/*
Theme Name: ChhatSolar
Theme URI: https://chhatsolar.in/
Author: ChhatSolar editorial team
Author URI: https://chhatsolar.in/about/
Description: Classic, accessible, SEO-focused theme for ChhatSolar, an independent, non-commercial guide to residential rooftop solar for Noida and Greater Noida homes (student SEO project, Bennett University, CSET489). Built-in title, meta description, canonical, Open Graph and JSON-LD output switch off automatically when Rank Math or Yoast SEO is active. Includes a progressive-enhancement solar cost calculator ([chhatsolar_calculator]).
Version: 1.0.0
Requires at least: 6.8
Tested up to: 7.1
Requires PHP: 8.1
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: chhatsolar
Tags: blog, education, one-column, two-columns, custom-menu, accessibility-ready, translation-ready

Bundled font: Source Serif 4 (variable, latin + latin-ext), SIL Open Font License 1.1 - see assets/fonts/OFL.txt.
*/

/* ==========================================================================
   1. Tokens
   ========================================================================== */
:root {
	--cs-navy: #0f2a44;          /* brand ink: headings, header, primary buttons */
	--cs-navy-2: #183a5a;        /* hover shade */
	--cs-text: #1d2b3a;          /* body text (13.5:1 on paper) */
	--cs-muted: #4d5b69;         /* secondary text (6.5:1 on paper) */
	--cs-link: #1b4f7a;          /* links (8.6:1 on white) */
	--cs-paper: #f7f8f5;         /* off-white page background */
	--cs-surface: #ffffff;       /* raised surfaces */
	--cs-line: #d8dde2;          /* hairlines */
	--cs-line-strong: #b9c2cb;
	--cs-sun: #f2a900;           /* saffron accent - fills and marks only, never text on light */
	--cs-sun-tint: #fdf3d6;
	--cs-sun-ink: #8a5d00;       /* saffron family text colour, 5.4:1 on paper */
	--cs-green: #17583a;         /* key takeaway */
	--cs-green-line: #2e8a5f;
	--cs-green-tint: #e7f2ec;
	--cs-on-navy: #ffffff;
	--cs-on-navy-muted: #c9d3dd; /* 9.6:1 on navy */

	--cs-serif: "Source Serif 4", "Source Serif Pro", Georgia, Cambria, "Times New Roman", serif;
	--cs-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;

	--cs-radius: 10px;
	--cs-radius-sm: 6px;
	--cs-gutter: 1rem;
	--cs-container: 72rem;
	--cs-measure: 41rem;         /* ~68 characters of serif body text */
	--cs-space-1: 0.5rem;
	--cs-space-2: 1rem;
	--cs-space-3: 1.5rem;
	--cs-space-4: 2.5rem;
	--cs-space-5: 4rem;
}

@media (min-width: 40em) {
	:root { --cs-gutter: 1.5rem; }
}

/* ==========================================================================
   2. Font (self-hosted, variable weight; font-display swap)
   ========================================================================== */
@font-face {
	font-family: "Source Serif 4";
	font-style: normal;
	font-weight: 200 900;
	font-display: swap;
	src: url("assets/fonts/source-serif-4-latin-wght-normal.woff2") format("woff2");
	unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
	font-family: "Source Serif 4";
	font-style: normal;
	font-weight: 200 900;
	font-display: swap;
	src: url("assets/fonts/source-serif-4-latin-ext-wght-normal.woff2") format("woff2");
	unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
	font-family: "Source Serif 4";
	font-style: italic;
	font-weight: 200 900;
	font-display: swap;
	src: url("assets/fonts/source-serif-4-latin-wght-italic.woff2") format("woff2");
	unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ==========================================================================
   3. Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
	-webkit-text-size-adjust: 100%;
	text-size-adjust: 100%;
	scroll-padding-top: 1.5rem;
}

body {
	margin: 0;
	background: var(--cs-paper);
	color: var(--cs-text);
	font-family: var(--cs-sans);
	font-size: 1rem;
	line-height: 1.6;
	overflow-wrap: break-word;
	-webkit-font-smoothing: antialiased;
}

img, svg, video { max-width: 100%; height: auto; }
img { display: block; }

h1, h2, h3, h4 {
	font-family: var(--cs-serif);
	color: var(--cs-navy);
	font-weight: 620;
	line-height: 1.2;
	letter-spacing: -0.01em;
	margin: 0 0 0.5em;
	text-wrap: balance;
}
h1 { font-size: clamp(2.125rem, 1.55rem + 2.4vw, 3.25rem); line-height: 1.1; letter-spacing: -0.02em; font-weight: 650; }
h2 { font-size: clamp(1.5rem, 1.3rem + 0.8vw, 1.9rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.0625rem; }

p { margin: 0 0 1em; }

a { color: var(--cs-link); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--cs-navy); text-decoration-thickness: 2px; text-decoration-color: var(--cs-sun); }

:focus-visible {
	outline: 3px solid var(--cs-navy);
	outline-offset: 2px;
	box-shadow: 0 0 0 6px var(--cs-sun);
	border-radius: 2px;
}
.site-footer :focus-visible,
.hero :focus-visible {
	outline-color: var(--cs-sun);
	box-shadow: none;
}

hr { border: 0; border-top: 1px solid var(--cs-line); margin: var(--cs-space-4) 0; }

