/* ====================================================================
   INTREST — modern chic, black / deep purple / vivid green
   ==================================================================== */

:root {
  /* Core palette */
  --black: #050308;
  --black-1: #0a0612;
  --black-2: #110a1c;
  --black-3: #1a0f2e;

  /* Deep purple */
  --purple-900: #1a0a2e;
  --purple-800: #2a0a4a;
  --purple-700: #3d0e6b;
  --purple-600: #5a1591;
  --purple-500: #7c2db8;
  --purple-400: #a455e0;
  --purple-300: #c891f5;

  /* Vivid green */
  --green-600: #00cc6a;
  --green-500: #00ff88;
  --green-400: #39ff9c;
  --green-300: #6effb6;
  --green-glow: rgba(0, 255, 136, 0.5);

  /* Neutrals */
  --white: #ffffff;
  --white-90: rgba(255, 255, 255, 0.9);
  --white-70: rgba(255, 255, 255, 0.7);
  --white-50: rgba(255, 255, 255, 0.5);
  --white-30: rgba(255, 255, 255, 0.3);
  --white-15: rgba(255, 255, 255, 0.15);
  --white-08: rgba(255, 255, 255, 0.08);
  --white-04: rgba(255, 255, 255, 0.04);

  /* Layout */
  --container: 1200px;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;

  /* Fonts */
  --font-sans: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  background: var(--black);
  color: var(--white-90);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ====================================================================
   Ambient background layers
   ==================================================================== */

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(124, 45, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 45, 184, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at top, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at top, black 30%, transparent 80%);
}

.bg-noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.95' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.5 0 0 0 0 0.2 0 0 0 0 0.8 0 0 0 0.5 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.bg-gradient-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  will-change: transform;
}

.blob-purple {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--purple-600) 0%, var(--purple-800) 50%, transparent 70%);
  top: -200px;
  left: -200px;
  animation: drift-purple 28s ease-in-out infinite alternate;
}

.blob-green {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--green-500) 0%, transparent 65%);
  bottom: -200px;
  right: -150px;
  opacity: 0.18;
  animation: drift-green 34s ease-in-out infinite alternate;
}

@keyframes drift-purple {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(120px, 80px) scale(1.15); }
}
@keyframes drift-green {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-100px, -60px) scale(1.2); }
}

/* All content above background */
.nav-wrap, main, footer { position: relative; z-index: 2; }

/* ====================================================================
   Layout
   ==================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green-400);
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: 999px;
  background: rgba(0, 255, 136, 0.04);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
}

.section-sub {
  font-size: 1.0625rem;
  color: var(--white-70);
  line-height: 1.65;
}

/* ====================================================================
   Nav
   ==================================================================== */

.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 3, 8, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--white-08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--white);
}

.wordmark-text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.22em;
  background: linear-gradient(135deg, var(--white) 0%, var(--purple-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.wordmark-text.small { font-size: 0.9375rem; }

.wordmark-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 12px var(--green-glow);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 12px var(--green-glow); }
  50%      { opacity: 0.5; box-shadow: 0 0 6px var(--green-glow); }
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
  margin: 0 auto 0 0;
}

.nav-links a {
  color: var(--white-70);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--white);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0;
  width: 0; height: 1px;
  background: var(--green-500);
  box-shadow: 0 0 8px var(--green-glow);
  transition: width 0.25s ease;
}

.nav-links a:hover::after { width: 100%; }

.nav-toggle { display: none; }

/* ====================================================================
   Buttons
   ==================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: var(--black);
  background: linear-gradient(135deg, var(--green-500) 0%, var(--green-400) 50%, var(--green-300) 100%);
  background-size: 200% 200%;
  background-position: 0% 50%;
  font-weight: 600;
  box-shadow:
    0 0 24px rgba(0, 255, 136, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:hover {
  background-position: 100% 50%;
  box-shadow:
    0 0 40px rgba(0, 255, 136, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--white-90);
  border-color: var(--white-15);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  color: var(--white);
  border-color: var(--purple-400);
  background: rgba(124, 45, 184, 0.1);
  box-shadow: 0 0 24px rgba(164, 85, 224, 0.25);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.nav-cta { padding: 10px 18px; font-size: 0.875rem; }

