/* ============================================================
   NO BRAINER HQ — Design Tokens + Component Styles
   Dark AI-tech aesthetic: deep blacks, electric blue accent,
   subtle cyan glow, glass morphism cards
   ============================================================ */

/* ---- Fonts ---- */
@import url('https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@400,500,700,800,900&f[]=satoshi@300,400,500,700&display=swap');

/* ---- Type Scale ---- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ---- Spacing ---- */
:root {
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --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;
}

/* ---- Color Palette — Dark AI Tech ---- */
:root, [data-theme="dark"] {
  --color-bg:               #090b10;
  --color-surface:          #0d1017;
  --color-surface-2:        #111520;
  --color-surface-offset:   #141824;
  --color-divider:          #1e2436;
  --color-border:           #252d42;

  --color-text:             #e8eaf2;
  --color-text-muted:       #7a84a0;
  --color-text-faint:       #3d4560;
  --color-text-inverse:     #090b10;

  /* Electric blue primary */
  --color-primary:          #4f8ef7;
  --color-primary-hover:    #6ba3ff;
  --color-primary-active:   #3570e0;
  --color-primary-glow:     rgba(79, 142, 247, 0.15);
  --color-primary-subtle:   rgba(79, 142, 247, 0.08);

  /* Cyan accent for secondary highlights */
  --color-accent:           #00d4ff;
  --color-accent-glow:      rgba(0, 212, 255, 0.12);

  /* Semantic */
  --color-success:          #22d3a0;
  --color-warning:          #f59e0b;
  --color-error:            #ef4444;

  /* Shadows — deep, glowing */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.03);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05);
  --shadow-glow: 0 0 40px rgba(79, 142, 247, 0.2), 0 0 80px rgba(79, 142, 247, 0.08);
  --shadow-glow-sm: 0 0 20px rgba(79, 142, 247, 0.15);

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* Light mode override */
[data-theme="light"] {
  --color-bg:               #f4f6fb;
  --color-surface:          #ffffff;
  --color-surface-2:        #f8f9ff;
  --color-surface-offset:   #eef1f9;
  --color-divider:          #dde3f0;
  --color-border:           #c8d0e8;
  --color-text:             #111827;
  --color-text-muted:       #5a6485;
  --color-text-faint:       #9da8c4;
  --color-text-inverse:     #ffffff;
  --color-primary:          #2563eb;
  --color-primary-hover:    #1d4ed8;
  --color-primary-glow:     rgba(37, 99, 235, 0.12);
  --color-primary-subtle:   rgba(37, 99, 235, 0.06);
  --color-accent:           #0891b2;
  --color-accent-glow:      rgba(8, 145, 178, 0.1);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  --shadow-glow-sm: 0 0 20px rgba(37, 99, 235, 0.12);
}

/* System dark-mode fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #090b10;
    --color-surface: #0d1017;
    --color-surface-2: #111520;
    --color-surface-offset: #141824;
    --color-divider: #1e2436;
    --color-border: #252d42;
    --color-text: #e8eaf2;
    --color-text-muted: #7a84a0;
    --color-text-faint: #3d4560;
    --color-text-inverse: #090b10;
    --color-primary: #4f8ef7;
    --color-primary-hover: #6ba3ff;
    --color-primary-active: #3570e0;
    --color-primary-glow: rgba(79, 142, 247, 0.15);
    --color-primary-subtle: rgba(79, 142, 247, 0.08);
    --color-accent: #00d4ff;
    --color-accent-glow: rgba(0, 212, 255, 0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.6);
    --shadow-glow: 0 0 40px rgba(79, 142, 247, 0.2), 0 0 80px rgba(79, 142, 247, 0.08);
    --shadow-glow-sm: 0 0 20px rgba(79, 142, 247, 0.15);
  }
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}
.container--narrow {
  max-width: var(--content-default);
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.display {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.heading-xl {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.heading-lg {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.heading-md {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.25;
}

