/* ==========================================================================
   Dhaka Postal Code Finder — theme stylesheet (v2)
   Soft Bangladesh-flag palette (green field + red disc), light & dark modes.
   ========================================================================== */

:root {
	--dhp-bg: #fbfdfc;
	--dhp-surface: #ffffff;
	--dhp-surface-2: #f2f8f5;
	--dhp-ink: #13221b;
	--dhp-muted: #55655c;
	--dhp-faint: #7d8c84;
	--dhp-line: #e0e9e4;

	--dhp-green: #006a4e;          /* flag green */
	--dhp-green-strong: #005a42;
	--dhp-green-text: #006a4e;
	--dhp-green-soft: #e4f3ec;
	--dhp-red: #f42a41;            /* flag red */
	--dhp-red-text: #c4162b;
	--dhp-red-soft: #fdebee;

	--dhp-header-bg: rgba(255, 255, 255, .88);
	--dhp-footer-bg: #0f1c16;
	--dhp-footer-ink: #cfe0d6;

	--dhp-radius: 16px;
	--dhp-shadow: 0 1px 2px rgba(15, 40, 26, .05), 0 4px 14px rgba(15, 40, 26, .06);
	--dhp-shadow-hover: 0 10px 28px rgba(15, 40, 26, .14);
	--dhp-max: 1120px;
	color-scheme: light;
	font-size: 16px;
}

:root[data-theme="dark"] {
	--dhp-bg: #0d1511;
	--dhp-surface: #15201b;
	--dhp-surface-2: #1a2822;
	--dhp-ink: #e8f1ec;
	--dhp-muted: #a7b8ae;
	--dhp-faint: #83958b;
	--dhp-line: #263730;

	--dhp-green: #0e8a63;
	--dhp-green-strong: #0b7a58;
	--dhp-green-text: #5fd4a8;
	--dhp-green-soft: rgba(63, 191, 143, .13);
	--dhp-red: #ff5468;
	--dhp-red-text: #ff8494;
	--dhp-red-soft: rgba(244, 42, 65, .14);

	--dhp-header-bg: rgba(13, 21, 17, .88);
	--dhp-footer-bg: #09100d;
	--dhp-footer-ink: #b9cdc1;

	--dhp-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 14px rgba(0, 0, 0, .25);
	--dhp-shadow-hover: 0 10px 28px rgba(0, 0, 0, .5);
	color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
	margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans Bengali", sans-serif;
	color: var(--dhp-ink);
	background: var(--dhp-bg);
	line-height: 1.6;
	transition: background-color .25s, color .25s;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--dhp-green-text); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--dhp-red); outline-offset: 2px; border-radius: 6px; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; font-weight: 800; color: var(--dhp-ink); }
h1 { font-size: clamp(1.9rem, 4.2vw, 2.7rem); letter-spacing: -.015em; }
h2 { font-size: clamp(1.35rem, 2.5vw, 1.75rem); }
p { margin: 0 0 1em; color: var(--dhp-muted); }
[hidden] { display: none !important; }

.screen-reader-text {
	position: absolute !important;
	width: 1px; height: 1px; overflow: hidden;
	clip: rect(1px, 1px, 1px, 1px);
}
.dhp-skip-link:focus {
	position: fixed; top: 8px; left: 8px; width: auto; height: auto;
	background: var(--dhp-green); color: #fff; padding: 10px 16px; z-index: 9999; border-radius: 8px;
}

.dhp-container { max-width: var(--dhp-max); margin: 0 auto; padding: 0 20px; }
.dhp-icon { flex-shrink: 0; }

/* ---------------- Header ---------------- */
.dhp-site-header {
	border-bottom: 1px solid var(--dhp-line);
	position: sticky; top: 0;
	background: var(--dhp-header-bg);
	-webkit-backdrop-filter: saturate(180%) blur(8px);
	backdrop-filter: saturate(180%) blur(8px);
	z-index: 100;
}
/* Flag corner in the top-left of the page */
.dhp-flag-corner { position: absolute; top: 0; left: 0; width: 56px; height: 56px; pointer-events: none; line-height: 0; }
.dhp-flag-corner svg { width: 100%; height: 100%; display: block; }

