/* DDAI Enterprises, LLC — corporate site
   Design system v3: premium dark product studio.
   Deep navy-charcoal base · panel surfaces with subtle depth · cobalt signal accent.
   Single stylesheet. No JavaScript anywhere on the site. */

:root {
  --bg: #0b0e14;
  --panel: #121724;
  --panel-deep: #0d1018;
  --border: rgba(148, 163, 197, 0.14);
  --border-strong: rgba(148, 163, 197, 0.24);
  --text: #f2f4f8;
  --text-soft: #c3c9d6;
  --muted: #8b93a7;
  --cobalt: #3e63f2;
  --cobalt-bright: #5b7dff;
  --accent-text: #7d97ff;
  --max: 1120px;
  --gutter: 1.5rem;
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
    "Liberation Mono", monospace;
}

/* ---------- base ---------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(1100px 560px at 72% -8%, rgba(62, 99, 242, 0.17), transparent 62%),
    radial-gradient(900px 520px at -12% 28%, rgba(109, 94, 245, 0.07), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p {
  margin: 0;
}

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

a:hover {
  color: var(--cobalt-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--cobalt-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(62, 99, 242, 0.4);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.mono {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* shared panel surface */
.panel {
  background:
    linear-gradient(180deg, rgba(148, 163, 197, 0.06), rgba(148, 163, 197, 0.015) 40%),
    var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 24px 48px -32px rgba(0, 0, 0, 0.55);
}

/* ---------- skip link ---------- */

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  transition: top 150ms ease;
}

.skip-link:focus {
  top: 1rem;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 20, 0.8);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  white-space: nowrap;
}

.wordmark img {
  height: 2rem;
  width: auto;
  display: block;
}

.wordmark strong {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.wordmark span {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
}

.wordmark:hover {
  color: var(--text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 1.75rem);
}

.site-nav a {
  color: var(--text-soft);
  font-size: 0.9375rem;
}

.site-nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.site-nav .nav-cta {
  padding: 0.45rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text);
  transition: border-color 150ms ease, background-color 150ms ease;
}

.site-nav .nav-cta:hover {
  border-color: var(--cobalt);
  background: rgba(62, 99, 242, 0.12);
}

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  background: linear-gradient(180deg, var(--cobalt-bright), var(--cobalt));
  color: #ffffff;
  border: 1px solid rgba(91, 125, 255, 0.6);
  box-shadow:
    0 8px 24px -8px rgba(62, 99, 242, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
  transition: filter 150ms ease, transform 150ms ease;
}

.btn:hover {
  filter: brightness(1.1);
  color: #ffffff;
  text-decoration: none;
}

.btn-ghost {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  border: 1px solid var(--border-strong);
  background: rgba(148, 163, 197, 0.05);
  transition: border-color 150ms ease, background-color 150ms ease;
}

.btn-ghost:hover {
  border-color: var(--cobalt);
  background: rgba(62, 99, 242, 0.12);
  color: var(--text);
  text-decoration: none;
}

/* ---------- hero ---------- */

.hero {
  text-align: center;
  padding: clamp(5rem, 13vh, 9rem) 0 clamp(4.5rem, 10vh, 7.5rem);
}

.hero-logo {
  height: clamp(88px, 14vw, 132px);
  width: auto;
  margin: 0 auto 2rem;
  display: block;
}

.brand-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(18, 23, 36, 0.75);
  font-family: var(--mono);
  font-size: 0.71875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.brand-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cobalt-bright);
  box-shadow: 0 0 10px rgba(91, 125, 255, 0.9);
}

.hero h1 {
  margin: 1.75rem auto 0;
  max-width: 17ch;
  font-size: clamp(2.375rem, 1.4rem + 4.6vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.06;
}

.hero .lede {
  margin: 1.5rem auto 0;
  max-width: 56ch;
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: var(--text-soft);
}

.hero-ctas {
  margin-top: 2.5rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-foot {
  margin-top: clamp(3rem, 7vh, 4.5rem);
  color: var(--muted);
}

/* ---------- sections ---------- */

.section {
  padding: clamp(3.5rem, 8vh, 5.5rem) 0;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 1.1rem;
}

/* ---------- company ---------- */

.company-panel {
  padding: clamp(1.75rem, 4vw, 3.25rem);
  display: grid;
  grid-template-columns: 1.05fr 1.3fr;
  gap: 2rem 3.5rem;
  align-items: start;
}

.company-panel h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.6vw, 2.25rem);
  font-weight: 650;
  letter-spacing: -0.018em;
  line-height: 1.2;
}