/* ============================================================
   COMPONENTS
   ============================================================ */

/* --- Badge / Label pill --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border: 1px solid rgba(79, 142, 247, 0.2);
}
[data-theme="light"] .badge {
  border-color: rgba(37, 99, 235, 0.2);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform var(--transition-interactive),
              box-shadow var(--transition-interactive),
              background var(--transition-interactive),
              color var(--transition-interactive),
              border-color var(--transition-interactive);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 0 0 0 var(--color-primary-glow);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-sm), 0 4px 16px rgba(79, 142, 247, 0.25);
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

/* --- Glass Card --- */
.glass-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}
[data-theme="light"] .glass-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,249,255,0.7) 100%);
  border-color: var(--color-border);
}
.glass-card:hover {
  border-color: rgba(79, 142, 247, 0.4);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-3px);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
/* ============================================================
   FLOATING PILL NAV
   ============================================================ */
.nav {
  position: fixed;
  top: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: calc(100% - var(--space-8));
  max-width: 860px;
  /* Initial: slightly transparent, will solidify on scroll */
  transition: box-shadow 0.4s var(--ease-out),
              background 0.4s var(--ease-out),
              border-color 0.4s var(--ease-out),
              top 0.4s var(--ease-out);
}

.nav-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: rgba(13, 16, 23, 0.7);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(37, 45, 66, 0.8);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35),
              0 0 0 1px rgba(255,255,255,0.04) inset;
  transition: box-shadow 0.4s var(--ease-out),
              border-color 0.4s var(--ease-out),
              background 0.4s var(--ease-out);
}
[data-theme="light"] .nav-pill {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(200, 208, 232, 0.9);
  box-shadow: 0 4px 24px rgba(0,0,0,0.1),
              0 0 0 1px rgba(255,255,255,0.8) inset;
}
.nav.scrolled .nav-pill {
  background: rgba(13, 16, 23, 0.92);
  border-color: rgba(79, 142, 247, 0.2);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5),
              0 0 0 1px rgba(79, 142, 247, 0.08) inset,
              0 0 30px rgba(79, 142, 247, 0.06);
}
[data-theme="light"] .nav.scrolled .nav-pill {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: 0 8px 40px rgba(0,0,0,0.12),
              0 0 0 1px rgba(255,255,255,0.9) inset;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  transition: background var(--transition-interactive);
}
.nav-logo:hover {
  background: rgba(79, 142, 247, 0.08);
}
.nav-logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

/* Center links cluster */
.nav-links-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-full);
  padding: var(--space-1);
}
[data-theme="light"] .nav-links-wrap {
  background: rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.07);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}
.nav-links a {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: color var(--transition-interactive),
              background var(--transition-interactive);
}
.nav-links a:hover {
  color: var(--color-text);
  background: rgba(79, 142, 247, 0.1);
}
.nav-links a.active {
  color: var(--color-primary);
  background: rgba(79, 142, 247, 0.1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
  border-color: var(--color-primary);
}

/* CTA shrinks slightly in the pill */
.nav .btn-primary {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* Mobile nav */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}
.nav-hamburger span {
  width: 16px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  display: block;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================================
   MOBILE BOTTOM NAV PILL
   ============================================================ */

/* Hide top pill nav + hamburger on mobile — bottom bar takes over */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav-hamburger { display: none; }
}

/* Hidden on desktop */
.mobile-bottom-nav { display: none; }

@media (max-width: 768px) {
  .mobile-bottom-nav {
    display: block;
    position: fixed;
    /* sit above the home indicator on notched phones */
    bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(0);
    z-index: 200;
    /* JS adds .hidden — slides the whole thing down */
    transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1),
                opacity  0.32s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    /* width driven by content, capped to screen */
    width: max-content;
    max-width: calc(100vw - 32px);
  }