.dhp-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 20px 12px 68px; }
.dhp-logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 1.25rem; color: var(--dhp-ink); }
.dhp-logo:hover { text-decoration: none; color: var(--dhp-ink); }
.dhp-logo-mark {
	display: inline-flex; align-items: center; justify-content: center;
	width: 34px; height: 34px; border-radius: 10px;
	background: var(--dhp-green-soft); color: var(--dhp-green-text);
}
.dhp-logo-accent { color: var(--dhp-green-text); }
.dhp-header-actions { display: flex; align-items: center; gap: 14px; }
.dhp-menu { list-style: none; display: flex; gap: 22px; margin: 0; padding: 0; }
.dhp-menu a { color: var(--dhp-ink); font-weight: 600; font-size: .95rem; padding: 6px 0; border-bottom: 2px solid transparent; }
.dhp-menu a:hover { color: var(--dhp-green-text); text-decoration: none; border-bottom-color: var(--dhp-red); }

.dhp-theme-toggle {
	display: inline-flex; align-items: center; justify-content: center;
	width: 40px; height: 40px; border-radius: 999px; cursor: pointer;
	border: 1px solid var(--dhp-line); background: var(--dhp-surface); color: var(--dhp-ink);
	transition: background-color .2s, border-color .2s, transform .15s;
}
.dhp-theme-toggle:hover { border-color: var(--dhp-green); background: var(--dhp-green-soft); }
.dhp-theme-toggle:active { transform: scale(.94); }
.dhp-theme-toggle .dhp-ico-sun { display: none; }
:root[data-theme="dark"] .dhp-theme-toggle .dhp-ico-sun { display: inline-flex; }
:root[data-theme="dark"] .dhp-theme-toggle .dhp-ico-moon { display: none; }
.dhp-theme-toggle span { display: inline-flex; }

/* ---------------- Hero / Search ---------------- */
.dhp-hero {
	position: relative;
	background: linear-gradient(180deg, var(--dhp-green-soft) 0%, var(--dhp-bg) 100%);
	padding: 64px 0 52px;
	text-align: center;
}
.dhp-hero-small { padding: 40px 0 34px; }
.dhp-hero > .dhp-container { position: relative; z-index: 20; }

/* Decorative flag motif: a soft red disc + green ring (clipped in its own layer so the search dropdown is never cut off) */
.dhp-hero-deco, .dhp-single-hero .dhp-hero-deco { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.dhp-hero-deco::before {
	content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%;
	right: -80px; top: -120px; background: var(--dhp-red-soft);
}
.dhp-hero-deco::after {
	content: ""; position: absolute; width: 240px; height: 240px; border-radius: 50%;
	left: -90px; bottom: -110px; border: 26px solid var(--dhp-green-soft); opacity: .9;
}

.dhp-eyebrow {
	text-transform: uppercase; letter-spacing: .09em; font-size: .76rem;
	font-weight: 800; color: var(--dhp-red-text); margin-bottom: 8px;
}
.dhp-hero h1 { max-width: 780px; margin-left: auto; margin-right: auto; }
.dhp-hero-sub { max-width: 640px; margin: 0 auto 28px; font-size: 1.05rem; }

.dhp-search-wrap { position: relative; max-width: 640px; margin: 0 auto; text-align: left; z-index: 20; }
.dhp-search-icon {
	position: absolute; left: 18px; top: 50%; transform: translateY(-50%);
	display: inline-flex; color: var(--dhp-faint); pointer-events: none;
}
#dhp-search-input {
	width: 100%;
	font: inherit; font-size: 1.05rem; color: var(--dhp-ink);
	padding: 17px 20px 17px 50px;
	border: 2px solid var(--dhp-line);
	border-radius: 999px;
	background: var(--dhp-surface);
	box-shadow: var(--dhp-shadow);
	outline: none;
	transition: border-color .15s, box-shadow .15s;
	-webkit-appearance: none; appearance: none;
}
#dhp-search-input::placeholder { color: var(--dhp-faint); }
#dhp-search-input:focus { border-color: var(--dhp-green); box-shadow: 0 0 0 4px var(--dhp-green-soft), var(--dhp-shadow); }