.screen-reader-text {
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute !important;
	width: 1px;
	word-wrap: normal !important;
}

.skip-link {
	position: absolute;
	left: 0.75rem;
	top: -10rem;
	z-index: 100;
	padding: 0.75rem 1rem;
	background: var(--cs-navy);
	color: #fff;
	font-weight: 600;
	border-radius: var(--cs-radius-sm);
	text-decoration: none;
}
.skip-link:focus { top: 0.75rem; color: #fff; }

.container {
	width: 100%;
	max-width: var(--cs-container);
	margin-inline: auto;
	padding-inline: var(--cs-gutter);
}

/* Buttons */
.button,
button.button,
input[type="submit"].button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	min-height: 2.875rem;
	padding: 0.6rem 1.15rem;
	border: 2px solid var(--cs-navy);
	border-radius: var(--cs-radius-sm);
	background: var(--cs-navy);
	color: #fff;
	font: 600 1rem/1.2 var(--cs-sans);
	text-decoration: none;
	cursor: pointer;
}
.button:hover { background: var(--cs-navy-2); border-color: var(--cs-navy-2); color: #fff; text-decoration: none; }
.button--ghost { background: transparent; color: var(--cs-navy); }
.button--ghost:hover { background: var(--cs-navy); color: #fff; }
.button--sun { background: var(--cs-sun); border-color: var(--cs-sun); color: var(--cs-navy); }
.button--sun:hover { background: #ffc233; border-color: #ffc233; color: var(--cs-navy); }
.button--on-navy { background: transparent; border-color: var(--cs-on-navy-muted); color: #fff; }
.button--on-navy:hover { background: #fff; border-color: #fff; color: var(--cs-navy); }

/* ==========================================================================
   4. Header + navigation
   ========================================================================== */
.site-header {
	background: var(--cs-surface);
	border-bottom: 1px solid var(--cs-line);
}
.site-header__inner {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.5rem 1.5rem;
	min-height: 4.25rem;
	padding-block: 0.5rem;
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.55rem;
	color: var(--cs-navy);
	text-decoration: none;
	font-family: var(--cs-serif);
	font-weight: 640;
	font-size: 1.4rem;
	letter-spacing: -0.015em;
	line-height: 1;
}
.brand:hover { color: var(--cs-navy); text-decoration: none; }
.brand__mark { width: 2.25rem; height: 2.25rem; flex: none; }

/* Mobile-first: the menu is a native <details> disclosure, so it works with no JS.
   site.js only adds Escape-to-close and opens it permanently on wide screens. */
.primary-nav { font-weight: 560; }
.nav-disclosure > summary {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	min-height: 2.75rem;
	padding: 0.45rem 0.85rem;
	border: 1px solid var(--cs-line-strong);
	border-radius: var(--cs-radius-sm);
	color: var(--cs-navy);
	cursor: pointer;
	list-style: none;
	user-select: none;
}
.nav-disclosure > summary::-webkit-details-marker { display: none; }
.nav-disclosure > summary .icon-close { display: none; }
.nav-disclosure[open] > summary .icon-open { display: none; }
.nav-disclosure[open] > summary .icon-close { display: inline; }

.menu-primary {
	list-style: none;
	margin: 0;
	padding: 0.5rem 0 0.75rem;
}
.menu-primary a {
	display: block;
	padding: 0.7rem 0.25rem;
	border-bottom: 1px solid var(--cs-line);
	color: var(--cs-navy);
	text-decoration: none;
}
.menu-primary a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); text-decoration-thickness: 3px; }
.menu-primary .current-menu-item > a,
.menu-primary .current-menu-ancestor > a,
.menu-primary .current-post-ancestor > a,
.menu-primary .current-category-ancestor > a,
.menu-primary a[aria-current="page"] {
	text-decoration: underline;
	text-decoration-color: var(--cs-sun);
	text-decoration-thickness: 3px;
	text-underline-offset: 0.35em;
}

.site-header { position: relative; }
@media (max-width: 59.99em) {
	/* Opened menu drops down as a full-width panel under the header bar. */
	.menu-primary {
		position: absolute;
		z-index: 50;
		top: 100%;
		left: 0;
		right: 0;
		padding: 0.25rem var(--cs-gutter) 1rem;
		background: var(--cs-surface);
		border-bottom: 1px solid var(--cs-line);
		box-shadow: 0 12px 24px -12px rgba(15, 42, 68, 0.35);
	}
	.menu-primary li:last-child a { border-bottom: 0; }
}

@media (min-width: 60em) {
	.primary-nav { margin-left: auto; }
	.js .nav-disclosure > summary { display: none; }
	.menu-primary { display: flex; flex-wrap: wrap; gap: 0.25rem 1.4rem; padding: 0; }
	.menu-primary a { padding: 0.5rem 0; border: 0; }
}

/* ==========================================================================
   5. Hero (front page)
   ========================================================================== */
.hero {
	background: var(--cs-navy);
	color: var(--cs-on-navy);
	overflow: hidden;
}
.hero__inner {
	display: grid;
	gap: var(--cs-space-3);
	padding-block: var(--cs-space-4) 0;
}
.hero__title {
	color: #fff;
	font-size: clamp(2.25rem, 1.5rem + 3.3vw, 3.9rem);
	max-width: 18ch;
	margin-bottom: 0.4em;
}
.hero__subtitle {
	font-size: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
	color: var(--cs-on-navy-muted);
	max-width: 36rem;
	margin-bottom: var(--cs-space-3);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: var(--cs-space-3); }
.hero__art { align-self: end; margin-inline: calc(var(--cs-gutter) * -1); }
.hero__art svg { display: block; width: 100%; height: auto; }
.hero__note {
	font-size: 0.9rem;
	color: var(--cs-on-navy-muted);
	margin: 0;
	padding-bottom: var(--cs-space-3);
}

