/* ==========================================================================
   Zamnaik Healthcare — Design System
   Palette: clinical white/grey base, deep ink text, one trust-blue accent,
   one wellness-mint accent used sparingly for positive health signals.
   ========================================================================== */

:root {
  --white: #ffffff;
  --fog: #f5f5f7;
  --fog-2: #ebebee;
  --ink: #1d1d1f;
  --ink-soft: #4b4b4f;
  --ink-faint: #86868b;
  --line: #d8d8dc;
  --blue: #0a5fff;
  --blue-deep: #0a3fb0;
  --mint: #22a67f;
  --mint-tint: #e6f6f0;
  --danger: #c1401d;

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;

  --shadow-1: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-2: 0 4px 12px rgba(0,0,0,0.06), 0 24px 48px rgba(0,0,0,0.10);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, Roboto, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font-family: inherit; }

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 6vw;
}

/* ---------- Typography ---------- */

h1, h2, h3, h4 { letter-spacing: -0.02em; font-weight: 600; }

.display-1, .display-2, .nav-logo, .logo {
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.display-1 {
  font-size: clamp(2.6rem, 6.5vw, 5.4rem);
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.display-2 {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.eyebrow {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--mint);
  flex-shrink: 0;
}

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: var(--ink-soft);
  max-width: 640px;
  line-height: 1.55;
}

.body-text { font-size: 1.02rem; color: var(--ink-soft); line-height: 1.65; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 980px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.15s var(--ease), background 0.15s var(--ease), box-shadow 0.15s var(--ease);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:active { transform: scale(0.96); transition-duration: 0.08s; }

.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-deep); transform: translateY(-1px); box-shadow: var(--shadow-1); }
.btn-primary:active { background: var(--blue-deep); transform: scale(0.96); }

.btn-ghost { background: transparent; color: var(--blue); border-color: var(--line); }
.btn-ghost:hover { background: var(--fog); }
.btn-ghost:active { background: var(--fog-2); transform: scale(0.96); }

.btn-light { background: var(--white); color: var(--ink); }
.btn-light:hover { transform: translateY(-1px); box-shadow: var(--shadow-1); }
.btn-light:active { transform: scale(0.96); }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.nav.scrolled { border-bottom-color: var(--line); }

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 6vw;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
.nav-logo span { color: var(--mint); }

.nav-links {
  display: flex;
  gap: 30px;
  font-size: 0.86rem;
  font-weight: 500;
}

.nav-links a { color: var(--ink-soft); transition: color 0.15s var(--ease); }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }

.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-cta .btn { padding: 8px 18px; font-size: 0.86rem; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px; height: 32px;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 6px; right: 6px; height: 2px; background: var(--ink);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 11px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-cta .btn-ghost { display: none; }

  .mobile-panel {
    position: fixed; inset: 56px 0 0 0;
    background: var(--white);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
    padding: 24px 6vw;
    z-index: 99;
  }
  .mobile-panel.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .mobile-panel a { display: block; padding: 16px 0; font-size: 1.3rem; font-weight: 600; border-bottom: 1px solid var(--fog-2); }
}
@media (min-width: 861px) { .mobile-panel { display: none; } }

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 64px;
  text-align: center;
}

.hero-media {
  margin-top: 48px;
  border-radius: var(--radius-lg);
  height: clamp(240px, 40vw, 460px);
  background: linear-gradient(135deg, #eaf2ff 0%, var(--fog) 55%, var(--mint-tint) 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-media .pulse-line {
  width: 70%;
  height: 2px;
  background: var(--line);
  position: relative;
}
.hero-media svg { width: 60%; max-width: 520px; }

/* ---------- Sections ---------- */

section { padding: 88px 0; }
.section-fog { background: var(--fog); }
.section-tight { padding: 52px 0; }
.section-spacious { padding: 136px 0; }

.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }

/* ---------- Cards / Grid ---------- */

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--fog-2);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }

.card-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--mint-tint);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--mint);
}

.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 0.96rem; }

.card-link { margin-top: 18px; font-size: 0.9rem; font-weight: 600; color: var(--blue); display: inline-flex; align-items: center; gap: 4px; }

/* ---------- Stats strip ---------- */

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
  padding: 56px 0;
  border-top: 1px solid var(--fog-2);
  border-bottom: 1px solid var(--fog-2);
}
.stats-strip .num { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 700; color: var(--ink); }
.stats-strip .label { font-size: 0.82rem; color: var(--ink-faint); margin-top: 4px; }
@media (max-width: 700px) { .stats-strip { grid-template-columns: repeat(2, 1fr); } }