  .mobile-bottom-nav.hidden {
    transform: translateX(-50%) translateY(calc(100% + 24px));
    opacity: 0;
    pointer-events: none;
  }

  /* ---- The pill itself ---- */
  .mobile-bottom-pill {
    display: flex;
    align-items: center;
    gap: 1px;
    padding: 5px;
    background: rgba(11, 14, 22, 0.92);
    backdrop-filter: blur(32px) saturate(180%);
    -webkit-backdrop-filter: blur(32px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    box-shadow:
      0 8px 32px rgba(0, 0, 0, 0.6),
      0 0 0 1px rgba(255, 255, 255, 0.04) inset,
      0 0 28px rgba(79, 142, 247, 0.08);
    pointer-events: all;
    white-space: nowrap;
  }

  [data-theme="light"] .mobile-bottom-pill {
    background: rgba(255, 255, 255, 0.94);
    border-color: rgba(0, 0, 0, 0.09);
    box-shadow:
      0 8px 32px rgba(0, 0, 0, 0.12),
      0 0 0 1px rgba(255, 255, 255, 0.9) inset;
  }

  /* ---- Individual nav items ---- */
  .mbn-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 10px;
    border-radius: 999px;
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--color-text-muted);
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    transition:
      color  180ms cubic-bezier(0.16, 1, 0.3, 1),
      background 180ms cubic-bezier(0.16, 1, 0.3, 1),
      transform  180ms cubic-bezier(0.16, 1, 0.3, 1);
  }

  .mbn-item:active  { transform: scale(0.94); }

  .mbn-item:hover,
  .mbn-item.active {
    color: var(--color-primary);
    background: rgba(79, 142, 247, 0.12);
  }

  [data-theme="light"] .mbn-item:hover,
  [data-theme="light"] .mbn-item.active {
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.08);
  }

  /* ---- Book Call CTA chip ---- */
  .mbn-item--cta {
    background: var(--color-primary);
    color: #fff !important;
    padding: 7px 14px;
    font-weight: 700;
  }
  .mbn-item--cta:hover {
    background: var(--color-primary-hover);
    color: #fff !important;
  }
  /* Never dim the CTA as "active" */
  .mbn-item--cta.active {
    background: var(--color-primary);
    color: #fff !important;
  }
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

/* Animated grid background */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 142, 247, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 142, 247, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 40%, transparent 100%);
  animation: gridDrift 20s ease-in-out infinite alternate;
}
@keyframes gridDrift {
  from { transform: translate(0, 0); }
  to   { transform: translate(10px, 10px); }
}

/* Radial glow blobs */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-glow--blue {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(79, 142, 247, 0.15), transparent 70%);
  top: -100px; left: -100px;
  animation: floatBlob 8s ease-in-out infinite alternate;
}
.hero-glow--cyan {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
  bottom: -50px; right: -50px;
  animation: floatBlob 10s ease-in-out infinite alternate-reverse;
}
@keyframes floatBlob {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, -30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 5vw, var(--space-20));
  align-items: center;
}

.hero-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.hero-badge {
  display: inline-flex;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-text);
}

.hero-headline .gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subheadline {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 52ch;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Architecture diagram */
.hero-diagram {
  position: relative;
  z-index: 2;
}

.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.arch-node {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 320px;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
  position: relative;
}
[data-theme="light"] .arch-node {
  background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(248,249,255,0.85));
}
.arch-node:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(79, 142, 247, 0.15);
}
.arch-node-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.arch-node-icon.blue  { background: rgba(79, 142, 247, 0.15); color: var(--color-primary); }
.arch-node-icon.cyan  { background: rgba(0, 212, 255, 0.12); color: var(--color-accent); }
.arch-node-icon.green { background: rgba(34, 211, 160, 0.12); color: var(--color-success); }
.arch-node-icon.purple { background: rgba(168, 85, 247, 0.12); color: #c084fc; }
.arch-node-icon.gold  { background: rgba(245, 158, 11, 0.12); color: var(--color-warning); }

