/*
  Quorum Research Partners
  Bold modern: deep blue + warm rust accent on warm off-white
*/

:root {
  /* Color palette — bold modern, deep blue + warm accent */
  --color-bg: #FAF7F2;           /* warm off-white background */
  --color-bg-alt: #FFFFFF;       /* pure white for cards */
  --color-bg-dark: #0E1F3A;      /* deep navy for inverted sections */
  --color-ink: #0E1F3A;          /* deep navy text */
  --color-ink-muted: #5A6478;    /* secondary text */
  --color-accent: #B85C2E;       /* warm rust accent */
  --color-accent-light: #E6A77A; /* lighter rust for hover/subtle */
  --color-border: #E8E2D6;       /* warm border tone */
  --color-border-dark: #1F3454;  /* navy border */

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Layout */
  --container-max: 1180px;
  --radius: 6px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ============ HEADER ============ */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 700;
}

.logo-mark {
  font-size: 1.6rem;
  color: var(--color-accent);
  line-height: 1;
}

.logo-text {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

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

.site-nav a {
  text-decoration: none;
  color: var(--color-ink);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}

.site-nav a:hover {
  color: var(--color-accent);
}

.nav-cta {
  background: var(--color-ink);
  color: var(--color-bg) !important;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.nav-cta:hover {
  background: var(--color-accent) !important;
  color: white !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
}

/* ============ HERO ============ */

.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero-headline {
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  max-width: 880px;
}

.hero-headline .accent {
  color: var(--color-accent);
  font-style: italic;
  font-family: var(--font-serif);
  font-weight: 500;
}

.hero-sub {
  font-size: 1.25rem;
  color: var(--color-ink-muted);
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.btn {
  display: inline-block;
  padding: 0.95rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background: var(--color-ink);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.btn-ghost:hover {
  background: var(--color-ink);
  color: var(--color-bg);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
}

.proof-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  line-height: 1;
}

.proof-unit {
  font-size: 1.4rem;
  color: var(--color-accent);
  margin-left: 0.15em;
}

.proof-label {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  margin-top: 0.5rem;
  max-width: 280px;
}

/* ============ SECTION COMMON ============ */

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  max-width: 800px;
}

.section-lede {
  font-size: 1.15rem;
  color: var(--color-ink-muted);
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

/* ============ PROBLEM SECTION ============ */

.problem {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.problem-card {
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.problem-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-ink);
}

.problem-card p {
  color: var(--color-ink-muted);
}

/* ============ SERVICES ============ */

.services {
  padding: var(--space-2xl) 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.service-card {
  padding: var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(14, 31, 58, 0.06);
}

.service-card-featured {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

.service-card-featured h3,
.service-card-featured .service-meta {
  color: var(--color-bg);
}

.service-card-featured .service-tag {
  background: var(--color-accent);
  color: white;
}

.service-card-featured p,
.service-card-featured .service-list {
  color: rgba(250, 247, 242, 0.85);
}

.service-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.7rem;
  background: var(--color-border);
  color: var(--color-ink);
  border-radius: var(--radius);
  align-self: flex-start;
  margin-bottom: var(--space-sm);
}

.service-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
}

.service-meta {
  font-size: 0.95rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.service-card p {
  color: var(--color-ink-muted);
  margin-bottom: var(--space-md);
}

.service-list {
  list-style: none;
  padding: 0;
  margin-top: auto;
}

.service-list li {
  padding-left: 1.4rem;
  position: relative;
  font-size: 0.95rem;
  color: var(--color-ink-muted);
  margin-bottom: 0.5rem;
}

.service-list li:before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* ============ APPROACH ============ */

.approach {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.approach-item {
  padding: var(--space-md);
}

.approach-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-style: italic;
}

.approach-item h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.approach-item p {
  color: var(--color-ink-muted);
  font-size: 0.97rem;
}

/* ============ POSITIONING QUOTE ============ */

.positioning {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-dark);
  color: var(--color-bg);
}

.big-quote {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.big-quote p {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.4;
  font-weight: 400;
  font-style: italic;
  color: var(--color-bg);
}

/* ============ ABOUT ============ */

.about {
  padding: var(--space-2xl) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-content .eyebrow {
  margin-bottom: var(--space-sm);
}

.about-lede {
  font-size: 1.15rem;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-md);
}

.about-content p {
  color: var(--color-ink-muted);
}

.about-headshot {
  position: sticky;
  top: 100px;
}

.headshot-placeholder {
  width: 100%;
  aspect-ratio: 1 / 1.2;
  background: linear-gradient(135deg, var(--color-border), var(--color-bg-alt));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-muted);
  font-style: italic;
  border: 1px dashed var(--color-border);
}

.headshot-img {
  width: 100%;
  aspect-ratio: 1 / 1.2;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: 0 12px 40px rgba(14, 31, 58, 0.15);
}

/* ============ CONTACT ============ */

.contact {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.contact-lede {
  font-size: 1.15rem;
  color: var(--color-ink-muted);
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  max-width: 760px;
}

.contact-card {
  display: block;
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-ink);
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(184, 92, 46, 0.1);
}

.contact-icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.contact-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.contact-card p {
  color: var(--color-ink-muted);
  font-size: 1rem;
}

.contact-note {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-accent);
  font-style: italic;
}

/* ============ FOOTER ============ */

.site-footer {
  padding: var(--space-lg) 0;
  background: var(--color-bg-dark);
  color: var(--color-bg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
}

.footer-brand .logo-mark {
  color: var(--color-accent);
}

.footer-meta {
  text-align: right;
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-tagline {
  font-style: italic;
  margin-top: 0.3rem;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* ============ RESPONSIVE ============ */

@media (max-width: 900px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    gap: 0.75rem;
  }

  .site-nav.open {
    display: flex;
  }

  .nav-cta {
    align-self: flex-start;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .problem-grid,
  .services-grid,
  .approach-grid,
  .contact-options {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-headshot {
    position: static;
    max-width: 360px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-meta {
    text-align: center;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: var(--space-xl) 0;
  }

  .hero-cta-row {
    flex-direction: column;
  }

  .btn {
    text-align: center;
  }
}