@media (min-width: 60em) {
	.hero__inner {
		grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
		align-items: end;
		padding-top: var(--cs-space-5);
	}
	.hero__text { padding-bottom: var(--cs-space-4); }
	.hero__art { margin-inline: 0 calc(var(--cs-gutter) * -1); }
}

/* The one moving thing on the site: the morning part of the sun's path draws once on load. */
@media (prefers-reduced-motion: no-preference) {
	.sunpath__trail { stroke-dasharray: 320; stroke-dashoffset: 320; animation: cs-trail 1.4s cubic-bezier(.3, .6, .2, 1) forwards 0.2s; }
	.sunpath__sun { animation: cs-sun-in 0.6s ease-out both 1.2s; }
}
@keyframes cs-trail { to { stroke-dashoffset: 0; } }
@keyframes cs-sun-in { from { opacity: 0; } to { opacity: 1; } }

/* ==========================================================================
   6. Page structure, breadcrumbs, entry header
   ========================================================================== */
.site-main { display: block; padding-bottom: var(--cs-space-5); }
.site-main:focus { outline: none; }

.breadcrumbs { font-size: 0.9rem; color: var(--cs-muted); padding-top: var(--cs-space-3); }
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.15rem 0; }
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before {
	content: "";
	width: 0.4rem;
	height: 0.4rem;
	margin: 0 0.6rem 0 0.45rem;
	border-top: 1.5px solid var(--cs-line-strong);
	border-right: 1.5px solid var(--cs-line-strong);
	transform: rotate(45deg);
}
.breadcrumbs a { color: var(--cs-muted); }
.breadcrumbs [aria-current="page"] { color: var(--cs-text); }

.entry-header { padding-block: var(--cs-space-3) var(--cs-space-3); max-width: 50rem; }
.entry-header--wide { max-width: none; }
.entry-header .lede {
	font-family: var(--cs-serif);
	font-size: clamp(1.125rem, 1.05rem + 0.4vw, 1.3rem);
	color: var(--cs-muted);
	max-width: var(--cs-measure);
	margin: 0;
}

.entry-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem 1.5rem;
	margin: 0.75rem 0 0;
	padding: 0;
	font-size: 0.9375rem;
	color: var(--cs-muted);
}
.entry-meta div { display: flex; gap: 0.35rem; }
.entry-meta dt { font-weight: 600; color: var(--cs-text); }
.entry-meta dd { margin: 0; }

.featured-figure { margin: 0 0 var(--cs-space-4); max-width: 54rem; }
.featured-figure img { width: 100%; border-radius: var(--cs-radius); border: 1px solid var(--cs-line); background: var(--cs-surface); }
.featured-figure figcaption { font-size: 0.875rem; color: var(--cs-muted); margin-top: 0.5rem; }

/* Article layout: content + table of contents rail */
.article-layout { display: grid; gap: var(--cs-space-3); }
@media (min-width: 64em) {
	.article-layout { grid-template-columns: 15rem minmax(0, var(--cs-measure)); gap: 3.5rem; }
	.article-layout--no-toc { grid-template-columns: minmax(0, var(--cs-measure)); }
	.article-layout > .toc { grid-column: 1; grid-row: 1; }
	.article-layout > .entry-content { grid-column: 2; grid-row: 1; }
	.article-layout--no-toc > .entry-content { grid-column: 1; }
}

/* Table of contents: a <details> on small screens, an always-open rail on wide ones. */
.toc {
	font-size: 0.9375rem;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius);
	align-self: start;
}
.toc > summary,
.toc__title {
	display: block;
	padding: 0.85rem 1rem;
	font-weight: 650;
	color: var(--cs-navy);
	cursor: pointer;
}
.toc > summary { list-style: none; position: relative; }
.toc > summary::-webkit-details-marker { display: none; }
.toc > summary::after {
	content: "";
	position: absolute;
	right: 1.1rem;
	top: 1.15rem;
	width: 0.5rem;
	height: 0.5rem;
	border-right: 2px solid var(--cs-navy);
	border-bottom: 2px solid var(--cs-navy);
	transform: rotate(45deg);
}
.toc[open] > summary::after { transform: rotate(-135deg); top: 1.35rem; }
.toc ol { margin: 0; padding: 0 1rem 1rem 2.1rem; }
.toc li { margin: 0.3rem 0; padding-left: 0.15rem; }
.toc li::marker { color: var(--cs-muted); font-variant-numeric: tabular-nums; }
.toc a { color: var(--cs-text); text-decoration: none; }
.toc a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); }
@media (min-width: 64em) {
	.toc { position: sticky; top: 1.5rem; background: transparent; border: 0; border-left: 3px solid var(--cs-sun); border-radius: 0; }
	.toc > summary { pointer-events: none; padding: 0 0 0.5rem 1rem; }
	.toc > summary::after { display: none; }
	.toc ol { padding: 0 0 0 2.1rem; }
}