.arch-node-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.arch-node-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: auto;
}

.arch-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding-block: var(--space-1);
}
.arch-arrow-line {
  width: 1px;
  height: 20px;
  background: linear-gradient(to bottom, var(--color-border), var(--color-primary));
  opacity: 0.6;
}
.arch-arrow-head {
  color: var(--color-primary);
  opacity: 0.7;
  font-size: 10px;
  margin-top: -2px;
}

/* Hero stats */
.hero-stats {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  flex-wrap: wrap;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.hero-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  white-space: nowrap;
}
.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
  }
  .hero-diagram {
    display: none;
  }
}

/* ============================================================
   TRUST SECTION
   ============================================================ */
.trust-section {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.trust-inner {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  flex-wrap: wrap;
  justify-content: space-between;
}
.trust-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  white-space: nowrap;
}
.trust-pills {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  flex: 1;
  justify-content: center;
}
.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive),
              border-color var(--transition-interactive),
              background var(--transition-interactive);
}
.trust-pill:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}
.trust-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 4vw, var(--space-16));
}
.section-header .badge {
  margin-bottom: var(--space-5);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}
.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 56ch;
  margin-inline: auto;
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
}
.service-card {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.service-icon.blue   { background: rgba(79, 142, 247, 0.12); color: var(--color-primary); }
.service-icon.cyan   { background: rgba(0, 212, 255, 0.1); color: var(--color-accent); }
.service-icon.green  { background: rgba(34, 211, 160, 0.1); color: var(--color-success); }
.service-icon.purple { background: rgba(168, 85, 247, 0.1); color: #c084fc; }

.service-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}
.service-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.service-arrow {
  margin-top: auto;
  color: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-interactive), transform var(--transition-interactive);
}
.service-card:hover .service-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* ============================================================
   HOW WE WORK
   ============================================================ */
.how-bg {
  background: linear-gradient(to bottom, transparent, var(--color-surface) 20%, var(--color-surface) 80%, transparent);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-primary), var(--color-accent), var(--color-primary), transparent);
  opacity: 0.3;
}
.step-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  align-items: center;
}
.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-primary);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: background var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.step-card:hover .step-number {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-sm);
}
.step-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}
.step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
  .steps-grid::before { display: none; }
}
@media (max-width: 500px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   ARCHITECTURE SECTION
   ============================================================ */
.arch-section-bg {
  position: relative;
  overflow: hidden;
}
.arch-section-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(79, 142, 247, 0.05), transparent);
  pointer-events: none;
}

.arch-full {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  max-width: 560px;
  margin-inline: auto;
}

.arch-full-node {
  width: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-6);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
  position: relative;
}
[data-theme="light"] .arch-full-node {
  background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(248,249,255,0.8));
}
.arch-full-node:hover {
  border-color: rgba(79, 142, 247, 0.5);
  box-shadow: 0 0 30px rgba(79, 142, 247, 0.12);
}

.arch-full-node-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.arch-full-node-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.arch-full-node-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}
.arch-full-node-items {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-left: calc(36px + var(--space-3));
}
.arch-tag {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.arch-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block: var(--space-2);
  gap: 0;
}
.arch-connector-line {
  width: 2px;
  height: 24px;
  background: linear-gradient(to bottom, var(--color-border), var(--color-primary));
  opacity: 0.5;
}
.arch-connector svg {
  color: var(--color-primary);
  opacity: 0.6;
  margin-top: -2px;
}

.arch-outcome {
  background: linear-gradient(135deg, var(--color-primary-subtle), rgba(0, 212, 255, 0.05));
  border-color: rgba(79, 142, 247, 0.3);
}

