/* ═══════════════════════════════════════════
   COOPER HEALTHCARE ASSOCIATES
   Style Sheet — Dark-first, teal accent
   ═══════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem + 0.25vw,  0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw,  1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw,   1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem + 1.25vw,  2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem + 2.5vw,   3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem + 4vw,       5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

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

  /* Content widths */
  --content-default: 1100px;
  --content-narrow: 720px;

  /* Fonts */
  --font-display: 'Outfit', 'Helvetica Neue', sans-serif;
  --font-body: 'Outfit', 'Inter', sans-serif;
}

/* ─── Color Palette — Dark (default) ─── */
:root,
[data-theme="dark"] {
  --color-bg:              #0b1219;
  --color-surface:         #0f1923;
  --color-surface-2:       #152030;
  --color-surface-offset:  #1a2840;
  --color-border:          #1e3048;
  --color-divider:         #172538;

  --color-text:            #e2e8f0;
  --color-text-muted:      #7a9ab5;
  --color-text-faint:      #3d5a75;
  --color-text-inverse:    #0b1219;

  --color-primary:         #4fb8c4;
  --color-primary-hover:   #38a8b5;
  --color-primary-active:  #2a8fa0;
  --color-primary-subtle:  rgba(79, 184, 196, 0.12);
  --color-primary-glow:    rgba(79, 184, 196, 0.25);

  --color-success:         #4ade80;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
}



/* ─── Base Reset ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s, color 0.3s;
}
img, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.1; font-family: var(--font-display); }
p { text-wrap: pretty; max-width: 68ch; }

::selection {
  background: var(--color-primary-subtle);
  color: var(--color-text);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ─── Layout Helpers ─── */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-12));
}
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.625rem 1.375rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  white-space: nowrap;
  border: 1.5px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}
.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);
  transform: translateY(-1px);
}
.btn-lg {
  font-size: var(--text-base);
  padding: 0.875rem 1.875rem;
}

/* ─── Header / Nav ─── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition), background var(--transition);
}
.header--scrolled {
  box-shadow: var(--shadow-md);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-8);
}
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-img {
  height: 32px;
  width: auto;
  object-fit: contain;
}
.logo-img--footer { height: 28px; }

/* Always show white logo */
.logo-color { display: none; }
.logo-white { display: block; }

.nav-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: var(--space-2);
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s cubic-bezier(0.16,1,0.3,1);
  border-top: 1px solid var(--color-border);
}
.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-5) var(--space-6);
}
.mobile-menu a {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-divider);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--color-primary); }
.mobile-menu .btn {
  margin-top: var(--space-4);
  justify-content: center;
  border-bottom: none;
}
.mobile-menu.is-open { max-height: 400px; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: block; }
}

/* ─── Hero ─── */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg);
}

/* Spotlight overlay */
.hero-spotlight {
  pointer-events: none;
  position: absolute;
  border-radius: 50%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at center,
    rgba(79, 184, 196, 0.13) 0%,
    rgba(79, 184, 196, 0.06) 40%,
    transparent 70%);
  transform: translate(-50%, -50%);
  transition: opacity 0.4s ease;
  opacity: 0;
  z-index: 1;
  top: 50%;
  left: 50%;
}

.hero:hover .hero-spotlight { opacity: 1; }

/* Shader background canvas */
#shader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Hero content centered over shader */
.hero-split {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 92vh;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-12));
}

.hero-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-8);
  padding-block: var(--space-20);
  max-width: 820px;
}

@media (max-width: 600px) {
  .hero-left { padding-block: var(--space-16); }
  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-sub {
    color: #c8dae8;
    text-shadow: 0 1px 16px rgba(0,0,0,1), 0 2px 6px rgba(0,0,0,1);
  }
}