/* ====================================================================
   Hero
   ==================================================================== */

.hero {
  padding: 140px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  /* Sweeping "flash" highlight */
  content: '';
  position: absolute;
  top: -20%; left: -20%;
  width: 140%; height: 60%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(124, 45, 184, 0.08) 30%,
    rgba(0, 255, 136, 0.04) 50%,
    rgba(124, 45, 184, 0.08) 70%,
    transparent 100%
  );
  transform: skewY(-3deg);
  pointer-events: none;
  animation: flash-sweep 12s linear infinite;
}

@keyframes flash-sweep {
  0%   { transform: skewY(-3deg) translateX(-20%); }
  100% { transform: skewY(-3deg) translateX(20%); }
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-70);
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--white-08);
  background: rgba(255, 255, 255, 0.02);
  margin-bottom: 32px;
}

.kicker-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 10px var(--green-glow);
  animation: pulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.75rem, 7vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.0;
  color: var(--white);
  margin-bottom: 32px;
  max-width: 900px;
}

.grad-text {
  background: linear-gradient(
    100deg,
    var(--purple-400) 0%,
    var(--purple-300) 30%,
    var(--green-500) 70%,
    var(--green-300) 100%
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: grad-shift 8s ease-in-out infinite alternate;
  position: relative;
}

@keyframes grad-shift {
  0%   { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.hero-sub {
  font-size: 1.1875rem;
  color: var(--white-70);
  line-height: 1.65;
  max-width: 640px;
  margin-bottom: 48px;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ====================================================================
   Demo / Chatbot
   ==================================================================== */

.demo-section {
  padding: 60px 0 120px;
}

.chatbot-frame {
  max-width: 880px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(124, 45, 184, 0.08) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid var(--white-08);
  overflow: hidden;
  position: relative;
  box-shadow:
    0 0 60px rgba(124, 45, 184, 0.15),
    0 0 0 1px rgba(0, 255, 136, 0.05);
}

.chatbot-frame::before {
  /* Glowing border accent */
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--purple-500), transparent 30%, transparent 70%, var(--green-500));
  -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;
  padding: 1px;
  opacity: 0.5;
  pointer-events: none;
}

.chatbot-frame-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid var(--white-08);
}

.frame-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--white-15);
}
.frame-dot:nth-child(1) { background: rgba(255, 95, 86, 0.5); }
.frame-dot:nth-child(2) { background: rgba(255, 189, 46, 0.5); }
.frame-dot:nth-child(3) { background: rgba(39, 201, 63, 0.5); }

.frame-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--white-50);
  margin-left: 12px;
}

.frame-status {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green-400);
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 6px var(--green-glow);
}

.chatbot-frame iframe {
  display: block;
  border: none;
  background: transparent;
}

.demo-disclaimer {
  max-width: 880px;
  margin: 16px auto 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--white-30);
}

/* ====================================================================
   Capability cards
   ==================================================================== */

.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cap-card {
  background: linear-gradient(180deg, rgba(124, 45, 184, 0.04) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid var(--white-08);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.cap-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--purple-400), transparent);
  opacity: 0.5;
}

.cap-card:hover {
  transform: translateY(-4px);
  border-color: rgba(164, 85, 224, 0.3);
  box-shadow:
    0 20px 60px rgba(124, 45, 184, 0.2),
    0 0 30px rgba(0, 255, 136, 0.05);
}

.cap-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  border: 1px solid var(--white-08);
  background: linear-gradient(135deg, rgba(124, 45, 184, 0.2), rgba(0, 255, 136, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  color: var(--green-400);
}

.cap-icon svg { width: 22px; height: 22px; }

.cap-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.cap-card > p {
  color: var(--white-70);
  font-size: 0.9375rem;
  margin-bottom: 22px;
}

.cap-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cap-card li {
  font-size: 0.875rem;
  color: var(--white-50);
  padding: 10px 0;
  border-top: 1px solid var(--white-04);
  display: flex;
  align-items: center;
  gap: 10px;
}

.cap-card li::before {
  content: '';
  flex-shrink: 0;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 6px var(--green-glow);
}

/* ====================================================================
   Industry cards
   ==================================================================== */

