/* =========================================================
   CalculatorDekho — main.css
   Mobile-first, lightweight, no framework dependency.
   ========================================================= */

/* ---------- 1. Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

:root {
	--cd-primary: #1a73e8;
	--cd-primary-dark: #0f52ba;
	--cd-accent: #16a34a;
	--cd-text: #1f2933;
	--cd-text-light: #52606d;
	--cd-bg: #ffffff;
	--cd-bg-alt: #f5f7fa;
	--cd-border: #e2e8f0;
	--cd-error: #d92d20;
	--cd-radius: 10px;
	--cd-max-width: 1140px;
	--cd-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Devanagari", Roboto, Arial, sans-serif;
}

html { scroll-behavior: smooth; }

body {
	margin: 0;
	font-family: var(--cd-font);
	color: var(--cd-text);
	background: var(--cd-bg);
	line-height: 1.6;
	font-size: 16px;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}

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

a { color: var(--cd-primary); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 0.6em; color: var(--cd-text); }
h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); }
h2 { font-size: clamp(1.3rem, 4vw, 1.8rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }

.container {
	width: 100%;
	max-width: var(--cd-max-width);
	margin: 0 auto;
	padding: 0 1rem;
}

.screen-reader-text {
	position: absolute !important;
	width: 1px; height: 1px;
	overflow: hidden;
	clip: rect(1px, 1px, 1px, 1px);
	white-space: nowrap;
}

.skip-link {
	position: absolute;
	top: -40px;
	left: 0;
	background: var(--cd-primary);
	color: #fff;
	padding: 0.6em 1em;
	z-index: 1000;
}
.skip-link:focus {
	top: 0;
}

/* Visible focus states everywhere — accessibility requirement */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
	outline: 3px solid var(--cd-primary);
	outline-offset: 2px;
}

/* ---------- 2. Header ---------- */
.site-header {
	border-bottom: 1px solid var(--cd-border);
	background: var(--cd-bg);
	position: sticky;
	top: 0;
	z-index: 100;
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.75rem 1rem;
	flex-wrap: wrap;
}

.site-title {
	font-size: 1.3rem;
	font-weight: 800;
	color: var(--cd-primary-dark);
}
.site-title:hover, .site-title:focus { text-decoration: none; }

.menu-toggle {
	display: inline-flex;
	flex-direction: column;
	gap: 4px;
	background: none;
	border: none;
	cursor: pointer;
	padding: 0.5rem;
	min-width: 44px;
	min-height: 44px;
	align-items: center;
	justify-content: center;
}
.menu-toggle__bar {
	width: 22px;
	height: 2px;
	background: var(--cd-text);
	display: block;
}

.main-navigation { width: 100%; display: none; }
.main-navigation.is-open { display: block; }

#primary-menu, #footer-menu {
	list-style: none;
	margin: 0;
	padding: 0;
}
#primary-menu li { border-top: 1px solid var(--cd-border); }
#primary-menu li a {
	display: block;
	padding: 0.85rem 0.25rem;
	color: var(--cd-text);
	min-height: 44px;
}

@media (min-width: 782px) {
	.menu-toggle { display: none; }
	.main-navigation { display: block; width: auto; }
	#primary-menu { display: flex; gap: 1.5rem; }
	#primary-menu li { border-top: none; }
	#primary-menu li a { padding: 0.5rem 0; min-height: auto; }
}

/* ---------- 3. Hero / homepage ---------- */
.hero {
	background: linear-gradient(135deg, #eaf2ff 0%, #f5f7fa 100%);
	padding: 2.5rem 0;
	text-align: center;
}
.hero__title { margin-bottom: 0.4em; }
.hero__subtitle { color: var(--cd-text-light); font-size: 1.05rem; }

.hero__search {
	display: flex;
	max-width: 480px;
	margin: 1.5rem auto 0;
	gap: 0.5rem;
	position: relative;
}
.hero__search-input {
	flex: 1;
	padding: 0.85rem 1rem;
	font-size: 1rem;
	border: 1px solid var(--cd-border);
	border-radius: var(--cd-radius);
	min-height: 48px;
}
.hero__search-btn {
	padding: 0 1.2rem;
	background: var(--cd-primary);
	color: #fff;
	border: none;
	border-radius: var(--cd-radius);
	cursor: pointer;
	font-weight: 600;
	min-height: 48px;
}
.hero__search-btn:hover { background: var(--cd-primary-dark); }