/* ============================================================
   USE CASES SECTION
   ============================================================ */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}
.usecase-card {
  padding: var(--space-6) var(--space-7);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}
.usecase-bullet {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
  margin-top: 6px;
  box-shadow: 0 0 8px rgba(79, 142, 247, 0.5);
}
.usecase-content {}
.usecase-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.usecase-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: center;
}
.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.about-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}
.about-values {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.about-value {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.about-value-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(0, 212, 255, 0.5);
}

.about-visual {
  position: relative;
}
.about-card-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.about-stat-card {
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.about-stat-val {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.about-stat-lbl {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
}

@media (max-width: 768px) {
  .about-inner {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-section {
  position: relative;
  overflow: hidden;
}
.contact-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(79, 142, 247, 0.06), transparent);
  pointer-events: none;
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-20));
  align-items: start;
}
.contact-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.contact-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--color-text);
}
.contact-headline .gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.contact-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: color var(--transition-interactive),
              border-color var(--transition-interactive),
              background var(--transition-interactive),
              transform var(--transition-interactive);
}
.contact-link:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  transform: translateX(4px);
}
.contact-link svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.form-input,
.form-select,
.form-textarea {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-sm);
  outline: none;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-faint);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-body);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.form-submit {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  justify-content: center;
}

@media (max-width: 768px) {
  .contact-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding-block: clamp(var(--space-12), 5vw, var(--space-20));
  border-top: 1px solid var(--color-divider);
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 32ch;
}
.footer-col-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: 0.03em;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-links a:hover { color: var(--color-text); }
.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer-attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-attribution a:hover { color: var(--color-text-muted); }

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 60%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* Stagger delay helpers */
.delay-1 { animation-delay: 0.05s; }
.delay-2 { animation-delay: 0.1s; }
.delay-3 { animation-delay: 0.15s; }
.delay-4 { animation-delay: 0.2s; }

/* ============================================================
   UTILITY
   ============================================================ */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.divider {
  height: 1px;
  background: var(--color-divider);
  margin-block: var(--space-12);
}


/* Mobile nav tweaks: hide top inline nav links on small screens,
   rely on bottom mobile nav pill instead */
@media (max-width: 768px) {
  .nav-links-wrap {
    display: none;
  }
}


/* Sticky mobile bottom pill nav */
@media (max-width: 768px) {
  .mobile-bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    pointer-events: none; /* allow inner pill to handle clicks */
  }

  .mobile-bottom-pill {
    pointer-events: auto;
    margin: 0 auto var(--space-3);
    max-width: 640px;
  }

  body {
    padding-bottom: 4.5rem; /* keep content above nav */
  }
}


/* Fine-tune mobile bottom pill positioning & centering */
@media (max-width: 768px) {
  .mobile-bottom-nav {
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-end;
  }

  .mobile-bottom-pill {
    width: 100%;
    max-width: 640px;
    margin: 0 auto var(--space-3);
  }
}





/* Override: ensure mobile bottom pill is fully visible and centered */
@media (max-width: 768px) {
  .mobile-bottom-nav {
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .mobile-bottom-nav,
  .mobile-bottom-nav.hidden {
    transform: translateY(0); /* center handled via flex, not translateX */
  }

  .mobile-bottom-pill {
    max-width: calc(100vw - 32px);
    width: 100%;
    margin: 0 16px 16px;
  }
}


/* ============================================================
   Flashlight hover effect (desktop only)
   ============================================================ */

@media (hover: hover) and (pointer: fine) {
  :root {
    --flashlight-x: 50vw;
    --flashlight-y: 50vh;
  }

  .flashlight-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background:
      radial-gradient(
        circle at var(--flashlight-x) var(--flashlight-y),
        rgba(255,255,255,0.11) 0,
        rgba(255,255,255,0.06) 160px,
        transparent 320px
      );
    mix-blend-mode: soft-light;
    opacity: 0;
    transition: opacity 200ms ease-out;
  }

  body.flashlight-active .flashlight-overlay {
    opacity: 1;
  }
}

.mbn-item--theme {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.55rem;
}