.dhp-search-results {
	position: absolute; top: calc(100% + 8px); left: 0; right: 0;
	background: var(--dhp-surface);
	border: 1px solid var(--dhp-line);
	border-radius: var(--dhp-radius);
	box-shadow: var(--dhp-shadow-hover);
	max-height: 380px; overflow-y: auto;
	z-index: 50;
}
.dhp-result-item {
	display: flex; align-items: center; justify-content: space-between; gap: 10px;
	padding: 8px 12px 8px 18px;
	border-bottom: 1px solid var(--dhp-line);
}
.dhp-result-item:last-child { border-bottom: none; }
.dhp-result-item:hover, .dhp-result-item.dhp-active { background: var(--dhp-green-soft); }
.dhp-result-link { flex: 1; min-width: 0; display: flex; flex-direction: column; padding: 6px 0; color: var(--dhp-ink); }
.dhp-result-link:hover { text-decoration: none; }
.dhp-result-name { font-weight: 700; }
.dhp-result-meta { font-size: .82rem; color: var(--dhp-faint); }
.dhp-search-empty { padding: 16px 18px; color: var(--dhp-faint); font-size: .92rem; }

.dhp-hero-hint { margin-top: 18px; font-size: .9rem; color: var(--dhp-muted); }
.dhp-hero-hint a { margin: 0 6px; font-weight: 700; }

/* ---------------- Copyable code pill ---------------- */
.dhp-code-pill {
	display: inline-flex; align-items: center; justify-content: center; gap: 7px;
	flex-shrink: 0;
	font: inherit; font-weight: 800; font-size: .95rem; font-variant-numeric: tabular-nums; letter-spacing: .02em;
	padding: 8px 12px; min-width: 76px;
	background: var(--dhp-green-soft); color: var(--dhp-green-text);
	border: 1px solid transparent; border-radius: 10px;
	cursor: pointer; position: relative; z-index: 2;
	transition: background-color .15s, color .15s, transform .12s;
}
.dhp-code-pill .dhp-icon { opacity: .75; }
.dhp-code-pill:hover { background: var(--dhp-green); color: #fff; }
.dhp-code-pill:hover .dhp-icon { opacity: 1; }
.dhp-code-pill:active { transform: scale(.96); }
.dhp-code-pill.is-copied, .dhp-code-badge.is-copied { background: var(--dhp-green-strong); color: #fff; }

/* ---------------- Sections ---------------- */
.dhp-section { padding: 48px 0; }
.dhp-section-alt { background: var(--dhp-surface-2); }
.dhp-two-col { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 780px) { .dhp-two-col { grid-template-columns: 1fr; gap: 32px; } }
.dhp-see-all { margin-top: 20px; font-weight: 700; }

/* ---------------- Cards ---------------- */
.dhp-card-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
	gap: 14px;
	margin-top: 18px;
}
.dhp-area-card {
	position: relative;
	display: flex; align-items: center; gap: 12px;
	background: var(--dhp-surface);
	border: 1px solid var(--dhp-line);
	border-left: 4px solid var(--dhp-green);
	border-radius: var(--dhp-radius);
	padding: 14px 14px 14px 12px;
	box-shadow: var(--dhp-shadow);
	transition: transform .12s, box-shadow .12s, border-color .12s;
}
.dhp-area-card:hover { transform: translateY(-2px); box-shadow: var(--dhp-shadow-hover); border-left-color: var(--dhp-red); }
.dhp-card-body { min-width: 0; display: flex; flex-direction: column; }
.dhp-area-name { font-weight: 700; color: var(--dhp-ink); overflow-wrap: anywhere; }
.dhp-area-name:hover { color: var(--dhp-green-text); text-decoration: none; }
.dhp-card-link::after { content: ""; position: absolute; inset: 0; border-radius: var(--dhp-radius); z-index: 1; }
.dhp-area-meta { font-size: .8rem; color: var(--dhp-faint); }

/* ---------------- Chips ---------------- */
.dhp-chip-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.dhp-chip {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 7px 14px; border-radius: 999px;
	background: var(--dhp-surface); border: 1px solid var(--dhp-line);
	color: var(--dhp-ink); font-weight: 600; font-size: .9rem;
	transition: border-color .15s, background-color .15s;
}
.dhp-chip span { font-size: .75rem; color: var(--dhp-green-text); background: var(--dhp-green-soft); border-radius: 999px; padding: 1px 8px; font-weight: 800; }
.dhp-chip:hover { border-color: var(--dhp-green); background: var(--dhp-green-soft); text-decoration: none; }

