/* ==========================================================================
   Raihan Aluminium & Glass Works
   Apple-Glass / Glassmorphism Design System
   Palette: Black, White, Steel Grey, Glass Blue
   ========================================================================== */

:root {
    --c-bg: #f4f7fb;
    --c-bg-2: #e6edf5;
    --c-ink: #0b1220;
    --c-ink-2: #1f2937;
    --c-mute: #5b6b7d;
    --c-line: rgba(15, 23, 42, 0.08);
    --c-steel: #7b8694;
    --c-steel-dark: #2c3a4b;
    --c-blue: #6fb3df;
    --c-blue-2: #2f7fb8;
    --c-blue-3: #0e3a5f;
    --c-accent: #d6eaf7;
    --c-white: #ffffff;
    --c-glass: rgba(255, 255, 255, 0.55);
    --c-glass-dark: rgba(11, 18, 32, 0.55);
    --c-glass-border: rgba(255, 255, 255, 0.55);
    --shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.16);
    --radius: 18px;
    --radius-lg: 26px;
    --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 90px; }
body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px; line-height: 1.65; color: var(--c-ink-2);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: var(--c-blue-2); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-blue-3); }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { color: var(--c-ink); margin: 0 0 .5em; line-height: 1.2; font-weight: 700; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 800; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); font-weight: 800; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; font-weight: 700; }
h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--c-mute); font-weight: 700; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--c-blue); outline-offset: 3px; border-radius: 6px; }

body::before, body::after {
    content: ""; position: fixed; pointer-events: none; z-index: -1;
    width: 60vw; height: 60vw; border-radius: 50%;
    filter: blur(120px); opacity: .5;
    transition: transform .8s ease-out;
}
body::before { top: -20vw; left: -20vw; background: radial-gradient(circle at center, #c5e0f4 0%, transparent 70%); }
body::after  { bottom: -20vw; right: -20vw; background: radial-gradient(circle at center, #e2eaf3 0%, transparent 70%); }
body.tilt-up::before { transform: translate(-10px, -30px); }
body.tilt-up::after  { transform: translate(10px, 20px); }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: -40px; left: 0; background: var(--c-ink); color: #fff; padding: 10px 16px; z-index: 9999; transition: top .2s; border-radius: 0 0 8px 0; }
.skip-link:focus { top: 0; color: #fff; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.grid { display: grid; gap: 28px; }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }
@media (min-width: 720px) {
    .grid--2 { grid-template-columns: 1fr 1fr; }
    .grid--3 { grid-template-columns: 1fr 1fr; }
    .grid--4 { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 980px) {
    .grid--3 { grid-template-columns: repeat(3, 1fr); }
    .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.eyebrow { display: inline-block; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-blue-2); font-weight: 700; margin-bottom: 14px; }
.section-title { font-size: clamp(1.6rem, 3.4vw, 2.4rem); margin-bottom: 16px; }
.section-sub { color: var(--c-mute); max-width: 680px; font-size: 1.02rem; }
.section-header { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.section-header .section-sub { margin-left: auto; margin-right: auto; }
.lede { font-size: 1.15rem; color: var(--c-ink-2); max-width: 640px; line-height: 1.6; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: .98rem; line-height: 1; text-decoration: none !important; cursor: pointer; border: 1.5px solid transparent; transition: transform .2s ease, background .25s ease, border-color .25s ease, color .25s ease, box-shadow .25s ease; white-space: nowrap; font-family: inherit; position: relative; overflow: hidden; }
.btn--sm { padding: 10px 18px; font-size: .9rem; }
.btn--primary { background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); color: #fff !important; box-shadow: 0 8px 22px rgba(46, 127, 184, 0.28); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(46, 127, 184, 0.4); }
.btn--ghost { background: rgba(255, 255, 255, 0.5); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); color: var(--c-ink) !important; border-color: rgba(15, 23, 42, 0.12); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.85); border-color: var(--c-ink); }
.btn--whatsapp { background: #25d366; color: #fff !important; box-shadow: 0 8px 22px rgba(37, 211, 102, 0.32); }
.btn--whatsapp:hover { background: #1ebd5b; transform: translateY(-2px); }
.btn::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.35) 50%, transparent 100%); transform: translateX(-100%); transition: transform .8s ease; pointer-events: none; }
.btn:hover::after { transform: translateX(100%); }

/* Topbar */
.topbar { background: rgba(11, 18, 32, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); color: #cbd6e2; font-size: .85rem; border-bottom: 1px solid rgba(255,255,255,0.06); }
.topbar__inner { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; align-items: center; padding: 9px 22px; }
.topbar a { color: #cbd6e2; }
.topbar a:hover { color: #fff; }
.topbar__sep { margin: 0 8px; opacity: .4; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.7); backdrop-filter: saturate(180%) blur(22px); -webkit-backdrop-filter: saturate(180%) blur(22px); border-bottom: 1px solid rgba(15, 23, 42, 0.06); transition: box-shadow .25s ease; }
.site-header.is-scrolled { box-shadow: 0 4px 22px rgba(15, 23, 42, 0.06); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand:hover { text-decoration: none; }
.brand__mark {
    width: 46px; height: 46px; border-radius: 12px;
    background: #ffffff url('../images/logo.svg') center/82% no-repeat;
    color: transparent; font-size: 0;
    display: grid; place-items: center;
    box-shadow: 0 6px 14px rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(15, 23, 42, 0.06);
    overflow: hidden;
    transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .3s ease;
}
.brand:hover .brand__mark { transform: rotate(-3deg) scale(1.05); box-shadow: 0 10px 22px rgba(15, 23, 42, 0.18); }
.brand--footer .brand__mark { background-color: #ffffff; }
.brand__text { font-size: 1.06rem; color: var(--c-ink); line-height: 1.15; font-weight: 600; }
.brand__text strong { font-weight: 800; color: var(--c-blue-3); }