.industry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.industry-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--white-08);
  border-radius: var(--radius);
  padding: 32px 30px;
  transition: border-color 0.3s, background 0.3s;
}

.industry-card:hover {
  border-color: rgba(0, 255, 136, 0.25);
  background: rgba(0, 255, 136, 0.02);
}

.industry-sector {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-400);
  margin-bottom: 14px;
}

.industry-card h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}

.industry-card p {
  font-size: 0.9375rem;
  color: var(--white-70);
  line-height: 1.65;
}

/* ====================================================================
   Process list
   ==================================================================== */

.process-list {
  list-style: none;
  max-width: 800px;
  margin: 0 auto;
  padding: 0;
}

.process-step {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-top: 1px solid var(--white-08);
  align-items: start;
}

.process-step:first-child { border-top: none; padding-top: 0; }

.step-num {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 500;
  background: linear-gradient(135deg, var(--purple-300) 0%, var(--green-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}

.process-step h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.process-step p {
  color: var(--white-70);
  font-size: 1rem;
  line-height: 1.7;
}

/* ====================================================================
   CTA Section
   ==================================================================== */

.cta-section {
  padding: 100px 0 140px;
}

.cta-inner {
  max-width: 760px;
  text-align: center;
  padding-top: 80px;
  padding-bottom: 80px;
  background: radial-gradient(
    ellipse at center,
    rgba(124, 45, 184, 0.12) 0%,
    rgba(0, 255, 136, 0.04) 40%,
    transparent 70%
  );
  border-radius: var(--radius-lg);
  position: relative;
}

.cta-inner::before {
  /* Border halo */
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(164, 85, 224, 0.4), rgba(0, 255, 136, 0.2), rgba(164, 85, 224, 0.4));
  -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;
  pointer-events: none;
  opacity: 0.6;
}

.cta-title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.cta-sub {
  font-size: 1.0625rem;
  color: var(--white-70);
  margin-bottom: 32px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.cta-or {
  margin-top: 18px;
  font-size: 0.875rem;
  color: var(--white-50);
}

.cta-or a {
  color: var(--green-400);
  text-decoration: none;
  border-bottom: 1px dashed var(--green-400);
}

/* ====================================================================
   Footer
   ==================================================================== */

.footer {
  border-top: 1px solid var(--white-08);
  padding: 56px 0 40px;
  background: rgba(0, 0, 0, 0.4);
  position: relative;
  z-index: 2;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1.5fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-brand p {
  font-size: 0.8125rem;
  color: var(--white-50);
  margin-top: 8px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.footer-links a {
  color: var(--white-70);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--green-400); }

.footer-meta {
  text-align: right;
  font-size: 0.8125rem;
  color: var(--white-50);
}

.footer-meta p { line-height: 1.6; }

.footer-domain {
  font-family: var(--font-mono);
  color: var(--green-400);
  margin-top: 4px;
}

/* ====================================================================
   Animation: fade-in on load
   ==================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.fade-in:nth-child(2) { animation-delay: 0.08s; }
.fade-in:nth-child(3) { animation-delay: 0.16s; }
.fade-in:nth-child(4) { animation-delay: 0.24s; }
.fade-in:nth-child(5) { animation-delay: 0.32s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ====================================================================
   Responsive
   ==================================================================== */

@media (max-width: 960px) {
  .cap-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-meta { text-align: left; }
  .footer-links { gap: 16px; }
}

@media (max-width: 720px) {
  .container { padding: 0 22px; }
  .section { padding: 80px 0; }
  .hero { padding: 80px 0 80px; }

  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 28px; height: 28px;
    border: none;
    background: transparent;
    cursor: pointer;
    justify-content: center;
  }
  .nav-toggle span {
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform 0.25s, opacity 0.25s;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .nav-wrap.menu-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: rgba(5, 3, 8, 0.95);
    backdrop-filter: blur(20px);
    padding: 24px 32px;
    gap: 18px;
    border-bottom: 1px solid var(--white-08);
  }

  .hero-ctas { width: 100%; }
  .hero-ctas .btn { flex: 1; justify-content: center; }

  .process-step { grid-template-columns: 1fr; gap: 6px; padding: 24px 0; }
  .step-num { font-size: 1.75rem; }

  .chatbot-frame iframe { height: 560px; }
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
}