/* ---------------- Checklist ---------------- */
.dhp-check-list { list-style: none; padding: 0; margin: 0; }
.dhp-check-list li { padding: 10px 0 10px 30px; position: relative; color: var(--dhp-muted); border-bottom: 1px solid var(--dhp-line); }
.dhp-check-list li::before { content: "✓"; position: absolute; left: 0; top: 9px; color: var(--dhp-green-text); font-weight: 900; }

/* ---------------- FAQ ---------------- */
.dhp-faq { max-width: 780px; margin-top: 20px; }
.dhp-faq-item { border: 1px solid var(--dhp-line); border-radius: 12px; margin-bottom: 10px; padding: 4px 20px; background: var(--dhp-surface); }
.dhp-faq-item summary { cursor: pointer; font-weight: 700; padding: 16px 0; list-style: none; position: relative; padding-right: 30px; }
.dhp-faq-item summary::-webkit-details-marker { display: none; }
.dhp-faq-item summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 1.4rem; color: var(--dhp-red-text); font-weight: 400; }
.dhp-faq-item[open] summary::after { content: "−"; }
.dhp-faq-answer { padding-bottom: 16px; }
.dhp-faq-answer p { margin: 0; }

/* ---------------- Single postal code page ---------------- */
.dhp-breadcrumbs { padding: 16px 20px 0; font-size: .88rem; color: var(--dhp-faint); }
.dhp-breadcrumbs a { color: var(--dhp-muted); }

.dhp-single-hero { position: relative; padding: 30px 0 28px; text-align: center; background: linear-gradient(180deg, var(--dhp-green-soft) 0%, var(--dhp-bg) 100%); margin-top: 8px; }
.dhp-single-hero > .dhp-container { position: relative; z-index: 2; }
.dhp-code-badge {
	display: inline-flex; align-items: center; justify-content: center; gap: 14px;
	background: var(--dhp-green); color: #fff;
	font: inherit; font-weight: 900; font-size: 2.6rem; font-variant-numeric: tabular-nums; letter-spacing: .05em;
	padding: 10px 30px; border: 0; border-radius: 18px; margin: 14px 0 6px;
	cursor: pointer; box-shadow: 0 8px 22px rgba(0, 106, 78, .28);
	transition: transform .12s, background-color .15s, box-shadow .15s;
}
.dhp-code-badge .dhp-icon { width: 24px; height: 24px; opacity: .85; }
.dhp-code-badge:hover { background: var(--dhp-green-strong); transform: translateY(-1px); }
.dhp-code-badge:active { transform: scale(.98); }
.dhp-copy-hint { font-size: .82rem; color: var(--dhp-faint); margin: 0 0 12px; }
.dhp-copy-actions { margin-bottom: 14px; }
.dhp-single-lead { max-width: 640px; margin: 0 auto; font-size: 1.05rem; }
.dhp-single-lead strong, .dhp-selectable { user-select: all; -webkit-user-select: all; color: var(--dhp-ink); }

.dhp-detail-table { width: 100%; border-collapse: collapse; margin: 16px 0 28px; background: var(--dhp-surface); border: 1px solid var(--dhp-line); border-radius: 12px; overflow: hidden; }
.dhp-detail-table th, .dhp-detail-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--dhp-line); font-size: .95rem; }
.dhp-detail-table tr:last-child th, .dhp-detail-table tr:last-child td { border-bottom: 0; }
.dhp-detail-table th { width: 38%; color: var(--dhp-faint); font-weight: 600; background: var(--dhp-surface-2); }
.dhp-detail-table td { font-weight: 600; }

.dhp-related-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.dhp-related-list .dhp-area-card { padding: 10px 12px; box-shadow: none; }

/* ---------------- Directory ---------------- */
.dhp-filter-bar { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.dhp-filter-bar label { font-weight: 700; font-size: .9rem; }
.dhp-filter-bar select {
	font: inherit; padding: 10px 14px; border-radius: 10px; min-width: 220px; max-width: 100%;
	background: var(--dhp-surface); color: var(--dhp-ink); border: 1px solid var(--dhp-line);
}
.dhp-filter-count { font-size: .9rem; color: var(--dhp-muted); }