.primary-nav ul { display: flex; align-items: center; gap: 4px; }
.primary-nav a { display: inline-block; padding: 9px 14px; border-radius: 999px; color: var(--c-ink-2); font-weight: 500; font-size: .95rem; transition: background .2s, color .2s; }
.primary-nav a:hover { background: rgba(15, 23, 42, 0.06); text-decoration: none; }
.primary-nav a.is-active { color: var(--c-blue-3); font-weight: 700; }
.primary-nav a.btn { color: #fff !important; padding: 10px 18px; }
.nav-toggle { display: none; background: transparent; border: 0; padding: 8px; cursor: pointer; width: 44px; height: 44px; }
.nav-toggle span { display: block; width: 26px; height: 3px; background: var(--c-ink); border-radius: 2px; margin: 5px auto; transition: transform .25s, opacity .25s; }

.has-dropdown { position: relative; }
.dropdown { position: absolute; top: 100%; left: 0; min-width: 260px; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); border: 1px solid rgba(15, 23, 42, 0.06); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 10px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity .2s, transform .2s, visibility .2s; }
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 9px 14px; border-radius: 10px; font-size: .94rem; }
.dropdown a:hover { background: rgba(46, 127, 184, 0.08); }

@media (max-width: 980px) {
    .nav-toggle { display: block; }
    .primary-nav { position: absolute; top: 100%; left: 0; right: 0; background: rgba(255, 255, 255, 0.97); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); border-bottom: 1px solid rgba(15, 23, 42, 0.06); max-height: 0; overflow: hidden; transition: max-height .35s cubic-bezier(.2,.8,.2,1); }
    .primary-nav.is-open { max-height: 80vh; overflow-y: auto; }
    .primary-nav ul { flex-direction: column; align-items: stretch; padding: 14px 22px 22px; gap: 4px; }
    .primary-nav a { padding: 12px 14px; }
    .primary-nav a.btn { text-align: center; margin-top: 8px; }
    .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: transparent; border: 0; padding: 0 0 0 14px; }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}

/* Hero */
.hero { position: relative; padding: 90px 0 100px; overflow: hidden; }
.hero__inner { display: grid; grid-template-columns: 1fr; gap: 50px; align-items: center; }
@media (min-width: 980px) { .hero__inner { grid-template-columns: 1.15fr 1fr; } }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 38px; font-size: .92rem; color: var(--c-ink-2); }
.hero__badges li { position: relative; padding-left: 22px; font-weight: 500; }
.hero__badges li::before { content: ""; position: absolute; left: 0; top: 7px; width: 12px; height: 12px; border-radius: 50%; background: var(--c-blue-2); box-shadow: 0 0 0 4px rgba(46, 127, 184, 0.2); }

.hero__visual { position: relative; min-height: 420px; display: grid; grid-template-columns: 2fr 1.2fr; grid-template-rows: 1fr 1fr; gap: 16px; perspective: 1200px; }
.hero__panel {
    border-radius: var(--radius-lg);
    background-color: rgba(255,255,255,0.4);
    background-size: cover; background-position: center; background-repeat: no-repeat;
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--shadow-lg);
    position: relative; overflow: hidden;
    transition: transform .7s cubic-bezier(.2,.8,.2,1), box-shadow .4s ease;
    will-change: transform;
}
.hero__panel::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(160deg, rgba(255,255,255,0.18) 0%, transparent 55%); }
.hero__panel--1 { grid-row: 1 / span 2; background-image: url('../images/hero-1.jpg'), linear-gradient(160deg, var(--c-blue-3), var(--c-blue-2)); border-color: rgba(255,255,255,0.2); animation: heroFloat 7s ease-in-out infinite; }
.hero__panel--2 { background-image: url('../images/hero-2.jpg'), linear-gradient(135deg, #cfe2f1, #aec8e0); animation: heroFloat 9s ease-in-out 0.5s infinite reverse; }
.hero__panel--3 { background-image: url('../images/hero-3.jpg'), linear-gradient(135deg, #f1f5fa, #d6dee7); animation: heroFloat 8s ease-in-out 1s infinite; }
@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.hero__visual:hover .hero__panel { animation-play-state: paused; }

.glass { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--c-glass-border); border-radius: var(--radius); box-shadow: var(--shadow-md); }

section { padding: 70px 0; position: relative; }
@media (min-width: 720px) { section { padding: 90px 0; } }

.answer { padding: 40px 0 8px; }
.answer__summary { max-width: 940px; margin: 0 auto; font-size: 1.08rem; color: var(--c-ink-2); background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 26px 28px; box-shadow: var(--shadow-sm); }
.answer__summary strong { color: var(--c-blue-3); }

.card { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 30px 26px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(46, 127, 184, 0.4); }
.card__icon { width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); color: #fff; display: grid; place-items: center; margin-bottom: 20px; box-shadow: 0 8px 18px rgba(46, 127, 184, 0.28); }
.card__icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--c-mute); font-size: .96rem; margin-bottom: 16px; }
.card__link { font-weight: 600; font-size: .92rem; color: var(--c-blue-2); }
.card__link:hover { color: var(--c-blue-3); }

.check-list { margin: 18px 0 0; }
.check-list li { position: relative; padding-left: 32px; margin-bottom: 14px; color: var(--c-ink-2); font-size: 1rem; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 5px; width: 20px; height: 20px; border-radius: 50%; background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/13px no-repeat; }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 28px 22px; text-align: center; box-shadow: var(--shadow-sm); }
.stat__num { display: block; font-size: 2.2rem; font-weight: 800; line-height: 1; margin-bottom: 8px; color: var(--c-blue-3); letter-spacing: -0.03em; }
.stat__num.counted { animation: numberPop .6s cubic-bezier(.2,.8,.2,1); }
@keyframes numberPop { 0% { transform: scale(.9); opacity: .5; } 60% { transform: scale(1.06); } 100% { transform: scale(1); opacity: 1; } }
.stat__label { font-size: .9rem; color: var(--c-mute); }

