/* ============================================================
   IntegriClinical, L.L.C. — Clinical Operations Consulting
   Corporate, minimal. Clinical teal + warm off-white.
   ============================================================ */

:root,
[data-theme='light'] {
  /* Surfaces */
  --color-bg: #f7f8f9;
  --color-surface: #ffffff;
  --color-surface-2: #fbfcfd;
  --color-surface-offset: #eef2f4;
  --color-divider: #e2e8ec;
  --color-border: #d4dce0;

  /* Text */
  --color-text: #15262b;
  --color-text-muted: #5b6b71;
  --color-text-faint: #93a3a8;
  --color-text-inverse: #f7f8f9;

  /* Primary — Clinical Teal */
  --color-primary: #0e5a6b;
  --color-primary-hover: #0b4757;
  --color-primary-active: #093946;
  --color-primary-soft: #e3f0f2;

  /* Accent tones */
  --color-success: #1f7a4d;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(21, 38, 43, 0.06);
  --shadow-md: 0 6px 20px rgba(21, 38, 43, 0.08);
  --shadow-lg: 0 18px 44px rgba(21, 38, 43, 0.12);

  --content-narrow: 680px;
  --content-default: 1080px;
  --content-wide: 1200px;

  --font-display: 'General Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #0e1518;
  --color-surface: #141d21;
  --color-surface-2: #182225;
  --color-surface-offset: #1c272b;
  --color-divider: #232f33;
  --color-border: #2d3a3f;

  --color-text: #d6dee0;
  --color-text-muted: #8a989c;
  --color-text-faint: #5c6a6e;
  --color-text-inverse: #0e1518;

  --color-primary: #5fb3c2;
  --color-primary-hover: #79c4d2;
  --color-primary-active: #8fcdd8;
  --color-primary-soft: #18302f;

  --color-success: #5fbf86;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.5);
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

ul[role='list'], ol[role='list'] { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p, li { text-wrap: pretty; max-width: 72ch; }

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: color-mix(in oklab, var(--color-primary) 22%, transparent);
  color: var(--color-text);
}

button { cursor: pointer; font: inherit; color: inherit; background: none; border: none; }

input, textarea, select {
  font: inherit;
  color: inherit;
  width: 100%;
}

.sr-only, .skip-link {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.skip-link:focus {
  position: fixed;
  top: 0.5rem; left: 0.5rem;
  width: auto; height: auto;
  padding: 0.5rem 1rem;
  clip: auto;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  z-index: 100;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.container.narrow { max-width: var(--content-narrow); }

.section {
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

/* ---------- Type scale (tokens) ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.3vw, 1rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --text-lg: clamp(1.15rem, 1rem + 0.7vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.25rem + 1.1vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.6vw, 3.25rem);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-align: center;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-sm { padding: 0.6rem 1rem; }
.btn-lg { padding: 0.95rem 1.75rem; font-size: var(--text-base); }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in oklab, var(--color-bg) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--color-text); }
.logo { color: var(--color-primary); display: inline-flex; }
.brand-suffix { color: var(--color-text-muted); font-weight: 500; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-list a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}
.nav-list a:hover { color: var(--color-text); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.theme-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.mobile-nav {
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
  padding: 0.5rem 1.5rem 1rem;
}
.mobile-nav ul { display: flex; flex-direction: column; gap: 0.25rem; }
.mobile-nav a {
  display: block;
  padding: 0.75rem 0.5rem;
  color: var(--color-text);
  font-weight: 500;
  border-radius: var(--radius-sm);
}
.mobile-nav a:hover { background: var(--color-surface-offset); color: var(--color-primary); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-divider);
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left center;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, color-mix(in oklab, var(--color-bg) 78%, transparent) 0%, color-mix(in oklab, var(--color-bg) 55%, transparent) 45%, color-mix(in oklab, var(--color-bg) 92%, transparent) 100%);
  z-index: 1;
}
[data-theme='dark'] .hero::after {
  background: linear-gradient(90deg, color-mix(in oklab, var(--color-bg) 80%, transparent) 0%, color-mix(in oklab, var(--color-bg) 60%, transparent) 45%, color-mix(in oklab, var(--color-bg) 92%, transparent) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-block: clamp(4.5rem, 11vw, 8rem);
  max-width: 760px;
}
.eyebrow, .section-kicker {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.hero h1 {
  font-size: var(--text-2xl);
  margin-top: 1rem;
  max-width: 16ch;
}
.hero .lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-top: 1.25rem;
  max-width: 52ch;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-divider);
}
.hero-stats dt {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.hero-stats dd {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* ---------- Section heads ---------- */
.section-head { max-width: 60ch; margin-bottom: 3rem; }
.section-head h2, .section-intro h2, .about-body h2, .contact-info h2, .pay-card h2 {
  font-size: var(--text-xl);
  margin-top: 1rem;
}
.section-head p { color: var(--color-text-muted); margin-top: 1rem; }
.section-intro p { color: var(--color-text-muted); margin-top: 1.25rem; }
.section-intro p + p { margin-top: 1rem; }

