/*
Theme Name: Scholar Bridge
Theme URI: https://example.com/
Author: Scholar Bridge Academic Publisher
Description: Theme for Scholar Bridge Academic Publisher: edited books, conference proceedings, calls for chapters and a published-chapters archive. Use it together with the Scholar Bridge Core plugin.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: scholarbridge
*/

:root {
	--sb-navy: #0e2a47;
	--sb-navy-2: #173b61;
	--sb-teal: #0f8b8d;
	--sb-teal-dark: #0b6f71;
	--sb-teal-light: #2bb3a3;
	--sb-teal-soft: #e3f3f2;
	--sb-gold: #e3a33b;
	--sb-bg: #f3f6f8;
	--sb-card: #ffffff;
	--sb-border: #dce4ea;
	--sb-text: #1e2b37;
	--sb-muted: #5a6b7a;
	--sb-radius: 8px;
	--sb-shadow: 0 1px 3px rgba(14, 42, 71, .08), 0 4px 14px rgba(14, 42, 71, .05);
	--sb-font: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
	--sb-font-head: 'Ubuntu', 'Poppins', system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	background: var(--sb-bg);
	color: var(--sb-text);
	font-family: var(--sb-font);
	font-size: 15px;
	line-height: 1.7;
}
img { max-width: 100%; height: auto; }
a { color: var(--sb-teal-dark); text-decoration: none; }
a:hover, a:focus { color: var(--sb-navy); text-decoration: underline; }
:focus-visible { outline: 2px solid var(--sb-teal); outline-offset: 2px; }
h1, h2, h3, h4, h5 { font-family: var(--sb-font-head); color: var(--sb-navy); line-height: 1.3; margin: 1.4em 0 .6em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }
p { margin: 0 0 1em; }
hr { border: 0; border-top: 1px solid var(--sb-border); margin: 24px 0; }
table { border-collapse: collapse; width: 100%; }
th, td { border: 1px solid var(--sb-border); padding: 8px 12px; text-align: left; vertical-align: top; }
th { background: var(--sb-teal-soft); color: var(--sb-navy); }
blockquote { margin: 0 0 1em; padding: 10px 18px; border-left: 4px solid var(--sb-teal); background: var(--sb-teal-soft); }

.screen-reader-text {
	border: 0; clip: rect(1px, 1px, 1px, 1px); clip-path: inset(50%);
	height: 1px; width: 1px; margin: -1px; overflow: hidden; padding: 0;
	position: absolute !important; word-wrap: normal !important;
}
.skip-link:focus {
	clip: auto; clip-path: none; height: auto; width: auto; margin: 0;
	left: 8px; top: 8px; z-index: 100000; padding: 10px 16px;
	background: #fff; color: var(--sb-navy); box-shadow: var(--sb-shadow);
}

.sb-container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 20px; }

/* Placeholders the owner still has to fill in */
.sb-placeholder, mark.has-inline-color { background: #fff3a3; color: #5a4500; padding: 0 4px; border-radius: 3px; }
.site-footer .sb-placeholder { background: rgba(255, 243, 163, .2); color: #ffe98a; }

/* ---------- Buttons ---------- */
.sb-btn, .wp-block-button__link, .wp-element-button, button[type="submit"], input[type="submit"] {
	display: inline-flex; align-items: center; justify-content: center; gap: 8px;
	background: var(--sb-teal); color: #fff; border: 2px solid var(--sb-teal);
	border-radius: 6px; padding: 9px 20px; font: 600 .92rem/1.3 var(--sb-font);
	cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s, color .15s;
}
.sb-btn:hover, .wp-block-button__link:hover, .wp-element-button:hover, button[type="submit"]:hover, input[type="submit"]:hover {
	background: var(--sb-navy); border-color: var(--sb-navy); color: #fff; text-decoration: none;
}
.sb-btn--gold { background: var(--sb-gold); border-color: var(--sb-gold); color: var(--sb-navy); }
.sb-btn--gold:hover { background: #fff; border-color: #fff; color: var(--sb-navy); }
.sb-btn--outline-light { background: transparent; border-color: rgba(255, 255, 255, .7); color: #fff; }
.sb-btn--outline-light:hover { background: #fff; border-color: #fff; color: var(--sb-navy); }
.is-style-outline .wp-block-button__link { background: transparent; color: var(--sb-teal-dark); }