.steps { display: grid; gap: 20px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .steps { grid-template-columns: repeat(5, 1fr); gap: 16px; } }
.steps li { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 24px 20px; box-shadow: var(--shadow-sm); }
.steps__num { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); color: #fff; font-weight: 800; margin-bottom: 14px; box-shadow: 0 6px 14px rgba(46, 127, 184, 0.28); }
.steps li h3 { font-size: 1.05rem; }
.steps li p { color: var(--c-mute); font-size: .92rem; margin: 0; }

.testimonials { background: linear-gradient(180deg, transparent, rgba(214, 234, 247, 0.45) 50%, transparent); }
.t-card { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 28px 26px; box-shadow: var(--shadow-sm); position: relative; }
.t-card::before { content: "\201C"; position: absolute; top: 6px; right: 22px; font-size: 4.5rem; color: rgba(46, 127, 184, 0.18); line-height: 1; font-family: Georgia, serif; }
.t-card p { font-style: italic; color: var(--c-ink-2); }
.t-author { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.t-author__avatar { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); color: #fff; display: grid; place-items: center; font-weight: 700; }
.t-author__name { font-weight: 600; color: var(--c-ink); font-size: .95rem; line-height: 1.2; }
.t-author__meta { font-size: .82rem; color: var(--c-mute); }
.t-stars { color: #f6b13a; letter-spacing: 2px; font-size: .95rem; margin-bottom: 8px; }

.faq__list { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 18px 22px; transition: box-shadow .25s, border-color .25s; box-shadow: var(--shadow-sm); }
.faq details[open] { border-color: rgba(46, 127, 184, 0.3); }
.faq summary { cursor: pointer; font-weight: 600; color: var(--c-ink); list-style: none; position: relative; padding-right: 32px; font-size: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: -2px; font-size: 1.5rem; line-height: 1; color: var(--c-blue-2); transition: transform .25s; }
.faq details[open] summary::after { content: "-"; }
.faq details p { margin: 14px 0 0; color: var(--c-mute); }

.cta-banner { position: relative; overflow: hidden; background: linear-gradient(135deg, var(--c-blue-3), var(--c-ink)); color: #fff; }
.cta-banner::before { content: ""; position: absolute; inset: 0; background: radial-gradient(800px circle at 100% 0%, rgba(111, 179, 223, 0.3), transparent); }
.cta-banner h2 { color: #fff; margin-bottom: 8px; }
.cta-banner p { color: rgba(255,255,255,0.85); margin: 0; }
.cta-banner__inner { display: grid; gap: 22px; align-items: center; grid-template-columns: 1fr; position: relative; z-index: 1; }
@media (min-width: 720px) { .cta-banner__inner { grid-template-columns: 1.5fr auto; } }
.cta-banner__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-banner .btn--ghost { color: #fff !important; border-color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.08); }
.cta-banner .btn--ghost:hover { background: #fff; color: var(--c-ink) !important; }

.site-footer { background: linear-gradient(180deg, var(--c-ink) 0%, #050a14 100%); color: #cbd6e2; padding-top: 64px; }
.site-footer h4 { color: #fff; font-size: .85rem; letter-spacing: .1em; margin-bottom: 16px; }
.site-footer a { color: #cbd6e2; }
.site-footer a:hover { color: #fff; }
.site-footer__grid { display: grid; gap: 30px; grid-template-columns: 1fr; padding-bottom: 44px; }
@media (min-width: 720px) { .site-footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; } }
.site-footer p { color: #9aacc0; font-size: .92rem; margin-top: 14px; }
.site-footer ul li { margin-bottom: 10px; font-size: .92rem; }
.site-footer address { font-style: normal; font-size: .92rem; line-height: 1.8; }
.site-footer__bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; text-align: center; font-size: .85rem; color: #6b7e93; }
.brand--footer .brand__text { color: #fff; }
.brand--footer .brand__text strong { color: var(--c-blue); }

.page-hero { padding: 60px 0 50px; position: relative; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; font-size: .88rem; color: var(--c-mute); margin-bottom: 18px; }
.breadcrumbs li::after { content: "/"; margin-left: 10px; opacity: .4; }
.breadcrumbs li:last-child::after { content: ""; }
.breadcrumbs a { color: var(--c-blue-2); }

.quick-links { padding: 28px 0 8px; }
.chip-list { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip-list a { display: inline-block; padding: 9px 18px; background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: 999px; font-size: .9rem; color: var(--c-ink-2); font-weight: 500; transition: all .2s; }
.chip-list a:hover { background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); color: #fff; text-decoration: none; border-color: transparent; transform: translateY(-2px); }

.service-block .grid--2 { align-items: center; }
.service-block__visual {
    border-radius: var(--radius-lg); min-height: 320px;
    background: linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214, 234, 247, 0.55));
    background-size: cover; background-position: center; background-repeat: no-repeat;
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.6);
    display: grid; place-items: center; padding: 26px; text-align: center;
    box-shadow: var(--shadow-md);
    position: relative; overflow: hidden;
    transition: transform .8s cubic-bezier(.2,.8,.2,1);
}
.service-block:hover .service-block__visual { transform: scale(1.02); }
.service-block__visual::before { content: ""; position: absolute; top: -50%; right: -30%; width: 80%; height: 200%; background: linear-gradient(45deg, transparent, rgba(255,255,255,0.4), transparent); transform: rotate(25deg); }
.placeholder { color: var(--c-blue-3); font-weight: 700; opacity: .55; font-size: 1.05rem; position: relative; }
@media (min-width: 720px) { .service-block--alt .service-block__visual { order: 2; } }

/* Per-page service hero image (set by main.js body class) */
body.svc-frameless   .service-block__visual { background-image: url('../images/service-frameless-partition.jpg'),     linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }
body.svc-glass-doors .service-block__visual { background-image: url('../images/service-glass-doors.jpg'),               linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }
body.svc-aluminium   .service-block__visual { background-image: url('../images/service-aluminium-doors-windows.jpg'),  linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }
body.svc-curtain     .service-block__visual { background-image: url('../images/service-curtain-walls.jpg'),             linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }
body.svc-handrails   .service-block__visual { background-image: url('../images/service-glass-handrails.jpg'),           linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }
body.svc-decorative  .service-block__visual { background-image: url('../images/service-decorative-glass.jpg'),          linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }
body.svc-stainless   .service-block__visual { background-image: url('../images/service-stainless-steel-cladding.jpg'), linear-gradient(135deg, rgba(255,255,255,0.55), rgba(214,234,247,0.55)); }