.hero-headline {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--color-text);
  letter-spacing: -0.02em;
  max-width: 16ch;
  text-shadow: 0 2px 24px rgba(0,0,0,0.7), 0 1px 4px rgba(0,0,0,0.9);
}
.hero-headline .accent {
  color: var(--color-primary);
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
}
.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 58ch;
  line-height: 1.7;
  text-shadow: 0 1px 12px rgba(0,0,0,0.95), 0 2px 4px rgba(0,0,0,0.9);
}
.hero-ctas {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}
/* ─── Section Labels ─── */
.section-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.section-headline {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-12);
}

/* ─── Services ─── */
.services {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}
.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px var(--color-primary-glow);
}
.service-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  color: var(--color-primary);
  flex-shrink: 0;
}
.service-icon svg { width: 22px; height: 22px; }
.service-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 100%;
}

/* ─── Stats Bar ─── */
.stats-bar {
  background: var(--color-primary);
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-bg);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: color-mix(in srgb, var(--color-bg) 75%, transparent);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}


@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}

/* ─── About ─── */
.about { background: var(--color-bg); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: start;
}
.about-body {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  line-height: 1.7;
  font-size: var(--text-base);
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-subtle);
  border: 1px solid rgba(79,184,196,0.25);
  border-radius: var(--radius-full);
  color: var(--color-primary);
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.value-card {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition);
}
.value-card:hover { border-color: var(--color-primary); }
.value-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}
.value-icon svg { width: 20px; height: 20px; }
.value-card h4 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-1);
  color: var(--color-text);
}
.value-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 100%;
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ─── Results ─── */
.results {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.result-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
}
.result-card::before {
  content: '\201C';
  position: absolute;
  top: var(--space-5);
  left: var(--space-8);
  font-size: 4rem;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  opacity: 0.5;
}
.result-quote {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.75;
  padding-top: var(--space-8);
  max-width: 100%;
  font-style: italic;
}
.result-role {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}
.result-location {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ─── Book / CTA ─── */
.book { background: var(--color-bg); }
.book-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: start;
}
.book-inner--centered {
  grid-template-columns: 1fr;
  max-width: var(--content-narrow);
  margin-inline: auto;
  text-align: center;
}
.book-inner--centered .book-contact-links {
  justify-content: center;
}
.book-inner--centered .book-text p {
  margin-inline: auto;
}
.book-headline {
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}
.book-text p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}
.book-contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.contact-link:hover { color: var(--color-primary); }
.contact-link svg { width: 18px; height: 18px; flex-shrink: 0; }

/* Calendly embed wrapper */
.book-calendar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.calendly-inline-widget {
  border-radius: var(--radius-xl);
}

@media (max-width: 900px) {
  .book-inner {
    grid-template-columns: 1fr;
  }
  .book-calendar {
    min-height: 580px;
  }
}

/* ─── Footer ─── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-6);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  max-width: 100%;
}
.footer-nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--color-primary); }
.footer-social {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}
.footer-social a {
  color: var(--color-text-muted);
  transition: color var(--transition);
  display: flex;
}
.footer-social a:hover { color: var(--color-primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 100%;
}
.footer-bottom a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer-bottom a:hover { color: var(--color-primary); }

/* ─── Mobile Sticky CTA Bar ─── */
.mobile-cta-bar {
  display: none; /* hidden on desktop */
}

@media (max-width: 768px) {
  .mobile-cta-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: color-mix(in srgb, var(--color-surface) 92%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--color-border);
    padding-bottom: env(safe-area-inset-bottom); /* iPhone home bar */
  }

  .mobile-cta-link {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 12px 8px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color var(--transition), background var(--transition);
    text-decoration: none;
  }

  .mobile-cta-link:active {
    background: var(--color-primary-subtle);
    color: var(--color-primary);
  }

  .mobile-cta-link svg {
    width: 22px;
    height: 22px;
    color: var(--color-primary);
  }

  .mobile-cta-divider {
    width: 1px;
    background: var(--color-border);
    margin-block: 10px;
  }

  /* Push footer up so it's not hidden behind the bar */
  .footer {
    padding-bottom: calc(var(--space-8) + 72px);
  }
}

/* ─── Scroll-Reveal Animations ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16,1,0.3,1), transform 0.6s cubic-bezier(0.16,1,0.3,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }