/* ===================================================================
   DFW AI Company — neural / cyber palette
   Dark space + electric cyan + DFW terracotta accent
   =================================================================== */

:root,
[data-theme='dark'] {
  /* Brand */
  --accent: #ff6a3d;        /* DFW terracotta (energetic) */
  --accent-2: #00d4ff;       /* electric cyan — neural net glow */
  --accent-3: #7c5bff;       /* deep violet for gradient stops */

  /* Surfaces */
  --bg: #07080d;
  --bg-2: #0c0e16;
  --surface: #11141f;
  --surface-2: #161a28;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* Text */
  --text: #e9ecf5;
  --text-muted: #9097ae;
  --text-faint: #5a607a;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.25vw, 0.95rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.4rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.75rem, 1.6rem + 4.5vw, 5rem);
  --text-hero: clamp(3rem, 1rem + 7vw, 7.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;

  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --content-wide: 1240px;
  --transition: 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================================
   Base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  position: relative;
}

/* Big atmospheric gradient behind canvas */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(60% 50% at 50% 10%, rgba(124, 91, 255, 0.18), transparent 70%),
    radial-gradient(70% 60% at 80% 80%, rgba(255, 106, 61, 0.14), transparent 70%),
    radial-gradient(50% 40% at 10% 90%, rgba(0, 212, 255, 0.12), transparent 70%),
    var(--bg);
  pointer-events: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-wrap: balance;
}

p { text-wrap: pretty; max-width: 64ch; }

::selection {
  background: var(--accent);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   Background canvas + grain
   ============================================================ */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  display: block;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-4) clamp(var(--space-4), 4vw, var(--space-12));
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: linear-gradient(180deg, rgba(7, 8, 13, 0.55), rgba(7, 8, 13, 0.25));
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
}
.logo svg { transition: transform 600ms cubic-bezier(0.16,1,0.3,1); }
.logo:hover svg { transform: rotate(180deg); }
.logo-text { font-size: 1.05rem; letter-spacing: 0.02em; color: var(--text); }
.logo-accent { color: var(--accent); }

.site-header nav {
  display: flex;
  gap: var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.site-header nav a {
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition);
}
.site-header nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.site-header nav a:hover { color: var(--text); }
.site-header nav a:hover::after { transform: scaleX(1); }

@media (max-width: 720px) {
  .site-header nav { display: none; }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  cursor: pointer;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn-sm { padding: 0.55rem 1rem; font-size: 0.875rem; }
.btn-lg { padding: 1.05rem 1.6rem; font-size: 1rem; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #ff8a5b 100%);
  color: #0a0a12;
  box-shadow:
    0 6px 24px -8px rgba(255, 106, 61, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 14px 32px -8px rgba(255, 106, 61, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn-primary svg { transition: transform var(--transition); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-2);
  color: var(--accent-2);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  position: relative;
  padding: clamp(7rem, 14vh, 10rem) clamp(var(--space-4), 5vw, var(--space-16))
    clamp(var(--space-12), 8vh, var(--space-20));
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  margin-bottom: var(--space-8);
  opacity: 0;
  animation: fade-up 800ms 200ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
  animation: pulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: var(--text-hero);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 0.95;
  margin-bottom: var(--space-8);
}
.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: fade-up 1100ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-title .line:nth-child(1) { animation-delay: 350ms; }
.hero-title .line:nth-child(2) { animation-delay: 500ms; }
.hero-title .line:nth-child(3) { animation-delay: 650ms; }
.hero-title em {
  font-style: italic;
  font-family: 'Space Grotesk', serif;
  background: linear-gradient(135deg, var(--accent-2), var(--accent-3) 60%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}

.hero-sub {
  font-size: clamp(1.1rem, 0.95rem + 0.6vw, 1.4rem);
  color: var(--text-muted);
  max-width: 38ch;
  line-height: 1.5;
  margin-bottom: var(--space-10);
  opacity: 0;
  animation: fade-up 1000ms 850ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.text-accent { color: var(--text); border-bottom: 2px solid var(--accent); padding-bottom: 1px; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-16);
  opacity: 0;
  animation: fade-up 1000ms 1000ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(var(--space-6), 4vw, var(--space-16));
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  opacity: 0;
  animation: fade-up 1000ms 1200ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-meta div { display: flex; flex-direction: column; }
.hero-meta strong {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 1.1rem + 1.5vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}
.hero-meta span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-1);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-faint);
  animation: bounce 2.5s ease-in-out infinite;
}
@media (max-width: 720px) { .hero-scroll { display: none; } }