.value { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.value:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.value h3 { font-size: 1.05rem; color: var(--c-blue-3); margin-bottom: 8px; }
.value p { color: var(--c-mute); font-size: .94rem; margin: 0; }

.vm-card { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius-lg); padding: 36px 30px; box-shadow: var(--shadow-md); border-top: 4px solid var(--c-blue-2); }
.vm-card__icon { width: 60px; height: 60px; border-radius: 16px; background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); color: #fff; display: grid; place-items: center; margin-bottom: 22px; box-shadow: 0 8px 18px rgba(46, 127, 184, 0.28); }
.vm-card__icon svg { width: 30px; height: 30px; }

.image-stack { position: relative; min-height: 380px; display: grid; grid-template-columns: 3fr 2fr; grid-template-rows: 1fr 1fr; gap: 16px; }
.image-stack__1 {
    grid-row: 1 / span 2;
    background-image: url('../images/about-1.jpg'), linear-gradient(160deg, var(--c-blue-3), var(--c-blue-2));
    background-size: cover; background-position: center;
    border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
    transition: transform .6s cubic-bezier(.2,.8,.2,1);
}
.image-stack__2 {
    grid-row: 2;
    background-image: url('../images/about-2.jpg'), linear-gradient(135deg, #cfe2f1, #7b8694);
    background-size: cover; background-position: center;
    border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
    transition: transform .6s cubic-bezier(.2,.8,.2,1);
}
.image-stack:hover .image-stack__1 { transform: scale(1.02) rotate(-1deg); }
.image-stack:hover .image-stack__2 { transform: scale(1.05) translateY(-6px); }

.content-block { background: transparent; }

/* Projects gallery */
.gallery { display: grid; grid-template-columns: 1fr; gap: 22px; }
@media (min-width: 720px) { .gallery { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
.project { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s; }
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.project__media {
    aspect-ratio: 4/3;
    background-color: #cfe2f1;
    background-size: cover; background-position: center;
    background-image: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2));
    position: relative; overflow: hidden;
    transition: transform .6s cubic-bezier(.2,.8,.2,1);
}
.project:hover .project__media { transform: scale(1.06); }
.project__media::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%); }
.project:nth-child(1)  .project__media { background-image: url('../images/project-1.jpg'); }
.project:nth-child(2)  .project__media { background-image: url('../images/project-2.jpg'); }
.project:nth-child(3)  .project__media { background-image: url('../images/project-3.jpg'); }
.project:nth-child(4)  .project__media { background-image: url('../images/project-4.jpg'); }
.project:nth-child(5)  .project__media { background-image: url('../images/project-5.jpg'); }
.project:nth-child(6)  .project__media { background-image: url('../images/project-6.jpg'); }
.project:nth-child(7)  .project__media { background-image: url('../images/project-7.jpg'); }
.project:nth-child(8)  .project__media { background-image: url('../images/project-8.jpg'); }
.project:nth-child(9)  .project__media { background-image: url('../images/project-9.jpg'); }
.project:nth-child(10) .project__media { background-image: url('../images/project-10.jpg'); }
.project:nth-child(11) .project__media { background-image: url('../images/project-11.jpg'); }
.project:nth-child(12) .project__media { background-image: url('../images/project-12.jpg'); }
.project__media span { position: absolute; bottom: 14px; left: 18px; background: rgba(255,255,255,0.9); color: var(--c-ink); padding: 5px 12px; border-radius: 999px; font-size: .78rem; font-weight: 600; z-index: 1; }
.project__body { padding: 22px; }
.project__body h3 { font-size: 1.1rem; margin-bottom: 6px; }
.project__body p { color: var(--c-mute); font-size: .92rem; margin: 0; }

/* Blog cards */
.post-grid { display: grid; gap: 26px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .post-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .post-grid { grid-template-columns: repeat(3, 1fr); } }
.post { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s; display: flex; flex-direction: column; }
.post:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.post__media {
    aspect-ratio: 16/9;
    background-color: #cfe2f1;
    background-size: cover; background-position: center;
    background-image: linear-gradient(135deg, var(--c-blue-2), #7b8694);
    position: relative; overflow: hidden;
    transition: transform .6s cubic-bezier(.2,.8,.2,1);
}
.post:hover .post__media { transform: scale(1.06); }
.post-grid .post:nth-child(1)  .post__media { background-image: url('../images/blog-1.jpg'); }
.post-grid .post:nth-child(2)  .post__media { background-image: url('../images/blog-2.jpg'); }
.post-grid .post:nth-child(3)  .post__media { background-image: url('../images/blog-3.jpg'); }
.post-grid .post:nth-child(4)  .post__media { background-image: url('../images/blog-4.jpg'); }
.post-grid .post:nth-child(5)  .post__media { background-image: url('../images/blog-5.jpg'); }
.post-grid .post:nth-child(6)  .post__media { background-image: url('../images/blog-6.jpg'); }
.post-grid .post:nth-child(7)  .post__media { background-image: url('../images/blog-7.jpg'); }
.post-grid .post:nth-child(8)  .post__media { background-image: url('../images/blog-8.jpg'); }
.post-grid .post:nth-child(9)  .post__media { background-image: url('../images/blog-9.jpg'); }
.post-grid .post:nth-child(10) .post__media { background-image: url('../images/blog-10.jpg'); }
.post__cat { position: absolute; top: 14px; left: 16px; background: rgba(255,255,255,0.92); padding: 4px 12px; font-size: .76rem; font-weight: 700; border-radius: 999px; color: var(--c-blue-3); text-transform: uppercase; letter-spacing: .04em; z-index: 1; }
.post__body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.post__body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.post__body h3 a { color: var(--c-ink); }
.post__body h3 a:hover { color: var(--c-blue-3); }
.post__body p { color: var(--c-mute); font-size: .92rem; margin: 0 0 16px; flex: 1; }
.post__meta { font-size: .82rem; color: var(--c-mute); }

