/* ==========================================================================
   Dayville Management Group — Stylesheet
   Design system: black/charcoal + white/off-white + cool gray/silver
   with restrained purple accents.
   ========================================================================== */

:root {
  /* Colors */
  --color-bg: #0D0F14;
  --color-bg-alt: #111318;
  --color-surface: #181B22;
  --color-surface-2: #1E222B;
  --color-white: #FFFFFF;
  --color-off-white: #F7F8FA;
  --color-cool-gray: #EEF1F4;
  --color-silver: #C7CDD4;
  --color-medium-gray: #7A828C;
  --color-border: #2A2F3A;
  --color-purple: #6C3BFF;
  --color-purple-alt: #7145FF;
  --color-purple-tint: #EEE9FF;
  --color-purple-glow: rgba(108, 59, 255, 0.35);

  /* Type */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout */
  --container-max: 1240px;
  --header-height: 84px;
  --header-height-scrolled: 68px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 220ms;
  --duration-base: 500ms;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

body {
  background: var(--color-bg);
  color: var(--color-off-white);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-purple);
  color: #fff;
  padding: 12px 20px;
  z-index: 999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--color-purple);
  outline-offset: 3px;
}

.text-accent { color: var(--color-purple-alt); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  min-height: 48px;
  transition: transform var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-purple), var(--color-purple-alt));
  color: #fff;
  box-shadow: 0 8px 24px -8px var(--color-purple-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -6px var(--color-purple-glow); }
.btn-secondary {
  background: transparent;
  color: var(--color-off-white);
  border-color: var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-silver); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn-nav { margin-left: 16px; }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 20, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--ease), height var(--duration-fast) var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 8px 24px -12px rgba(0,0,0,0.6);
}

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-height);
  transition: height var(--duration-fast) var(--ease);
}
.site-header.scrolled .header-inner { height: var(--header-height-scrolled); }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-purple-alt);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.brand-name {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-silver);
  white-space: nowrap;
}

.nav-desktop { margin-left: 40px; }
.nav-list { display: flex; gap: 32px; }
.nav-link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-silver);
  padding: 6px 0;
  transition: color var(--duration-fast) var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--color-purple-alt);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease);
}
.nav-link:hover { color: var(--color-white); }
.nav-link.active { color: var(--color-white); }
.nav-link.active::after { transform: scaleX(1); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-left: 12px;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-off-white);
  margin: 0 auto;
  transition: transform var(--duration-fast) var(--ease), opacity var(--duration-fast) var(--ease);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-base) var(--ease);
}
.mobile-menu.open { max-height: 480px; }
.mobile-menu ul { padding: 8px 24px 24px; }
.mobile-link {
  display: block;
  padding: 14px 4px;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-off-white);
  border-bottom: 1px solid var(--color-border);
  min-height: 44px;
}
.mobile-cta { margin-top: 16px; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero { position: relative; padding: 88px 0 64px; overflow: hidden; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-purple-alt);
  margin-bottom: 16px;
}
.hero-headline {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--color-white);
  margin-bottom: 22px;
}
.hero-body {
  font-size: 1.08rem;
  color: var(--color-silver);
  max-width: 46ch;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-graphic { width: 100%; height: auto; }

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: fit-content;
  margin: 56px auto 0;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-medium-gray);
}
.scroll-indicator svg { animation: bounce 2.2s ease-in-out infinite; }
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ==========================================================================
   QUICK CAPABILITY STRIP
   ========================================================================== */
.strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}
.strip-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}
.strip-item {
  padding: 28px 20px;
  border-right: 1px solid var(--color-border);
}
.strip-item:last-child { border-right: none; }
.strip-item h3 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}
.strip-item p { font-size: 0.82rem; color: var(--color-medium-gray); }

/* ==========================================================================
   SECTIONS (shared)
   ========================================================================== */
.section { padding: 96px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
}
.section-body {
  color: var(--color-silver);
  font-size: 1.02rem;
  margin-bottom: 18px;
}
.section-body:last-child { margin-bottom: 0; }
.legal-note, .footer-legal { color: var(--color-medium-gray); font-size: 0.78rem; margin-top: 18px; }
.capability-group { color: var(--color-white); font-size: 1.15rem; margin: 50px 0 20px; }
.capability-group:first-of-type { margin-top: 0; }
.capability-compact .card { min-height: 190px; }
.brand-name small { display: block; font-size: 0.58em; letter-spacing: 0.13em; color: var(--color-silver); }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-intro { color: var(--color-silver); font-size: 1.02rem; margin-top: 16px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag-list li {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-purple-alt);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 8px 14px;
  border-radius: 999px;
}