/* ---------- Forms (general) ---------- */
input[type="text"], input[type="email"], input[type="password"], input[type="url"], input[type="search"],
input[type="tel"], input[type="date"], input[type="number"], select, textarea {
	width: 100%; padding: 10px 12px; border: 1px solid #c9d5de; border-radius: 6px;
	font: inherit; font-size: .93rem; color: var(--sb-text); background: #fff;
}
input:focus, select:focus, textarea:focus { border-color: var(--sb-teal); outline: 2px solid rgba(15, 139, 141, .2); outline-offset: 0; }

/* ---------- Header ---------- */
.site-header { background: #fff; border-bottom: 1px solid var(--sb-border); position: sticky; top: 0; z-index: 50; }
.admin-bar .site-header { top: 32px; }
.site-header__inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 78px; }
.site-branding a { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: 50px; height: 50px; flex: none; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--sb-font-head); font-weight: 700; font-size: 1.4rem; color: var(--sb-navy); letter-spacing: .03em; text-transform: uppercase; }
.brand-sub { font-size: .74rem; color: var(--sb-teal-dark); font-weight: 600; letter-spacing: .14em; text-transform: uppercase; margin-top: 3px; }
.custom-logo { max-height: 64px; width: auto; display: block; }

.main-nav ul { list-style: none; margin: 0; padding: 0; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; }
.main-nav li { position: relative; }
.main-nav a {
	display: block; padding: 10px 9px; color: var(--sb-text); font-weight: 500; font-size: .88rem;
	border-bottom: 2px solid transparent; text-decoration: none; white-space: nowrap;
}
.main-nav .sub-menu a { white-space: normal; }
.main-nav a:hover, .main-nav a:focus,
.main-nav .current-menu-item > a, .main-nav .current_page_item > a, .main-nav .current-menu-ancestor > a {
	color: var(--sb-teal-dark); border-bottom-color: var(--sb-teal); text-decoration: none;
}
.main-nav .sub-menu {
	position: absolute; left: 0; top: 100%; min-width: 240px; z-index: 60;
	background: #fff; border: 1px solid var(--sb-border); border-top: 3px solid var(--sb-teal);
	box-shadow: var(--sb-shadow); padding: 6px 0;
	opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity .15s, transform .15s, visibility .15s;
}
.main-nav li:hover > .sub-menu, .main-nav li:focus-within > .sub-menu { opacity: 1; visibility: visible; transform: none; }
.main-nav .sub-menu a { border: 0; padding: 8px 16px; font-size: .87rem; }
.main-nav .sub-menu a:hover { background: var(--sb-teal-soft); }
.main-nav .sb-nav-button > a { background: var(--sb-teal); color: #fff; border: 0; border-radius: 6px; padding: 8px 16px; margin-left: 8px; }
.main-nav .sb-nav-button > a:hover, .main-nav .sb-nav-button.current-menu-item > a { background: var(--sb-navy); color: #fff; }
.submenu-toggle { display: none; }

.nav-toggle {
	display: none; align-items: center; gap: 8px; background: #fff; color: var(--sb-navy);
	border: 1px solid var(--sb-border); border-radius: 6px; padding: 8px 12px; font: 600 .9rem var(--sb-font); cursor: pointer;
}
.nav-toggle__bars, .nav-toggle__bars::before, .nav-toggle__bars::after {
	display: block; width: 18px; height: 2px; background: currentColor; position: relative; border-radius: 1px;
}
.nav-toggle__bars::before, .nav-toggle__bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