/* ==========================================================================
   7. Entry content (article prose)
   ========================================================================== */
.entry-content {
	font-family: var(--cs-serif);
	font-size: 1.125rem;
	line-height: 1.68;
	max-width: var(--cs-measure);
	min-width: 0;
}
.entry-content > * + * { margin-top: 0; }
.entry-content h2 { margin-top: 2.2em; scroll-margin-top: 1.5rem; }
.entry-content h3 { margin-top: 1.8em; font-size: 1.3rem; }
.entry-content h4 { margin-top: 1.5em; }
.entry-content > :first-child { margin-top: 0; }
.entry-content p,
.entry-content ul,
.entry-content ol,
.entry-content dl { margin: 0 0 1.1em; }
.entry-content ul,
.entry-content ol { padding-left: 1.4em; }
.entry-content li { margin: 0.3em 0; }
.entry-content li::marker { color: var(--cs-navy); }
.entry-content strong { font-weight: 650; color: var(--cs-navy); }
.entry-content a { color: var(--cs-link); }

.entry-content blockquote {
	margin: 1.5em 0;
	padding: 0.25em 0 0.25em 1.25em;
	border-left: 3px solid var(--cs-line-strong);
	color: var(--cs-muted);
	font-style: italic;
}

.entry-content figure { margin: 1.75em 0; }
.entry-content figure img {
	border-radius: var(--cs-radius-sm);
	border: 1px solid var(--cs-line);
	background: var(--cs-surface);
	width: 100%;
	height: auto;
}
.entry-content figcaption,
.wp-caption-text {
	font-family: var(--cs-sans);
	font-size: 0.875rem;
	line-height: 1.5;
	color: var(--cs-muted);
	margin-top: 0.6rem;
}

/* Tables scroll inside their wrapper on narrow screens - never the page. */
.entry-content .table-wrap,
.entry-content figure.wp-block-table {
	max-width: 100%;
	overflow-x: auto;
	margin: 1.5em 0;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius-sm);
}
.entry-content table {
	width: 100%;
	border-collapse: collapse;
	margin: 1.5em 0;
	font-family: var(--cs-sans);
	font-size: 0.9375rem;
	line-height: 1.45;
	background: var(--cs-surface);
}
.entry-content figure.wp-block-table table,
.entry-content .table-wrap table { margin: 0; }
.entry-content caption { text-align: left; padding: 0.75rem 0.85rem 0; font-weight: 600; color: var(--cs-navy); }
.entry-content th,
.entry-content td { padding: 0.6rem 0.85rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--cs-line); }
.entry-content thead th { background: #eef1f4; color: var(--cs-navy); font-weight: 650; white-space: nowrap; }
.entry-content tbody tr:last-child td,
.entry-content tbody tr:last-child th { border-bottom: 0; }
.entry-content td { font-variant-numeric: tabular-nums; }

.entry-content code { font-size: 0.9em; background: #eef1f4; padding: 0.1em 0.35em; border-radius: 4px; }

/* Key takeaway: the single "success green" device on the site. */
.entry-content .key-takeaway,
.entry-content .takeaway,
.entry-content .cs-takeaway,
.entry-content .callout--takeaway,
.entry-content .key-takeaways {
	margin: 1.75em 0;
	padding: 1rem 1.15rem 0.35rem;
	background: var(--cs-green-tint);
	border-left: 5px solid var(--cs-green-line);
	border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0;
	font-family: var(--cs-sans);
	font-size: 1.0625rem;
	line-height: 1.6;
	color: #12301f;
}
.entry-content .key-takeaway > :is(h2, h3, h4, p:first-child > strong:only-child),
.entry-content .takeaway > :is(h2, h3, h4),
.entry-content .cs-takeaway > :is(h2, h3, h4),
.entry-content .callout--takeaway > :is(h2, h3, h4),
.entry-content .key-takeaways > :is(h2, h3, h4) {
	margin-top: 0;
	font-family: var(--cs-sans);
	font-size: 1.0625rem;
	font-weight: 700;
	letter-spacing: 0;
	color: var(--cs-green);
}
.entry-content :is(.key-takeaway, .takeaway, .cs-takeaway, .callout--takeaway, .key-takeaways) strong { color: var(--cs-green); }

/* Neutral notes / cautions (navy and saffron, not green). */
.entry-content .note,
.entry-content .callout,
.entry-content .cs-note,
.entry-content .info {
	margin: 1.75em 0;
	padding: 1rem 1.15rem 0.35rem;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-left: 5px solid var(--cs-navy);
	border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0;
	font-family: var(--cs-sans);
	font-size: 1rem;
}
.entry-content .warning,
.entry-content .caution,
.entry-content .cs-warning {
	margin: 1.75em 0;
	padding: 1rem 1.15rem 0.35rem;
	background: var(--cs-sun-tint);
	border-left: 5px solid var(--cs-sun);
	border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0;
	font-family: var(--cs-sans);
	font-size: 1rem;
	color: #3a2a00;
}
.entry-content :is(.note, .callout, .cs-note, .info, .warning, .caution, .cs-warning) > :is(h2, h3, h4) {
	margin-top: 0;
	font-family: var(--cs-sans);
	font-size: 1.0625rem;
	font-weight: 700;
	letter-spacing: 0;
}