/* Article (blog post body) */
.article { max-width: 820px; margin: 0 auto; background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius-lg); padding: 40px 36px; box-shadow: var(--shadow-md); }
.article h1 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); margin-bottom: 12px; }
.article h2 { font-size: 1.5rem; margin: 32px 0 14px; }
.article h3 { font-size: 1.15rem; margin: 24px 0 10px; }
.article p, .article li { font-size: 1.02rem; color: var(--c-ink-2); }
.article ul { margin: 0 0 16px; padding-left: 0; }
.article ul li { position: relative; padding-left: 24px; margin-bottom: 8px; }
.article ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--c-blue-2); }
.article__meta { color: var(--c-mute); font-size: .9rem; margin-bottom: 18px; }
.article__meta span { margin-right: 14px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 36px; }
@media (min-width: 980px) { .contact-grid { grid-template-columns: 1.3fr 1fr; } }
.contact-card { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); }
.contact-card h3 { color: var(--c-blue-3); font-size: 1rem; }
.contact-card p, .contact-card a, .contact-card address { font-size: .96rem; color: var(--c-ink-2); }
.contact-info { display: grid; gap: 16px; }

.form { background: var(--c-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-md); }
.form__row { display: grid; gap: 18px; margin-bottom: 18px; }
@media (min-width: 600px) { .form__row--2 { grid-template-columns: 1fr 1fr; } }
.form label { display: block; font-size: .88rem; font-weight: 600; color: var(--c-ink-2); margin-bottom: 6px; }
.form input, .form select, .form textarea { width: 100%; padding: 13px 16px; font-size: 1rem; font-family: inherit; border: 1.5px solid rgba(15, 23, 42, 0.12); border-radius: 12px; background: rgba(255, 255, 255, 0.7); color: var(--c-ink); transition: border-color .2s, box-shadow .2s; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--c-blue-2); box-shadow: 0 0 0 4px rgba(46, 127, 184, .15); background: #fff; }
.form textarea { min-height: 130px; resize: vertical; }
.form__note { font-size: .84rem; color: var(--c-mute); margin: 8px 0 16px; }

.map-wrap { border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 10; background: var(--c-glass); box-shadow: var(--shadow-sm); }
.map-wrap iframe { width: 100%; height: 100%; border: 0; display: block; }

/* Floating action buttons */
.float-actions { position: fixed; right: 18px; bottom: 18px; z-index: 200; display: flex; flex-direction: column; gap: 12px; }
.float-btn { position: relative; width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; color: #fff; box-shadow: 0 12px 28px rgba(15, 23, 42, 0.25); transition: transform .2s ease; text-decoration: none; }
.float-btn:hover { transform: scale(1.08); text-decoration: none; }
.float-btn--whatsapp { background: #25d366; }
.float-btn--call { background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2)); }
.float-btn svg { width: 26px; height: 26px; }
.float-btn--whatsapp::before { content: ""; position: absolute; inset: -4px; border-radius: 50%; background: rgba(37,211,102,0.35); z-index: -1; animation: pulse 2s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(0.95); opacity: .8; } 70% { transform: scale(1.4); opacity: 0; } 100% { transform: scale(1.4); opacity: 0; } }

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); will-change: transform, opacity; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.stagger > * { opacity: 0; transform: translateY(20px); transition: opacity .55s ease, transform .55s ease; }
.stagger.in-view > *:nth-child(1) { transition-delay: .05s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(2) { transition-delay: .12s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(3) { transition-delay: .19s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(4) { transition-delay: .26s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(5) { transition-delay: .33s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(6) { transition-delay: .4s;  opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(7) { transition-delay: .47s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(8) { transition-delay: .54s; opacity: 1; transform: translateY(0); }
.stagger.in-view > *:nth-child(n+9) { transition-delay: .6s; opacity: 1; transform: translateY(0); }

/* Hero text reveal */
.hero h1 { animation: fadeUp 1.05s cubic-bezier(.2,.8,.2,1) both; }
.hero .lede { animation: fadeUp 1.1s .15s cubic-bezier(.2,.8,.2,1) both; }
.hero .hero__cta { animation: fadeUp 1.15s .3s cubic-bezier(.2,.8,.2,1) both; }
.hero .hero__badges { animation: fadeUp 1.2s .45s cubic-bezier(.2,.8,.2,1) both; }
.hero .eyebrow { animation: fadeUp 1s cubic-bezier(.2,.8,.2,1) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* Image fade-in */
img { transition: opacity .4s ease; }
img[loading="lazy"] { opacity: 0; }
img.is-loaded { opacity: 1; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(46,127,184,0.3); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(46,127,184,0.6); }

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

/* ==========================================================================
   Floating action button labels — hidden by default, show on hover
   ========================================================================== */
.float-btn { position: relative; }
.float-btn__label {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    background: rgba(11, 18, 32, 0.92);
    color: #fff;
    padding: 7px 12px;
    border-radius: 8px;
    font-size: .82rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
    box-shadow: 0 6px 18px rgba(11, 18, 32, 0.25);
    line-height: 1;
}
.float-btn__label::after {
    content: "";
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: rgba(11, 18, 32, 0.92);
}
.float-btn:hover .float-btn__label,
.float-btn:focus-visible .float-btn__label {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

/* Hide labels on small screens so they never overlap the page */
@media (max-width: 600px) {
    .float-btn__label { display: none; }
}