@media (max-width: 1220px) {
	.nav-toggle { display: inline-flex; }
	.main-nav {
		display: none; position: absolute; left: -20px; right: -20px; top: 100%;
		background: #fff; border-bottom: 1px solid var(--sb-border); box-shadow: var(--sb-shadow);
		max-height: calc(100vh - 90px); overflow-y: auto;
	}
	.main-nav.is-open { display: block; }
	.main-nav > ul { flex-direction: column; align-items: stretch; padding: 8px 20px 18px; gap: 0; }
	.main-nav li { border-bottom: 1px solid var(--sb-border); }
	.main-nav a { border-bottom: 0; padding: 12px 4px; }
	.main-nav .menu-item-has-children > a { padding-right: 48px; }
	.main-nav .sub-menu {
		position: static; opacity: 1; visibility: visible; transform: none;
		box-shadow: none; border: 0; padding: 0 0 8px 14px; display: none; min-width: 0;
	}
	.main-nav li.is-open > .sub-menu { display: block; }
	.main-nav .sub-menu li { border: 0; }
	.main-nav .sb-nav-button > a { margin: 12px 0 0; text-align: center; }
	.submenu-toggle {
		display: block; position: absolute; right: 0; top: 4px; width: 40px; height: 40px;
		background: none; border: 0; cursor: pointer; color: var(--sb-navy);
	}
	.submenu-toggle::before {
		content: ""; display: block; width: 9px; height: 9px; margin: 0 auto;
		border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg);
		transition: transform .15s;
	}
	.is-open > .submenu-toggle::before { transform: rotate(-135deg); }
}
@media (max-width: 782px) { .admin-bar .site-header { top: 46px; } }
@media (max-width: 600px) {
	.admin-bar .site-header { top: 0; }
	.brand-name { font-size: 1.1rem; }
	.brand-sub { font-size: .64rem; }
	.brand-mark { width: 42px; height: 42px; }
}

/* ---------- Hero (home page) ---------- */
.sb-hero {
	position: relative; overflow: hidden; color: #fff;
	background: linear-gradient(118deg, var(--sb-navy) 0%, var(--sb-navy-2) 58%, var(--sb-teal-dark) 140%);
}
.sb-hero::before {
	content: ""; position: absolute; inset: 0; opacity: .55;
	background-image: radial-gradient(rgba(255, 255, 255, .14) 1px, transparent 1px);
	background-size: 18px 18px;
}
.sb-hero__inner { position: relative; display: grid; grid-template-columns: 1.25fr .75fr; gap: 30px; align-items: center; padding-top: 50px; padding-bottom: 50px; }
.sb-hero__eyebrow { display: inline-block; font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--sb-gold); font-weight: 600; margin-bottom: 10px; }
.sb-hero h1 { color: #fff; font-size: 2.35rem; margin: 0 0 14px; }
.sb-hero p { color: rgba(255, 255, 255, .86); font-size: 1.04rem; max-width: 600px; }
.sb-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.sb-hero__art svg { width: 100%; max-width: 410px; display: block; margin-left: auto; }
@media (max-width: 860px) {
	.sb-hero__inner { grid-template-columns: 1fr; padding-top: 34px; padding-bottom: 36px; }
	.sb-hero__art { display: none; }
	.sb-hero h1 { font-size: 1.75rem; }
}

/* ---------- Page title band ---------- */
.sb-titleband { background: linear-gradient(118deg, var(--sb-navy), var(--sb-navy-2)); color: #fff; padding: 28px 0 26px; }
.sb-titleband h1 { color: #fff; margin: 4px 0 0; font-size: 1.8rem; }
.sb-titleband__eyebrow { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--sb-gold); font-weight: 600; }
.sb-breadcrumb { font-size: .82rem; color: rgba(255, 255, 255, .72); margin: 0; }
.sb-breadcrumb a { color: #fff; }
@media (max-width: 600px) { .sb-titleband h1 { font-size: 1.4rem; } }

/* ---------- Layout ---------- */
.sb-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; padding-top: 28px; padding-bottom: 50px; }
.sb-layout--full { grid-template-columns: minmax(0, 1fr); }
@media (max-width: 960px) { .sb-layout { grid-template-columns: minmax(0, 1fr); } }

.sb-card, .sb-section {
	background: var(--sb-card); border: 1px solid var(--sb-border); border-radius: var(--sb-radius);
	box-shadow: var(--sb-shadow); padding: 26px 28px; margin: 0 0 24px;
}
@media (max-width: 600px) { .sb-card, .sb-section { padding: 20px 18px; } }
.sb-section > :first-child, .sb-entry > :first-child { margin-top: 0; }
.sb-section > :last-child, .sb-entry > :last-child { margin-bottom: 0; }
.sb-section h2 { font-size: 1.3rem; position: relative; padding-bottom: 10px; }
.sb-section h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 48px; height: 3px; background: var(--sb-teal); border-radius: 2px; }
.sb-entry ul, .sb-entry ol { padding-left: 1.3em; }
.sb-entry li { margin-bottom: .35em; }
.sb-entry .wp-block-buttons { margin: 1.2em 0; }
.sb-eyebrow { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--sb-teal-dark); font-weight: 600; margin-bottom: 2px; }