.dhp-alpha-jump {
	display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 26px;
	position: sticky; top: 64px; background: var(--dhp-bg); padding: 10px 0; z-index: 10;
}
.dhp-alpha-jump a {
	display: inline-flex; align-items: center; justify-content: center;
	width: 34px; height: 34px; border-radius: 8px;
	background: var(--dhp-surface-2); color: var(--dhp-ink); font-weight: 700; font-size: .85rem;
}
.dhp-alpha-jump a:hover { background: var(--dhp-green); color: #fff; text-decoration: none; }
.dhp-alpha-heading { margin-top: 34px; padding-top: 10px; border-top: 2px solid var(--dhp-line); color: var(--dhp-green-text); scroll-margin-top: 120px; }
.dhp-alpha-group { scroll-margin-top: 120px; }

/* ---------------- Buttons ---------------- */
.dhp-btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 8px;
	background: var(--dhp-green); color: #fff !important;
	font: inherit; font-weight: 700; padding: 12px 24px; border-radius: 999px; margin-top: 10px;
	border: 2px solid var(--dhp-green); cursor: pointer;
	transition: background-color .15s, color .15s;
}
.dhp-btn:hover { background: var(--dhp-green-strong); border-color: var(--dhp-green-strong); text-decoration: none; }
.dhp-btn-ghost { background: transparent; color: var(--dhp-green-text) !important; margin-top: 0; padding: 9px 20px; }
.dhp-btn-ghost:hover { background: var(--dhp-green) ; color: #fff !important; }
.dhp-btn-ghost.is-copied { background: var(--dhp-green-strong); color: #fff !important; border-color: var(--dhp-green-strong); }

/* ---------------- Footer ---------------- */
.dhp-site-footer {
	background: var(--dhp-footer-bg); color: var(--dhp-footer-ink);
	padding: 44px 0 20px; margin-top: 30px; position: relative;
	border-top: 4px solid var(--dhp-green);
}
.dhp-site-footer::before { /* small red disc echoing the flag */
	content: ""; position: absolute; top: -4px; right: 8%; width: 46px; height: 4px; background: var(--dhp-red); border-radius: 0 0 4px 4px;
}
.dhp-footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; }
@media (max-width: 700px) { .dhp-footer-grid { grid-template-columns: 1fr; } }
.dhp-site-footer h3, .dhp-widget-title { color: #fff; font-size: 1rem; }
.dhp-site-footer p { color: #a9beb1; }
.dhp-site-footer ul { list-style: none; padding: 0; margin: 0; }
.dhp-site-footer ul li { margin-bottom: 8px; }
.dhp-site-footer a { color: var(--dhp-footer-ink); }
.dhp-site-footer a:hover { color: #fff; }
.dhp-footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 30px; padding-top: 18px; font-size: .82rem; }
.dhp-footer-bottom p { color: #7f9488; margin: 0; }

/* ---------------- Toast ---------------- */
.dhp-toast {
	position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px);
	background: var(--dhp-ink); color: var(--dhp-bg);
	font-weight: 700; font-size: .9rem; padding: 10px 18px; border-radius: 999px;
	box-shadow: var(--dhp-shadow-hover); opacity: 0; pointer-events: none; z-index: 9999;
	transition: opacity .2s, transform .2s; max-width: calc(100vw - 32px);
}
.dhp-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.dhp-entry-content { margin-top: 10px; }

/* ---------------- Responsive ---------------- */
@media (max-width: 720px) {
	.dhp-flag-corner { width: 42px; height: 42px; }
	.dhp-header-inner { padding: 10px 16px 10px 52px; flex-wrap: wrap; gap: 8px; }
	.dhp-header-actions { gap: 10px; }
	.dhp-menu { gap: 14px; }
	.dhp-hero { padding: 46px 0 36px; }
	.dhp-code-badge { font-size: 2rem; padding: 8px 22px; }
	.dhp-alpha-jump { top: 96px; }
}

@media (prefers-reduced-motion: reduce) {
	* { transition: none !important; scroll-behavior: auto !important; }
}