menu > li.iv-mega-menu > .sub-menu > li,
  .iv-menu > li.iv-mega-menu > .sub-menu ul.sub-menu > li,
  .iv-menu > li.iv-mega-menu > .sub-menu ul.sub-menu .iv-menu-item-row,
  .iv-menu > li.iv-mega-menu > .sub-menu ul.sub-menu a,
  .iv-menu > li.iv-mega-menu > .sub-menu ul.sub-menu .iv-menu-label {
    inline-size: 100%;
    min-inline-size: 0;
    max-inline-size: 100%;
    box-sizing: border-box;
  }

  .iv-menu > li.iv-mega-menu > .sub-menu ul.sub-menu .iv-menu-label {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }
}

.iv-footer-widgets {
  align-items: stretch;
  grid-auto-rows: 1fr;
}
.iv-footer-widget-area {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.iv-footer-widget-area > .widget:only-child {
  flex: 1 1 auto;
  height: 100%;
}

/* 1.1.0: taxonomy-driven content and WooCommerce navigation. */
@media (min-width: 981px) {
  .iv-menu--dynamic {
    flex-wrap: wrap;
    justify-content: flex-start;
    column-gap: .15rem;
    row-gap: .15rem;
  }

  /* Nested taxonomy headings remain visually distinct while every generated
     list stays constrained to its mega-menu grid column. */
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-taxonomy-menu-item.menu-item-has-children > .iv-menu-item-row > a,
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-content-group > .iv-menu-item-row > a,
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-shop-utility > .iv-menu-item-row > a {
    background: color-mix(in srgb, var(--iv-bg-soft) 78%, transparent);
    font-weight: 800;
  }

  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-term-depth-2 > .iv-menu-item-row > a,
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-term-depth-3 > .iv-menu-item-row > a,
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-term-depth-4 > .iv-menu-item-row > a {
    border-inline-start: 3px solid color-mix(in srgb, var(--iv-accent) 65%, transparent);
  }

  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-dynamic-product > .iv-menu-item-row > a:hover,
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-dynamic-product > .iv-menu-item-row > a:focus-visible,
  .iv-menu--dynamic > li.iv-mega-menu > .sub-menu .iv-dynamic-content.current-menu-item > .iv-menu-item-row > a {
    background: var(--iv-bg-soft);
    color: var(--iv-accent);
  }
}

@media (max-width: 980px) {
  .iv-menu--dynamic .iv-taxonomy-menu-item > .iv-menu-item-row > a {
    min-width: 0;
  }
  .iv-menu--dynamic .iv-term-depth-1 > .iv-menu-item-row > a { padding-inline-start: 1.25rem; }
  .iv-menu--dynamic .iv-term-depth-2 > .iv-menu-item-row > a { padding-inline-start: 1.75rem; }
  .iv-menu--dynamic .iv-term-depth-3 > .iv-menu-item-row > a { padding-inline-start: 2.25rem; }
}