/* ==========================================================================
   Chat-bot widget (Raihan Assistant)
   ========================================================================== */
.chat-fab {
    position: fixed; right: 18px; bottom: 152px; z-index: 200;
    width: 60px; height: 60px; border-radius: 50%;
    background: linear-gradient(135deg, #0e3a5f, #2f7fb8);
    color: #fff; border: 0; cursor: pointer;
    display: grid; place-items: center;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.3);
    transition: transform .25s ease;
}
.chat-fab:hover { transform: scale(1.08); }
.chat-fab svg { width: 28px; height: 28px; }
.chat-fab__dot {
    position: absolute; top: 4px; right: 4px;
    width: 14px; height: 14px; border-radius: 50%;
    background: #25d366; border: 2px solid #fff;
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    animation: chatDot 2s ease-in-out infinite;
}
@keyframes chatDot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    50%      { box-shadow: 0 0 0 8px rgba(37, 211, 102, 0); }
}

.chat-panel {
    position: fixed; right: 18px; bottom: 90px; z-index: 201;
    width: min(360px, calc(100vw - 36px));
    height: 540px; max-height: calc(100vh - 120px);
    background: #fff;
    border-radius: 22px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.28);
    display: flex; flex-direction: column;
    overflow: hidden;
    opacity: 0; transform: translateY(16px) scale(.96);
    pointer-events: none;
    transition: opacity .28s cubic-bezier(.2,.8,.2,1), transform .28s cubic-bezier(.2,.8,.2,1);
}
.chat-panel.is-open { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }

.chat-head {
    background: linear-gradient(135deg, #0e3a5f, #2f7fb8);
    color: #fff; padding: 16px 18px;
    display: flex; align-items: center; gap: 12px;
}
.chat-head__avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: #fff url('../images/logo.svg') center/82% no-repeat;
    flex-shrink: 0;
}
.chat-head__title { font-weight: 700; font-size: .98rem; line-height: 1.2; }
.chat-head__sub { font-size: .78rem; opacity: .85; display: flex; align-items: center; gap: 6px; margin-top: 2px; }
.chat-head__sub::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #25d366; }
.chat-head__close {
    margin-left: auto; background: rgba(255,255,255,0.15); color: #fff;
    width: 32px; height: 32px; border-radius: 50%; border: 0;
    display: grid; place-items: center; cursor: pointer;
    transition: background .2s;
}
.chat-head__close:hover { background: rgba(255,255,255,0.3); }

.chat-body {
    flex: 1; overflow-y: auto;
    padding: 16px;
    background: #f4f7fb;
    display: flex; flex-direction: column; gap: 10px;
    scroll-behavior: smooth;
}
.chat-msg {
    max-width: 82%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: .92rem;
    line-height: 1.45;
    animation: msgIn .35s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.chat-msg--bot {
    align-self: flex-start;
    background: #fff;
    color: #1f2937;
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.06);
}
.chat-msg--user {
    align-self: flex-end;
    background: linear-gradient(135deg, #0e3a5f, #2f7fb8);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.chat-typing {
    align-self: flex-start; display: inline-flex; gap: 4px;
    padding: 12px 14px; background: #fff; border-radius: 16px;
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.06);
}
.chat-typing span {
    width: 7px; height: 7px; border-radius: 50%;
    background: #5b6b7d; opacity: .4;
    animation: typingDot 1s infinite ease-in-out;
}
.chat-typing span:nth-child(2) { animation-delay: .15s; }
.chat-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes typingDot {
    0%, 60%, 100% { transform: translateY(0); opacity: .4; }
    30% { transform: translateY(-4px); opacity: 1; }
}

.chat-quick {
    align-self: flex-start;
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-top: -2px; max-width: 100%;
}
.chat-quick button {
    background: #fff;
    border: 1.5px solid #2f7fb8;
    color: #0e3a5f;
    font-size: .85rem;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: all .2s;
    font-family: inherit;
}
.chat-quick button:hover {
    background: #0e3a5f;
    color: #fff;
    transform: translateY(-1px);
}

.chat-foot {
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    padding: 12px;
    background: #fff;
    display: flex; gap: 8px; align-items: center;
}
.chat-foot input {
    flex: 1; border: 1.5px solid rgba(15, 23, 42, 0.12);
    background: #f4f7fb;
    border-radius: 999px; padding: 10px 16px;
    font-size: .92rem; font-family: inherit;
    color: #1f2937; outline: none;
    transition: border-color .2s, background .2s;
}
.chat-foot input:focus { border-color: #2f7fb8; background: #fff; }
.chat-foot button {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, #0e3a5f, #2f7fb8);
    color: #fff; border: 0; cursor: pointer;
    display: grid; place-items: center;
    transition: transform .2s;
}
.chat-foot button:hover { transform: scale(1.05); }
.chat-foot button svg { width: 18px; height: 18px; }
.chat-foot__brand {
    text-align: center; font-size: .72rem; color: #5b6b7d;
    padding: 6px 0 8px;
    background: #fff;
    border-top: 1px solid rgba(15, 23, 42, 0.04);
}

@media (max-width: 480px) {
    .chat-fab { bottom: 142px; right: 14px; width: 54px; height: 54px; }
    .chat-panel { right: 12px; bottom: 80px; height: 70vh; }
}

/* ==========================================================================
   DARK MODE — toggle via [data-theme="dark"] on <html>
   Plus UI/UX refinements for a more premium feel
   ========================================================================== */

html {
    transition: background-color .35s ease, color .35s ease;
}

html[data-theme="dark"] {
    --c-bg: #0a1220;
    --c-bg-2: #0f1b2d;
    --c-ink: #f1f5f9;
    --c-ink-2: #e2e8f0;
    --c-mute: #94a3b8;
    --c-line: rgba(255, 255, 255, 0.08);
    --c-blue: #93c5fd;
    --c-blue-2: #60a5fa;
    --c-blue-3: #3b82f6;
    --c-accent: #1e3a5f;
    --c-glass: rgba(20, 30, 50, 0.55);
    --c-glass-dark: rgba(0, 0, 0, 0.55);
    --c-glass-border: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
}

html[data-theme="dark"] body {
    background: var(--c-bg);
    color: var(--c-ink-2);
}
html[data-theme="dark"] body::before { background: radial-gradient(circle at center, rgba(59,130,246,0.18) 0%, transparent 70%); }
html[data-theme="dark"] body::after  { background: radial-gradient(circle at center, rgba(20,184,166,0.12) 0%, transparent 70%); }