/* Content package conventions (website/content/pages/*.html) */
.entry-content .cs-lead {
	font-size: clamp(1.1875rem, 1.12rem + 0.35vw, 1.3125rem);
	line-height: 1.6;
	color: var(--cs-text);
	margin-bottom: 1.25em;
}
.entry-content .cs-reviewed {
	font-family: var(--cs-sans);
	font-size: 0.9375rem;
	line-height: 1.5;
	color: var(--cs-muted);
	padding: 0.65rem 0.9rem;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-left: 3px solid var(--cs-sun);
	border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0;
}
.entry-content .cs-reviewed strong { color: var(--cs-text); }
.entry-content .cs-sources {
	margin-top: 2.5em;
	padding-top: 1rem;
	border-top: 1px solid var(--cs-line);
	font-family: var(--cs-sans);
	font-size: 0.875rem;
	line-height: 1.6;
	color: var(--cs-muted);
}
.entry-content .cs-sources strong { color: var(--cs-text); }
.entry-content .cs-cards { list-style: none; padding: 0; margin: 1.25em 0 2em; display: grid; gap: 0.85rem; }
@media (min-width: 40em) { .entry-content .cs-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.entry-content .cs-card {
	position: relative;
	margin: 0;
	padding: 1rem 1.1rem 1.05rem;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius);
}
.entry-content .cs-card:hover,
.entry-content .cs-card:focus-within { border-color: var(--cs-navy); }
.entry-content .cs-card h3 { margin: 0 0 0.35rem; font-size: 1.15rem; }
.entry-content .cs-card h3 a { color: var(--cs-navy); text-decoration: none; }
.entry-content .cs-card h3 a::after { content: ""; position: absolute; inset: 0; }
.entry-content .cs-card h3 a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); }
.entry-content .cs-card p { margin: 0; font-family: var(--cs-sans); font-size: 0.95rem; line-height: 1.5; color: var(--cs-muted); }
.home-content .entry-content { max-width: 52rem; }
.home-content .entry-content > :not(.cs-cards):not(.cs-intro) { max-width: var(--cs-measure); }
.home-content .entry-content .cs-intro > * { max-width: var(--cs-measure); }

/* figure.wp-block-table: caption below the table, inside the same scroll box */
.entry-content figure.wp-block-table figcaption { padding: 0.6rem 0.85rem 0.75rem; margin: 0; border-top: 1px solid var(--cs-line); }

/* FAQ written as H2 + H3 questions + answers */
.entry-content .faq h3 {
	margin: 0;
	padding-top: 1.15rem;
	border-top: 1px solid var(--cs-line);
	font-family: var(--cs-sans);
	font-size: 1.0625rem;
	font-weight: 700;
	letter-spacing: 0;
	line-height: 1.4;
}
.entry-content .faq h2 + h3 { border-top: 0; padding-top: 0.25rem; }
.entry-content .faq h3 + p { margin-top: 0.4rem; }
.entry-content .faq > p:last-child { margin-bottom: 0; }

/* Key takeaways section: list inside the green box */
.entry-content .key-takeaway ul,
.entry-content .key-takeaway ol { padding-left: 1.2em; }
.entry-content .key-takeaway li::marker { color: var(--cs-green-line); }

/* Sources / references lists */
.entry-content .sources,
.entry-content .references { font-family: var(--cs-sans); font-size: 0.9375rem; }

/* FAQ written in the content as <details>/<summary> (rendered once - the theme never duplicates it). */
.entry-content details {
	margin: 0 0 0.75rem;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius-sm);
	font-family: var(--cs-sans);
	font-size: 1.0625rem;
}
.entry-content details > summary {
	cursor: pointer;
	padding: 0.85rem 2.75rem 0.85rem 1rem;
	font-weight: 650;
	color: var(--cs-navy);
	list-style: none;
	position: relative;
}
.entry-content details > summary::-webkit-details-marker { display: none; }
.entry-content details > summary::after {
	content: "";
	position: absolute;
	right: 1.15rem;
	top: 1.2rem;
	width: 0.5rem;
	height: 0.5rem;
	border-right: 2px solid var(--cs-navy);
	border-bottom: 2px solid var(--cs-navy);
	transform: rotate(45deg);
}
.entry-content details[open] > summary::after { transform: rotate(-135deg); top: 1.4rem; }
.entry-content details > summary :is(h2, h3, h4) { display: inline; font: inherit; color: inherit; margin: 0; }
.entry-content details > :not(summary) { padding-inline: 1rem; }
.entry-content details > :last-child { padding-bottom: 0.5rem; }

/* ==========================================================================
   8. Cards, tiles and lists of guides
   ========================================================================== */
.section { padding-top: var(--cs-space-5); }
.section__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem 1.5rem; margin-bottom: var(--cs-space-3); }
.section__head h2 { margin: 0; }
.section__head p { margin: 0; color: var(--cs-muted); }
.section__intro { max-width: var(--cs-measure); color: var(--cs-muted); margin: -0.75rem 0 1.25rem; }