.hero__search-results {
	list-style: none;
	margin: 0.5rem auto 0;
	padding: 0;
	max-width: 480px;
	background: #fff;
	border: 1px solid var(--cd-border);
	border-radius: var(--cd-radius);
	text-align: left;
	overflow: hidden;
}
.hero__search-results li a {
	display: block;
	padding: 0.75rem 1rem;
	color: var(--cd-text);
}
.hero__search-results li + li { border-top: 1px solid var(--cd-border); }
.hero__search-results li a:hover { background: var(--cd-bg-alt); text-decoration: none; }

/* ---------- 4. Sections ---------- */
.section-title { text-align: center; margin-bottom: 1.5rem; }
.popular-calculators, .calculator-categories { padding: 2.5rem 0; }
.popular-calculators { background: var(--cd-bg); }
.calculator-categories { background: var(--cd-bg-alt); }

/* ---------- 5. Calculator cards ---------- */
.calculator-card-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1rem;
}
@media (min-width: 600px) {
	.calculator-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
	.calculator-card-grid { grid-template-columns: repeat(4, 1fr); }
}

.calculator-card {
	border: 1px solid var(--cd-border);
	border-radius: var(--cd-radius);
	padding: 1.25rem;
	background: #fff;
	display: flex;
	flex-direction: column;
	transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.calculator-card:hover {
	box-shadow: 0 6px 18px rgba(0,0,0,0.08);
	transform: translateY(-2px);
}
.calculator-card__icon {
	color: var(--cd-primary);
	margin-bottom: 0.75rem;
}
.calculator-card__title { margin-bottom: 0.4em; font-size: 1.1rem; }
.calculator-card__title a { color: var(--cd-text); }
.calculator-card__title a:hover { color: var(--cd-primary); text-decoration: none; }
.calculator-card__desc {
	color: var(--cd-text-light);
	font-size: 0.92rem;
	flex-grow: 1;
}
.calculator-card__btn {
	display: inline-block;
	margin-top: 0.75rem;
	padding: 0.6rem 1rem;
	background: var(--cd-primary);
	color: #fff !important;
	text-align: center;
	border-radius: 8px;
	font-weight: 600;
	font-size: 0.92rem;
	min-height: 44px;
	line-height: 1.3;
}
.calculator-card__btn:hover { background: var(--cd-primary-dark); text-decoration: none; }

/* ---------- 6. Category list ---------- */
.category-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: 1fr;
	gap: 0.75rem;
}
@media (min-width: 600px) {
	.category-list { grid-template-columns: repeat(3, 1fr); }
}
.category-list__item a {
	display: block;
	padding: 1rem;
	background: #fff;
	border: 1px solid var(--cd-border);
	border-radius: var(--cd-radius);
	color: var(--cd-text);
	font-weight: 600;
	text-align: center;
	min-height: 44px;
}
.category-list__item a:hover { border-color: var(--cd-primary); text-decoration: none; }

/* ---------- 7. Breadcrumb ---------- */
.breadcrumb { padding: 1rem; font-size: 0.88rem; }
.breadcrumb__list {
	list-style: none;
	margin: 0; padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem;
	color: var(--cd-text-light);
}
.breadcrumb__item:not(:last-child)::after {
	content: "›";
	margin-left: 0.35rem;
	color: var(--cd-text-light);
}

/* ---------- 8. Calculator page / widget ---------- */
.calculator-page .container { max-width: 820px; padding: 1rem; }
.entry-title { margin-top: 1rem; }
.entry-content { font-size: 1rem; }
.entry-content h2 { margin-top: 2rem; }

.calculator-widget {
	background: var(--cd-bg-alt);
	border: 1px solid var(--cd-border);
	border-radius: var(--cd-radius);
	padding: 1.25rem;
	margin: 1.5rem 0;
}

.calculator-widget__fields {
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.calc-field { display: flex; flex-direction: column; gap: 0.35rem; }
.calc-field label { font-weight: 600; font-size: 0.95rem; }
.calc-field input,
.calc-field select {
	width: 100%;
	padding: 0.85rem 0.9rem;
	font-size: 1.05rem;
	border: 1px solid var(--cd-border);
	border-radius: 8px;
	min-height: 48px;
	background: #fff;
}
.calc-field-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1rem;
}
@media (min-width: 500px) {
	.calc-field-row.two-col { grid-template-columns: 1fr 1fr; }
}