/* ============================================================
   Sections
   ============================================================ */
.section {
  padding: clamp(var(--space-16), 10vh, var(--space-32))
    clamp(var(--space-4), 5vw, var(--space-16));
  position: relative;
}

.section-head {
  max-width: var(--content-wide);
  margin: 0 auto var(--space-16);
}
.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-2);
  margin-bottom: var(--space-4);
}
.section-head h2 {
  font-size: var(--text-2xl);
  max-width: 22ch;
  margin-bottom: var(--space-4);
}
.section-head p {
  color: var(--text-muted);
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.15rem);
  max-width: 60ch;
}

/* ============================================================
   Services
   ============================================================ */
.services-grid {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.service-card {
  position: relative;
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, var(--accent-2) 60%, transparent 80%);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
.service-card:hover {
  transform: translateY(-6px);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 100%);
}
.service-card:hover::before { opacity: 1; }

.service-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-6);
}
.service-card h3 {
  font-size: clamp(1.25rem, 1.05rem + 0.6vw, 1.5rem);
  margin-bottom: var(--space-3);
}
.service-card p {
  color: var(--text-muted);
  margin-bottom: var(--space-6);
  font-size: 0.97rem;
}
.service-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: 0.92rem;
  color: var(--text);
}
.service-card ul li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-muted);
}
.service-card ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.65em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 8px var(--accent-2);
}

/* ============================================================
   Process
   ============================================================ */
.process { background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.35) 50%, transparent); }

.process-steps {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  list-style: none;
  counter-reset: step;
  position: relative;
}
.process-steps li {
  position: relative;
  padding: var(--space-8) var(--space-6);
  border-left: 1px solid var(--border-strong);
}
.process-steps li::before {
  content: '';
  position: absolute;
  left: -5px; top: var(--space-8);
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
}
.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-2);
  letter-spacing: 0.18em;
  margin-bottom: var(--space-3);
}
.process-steps h3 {
  font-size: 1.35rem;
  margin-bottom: var(--space-3);
}
.process-steps p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ============================================================
   Contact
   ============================================================ */
.contact-grid {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  padding: clamp(var(--space-8), 4vw, var(--space-16));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(0, 212, 255, 0.06) 0%, rgba(255, 106, 61, 0.04) 100%),
    rgba(7, 8, 13, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}
.contact-grid::before {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-2), transparent 60%);
  opacity: 0.08;
  top: -150px; right: -150px;
  pointer-events: none;
}

.contact-copy h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}
.contact-copy p {
  color: var(--text-muted);
  margin-bottom: var(--space-8);
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.contact-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.95rem;
  color: var(--text);
}
.contact-list svg { color: var(--accent-2); flex-shrink: 0; }
.contact-list a:hover { color: var(--accent); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  z-index: 1;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 540px) { .form-row { grid-template-columns: 1fr; } }

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.contact-form label span {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.contact-form input,
.contact-form textarea {
  padding: 0.9rem 1rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 0.97rem;
  font-family: inherit;
  resize: vertical;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-2);
  background: rgba(0, 0, 0, 0.55);
  box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.12);
}
.contact-form textarea { min-height: 110px; }

.form-success {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-2);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--accent-2);
  border-radius: var(--radius-md);
  background: rgba(0, 212, 255, 0.08);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  margin-top: var(--space-20);
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
}
.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-16) clamp(var(--space-4), 5vw, var(--space-16)) var(--space-12);
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: var(--space-12);
}
@media (max-width: 720px) { .footer-inner { grid-template-columns: 1fr; } }
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: var(--space-3);
  max-width: 36ch;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-8);
}
.footer-cols h4 {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: var(--space-4);
}
.footer-cols a, .footer-cols span {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: var(--space-1) 0;
  transition: color var(--transition);
}
.footer-cols a:hover { color: var(--accent-2); }
.footer-bottom {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-6) clamp(var(--space-4), 5vw, var(--space-16));
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 0.82rem;
  color: var(--text-faint);
}
.muted { color: var(--text-faint); }

/* ============================================================
   Animations
   ============================================================ */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.85); }
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* Reveal on scroll utility (added by JS) */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 900ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 900ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in { opacity: 1; transform: translateY(0); }