.guide-grid {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: var(--cs-space-3);
}
@media (min-width: 40em) { .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 64em) { .guide-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.guide-card {
	position: relative;
	display: flex;
	flex-direction: column;
	height: 100%;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius);
	overflow: hidden;
}
.guide-card:hover { border-color: var(--cs-navy); }
.guide-card:focus-within { border-color: var(--cs-navy); }
.guide-card__body { display: flex; flex-direction: column; gap: 0.5rem; padding: 1.1rem 1.15rem 1.2rem; flex: 1; }
.guide-card__topic { font-size: 0.875rem; font-weight: 600; color: var(--cs-sun-ink); margin: 0; }
.guide-card__title { font-size: 1.25rem; margin: 0; }
.guide-card__title a { color: var(--cs-navy); text-decoration: none; }
.guide-card__title a::after { content: ""; position: absolute; inset: 0; } /* whole card is the link target */
.guide-card__title a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); }
.guide-card__excerpt { margin: 0; color: var(--cs-muted); font-size: 0.975rem; }
.guide-card__date { margin: auto 0 0; padding-top: 0.5rem; font-size: 0.85rem; color: var(--cs-muted); }

/* Detailed list rows (archives, Guides page) */
.guide-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--cs-line); }
.guide-row {
	display: grid;
	gap: 0.5rem 2rem;
	padding: var(--cs-space-3) 0;
	border-bottom: 1px solid var(--cs-line);
}
@media (min-width: 48em) {
	.guide-row { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
}
.guide-row__title { font-size: clamp(1.25rem, 1.15rem + 0.4vw, 1.45rem); margin: 0 0 0.35rem; }
.guide-row__title a { color: var(--cs-navy); text-decoration: none; }
.guide-row__title a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); }
.guide-row__excerpt { margin: 0 0 0.4rem; }
.guide-row__date { margin: 0; font-size: 0.875rem; color: var(--cs-muted); }
.guide-row__sections { font-size: 0.9375rem; color: var(--cs-muted); }
.guide-row__sections p { margin: 0 0 0.25rem; font-weight: 600; color: var(--cs-text); }
.guide-row__sections ul { margin: 0; padding-left: 1.1rem; }
.guide-row__sections li { margin: 0.15rem 0; }

/* Topic tiles */
.topic-tiles { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--cs-space-2); }
@media (min-width: 48em) { .topic-tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.topic-tile {
	position: relative;
	height: 100%;
	padding: 1.25rem 1.25rem 1.1rem;
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-top: 4px solid var(--cs-navy);
	border-radius: 0 0 var(--cs-radius) var(--cs-radius);
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
}
.topic-tile:hover { border-color: var(--cs-navy); }
.topic-tile h3 { margin: 0; font-size: 1.35rem; }
.topic-tile h3 a { color: var(--cs-navy); text-decoration: none; }
.topic-tile h3 a::after { content: ""; position: absolute; inset: 0; }
.topic-tile h3 a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); }
.topic-tile p { margin: 0; color: var(--cs-muted); font-size: 0.975rem; }
.topic-tile__count { margin-top: auto !important; padding-top: 0.4rem; font-weight: 600; color: var(--cs-text) !important; font-size: 0.9rem !important; }

/* Calculator teaser band */
.calc-teaser {
	display: grid;
	gap: var(--cs-space-3);
	padding: var(--cs-space-4) var(--cs-space-3);
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-top: 4px solid var(--cs-sun);
	border-radius: var(--cs-radius);
}
.calc-teaser h2 { margin-bottom: 0.35em; }
.calc-teaser p { color: var(--cs-muted); max-width: 34rem; }
.calc-teaser__inputs { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; align-content: center; }
.calc-teaser__inputs li {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 1rem;
	padding: 0.65rem 0.9rem;
	background: var(--cs-paper);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius-sm);
	font-size: 0.975rem;
}
.calc-teaser__inputs span:last-child { color: var(--cs-muted); font-size: 0.875rem; text-align: right; }
@media (min-width: 56em) { .calc-teaser { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); padding: var(--cs-space-4); align-items: center; } }

/* Calculator page: prose keeps the reading measure, the calculator gets the full width. */
.entry-content--wide { max-width: none; }
.entry-content--wide > :not(.calc) { max-width: var(--cs-measure); }

/* Front page intro content */
.home-content { padding-top: var(--cs-space-4); }
.home-content .entry-content { max-width: 46rem; }

/* ==========================================================================
   9. Related, post navigation, pagination
   ========================================================================== */
.related { padding-top: var(--cs-space-5); }
.post-nav { margin-top: var(--cs-space-4); }
.post-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--cs-space-2); }
@media (min-width: 40em) { .post-nav ul { grid-template-columns: 1fr 1fr; } .post-nav__next { text-align: right; grid-column: 2; } }
.post-nav a {
	display: block;
	height: 100%;
	padding: 1rem 1.15rem;
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius);
	background: var(--cs-surface);
	text-decoration: none;
	color: var(--cs-navy);
}
.post-nav a:hover { border-color: var(--cs-navy); }
.post-nav__label { display: block; font-size: 0.875rem; color: var(--cs-muted); margin-bottom: 0.2rem; }
.post-nav__title { font-family: var(--cs-serif); font-weight: 620; font-size: 1.125rem; }

.pagination { margin-top: var(--cs-space-4); }
.pagination .nav-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.pagination .page-numbers {
	display: inline-flex;
	min-width: 2.75rem;
	min-height: 2.75rem;
	align-items: center;
	justify-content: center;
	padding: 0 0.75rem;
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius-sm);
	background: var(--cs-surface);
	text-decoration: none;
}
.pagination .current { background: var(--cs-navy); border-color: var(--cs-navy); color: #fff; }