/* Lists of posts (news, archives, search) */
.sb-list-item { padding: 18px 0; border-bottom: 1px solid var(--sb-border); }
.sb-list-item:first-child { padding-top: 0; }
.sb-list-item:last-child { border-bottom: 0; padding-bottom: 0; }
.sb-list-item h2 { font-size: 1.1rem; margin: 0 0 4px; }
.sb-list-item h2 a { color: var(--sb-navy); }
.sb-meta { font-size: .82rem; color: var(--sb-muted); margin-bottom: 6px; }
.sb-entry .sb-featured { margin: 0 0 18px; border-radius: var(--sb-radius); overflow: hidden; }

.navigation.pagination, .post-navigation { margin-top: 20px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 6px; }
.page-numbers {
	display: inline-block; min-width: 38px; padding: 7px 12px; text-align: center;
	border: 1px solid var(--sb-border); border-radius: 6px; background: #fff; color: var(--sb-navy);
}
.page-numbers.current { background: var(--sb-teal); border-color: var(--sb-teal); color: #fff; }
.post-navigation .nav-links { justify-content: space-between; }

/* ---------- Sidebar ---------- */
.sb-sidebar .sb-box {
	background: #fff; border: 1px solid var(--sb-border); border-radius: var(--sb-radius);
	box-shadow: var(--sb-shadow); margin-bottom: 18px; overflow: hidden;
}
.sb-box__title, .sb-box .widget-title, .sb-box .wp-block-heading:first-child {
	margin: 0; background: var(--sb-teal); color: #fff; font-family: var(--sb-font);
	font-size: .8rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: 10px 16px;
}
.sb-box ul { list-style: none; margin: 0; padding: 6px 0; }
.sb-box li a {
	display: block; padding: 7px 16px; color: var(--sb-text); font-size: .89rem;
	border-left: 3px solid transparent; text-decoration: none;
}
.sb-box li a:hover { background: var(--sb-teal-soft); border-left-color: var(--sb-teal); color: var(--sb-teal-dark); }
.sb-box > :not(.sb-box__title):not(ul):not(.widget-title) { padding-left: 16px; padding-right: 16px; }
.sb-box > p:last-child { padding-bottom: 12px; }
.sb-box__note { font-size: .85rem; color: var(--sb-muted); padding: 10px 16px; margin: 0; }
.sb-box--cta { background: var(--sb-navy) !important; color: #fff; padding: 20px 18px; border: 0 !important; }
.sb-box--cta h3 { color: #fff; margin: 0 0 6px; font-size: 1.05rem; }
.sb-box--cta p { color: rgba(255, 255, 255, .8); font-size: .88rem; padding: 0 !important; }

/* ---------- Footer ---------- */
.site-footer { background: var(--sb-navy); color: rgba(255, 255, 255, .78); font-size: .89rem; }
.site-footer__grid { display: grid; grid-template-columns: 1.35fr 1fr 1.25fr 1.2fr; gap: 32px; padding-top: 44px; padding-bottom: 30px; }
.site-footer h4 { color: #fff; font-size: .86rem; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 14px; font-family: var(--sb-font); }
.site-footer a { color: #fff; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 7px; }
.site-footer .brand-name { color: #fff; font-size: 1.15rem; }
.site-footer .brand-sub { color: var(--sb-teal-light); }
.site-footer .site-branding { margin-bottom: 14px; }
.sb-facts li span { color: rgba(255, 255, 255, .6); }
.site-footer__bottom { border-top: 1px solid rgba(255, 255, 255, .12); }
.site-footer__bottom .sb-container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 16px; padding-bottom: 16px; font-size: .8rem; }
@media (max-width: 900px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .site-footer__grid { grid-template-columns: 1fr; } }

/* ---------- 404 / search form ---------- */
.search-form { display: flex; gap: 8px; }
.search-form label { flex: 1; }
.alignwide { max-width: 100%; }
.alignfull { max-width: none; }
.wp-block-image img { border-radius: 6px; }