/* QuickField.ai Landing — The perfect analog for any greenfield */

:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --bg-card: #21262d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --accent-soft: rgba(88, 166, 255, 0.15);
  --success: #3fb950;
  --border: #30363d;
  --radius: 12px;
  --radius-sm: 8px;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo-ai {
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a:not(.btn) {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.nav a:not(.btn):hover {
  color: var(--text);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-image: linear-gradient(180deg, var(--accent-hover) 0%, var(--accent) 100%);
  color: #fff;
}

.btn-primary:hover {
  background-image: linear-gradient(180deg, #7fd0ff 0%, var(--accent-hover) 100%);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

/* Hero */
.hero {
  position: relative;
  padding: 120px 0 100px;
  overflow: hidden;
  isolation: isolate;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: 40px;
}

.hero-copy {
  min-width: 0;
}

.hero-tagline {
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.hero-title {
  margin: 0 0 24px;
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-title .accent {
  color: var(--accent);
}

.hero-subtitle {
  margin: 0 0 40px;
  max-width: 600px;
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-media {
  min-width: 0;
}

.hero-image {
  display: block;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(88, 166, 255, 0.28);
  box-shadow: 0 0 0 1px rgba(13, 17, 23, 0.7) inset;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-soft), transparent),
    linear-gradient(180deg, transparent 60%, var(--bg) 100%);
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

/* Mid-size screens: allow header wrapping */
@media (max-width: 1100px) {
  .header-inner {
    height: auto;
    padding: 12px 0;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 14px;
    row-gap: 10px;
  }
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-title {
  margin: 0 0 48px;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* What is QuickField */
.what {
  background: var(--bg-elevated);
}

.what-content .lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text);
  margin: 0 0 20px;
}

.what-content p {
  margin: 0;
  color: var(--text-muted);
  max-width: 720px;
}

.section-intro {
  margin: -32px 0 40px;
  color: var(--text-muted);
}

/* How it works */
.how-tabs {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(0, 1.25fr);
  gap: 28px;
  align-items: start;
}

.how-tabs-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.how-tab {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  text-align: left;
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition);
}

.how-tab:hover {
  border-color: var(--accent);
}

.how-tab.is-active {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(88, 166, 255, 0.16) 0%, rgba(88, 166, 255, 0.06) 100%);
}

.how-tab-title {
  font-size: 1rem;
  font-weight: 600;
}

.step-num {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.125rem;
  border-radius: var(--radius-sm);
}

.how-panels {
  min-width: 0;
}

.how-panel {
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.how-panel-heading {
  display: none;
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.how-panel-image {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(88, 166, 255, 0.2);
  margin-bottom: 14px;
}

.how-panel-text {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Who benefits */
.benefits {
  background: var(--bg-elevated);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.benefit-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.benefit-card h3 {
  margin: 0 0 12px;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--accent);
}

.benefit-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Under the hood */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.tech-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.tech-card h3 {
  margin: 0 0 12px;
  font-size: 1.125rem;
  font-weight: 600;
}

.tech-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.principles {
  padding: 24px;
  background: var(--accent-soft);
  border-radius: var(--radius);
  border-left: 4px solid var(--accent);
}

.principles p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* What you get */
.what-you-get {
  background: var(--bg-elevated);
}

.what-you-get-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.what-you-get-item {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.what-you-get-item h3 {
  margin: 0 0 12px;
  font-size: 1.125rem;
  font-weight: 600;
}

.what-you-get-item p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.what-you-get-cta {
  margin: 0 0 16px;
  color: var(--text-muted);
  max-width: 720px;
}

.what-you-get-highlight {
  margin: 0;
  font-size: 1.125rem;
  color: var(--text);
}

.what-you-get-highlight strong {
  color: var(--accent);
}

/* Next step */
.next-step p {
  margin: 0;
  color: var(--text-muted);
  max-width: 720px;
}

/* Contact */
.contact {
  background: var(--bg-elevated);
}

.advisory {
  background: var(--bg-elevated);
}

.advisory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.member-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.member-avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background-image:
    radial-gradient(ellipse at top left, rgba(88, 166, 255, 0.35), transparent 55%),
    linear-gradient(180deg, rgba(88, 166, 255, 0.18), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(88, 166, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.member-avatar span {
  font-size: 1rem;
}

.member-card h3 {
  margin: 0 0 10px;
  font-size: 1.125rem;
  font-weight: 600;
}

.member-bio {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.contact-content {
  max-width: 480px;
}

.contact-content p {
  margin: 0 0 12px;
  color: var(--text-muted);
}

.contact-content p strong {
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--text);
}

.contact-email {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  margin: 8px 0 12px;
}

.contact-email:hover {
  text-decoration: underline;
}

.contact-phone {
  display: inline-block;
  color: var(--accent);
  text-decoration: none;
  font-size: 1.125rem;
}

.contact-phone:hover {
  text-decoration: underline;
}

.contact-social {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(139, 148, 158, 0.28);
}

.contact-social-title {
  margin: 0 0 10px;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.contact-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.contact-linkedin:hover {
  text-decoration: underline;
}

.contact-linkedin svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* CTA */
.cta {
  padding: 80px 0;
  text-align: center;
}

.cta-tagline {
  margin: 0 0 24px;
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.cta .btn {
  margin-top: 8px;
}

/* Footer */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Mobile */
@media (max-width: 768px) {
  .logo {
    margin-left: 8px;
  }

  .nav {
    position: fixed;
    top: var(--header-h, 64px);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 24px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 80px 0 60px;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-image {
    max-width: 100%;
    margin-left: 0;
  }

  .section {
    padding: 60px 0;
  }

  .benefits-grid,
  .tech-grid {
    grid-template-columns: 1fr;
  }

  .how-tabs {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .how-tabs-list {
    display: none;
  }

  .how-panels {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  /* Mobile fallback: show all panels even if hidden attr remains */
  .how-panel[hidden] {
    display: block;
  }

  .how-panel {
    padding: 14px;
  }

  .how-panel-heading {
    display: block;
  }

  .how-panel-image {
    max-height: 260px;
  }
}

/* If nav links wrap into 2+ rows (even on wider screens) */
body.nav-wrap .menu-toggle {
  display: flex;
}

body.nav-wrap .nav {
  position: fixed;
  top: var(--header-h, 64px);
  left: 0;
  right: 0;
  flex-direction: column;
  padding: 24px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  gap: 20px;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

body.nav-wrap .nav.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}