html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4 { color: var(--c-ink); }

html[data-theme="dark"] a { color: var(--c-blue); }
html[data-theme="dark"] a:hover { color: #bae6fd; }

html[data-theme="dark"] .topbar { background: rgba(0, 0, 0, 0.85); border-bottom-color: rgba(255,255,255,0.06); }

html[data-theme="dark"] .site-header {
    background: rgba(15, 27, 45, 0.7);
    border-bottom-color: rgba(255, 255, 255, 0.06);
}
html[data-theme="dark"] .site-header.is-scrolled { box-shadow: 0 4px 22px rgba(0, 0, 0, 0.4); }
html[data-theme="dark"] .brand__text { color: var(--c-ink); }
html[data-theme="dark"] .brand__text strong { color: var(--c-blue); }
html[data-theme="dark"] .brand__mark {
    background-color: #fff;
    border-color: rgba(255,255,255,0.15);
}
html[data-theme="dark"] .nav-toggle span { background: var(--c-ink); }
html[data-theme="dark"] .primary-nav a { color: var(--c-ink-2); }
html[data-theme="dark"] .primary-nav a:hover { background: rgba(255,255,255,0.06); }
html[data-theme="dark"] .primary-nav a.is-active { color: var(--c-blue); }
html[data-theme="dark"] .primary-nav { background: rgba(15, 27, 45, 0.97); }
html[data-theme="dark"] .dropdown {
    background: rgba(15, 27, 45, 0.95);
    border-color: rgba(255,255,255,0.08);
}
html[data-theme="dark"] .dropdown a { color: var(--c-ink-2); }
html[data-theme="dark"] .dropdown a:hover { background: rgba(96, 165, 250, 0.12); color: var(--c-blue); }

/* Cards in dark */
html[data-theme="dark"] .card,
html[data-theme="dark"] .value,
html[data-theme="dark"] .vm-card,
html[data-theme="dark"] .stat,
html[data-theme="dark"] .t-card,
html[data-theme="dark"] .steps li,
html[data-theme="dark"] .post,
html[data-theme="dark"] .project,
html[data-theme="dark"] .contact-card,
html[data-theme="dark"] .form,
html[data-theme="dark"] .article,
html[data-theme="dark"] .answer__summary,
html[data-theme="dark"] .faq details,
html[data-theme="dark"] .chip-list a {
    background: rgba(20, 30, 50, 0.55);
    border-color: rgba(255, 255, 255, 0.08);
    color: var(--c-ink-2);
}
html[data-theme="dark"] .card:hover { border-color: rgba(96, 165, 250, 0.4); }
html[data-theme="dark"] .answer__summary strong,
html[data-theme="dark"] .stat__num,
html[data-theme="dark"] .value h3,
html[data-theme="dark"] .contact-card h3,
html[data-theme="dark"] .card__link { color: var(--c-blue); }
html[data-theme="dark"] .card__link:hover { color: #bae6fd; }

html[data-theme="dark"] .post__body h3 a { color: var(--c-ink); }
html[data-theme="dark"] .post__body h3 a:hover { color: var(--c-blue); }
html[data-theme="dark"] .post__cat { background: rgba(96,165,250,0.18); color: var(--c-blue); }
html[data-theme="dark"] .project__media span { background: rgba(15, 27, 45, 0.85); color: var(--c-ink); }

html[data-theme="dark"] .faq summary { color: var(--c-ink); }
html[data-theme="dark"] .faq summary::after { color: var(--c-blue); }
html[data-theme="dark"] .faq details p { color: var(--c-mute); }

html[data-theme="dark"] .form input,
html[data-theme="dark"] .form select,
html[data-theme="dark"] .form textarea {
    background: rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.12);
    color: var(--c-ink);
}
html[data-theme="dark"] .form input:focus,
html[data-theme="dark"] .form select:focus,
html[data-theme="dark"] .form textarea:focus {
    background: rgba(0, 0, 0, 0.45);
    border-color: var(--c-blue);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.18);
}
html[data-theme="dark"] .form label { color: var(--c-ink-2); }

html[data-theme="dark"] .check-list li { color: var(--c-ink-2); }
html[data-theme="dark"] .lede { color: var(--c-ink-2); }
html[data-theme="dark"] .section-sub { color: var(--c-mute); }
html[data-theme="dark"] p { color: var(--c-ink-2); }
html[data-theme="dark"] .article p,
html[data-theme="dark"] .article li { color: var(--c-ink-2); }
html[data-theme="dark"] .breadcrumbs { color: var(--c-mute); }
html[data-theme="dark"] .stat__label { color: var(--c-mute); }
html[data-theme="dark"] .post__meta,
html[data-theme="dark"] .article__meta { color: var(--c-mute); }
html[data-theme="dark"] .placeholder { color: var(--c-blue); opacity: .55; }
html[data-theme="dark"] .form__note { color: var(--c-mute); }

html[data-theme="dark"] .btn--ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--c-ink) !important;
    border-color: rgba(255, 255, 255, 0.12);
}
html[data-theme="dark"] .btn--ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.4);
}

html[data-theme="dark"] .cta-banner {
    background: linear-gradient(135deg, #1e3a5f, #0a1220);
}

/* Map container */
html[data-theme="dark"] .map-wrap iframe { filter: invert(0.92) hue-rotate(180deg) saturate(0.5) brightness(0.95); }