.company-copy p {
  color: var(--text-soft);
}

.company-copy p + p {
  margin-top: 1.1rem;
  color: var(--muted);
}

/* ---------- products ---------- */

.product-panel {
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.9fr 1.25fr;
  align-items: stretch;
}

.product-media {
  background:
    radial-gradient(420px 300px at 50% 45%, rgba(62, 99, 242, 0.12), transparent 70%),
    var(--panel-deep);
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
  min-height: 300px;
}

.product-media img {
  max-width: min(70%, 260px);
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.7);
}

.product-info {
  padding: clamp(1.75rem, 4vw, 3rem);
}

.product-kicker {
  font-family: var(--mono);
  font-size: 0.71875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.product-info h3 {
  margin-top: 0.7rem;
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.product-desc {
  margin-top: 1rem;
  color: var(--text-soft);
  max-width: 52ch;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.4rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(148, 163, 197, 0.06);
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.status-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cobalt-bright);
  box-shadow: 0 0 8px rgba(91, 125, 255, 0.9);
}

.product-actions {
  margin-top: 1.8rem;
}

/* ---------- contact ---------- */

.contact-panel {
  padding: clamp(2.5rem, 6vw, 4.5rem);
  text-align: center;
  background:
    radial-gradient(640px 320px at 50% 0%, rgba(62, 99, 242, 0.14), transparent 70%),
    linear-gradient(180deg, rgba(148, 163, 197, 0.06), rgba(148, 163, 197, 0.015) 40%),
    var(--panel);
}

.contact-panel .section-label {
  margin-bottom: 0.9rem;
}

.contact-panel h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.6vw, 2.25rem);
  font-weight: 650;
  letter-spacing: -0.018em;
}

.contact-email {
  display: inline-block;
  margin-top: 1.4rem;
  font-size: clamp(1.1875rem, 0.5rem + 3.4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--text);
  border-bottom: 2px solid var(--cobalt);
  padding-bottom: 0.3rem;
  transition: color 150ms ease, border-color 150ms ease;
  overflow-wrap: anywhere;
}

.contact-email:hover {
  color: var(--cobalt-bright);
  border-color: var(--cobalt-bright);
  text-decoration: none;
}

.contact-meta {
  margin-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  padding: 2.25rem 0 2.75rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: baseline;
}

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

.footer-nav {
  display: flex;
  gap: 1.5rem;
}

.footer-nav a {
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-nav a:hover {
  color: var(--text);
}

.footer-legal {
  flex-basis: 100%;
  font-size: 0.8125rem !important;
  opacity: 0.75;
}

/* ---------- legal pages (privacy / terms) ---------- */

.page {
  padding: clamp(4rem, 9vh, 6.5rem) 0 clamp(4.5rem, 9vh, 7rem);
}

.page-header .eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.page-header .eyebrow .num {
  color: var(--accent-text);
  margin-right: 0.5em;
}

.page-header h1 {
  font-size: clamp(1.75rem, 1.4rem + 1.8vw, 2.5rem);
  font-weight: 650;
  letter-spacing: -0.018em;
}

.page-header .effective {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.prose {
  margin-top: 3rem;
  max-width: 68ch;
}

.prose h2 {
  font-size: 1.1875rem;
  font-weight: 600;
  margin: 2.5rem 0 0.75rem;
}

.prose p {
  color: var(--muted);
  margin: 0 0 1rem;
}

.prose p strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- 404 ---------- */

.notfound {
  padding: clamp(6rem, 18vh, 12rem) 0;
}

.notfound .eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.notfound .eyebrow .num {
  color: var(--accent-text);
  margin-right: 0.5em;
}

.notfound h1 {
  font-size: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  font-weight: 650;
  letter-spacing: -0.018em;
}

.notfound p {
  margin-top: 1.25rem;
  color: var(--muted);
  max-width: 45ch;
}

.notfound a {
  display: inline-block;
  margin-top: 2rem;
}

/* ---------- responsive ---------- */

@media (max-width: 820px) {
  .company-panel {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .product-panel {
    grid-template-columns: 1fr;
  }

  .product-media {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    min-height: 200px;
    padding: 2rem;
  }
}

@media (max-width: 720px) {
  .section {
    padding: 3rem 0;
  }

  .hero {
    padding: 4rem 0 3.5rem;
  }

  .hero-ctas .btn,
  .hero-ctas .btn-ghost {
    width: 100%;
    max-width: 320px;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .site-nav {
    gap: 0.8rem;
  }

  .site-nav a {
    font-size: 0.875rem;
  }

  .wordmark span {
    display: none; /* "DDAI" alone at very narrow widths */
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}