/* ==========================================================================
   10. Search form, 404
   ========================================================================== */
.search-form { display: flex; flex-wrap: wrap; gap: 0.5rem; max-width: 34rem; align-items: flex-end; }
.search-form label { flex-basis: 100%; font-weight: 600; color: var(--cs-navy); }
.search-form input[type="search"] {
	flex: 1 1 14rem;
	min-width: 0;
	min-height: 2.875rem;
	padding: 0.55rem 0.8rem;
	border: 1.5px solid var(--cs-line-strong);
	border-radius: var(--cs-radius-sm);
	background: var(--cs-surface);
	font: inherit;
	color: var(--cs-text);
}
.search-form input[type="search"]:focus-visible { border-color: var(--cs-navy); }

.notice-box {
	padding: var(--cs-space-3);
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius);
	margin-bottom: var(--cs-space-3);
}
.notice-box > :last-child { margin-bottom: 0; }

.link-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--cs-line); }
.link-list li { border-bottom: 1px solid var(--cs-line); }
.link-list a { display: block; padding: 0.8rem 0; font-family: var(--cs-serif); font-size: 1.125rem; font-weight: 600; color: var(--cs-navy); text-decoration: none; }
.link-list a:hover { text-decoration: underline; text-decoration-color: var(--cs-sun); }
.link-list small { display: block; font-family: var(--cs-sans); font-weight: 400; font-size: 0.875rem; color: var(--cs-muted); }

.two-col { display: grid; gap: var(--cs-space-4); }
@media (min-width: 56em) { .two-col { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); } }

/* ==========================================================================
   11. Calculator ([chhatsolar_calculator])
   ========================================================================== */
.calc { margin: 2rem 0 0; font-family: var(--cs-sans); font-size: 1rem; line-height: 1.55; }
.entry-content .calc { max-width: none; }
.calc__grid { display: grid; gap: var(--cs-space-3); }
@media (min-width: 60em) { .calc__grid { grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); align-items: start; } }

.calc__form,
.calc__results,
.calc__assumptions {
	background: var(--cs-surface);
	border: 1px solid var(--cs-line);
	border-radius: var(--cs-radius);
	padding: 1.25rem;
}
@media (min-width: 40em) { .calc__form, .calc__results, .calc__assumptions { padding: 1.5rem; } }
.calc h2, .calc h3 { font-family: var(--cs-serif); }
.calc__form h2, .calc__results h2 { font-size: 1.4rem; margin: 0 0 1rem; }

.calc fieldset { border: 0; margin: 0 0 1.25rem; padding: 0; min-width: 0; }
.calc legend, .calc .field > label { display: block; font-weight: 650; color: var(--cs-navy); margin-bottom: 0.4rem; padding: 0; }
.calc .field { margin-bottom: 1.15rem; }
.calc .hint { display: block; font-size: 0.875rem; color: var(--cs-muted); margin-top: 0.3rem; }
.calc .choice-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.calc .choice {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.55rem 0.9rem;
	border: 1.5px solid var(--cs-line-strong);
	border-radius: var(--cs-radius-sm);
	cursor: pointer;
	background: var(--cs-paper);
	font-weight: 560;
}
.calc .choice:has(input:checked) { border-color: var(--cs-navy); background: #eef3f8; }
.calc .choice input { accent-color: var(--cs-navy); width: 1.05rem; height: 1.05rem; margin: 0; }
.calc .input-affix { display: flex; align-items: stretch; max-width: 20rem; }
.calc .input-affix span {
	display: inline-flex;
	align-items: center;
	padding: 0 0.75rem;
	background: #eef1f4;
	border: 1.5px solid var(--cs-line-strong);
	color: var(--cs-muted);
	font-size: 0.9375rem;
	white-space: nowrap;
}
.calc .input-affix span:first-child { border-right: 0; border-radius: var(--cs-radius-sm) 0 0 var(--cs-radius-sm); }
.calc .input-affix span:last-child { border-left: 0; border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0; }
.calc input[type="number"],
.calc select {
	width: 100%;
	min-width: 0;
	min-height: 2.875rem;
	padding: 0.5rem 0.75rem;
	border: 1.5px solid var(--cs-line-strong);
	border-radius: var(--cs-radius-sm);
	background: var(--cs-surface);
	font: inherit;
	font-variant-numeric: tabular-nums;
	color: var(--cs-text);
}
.calc .input-affix input { border-radius: 0; }
.calc .input-affix input:first-child { border-radius: var(--cs-radius-sm) 0 0 var(--cs-radius-sm); }
.calc .input-affix input:last-child { border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0; }
.calc select { max-width: 20rem; }
.calc input:focus-visible, .calc select:focus-visible { border-color: var(--cs-navy); }
.calc [aria-invalid="true"] { border-color: #b3261e; }
.calc .field-error { display: block; color: #b3261e; font-size: 0.9rem; margin-top: 0.3rem; font-weight: 600; }
.js .calc [data-mode-field][hidden] { display: none; }

