/* ============================================================
   HealthKattaa - corporate site
   Premium, responsive, dependency-free (no jQuery/Bootstrap)
   ============================================================ */
:root {
    --navy: #0f2b58;
    --primary: #045688;
    --accent: #12a8a0;
    --accent-2: #4fbe82;
    --ink: #16324a;
    --muted: #5b6b7c;
    --line: #e3ecf5;
    --bg: #f5f9fc;
    --card: #ffffff;
    --shadow: 0 10px 30px rgba(15, 43, 88, .10);
    --shadow-lg: 0 20px 50px rgba(15, 43, 88, .16);
    --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Plus Jakarta Sans', 'Segoe UI', system-ui, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--accent); }
.container { width: min(1140px, 92%); margin: 0 auto; }
.center { text-align: center; }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}
.nav-wrap {
    display: flex; align-items: center; gap: 20px;
    padding: 10px 0;
}
.brand img { height: 46px; width: auto; }
.main-nav {
    margin-left: auto;
    display: flex; align-items: center; gap: 4px;
}
.main-nav a {
    padding: 9px 16px; border-radius: 10px;
    color: var(--navy); font-weight: 600; font-size: 15px;
    transition: background .18s, color .18s;
}
.main-nav a:hover { background: #eaf3fa; color: var(--primary); }
.main-nav a.active { background: var(--primary); color: #fff; }
.main-nav .nav-app {
    margin-left: 8px;
    background: var(--navy); color: #fff;
    box-shadow: 0 6px 16px rgba(15,43,88,.25);
}
.main-nav .nav-app:hover { background: var(--primary); color: #fff; }

.nav-toggle {
    display: none; margin-left: auto;
    width: 44px; height: 44px; border: 1px solid var(--line);
    border-radius: 12px; background: #fff; cursor: pointer;
    flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--navy); border-radius: 2px; }

@media (max-width: 860px) {
    .nav-toggle { display: inline-flex; }
    .main-nav {
        position: fixed; top: 66px; right: 0; left: 0;
        flex-direction: column; align-items: stretch;
        background: #fff; border-bottom: 1px solid var(--line);
        padding: 10px 4%; gap: 2px;
        box-shadow: var(--shadow);
        transform: translateY(-130%);
        transition: transform .25s ease;
    }
    .main-nav.open { transform: none; }
    .main-nav a { padding: 12px 14px; }
    .main-nav .nav-app { margin: 6px 0 0; text-align: center; }
}

/* ---------- Hero ---------- */
.hero {
    position: relative; overflow: hidden;
    background: linear-gradient(120deg, #eaf4fb 0%, #f6fbff 55%, #eefaf5 100%);
}
.hero-slide {
    position: absolute; inset: 0; opacity: 0;
    transition: opacity .8s ease;
}
.hero-slide.active { opacity: 1; position: relative; }
.hero-slide img { width: 100%; height: auto; display: block; }
.hero-dots {
    position: absolute; bottom: 16px; left: 0; right: 0;
    display: flex; justify-content: center; gap: 8px; z-index: 3;
}
.hero-dots span {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(15,43,88,.18); cursor: pointer;
    transition: all .25s;
}
.hero-dots span.active { width: 30px; border-radius: 99px; background: var(--primary); }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.eyebrow {
    display: inline-block; font-size: 12.5px; font-weight: 800;
    letter-spacing: 2px; text-transform: uppercase;
    color: var(--accent); margin-bottom: 10px;
}
.section-title h2 {
    font-size: clamp(26px, 3.4vw, 38px); margin: 0 0 14px;
    color: var(--navy); font-weight: 800; letter-spacing: -.5px;
}
.section-title p { color: var(--muted); max-width: 720px; margin: 0 auto 40px; }

/* ---------- About split ---------- */
.about-grid {
    display: grid; grid-template-columns: 1.05fr .95fr;
    gap: 48px; align-items: center;
}
.about-grid .lead { font-size: 17px; color: var(--muted); }
.about-points { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.about-points li {
    display: flex; gap: 12px; align-items: flex-start;
    font-weight: 600; color: var(--ink); font-size: 15px;
}
.about-points li::before {
    content: ''; flex: none; width: 22px; height: 22px; margin-top: 2px;
    border-radius: 7px; background: var(--accent);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/14px no-repeat, linear-gradient(#fff,#fff);
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/14px no-repeat, linear-gradient(#fff,#fff);
    mask-composite: exclude; -webkit-mask-composite: xor;
    background-color: var(--accent);
}
.about-visual { position: relative; }
.about-visual img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }

@media (max-width: 860px) {
    .about-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ---------- Service cards ---------- */
.svc-grid {
    display: grid; gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.svc-card {
    background: var(--card); border-radius: var(--radius);
    border: 1px solid var(--line); overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .25s ease, box-shadow .25s ease;
    display: flex; flex-direction: column;
}
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.svc-card .svc-img { height: 170px; overflow: hidden; background: #eef4fa; }
.svc-card .svc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.svc-card:hover .svc-img img { transform: scale(1.06); }
.svc-card .svc-body { padding: 18px 18px 20px; flex: 1; }
.svc-card h3 { margin: 0 0 8px; font-size: 16.5px; color: var(--navy); font-weight: 800; }
.svc-card p { margin: 0; font-size: 13.5px; color: var(--muted); line-height: 1.55; }

