/* ServeFlow Automation — draft concept styles
   Palette: primary #1F2937, accent #3B82F6, background #FFFFFF, text #111827 */

:root {
  --primary: #1F2937;
  --accent: #3B82F6;
  --bg: #FFFFFF;
  --text: #111827;
  --muted-bg: #F5F7FA;
  --muted-text: #4B5563;
  --border: #E5E7EB;
  --accent-dark: #2563EB;
  --radius: 12px;
  --wrap: 1120px;
  --focus: #1D4ED8;
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 10px 30px rgba(17, 24, 39, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Focus visibility */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

a {
  color: var(--accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 200;
  background: var(--primary);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  text-decoration: none;
}

/* Draft banner */
.draft-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  background: #FEF3C7;
  border-bottom: 1px solid #FCD34D;
  color: #78350F;
  padding: 0.7rem 1.5rem;
}

.draft-banner__dot {
  flex: none;
  width: 0.7rem;
  height: 0.7rem;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: #D97706;
}

.draft-banner__text {
  margin: 0;
  font-size: 0.9rem;
  max-width: var(--wrap);
}

/* Header + nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.05rem;
}

.brand:hover {
  text-decoration: none;
}

.brand__mark {
  display: inline-flex;
  line-height: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__list a {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.98rem;
}

.nav__cta {
  background: var(--accent);
  color: #fff !important;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.nav__cta:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Eyebrow + section headings */
.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent-dark);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section {
  padding: 4.5rem 0;
}

.section--muted {
  background: var(--muted-bg);
}

.section__title {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--primary);
  line-height: 1.2;
}

.section__intro {
  margin: 0 0 2rem;
  max-width: 60ch;
  color: var(--muted-text);
}

/* Hero */
.hero {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(59, 130, 246, 0.12), transparent 60%),
    linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--border);
}

.hero__inner {
  max-width: 820px;
}

.hero__title {
  margin: 0 0 1rem;
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.hero__lede {
  margin: 0 0 2rem;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--muted-text);
  max-width: 60ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid transparent;
  transition: background 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--ghost {
  background: #fff;
  color: var(--primary);
  border-color: var(--border);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

/* About */
.about__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.about__lead {
  margin: 0;
  font-size: 1.15rem;
  color: var(--text);
}

.about__body {
  margin: 0;
  color: var(--muted-text);
}

/* Cards */
.cards {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(3, 1fr);
  list-style: none;
  margin: 0;
  padding: 0;
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #C7D2FE;
}

.card__tag {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: #EFF6FF;
  border: 1px solid #DBEAFE;
  border-radius: 999px;
}

.card__title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--primary);
}

.card__body {
  margin: 0;
  color: var(--muted-text);
  font-size: 0.96rem;
}

/* Contact */
.section--contact {
  background: var(--primary);
  color: #fff;
}

.section--contact .eyebrow {
  color: #93C5FD;
}

.section--contact .section__title {
  color: #fff;
}

.contact__inner {
  max-width: 720px;
}

.contact__body {
  margin: 0 0 1.25rem;
  color: #E5E7EB;
  font-size: 1.1rem;
}

.contact__note {
  margin: 0;
  display: inline-block;
  padding: 0.6rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(147, 197, 253, 0.4);
  border-radius: var(--radius);
  color: #DBEAFE;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 2.5rem 0;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  align-items: baseline;
  justify-content: space-between;
}

.site-footer__brand {
  margin: 0;
  font-weight: 700;
  color: #fff;
}

.site-footer__note {
  margin: 0;
  font-size: 0.88rem;
  max-width: 60ch;
}

/* Responsive */
@media (max-width: 820px) {
  .about__grid {
    grid-template-columns: 1fr;
  }

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

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    clip-path: inset(0 0 100% 0);
    visibility: hidden;
    transition: clip-path 0.25s ease, visibility 0.25s ease;
  }

  .nav.is-open {
    clip-path: inset(0 0 0 0);
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.5rem 1.25rem;
  }

  .nav__list li {
    border-bottom: 1px solid var(--border);
  }

  .nav__list li:last-child {
    border-bottom: none;
    margin-top: 0.75rem;
  }

  .nav__list a {
    display: block;
    padding: 0.85rem 0;
  }

  .nav__cta {
    text-align: center;
    padding: 0.75rem 1rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}