/* Chat widget in dark mode */
html[data-theme="dark"] .chat-panel { background: #0f1b2d; border-color: rgba(255,255,255,0.08); }
html[data-theme="dark"] .chat-body { background: #0a1220; }
html[data-theme="dark"] .chat-msg--bot { background: rgba(255,255,255,0.06); color: var(--c-ink); }
html[data-theme="dark"] .chat-typing { background: rgba(255,255,255,0.06); }
html[data-theme="dark"] .chat-typing span { background: var(--c-mute); }
html[data-theme="dark"] .chat-foot { background: #0f1b2d; border-top-color: rgba(255,255,255,0.08); }
html[data-theme="dark"] .chat-foot input { background: rgba(255,255,255,0.06); color: var(--c-ink); border-color: rgba(255,255,255,0.1); }
html[data-theme="dark"] .chat-foot input:focus { background: rgba(255,255,255,0.1); }
html[data-theme="dark"] .chat-foot__brand { background: #0f1b2d; color: var(--c-mute); border-top-color: rgba(255,255,255,0.04); }
html[data-theme="dark"] .chat-quick button { background: rgba(96,165,250,0.08); border-color: var(--c-blue); color: var(--c-blue); }
html[data-theme="dark"] .chat-quick button:hover { background: var(--c-blue); color: #0a1220; }

/* ==========================================================================
   THEME TOGGLE BUTTON
   ========================================================================== */
.theme-toggle {
    width: 42px; height: 42px;
    display: grid; place-items: center;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 999px;
    cursor: pointer; padding: 0;
    color: var(--c-ink-2);
    transition: transform .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
    margin-right: 4px;
}
.theme-toggle:hover { transform: scale(1.08) rotate(15deg); background: #fff; border-color: var(--c-blue-2); color: var(--c-blue-3); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); color: var(--c-ink); }
html[data-theme="dark"] .theme-toggle:hover { background: rgba(255,255,255,0.12); color: var(--c-blue); }
html[data-theme="dark"] .theme-toggle .icon-sun  { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ==========================================================================
   UI/UX REFINEMENTS — premium polish
   ========================================================================== */

/* Smoother global transitions */
.card, .value, .vm-card, .stat, .t-card, .steps li, .post, .project, .contact-card,
.faq details, .chip-list a, .form input, .form select, .form textarea {
    transition: transform .3s cubic-bezier(.2,.8,.2,1),
                box-shadow .3s ease,
                border-color .3s ease,
                background .3s ease,
                color .3s ease;
}

/* Subtle inner glow on glass cards */
.card::before, .vm-card::before, .stat::before, .t-card::before {
    content: ""; position: absolute; inset: 0; border-radius: inherit;
    background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%), rgba(96, 165, 250, 0.12), transparent 40%);
    opacity: 0; pointer-events: none;
    transition: opacity .35s ease;
}
.card:hover::before, .vm-card:hover::before, .stat:hover::before, .t-card:hover::before { opacity: 1; }
.t-card::before { background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 0%), rgba(96, 165, 250, 0.1), transparent 40%); }

/* Buttons — refined gradient + glow */
.btn--primary {
    background: linear-gradient(135deg, var(--c-blue-3) 0%, var(--c-blue-2) 50%, var(--c-blue-3) 100%);
    background-size: 200% 200%;
    transition: background-position .5s ease, transform .25s ease, box-shadow .25s ease;
}
.btn--primary:hover { background-position: 100% 100%; }
html[data-theme="dark"] .btn--primary {
    background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-2), var(--c-blue));
    background-size: 200% 200%;
    box-shadow: 0 8px 22px rgba(59, 130, 246, 0.4);
}

/* Section title gradient on key headings */
.hero h1, .page-hero h1 {
    background: linear-gradient(135deg, var(--c-ink) 0%, var(--c-blue-3) 60%, var(--c-blue-2) 100%);
    -webkit-background-clip: text; background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}
html[data-theme="dark"] .hero h1, html[data-theme="dark"] .page-hero h1 {
    background: linear-gradient(135deg, #fff 0%, #93c5fd 60%, #60a5fa 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Eyebrow refinement */
.eyebrow { position: relative; padding-left: 28px; }
.eyebrow::before {
    content: ""; position: absolute; left: 0; top: 50%;
    width: 20px; height: 2px; background: var(--c-blue-2);
    transform: translateY(-50%);
}
html[data-theme="dark"] .eyebrow::before { background: var(--c-blue); }

/* Card refinements */
.card { padding: 32px 28px; }
.card:hover .card__icon { transform: rotate(-6deg) scale(1.08); box-shadow: 0 12px 28px rgba(46, 127, 184, 0.45); }
.card__icon { transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s ease; }

/* Smoother section dividers */
section { position: relative; }

/* Improved scroll indicator on hero */
.hero::after {
    content: ""; position: absolute; bottom: 24px; left: 50%;
    width: 24px; height: 38px; border: 2px solid rgba(46, 127, 184, 0.4);
    border-radius: 14px; transform: translateX(-50%);
    pointer-events: none;
}
.hero::before {
    content: ""; position: absolute; bottom: 32px; left: 50%;
    width: 4px; height: 8px; background: var(--c-blue-2);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scrollHint 1.8s cubic-bezier(.4,0,.2,1) infinite;
    pointer-events: none;
    z-index: 1;
}
@keyframes scrollHint {
    0%   { transform: translate(-50%, 0); opacity: 1; }
    60%  { transform: translate(-50%, 14px); opacity: 0; }
    61%  { transform: translate(-50%, 0); opacity: 0; }
    100% { transform: translate(-50%, 0); opacity: 1; }
}
@media (max-width: 720px) { .hero::after, .hero::before { display: none; } }
html[data-theme="dark"] .hero::after { border-color: rgba(96, 165, 250, 0.4); }

/* Refined hover for stats — subtle lift */
.stat { transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s ease; }
.stat:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

/* Theme transition flash prevention */
html, body, .card, .value, .vm-card, .stat, .t-card, .steps li, .post, .project,
.contact-card, .form, .article, .answer__summary, .faq details, .chip-list a,
.site-header, .topbar, .primary-nav, .dropdown, .form input, .form select, .form textarea {
    transition: background-color .35s ease, color .35s ease, border-color .35s ease;
}

/* Accessibility — focus rings */
.theme-toggle:focus-visible, .btn:focus-visible, .float-btn:focus-visible, .chat-fab:focus-visible {
    outline: 3px solid var(--c-blue-2);
    outline-offset: 3px;
}