/* ---------- Service cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: var(--color-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}
.card h3 { font-size: var(--text-lg); }
.card p { color: var(--color-text-muted); margin-top: 0.5rem; font-size: var(--text-sm); }

.engagement-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
}
.engagement-note h3 { font-size: var(--text-lg); }
.engagement-note p { color: var(--color-text-muted); margin-top: 0.4rem; }

/* ---------- About ---------- */
.section-about { background: var(--color-surface); border-block: 1px solid var(--color-divider); }
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
  align-items: center;
}
.about-media img {
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
}
.about-body p { color: var(--color-text-muted); margin-top: 1.25rem; }
.about-body p + p { margin-top: 1rem; }
.check-list { margin-top: 1.75rem; display: flex; flex-direction: column; gap: 0.6rem; }
.check-list li {
  position: relative;
  padding-left: 1.9rem;
  color: var(--color-text);
  font-size: var(--text-sm);
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 1.1rem;
  height: 1.1rem;
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230e5a6b' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center / 0.75rem no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230e5a6b' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center / 0.75rem no-repeat;
}

/* ---------- Pay invoice ---------- */
.section-pay { background: var(--color-bg); }
.pay-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(2.5rem, 5vw, 4rem);
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.pay-lead { color: var(--color-text-muted); margin-top: 1rem; }
.pay-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--color-primary) 50%, transparent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--color-primary) 45%, transparent); }
  70% { box-shadow: 0 0 0 6px color-mix(in oklab, var(--color-primary) 0%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--color-primary) 0%, transparent); }
}
.pay-button-disabled {
  opacity: 0.7;
  cursor: not-allowed;
}
.pay-button-disabled:hover {
  background: var(--color-primary);
  box-shadow: none;
}
.pay-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
  text-align: left;
  max-width: 30rem;
  margin-inline: auto;
}
.pay-steps li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-divider);
}
.step-num {
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
}
.pay-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 1.25rem;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}
.contact-info p { color: var(--color-text-muted); margin-top: 1rem; }
.contact-details { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.5rem; }
.contact-details li { border-top: 1px solid var(--color-divider); padding-top: 1.25rem; }
.detail-label {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.4rem;
}
.contact-details a { font-size: var(--text-lg); font-weight: 500; }
address { font-style: normal; color: var(--color-text-muted); line-height: 1.6; }

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.field input, .field textarea {
  padding: 0.7rem 0.85rem;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent);
}
.field input:invalid:not(:placeholder-shown) { border-color: var(--color-border); }
.form-status {
  font-size: var(--text-sm);
  min-height: 1.25rem;
}
.form-status.success { color: var(--color-success); font-weight: 600; }
.form-status.error { color: var(--color-error, #c0392b); font-weight: 600; }
.form-hint { font-size: var(--text-xs); color: var(--color-text-faint); text-align: center; }

/* ---------- Footer ---------- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: 2.5rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text);
}
.logo-sm { color: var(--color-primary); }
.footer-nav ul { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-nav a { color: var(--color-text-muted); font-size: var(--text-sm); }
.footer-nav a:hover { color: var(--color-text); }
.footer-legal { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav { display: none; }
  .header-actions .btn-primary { display: none; }
  .nav-toggle { display: inline-flex; }

  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-media { order: 2; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 620px) {
  .card-grid { grid-template-columns: 1fr; }
  .engagement-note { flex-direction: column; align-items: flex-start; text-align: left; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .hero-stats { gap: 1.5rem; }
}