/* ---- Capability / Teaming cards ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-purple);
  background: var(--color-surface-2);
}
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--color-purple-tint);
  color: var(--color-purple);
  margin-bottom: 20px;
  transition: transform var(--duration-fast) var(--ease);
}
.card:hover .card-icon { transform: translateX(2px) translateY(-2px); }
.card h3 { font-size: 1.08rem; font-weight: 700; color: var(--color-white); margin-bottom: 10px; }
.card p { font-size: 0.92rem; color: var(--color-medium-gray); }
.card-arrow {
  position: absolute;
  top: 32px; right: 28px;
  color: var(--color-purple-alt);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);
}
.card:hover .card-arrow { opacity: 1; transform: translateX(0); }

/* ---- Experience ---- */
.label-tag {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-purple-alt);
  margin-bottom: 18px;
}
.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 16px;
  color: var(--color-silver);
  font-size: 0.98rem;
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 7px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--color-purple);
}
.check-list li:last-child { margin-bottom: 0; }

.indicator-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}
.indicator-row span {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-medium-gray);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 999px;
}

/* ---- Teaming ---- */
.teaming-note {
  margin-top: 40px;
  padding: 28px 32px;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-purple);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  color: var(--color-silver);
  font-size: 1rem;
  max-width: 900px;
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.contact-info h3 { font-size: 1.3rem; font-weight: 700; color: var(--color-white); }
.contact-role { color: var(--color-medium-gray); margin: 8px 0 32px; font-size: 0.94rem; }

.contact-details { margin-bottom: 32px; }
.contact-details li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}
.contact-details li:first-child { padding-top: 0; }
.contact-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-medium-gray);
}
.contact-details a { color: var(--color-off-white); font-weight: 500; transition: color var(--duration-fast) var(--ease); }
.contact-details a:hover { color: var(--color-purple-alt); }

.mobile-contact-actions { display: none; gap: 12px; margin-bottom: 20px; }

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-row { margin-bottom: 20px; }
.form-row-split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 0; }
.form-row-split > div { margin-bottom: 20px; }
.form-row label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-off-white);
  margin-bottom: 8px;
}
.form-row .optional { color: var(--color-medium-gray); font-weight: 400; }
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--color-off-white);
  min-height: 48px;
  transition: border-color var(--duration-fast) var(--ease);
}
.form-row textarea { min-height: 120px; resize: vertical; }
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus { border-color: var(--color-purple); }
.form-row input.invalid,
.form-row textarea.invalid { border-color: #E0554F; }
.form-error {
  display: block;
  min-height: 18px;
  font-size: 0.8rem;
  color: #E0554F;
  margin-top: 6px;
}
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-silver);
  min-height: 20px;
}
.form-status.success { color: #4ADE80; }
.form-status.error { color: #E0554F; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-name { font-weight: 700; color: var(--color-white); margin-top: 14px; }
.footer-tagline { color: var(--color-medium-gray); font-size: 0.9rem; margin-top: 6px; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--color-silver); font-size: 0.94rem; transition: color var(--duration-fast) var(--ease); }
.footer-links a:hover { color: var(--color-purple-alt); }
.footer-contact p { color: var(--color-silver); font-size: 0.94rem; margin-bottom: 12px; }
.footer-contact a:hover { color: var(--color-purple-alt); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  color: var(--color-medium-gray);
  font-size: 0.82rem;
}

/* ==========================================================================
   SCROLL REVEAL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--duration-base) var(--ease), transform var(--duration-base) var(--ease);
}
.reveal-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-indicator svg { animation: none; }
  .btn, .card, .hamburger span, .nav-link::after, .mobile-menu { transition: none; }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .strip-grid { grid-template-columns: repeat(3, 1fr); }
  .strip-item:nth-child(3) { border-right: none; }
  .strip-item { border-bottom: 1px solid var(--color-border); }
  .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav-desktop, .btn-nav { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 360px; margin: 0 auto; }
  .section-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .mobile-contact-actions { display: flex; }
}

@media (max-width: 768px) {
  .brand-name { display: none; }
  .hero { padding: 48px 0 40px; }
  .hero-headline { font-size: clamp(2rem, 7vw, 2.6rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .strip-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-item:nth-child(2n) { border-right: none; }
  .section { padding: 64px 0; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row-split { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero-headline { font-size: 2rem; }
  .contact-form { padding: 24px; }
  .teaming-note { padding: 22px; }
}