/* ---------- CTA band ---------- */

.cta-band {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 72px 6vw;
  text-align: center;
}
.cta-band .display-2 { color: var(--white); }
.cta-band .lede { color: rgba(255,255,255,0.82); margin: 0 auto; }
.cta-band .btn-primary { background: var(--white); color: var(--blue-deep); }
.cta-band .btn-primary:hover { background: var(--fog); }

/* ---------- Forms ---------- */

.form-card {
  background: var(--fog);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 620px;
  margin: 0 auto;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 0.96rem;
  font-family: inherit;
}
.field textarea { resize: vertical; min-height: 100px; }

.form-note { font-size: 0.8rem; color: var(--ink-faint); margin-top: 14px; }
.form-success { display: none; background: var(--mint-tint); color: var(--mint); padding: 14px 18px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem; margin-top: 18px; }

/* ---------- Footer ---------- */

footer {
  background: var(--fog);
  padding: 64px 0 32px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.footer-grid h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); margin-bottom: 16px; }
.footer-grid a { display: block; font-size: 0.92rem; color: var(--ink-soft); padding: 6px 0; }
.footer-grid a:hover { color: var(--blue); }

.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 0.8rem; color: var(--ink-faint);
  flex-wrap: wrap; gap: 12px;
}

/* ---------- Reveal on scroll ---------- */

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Distinct, slower, scale-based signature for hero elements only --
   deliberately different from the standard card/section treatment above,
   so the hero reads as a considered moment rather than "more of the same". */
.reveal-scale { opacity: 0; transform: scale(0.96); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal-scale.in { opacity: 1; transform: scale(1); }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-scale { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Skeleton loading states ---------- */

.skel {
  background: linear-gradient(90deg, var(--fog-2) 25%, #f9f9fa 37%, var(--fog-2) 63%);
  background-size: 400% 100%;
  animation: skel-shimmer 1.4s ease infinite;
  border-radius: 8px;
  display: block;
}
@keyframes skel-shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
@media (prefers-reduced-motion: reduce) { .skel { animation: none; background: var(--fog-2); } }

.skel-text { height: 0.9em; margin: 6px 0; }
.skel-row { height: 52px; border-radius: 12px; margin-bottom: 10px; }
.skel-title { height: 1.4em; width: 60%; margin-bottom: 10px; }
.skel-chart { height: 240px; border-radius: 16px; }

/* ---------- Patient Portal chrome ---------- */

.portal-topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 6vw;
  border-bottom: 1px solid var(--fog-2);
  position: sticky; top: 0; background: rgba(255,255,255,0.9);
  backdrop-filter: blur(16px);
  z-index: 100;
}
.portal-topbar-right { display: flex; align-items: center; gap: 16px; }
.portal-greeting { font-size: 0.9rem; color: var(--ink-soft); font-weight: 500; }

.portal-tabs {
  display: flex; gap: 4px;
  padding: 0 6vw;
  border-bottom: 1px solid var(--fog-2);
  overflow-x: auto;
}
.portal-tabs a {
  padding: 16px 18px; font-size: 0.88rem; font-weight: 600; color: var(--ink-faint);
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.portal-tabs a:hover { color: var(--ink); }
.portal-tabs a.active { color: var(--blue); border-bottom-color: var(--blue); }

.portal-shell { max-width: 1000px; margin: 0 auto; padding: 48px 6vw; }

.otp-step { display: none; }
.otp-step.active { display: block; }

.biomarker-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 0; border-bottom: 1px solid var(--fog-2);
}
.biomarker-row:last-child { border-bottom: none; }
.flag-pill { font-size: 0.72rem; font-weight: 700; padding: 4px 10px; border-radius: 980px; text-transform: uppercase; }
.flag-normal { background: var(--mint-tint); color: var(--mint); }
.flag-low, .flag-high { background: #fbeae4; color: var(--danger); }

.trend-chart { width: 100%; height: 240px; }

.danger-zone {
  border: 1px solid #f0d0c4; background: #fdf5f2; border-radius: var(--radius-md);
  padding: 24px; margin-top: 40px;
}
.danger-zone h3 { color: var(--danger); font-size: 1rem; }

.empty-state {
  text-align: center; padding: 56px 20px; color: var(--ink-faint);
}

.medical-disclaimer {
  background: #fdf5f2; border: 1px solid #f0d0c4; border-radius: var(--radius-sm);
  padding: 14px 18px; font-size: 0.84rem; color: var(--ink-soft); line-height: 1.5;
  display: flex; gap: 10px; align-items: flex-start;
}
.medical-disclaimer strong { color: var(--danger); white-space: nowrap; }

/* ---------- Breadcrumb / page hero (interior pages) ---------- */

.page-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--fog-2);
}
.breadcrumb { font-size: 0.82rem; color: var(--ink-faint); margin-bottom: 16px; }
.breadcrumb a { color: var(--ink-faint); }
.breadcrumb a:hover { color: var(--blue); }