/* ---------- App CTA band ---------- */
.app-cta {
    background: linear-gradient(120deg, var(--navy), var(--primary));
    border-radius: 22px; color: #fff;
    padding: 44px clamp(22px, 5vw, 60px);
    display: flex; align-items: center; gap: 30px;
    box-shadow: var(--shadow-lg);
    position: relative; overflow: hidden;
}
.app-cta::after {
    content: ''; position: absolute; right: -70px; top: -70px;
    width: 240px; height: 240px; border-radius: 50%;
    background: rgba(255,255,255,.08);
}
.app-cta h2 { margin: 0 0 8px; font-size: clamp(20px, 2.6vw, 30px); }
.app-cta p { margin: 0; color: #cfe3f4; max-width: 560px; }
.app-cta .cta-right { margin-left: auto; position: relative; z-index: 1; }
.play-badge {
    display: inline-flex; align-items: center; gap: 10px;
    background: #fff; border-radius: 14px; padding: 10px 18px;
    box-shadow: 0 10px 24px rgba(0,0,0,.25);
    transition: transform .2s;
}
.play-badge:hover { transform: translateY(-2px); }
.play-badge img { height: 34px; }
.play-badge span { color: var(--navy); font-weight: 800; font-size: 14px; line-height: 1.2; }
.play-badge small { display: block; color: var(--muted); font-size: 11px; font-weight: 600; }
@media (max-width: 720px) {
    .app-cta { flex-direction: column; text-align: center; }
    .app-cta .cta-right { margin: 0; }
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
    margin-bottom: 16px;
}
.contact-info-card h3 { margin: 0 0 6px; font-size: 15px; color: var(--navy); }
.contact-info-card p { margin: 0; font-size: 14px; color: var(--muted); }
.form-card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: clamp(20px, 4vw, 36px);
    box-shadow: var(--shadow);
}
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .f-row { grid-template-columns: 1fr; } }
.f-field { margin-bottom: 14px; }
.f-field label { display: block; font-size: 13px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.f-field input, .f-field textarea {
    width: 100%; padding: 12px 14px; font: inherit; font-size: 14px;
    border: 1px solid var(--line); border-radius: 12px; background: #fbfdff;
    transition: border-color .15s, box-shadow .15s;
}
.f-field input:focus, .f-field textarea:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(4,86,136,.10); background: #fff;
}
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: linear-gradient(135deg, var(--primary), var(--navy));
    color: #fff; border: none; border-radius: 12px;
    padding: 13px 26px; font: inherit; font-weight: 800; font-size: 15px;
    cursor: pointer; transition: transform .15s, box-shadow .2s;
    box-shadow: 0 8px 20px rgba(4,86,136,.30);
    width: 100%;
}
.btn-primary:hover { transform: translateY(-2px); color: #fff; }
.form-note { display: none; margin-top: 12px; font-size: 14px; font-weight: 600; color: #0e7a4a; }
.form-note.show { display: block; }

/* ---------- Legal / policy pages ---------- */
.legal-wrap {
    width: min(920px, 92%); margin: 0 auto; padding: 44px 0 64px;
}
.legal-wrap .heading {
    background: var(--navy); color: #fff;
    border-radius: 14px; padding: 14px 22px;
    font-size: 19px; font-weight: 800; letter-spacing: .4px;
    text-align: center; margin: 34px 0 22px;
}
.legal-wrap .heading:first-child { margin-top: 0; }
.legal-wrap .date h4, .legal-wrap .date {
    font-size: 13px; color: var(--muted); font-weight: 600;
    margin: -14px 0 18px; text-align: center;
}
.legal-wrap .contain {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: clamp(18px, 4vw, 40px);
    box-shadow: var(--shadow); text-align: justify;
    font-size: 14.5px; color: var(--ink);
}
.legal-wrap .contain p { margin: 0 0 14px; line-height: 1.75; }
.legal-wrap .contain h4, .legal-wrap .contain h5 { color: var(--navy); margin: 20px 0 8px; }
.legal-wrap .contain ul, .legal-wrap .contain ol { padding-left: 22px; margin: 0 0 14px; }
.legal-wrap .contain li { margin-bottom: 6px; }
.legal-wrap center > .footer { display: none; }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--navy); color: #dbe7f5; margin-top: 40px;
}
.footer-grid {
    display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
    gap: 34px; padding: 52px 0 34px;
}
.site-footer h4 { color: #fff; font-size: 15px; margin: 0 0 14px; letter-spacing: .3px; }
.site-footer p, .site-footer a { font-size: 13.5px; color: #b9cbe0; line-height: 1.7; }
.site-footer a { display: block; padding: 2px 0; }
.site-footer a:hover { color: #fff; }
.foot-brand img { height: 44px; background: #fff; border-radius: 10px; padding: 6px 10px; margin-bottom: 14px; }
.foot-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); border-radius: 12px; padding: 8px 14px; margin-top: 12px; }
.foot-badge img { height: 26px; }
.foot-badge span { color: #fff; font-weight: 700; font-size: 12.5px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 16px 0; font-size: 12.5px; color: #93aac6;
    display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Back to top ---------- */
#toTop {
    position: fixed; right: 18px; bottom: 18px; z-index: 90;
    width: 44px; height: 44px; border-radius: 12px; border: none;
    background: var(--primary); color: #fff; font-size: 20px; cursor: pointer;
    box-shadow: var(--shadow); display: none;
}
#toTop.show { display: block; }

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 90px 0 110px; }
.notfound h1 { font-size: clamp(64px, 14vw, 120px); margin: 0; color: var(--primary); font-weight: 900; }
.notfound p { color: var(--muted); margin: 6px 0 26px; }