.calculator-widget__actions {
	display: flex;
	gap: 0.75rem;
	margin-top: 1.25rem;
	flex-wrap: wrap;
}
.calculator-widget__btn {
	flex: 1;
	min-width: 130px;
	min-height: 48px;
	border-radius: 8px;
	font-size: 1rem;
	font-weight: 700;
	cursor: pointer;
	border: none;
}
.calculator-widget__btn--calculate { background: var(--cd-primary); color: #fff; }
.calculator-widget__btn--calculate:hover { background: var(--cd-primary-dark); }
.calculator-widget__btn--reset {
	background: #fff;
	color: var(--cd-text);
	border: 1px solid var(--cd-border);
}
.calculator-widget__btn--reset:hover { background: var(--cd-bg-alt); }

.calculator-widget__error {
	margin-top: 1rem;
	padding: 0.75rem 1rem;
	background: #fef2f2;
	border: 1px solid var(--cd-error);
	color: var(--cd-error);
	border-radius: 8px;
	font-size: 0.92rem;
}

.calculator-widget__result {
	margin-top: 1.5rem;
	padding: 1.25rem;
	background: #fff;
	border: 2px solid var(--cd-accent);
	border-radius: var(--cd-radius);
}
.calculator-widget__result-title { color: var(--cd-accent); margin-bottom: 0.5rem; font-size: 1.15rem; }
.calculator-widget__result-body { font-size: 1.15rem; font-weight: 600; }
.calculator-widget__result-body .result-line { margin-bottom: 0.35rem; }
.calculator-widget__result-actions { margin-top: 1rem; display: flex; gap: 0.6rem; flex-wrap: wrap; }
.calculator-widget__copy-btn, .calculator-widget__print-btn {
	padding: 0.5rem 1rem;
	border: 1px solid var(--cd-border);
	background: #fff;
	border-radius: 8px;
	cursor: pointer;
	min-height: 40px;
	font-size: 0.9rem;
}
.calculator-widget__noscript { color: var(--cd-error); }

/* ---------- 9. FAQ accordion ---------- */
.calculator-faq { margin: 2rem 0; }
.calculator-faq__item {
	border-bottom: 1px solid var(--cd-border);
}
.calculator-faq__question {
	width: 100%;
	text-align: left;
	background: none;
	border: none;
	padding: 1rem 0;
	font-size: 1rem;
	font-weight: 600;
	cursor: pointer;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 1rem;
	min-height: 48px;
	color: var(--cd-text);
}
.calculator-faq__icon { flex-shrink: 0; font-size: 1.3rem; color: var(--cd-primary); }
.calculator-faq__question[aria-expanded="true"] .calculator-faq__icon { transform: rotate(45deg); }
.calculator-faq__answer { padding: 0 0 1rem; color: var(--cd-text-light); }

/* ---------- 10. Related calculators ---------- */
.related-calculators { margin: 2.5rem 0; }

/* ---------- 11. Footer ---------- */
.site-footer {
	background: #101828;
	color: #d0d5dd;
	padding: 2.5rem 0 1.5rem;
	margin-top: 2rem;
}
.footer-widgets {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1.5rem;
	margin-bottom: 1.5rem;
}
@media (min-width: 700px) {
	.footer-widgets { grid-template-columns: repeat(3, 1fr); }
}
.footer-widget-title { color: #fff; font-size: 1rem; }
.footer-navigation { margin-bottom: 1rem; }
.footer-navigation ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-navigation a { color: #d0d5dd; }
.footer-navigation a:hover { color: #fff; }
.site-footer__copy { font-size: 0.85rem; margin-bottom: 0.4em; }
.site-footer__disclaimer { font-size: 0.78rem; color: #98a2b3; }

/* ---------- 12. 404 ---------- */
.error-404 { padding: 2rem 0; text-align: center; }
.error-404__search { display: flex; max-width: 400px; margin: 1.5rem auto; gap: 0.5rem; }
.error-404__search input { flex: 1; padding: 0.75rem; border: 1px solid var(--cd-border); border-radius: 8px; min-height: 44px; }
.error-404__search button { padding: 0 1rem; background: var(--cd-primary); color: #fff; border: none; border-radius: 8px; min-height: 44px; }

/* ---------- 13. Utility ---------- */
.page-title { text-align: center; margin: 1.5rem 0; }
.archive-description { text-align: center; color: var(--cd-text-light); max-width: 700px; margin: 0 auto 1.5rem; }