/* Results: a worked "sheet" - every number shows how it was reached. */
.calc__results { border-top: 4px solid var(--cs-sun); }
.calc__results:focus { outline: none; }
.calc__empty { color: var(--cs-muted); margin: 0; }
.calc__sheet { margin: 0; }
.calc__line {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: 0.15rem 1rem;
	padding: 0.8rem 0;
	border-bottom: 1px dashed var(--cs-line-strong);
}
.calc__line:first-child { padding-top: 0; }
.calc__line dt { font-weight: 600; color: var(--cs-text); }
.calc__line dd { margin: 0; text-align: right; font-family: var(--cs-serif); font-weight: 650; font-size: 1.2rem; color: var(--cs-navy); font-variant-numeric: lining-nums tabular-nums; white-space: nowrap; }
.calc__line .calc__how { grid-column: 1 / -1; text-align: left; font-family: var(--cs-sans); font-weight: 400; font-size: 0.875rem; color: var(--cs-muted); white-space: normal; }
.calc__line--key dd { font-size: 1.6rem; }
.calc__line--net { border-bottom-style: solid; border-bottom-color: var(--cs-navy); border-bottom-width: 2px; }
@media (max-width: 26em) {
	.calc__line { grid-template-columns: 1fr; }
	.calc__line dd { text-align: left; white-space: normal; }
}
.calc__flag {
	margin: 1rem 0 0;
	padding: 0.75rem 0.9rem;
	background: var(--cs-sun-tint);
	border-left: 4px solid var(--cs-sun);
	border-radius: 0 var(--cs-radius-sm) var(--cs-radius-sm) 0;
	font-size: 0.9375rem;
	color: #3a2a00;
}
.calc__disclaimer {
	margin: 1.15rem 0 0;
	padding: 0.85rem 1rem;
	border: 2px solid var(--cs-navy);
	border-radius: var(--cs-radius-sm);
	font-weight: 650;
	color: var(--cs-navy);
}
.calc__disclaimer a { color: var(--cs-navy); }

.calc__assumptions { margin-top: var(--cs-space-3); }
.calc__assumptions h2 { font-size: 1.3rem; margin: 0 0 0.35rem; }
.calc__assumptions > p { color: var(--cs-muted); font-size: 0.9375rem; }
.calc__assumption-list { margin: 0; display: grid; gap: 0; }
@media (min-width: 48em) { .calc__assumption-list { grid-template-columns: 1fr 1fr; column-gap: 2rem; } }
.calc__assumption-list div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.55rem 0; border-bottom: 1px solid var(--cs-line); font-size: 0.9375rem; }
.calc__assumption-list dt { color: var(--cs-text); }
.calc__assumption-list dd { margin: 0; font-weight: 650; color: var(--cs-navy); text-align: right; font-variant-numeric: tabular-nums; }
.calc__status { display: inline-block; margin: 0.25rem 0 0.75rem; padding: 0.2rem 0.55rem; border-radius: 4px; font-size: 0.875rem; font-weight: 600; }
.calc__status--default { background: var(--cs-sun-tint); color: #5c3e00; }
.calc__status--verified { background: var(--cs-green-tint); color: var(--cs-green); }
.calc__sources-title { font-size: 1.05rem; margin: 1.25rem 0 0.25rem; }
.calc__sources { font-size: 0.875rem; color: var(--cs-muted); margin: 0.25rem 0 0; padding-left: 1.1rem; }
.calc__noscript { margin: 0 0 1rem; padding: 0.75rem 1rem; background: var(--cs-sun-tint); border-left: 4px solid var(--cs-sun); font-size: 0.9375rem; }

/* ==========================================================================
   12. Footer
   ========================================================================== */
.site-footer {
	background: var(--cs-navy);
	color: var(--cs-on-navy-muted);
	font-size: 0.9375rem;
	padding-block: var(--cs-space-4) var(--cs-space-3);
}
.site-footer a { color: #fff; text-decoration-color: rgba(255, 255, 255, 0.45); }
.site-footer a:hover { color: #fff; text-decoration-color: var(--cs-sun); }
.site-footer h2 { font-family: var(--cs-sans); font-size: 1rem; font-weight: 700; letter-spacing: 0; color: #fff; margin: 0 0 0.6rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 0 0 0.45rem; }
.footer-grid { display: grid; gap: var(--cs-space-3); }
@media (min-width: 40em) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 64em) { .footer-grid { grid-template-columns: 1.5fr repeat(4, minmax(0, 1fr)); gap: var(--cs-space-4); } }
.footer-brand .brand { color: #fff; margin-bottom: 0.85rem; }
.footer-brand p { margin: 0 0 0.75rem; max-width: 26rem; }
.footer-bottom {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 0.5rem 2rem;
	margin-top: var(--cs-space-4);
	padding-top: var(--cs-space-3);
	border-top: 1px solid rgba(255, 255, 255, 0.18);
	font-size: 0.875rem;
}
.footer-bottom p { margin: 0; }

/* ==========================================================================
   13. WordPress core classes
   ========================================================================== */
.alignleft { float: left; margin: 0.3em 1.5em 1em 0; }
.alignright { float: right; margin: 0.3em 0 1em 1.5em; }
.aligncenter { display: block; margin-inline: auto; }
.wp-caption { max-width: 100%; }
.sticky, .bypostauthor, .gallery-caption { /* required by theme check */ }

/* ==========================================================================
   14. Motion + print
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
@media (prefers-reduced-motion: no-preference) {
	html { scroll-behavior: smooth; }
}

@media print {
	.site-header, .site-footer, .toc, .post-nav, .related, .breadcrumbs, .skip-link, .hero__art { display: none !important; }
	body { background: #fff; color: #000; }
	.entry-content a::after { content: " (" attr(href) ")"; font-size: 0.8em; }
}