/* =============================================================================
   SIMPLEX — Design System & Stylesheet
   Organized: Tokens → Base → Layout → Nav → Sections → Animations → Responsive
   ============================================================================= */

/* =============================================================================
   1. DESIGN TOKENS
   ============================================================================= */
:root {
  /* --- Color: Light mode (default) --- */
  --color-bg:           #ffffff;
  --color-bg-subtle:    #f8f9fa;
  --color-bg-muted:     #f1f3f5;
  --color-border:       #e9ecef;
  --color-border-strong:#d1d5db;
  --color-text:         #111827;
  --color-text-secondary:#4b5563;
  --color-text-muted:   #9ca3af;
  --color-accent:       #1d4ed8;
  --color-accent-hover: #1e40af;
  --color-accent-subtle:#eff6ff;
  --color-accent-text:  #1e40af;

  /* --- Color: Hero (always dark, not affected by dark-mode media query) --- */
  --color-hero-bg:      #0f172a;
  --color-hero-surface: #1e293b;
  --color-hero-text:    #f8fafc;
  --color-hero-secondary:#94a3b8;
  --color-hero-accent:  #60a5fa;
  --color-hero-border:  rgba(255, 255, 255, 0.08);

  /* --- Typography --- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, "Courier New", monospace;

  /* --- Type scale --- */
  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  1.875rem;  /* 30px */
  --text-4xl:  2.25rem;   /* 36px */
  --text-5xl:  3rem;      /* 48px */
  --text-6xl:  3.75rem;   /* 60px */
  --text-7xl:  4.5rem;    /* 72px */

  /* --- Spacing scale (8px base) --- */
  --space-1:  0.25rem;  /*  4px */
  --space-2:  0.5rem;   /*  8px */
  --space-3:  0.75rem;  /* 12px */
  --space-4:  1rem;     /* 16px */
  --space-5:  1.25rem;  /* 20px */
  --space-6:  1.5rem;   /* 24px */
  --space-8:  2rem;     /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* --- Border radius --- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.06);

  /* --- Transitions --- */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* --- Layout --- */
  --container-max: 1200px;
  --container-padding: clamp(1rem, 4vw, 1.5rem);
  --nav-height: 68px;
  --section-padding: clamp(var(--space-16), 8vw, var(--space-24));
}

/* =============================================================================
   2. BASE RESET & TYPOGRAPHY
   ============================================================================= */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Anchor offset for sticky nav */
section[id], div[id] {
  scroll-margin-top: var(--nav-height);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

p { color: var(--color-text-secondary); }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-accent-hover); text-decoration: underline; }

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

ul, ol { list-style: none; }

button, input, textarea, select {
  font: inherit;
}

/* Focus styles — accessible, custom */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* =============================================================================
   3. LAYOUT UTILITIES
   ============================================================================= */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section-header {
  max-width: 680px;
  margin-bottom: var(--space-12);
}

.section-header.centered {
  text-align: center;
  margin-inline: auto;
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* =============================================================================
   4. BUTTONS
   ============================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast), box-shadow var(--transition-fast),
              transform var(--transition-fast);
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
  box-shadow: 0 4px 16px rgba(29, 78, 216, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover {
  background: var(--color-bg-subtle);
  border-color: var(--color-text-secondary);
  color: var(--color-text);
}

/* Hero variants */
.btn-hero-primary {
  background: var(--color-hero-accent);
  color: var(--color-hero-bg);
  border-color: var(--color-hero-accent);
  font-size: var(--text-base);
  padding: 0.75rem 1.75rem;
}
.btn-hero-primary:hover {
  background: #93c5fd;
  border-color: #93c5fd;
  color: var(--color-hero-bg);
  box-shadow: 0 4px 24px rgba(96, 165, 250, 0.4);
}

.btn-hero-ghost {
  background: transparent;
  color: var(--color-hero-text);
  border-color: var(--color-hero-border);
  font-size: var(--text-base);
  padding: 0.75rem 1.75rem;
}
.btn-hero-ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.25);
  color: var(--color-hero-text);
}

/* Dark section variant */
.btn-dark-primary {
  background: var(--color-hero-accent);
  color: var(--color-hero-bg);
  border-color: var(--color-hero-accent);
  font-size: var(--text-base);
  padding: 0.75rem 1.75rem;
}
.btn-dark-primary:hover {
  background: #93c5fd;
  border-color: #93c5fd;
  color: var(--color-hero-bg);
  box-shadow: 0 4px 24px rgba(96, 165, 250, 0.4);
}

/* =============================================================================
   5. NAVIGATION
   ============================================================================= */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  /* Starts transparent on hero section */
  background: transparent;
  transition: background var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
}

/* Scrolled state — becomes opaque */
.nav-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand / Logo */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-hero-text);
  transition: color var(--transition-base), opacity var(--transition-fast);
}
.brand:hover { opacity: 0.85; text-decoration: none; color: var(--color-hero-text); }
.nav-header.scrolled .brand { color: var(--color-text); }
.nav-header.scrolled .brand:hover { color: var(--color-text); }

.logo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
}

.brand-name {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* Nav links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  transition: color var(--transition-fast);
  padding: var(--space-2) 0;
}
.nav-link:hover { color: #fff; text-decoration: none; }
.nav-header.scrolled .nav-link { color: var(--color-text-secondary); }
.nav-header.scrolled .nav-link:hover { color: var(--color-text); }

/* Nav CTA */
.nav-cta {
  font-size: var(--text-sm);
  padding: 0.5rem 1rem;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-hero-text);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-fast), background var(--transition-base);
}
.nav-header.scrolled .nav-toggle span { background: var(--color-text); }
.nav-header.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-header.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-header.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================================================
   6. HERO SECTION
   ============================================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background-color: var(--color-hero-bg);
  overflow: hidden;
  padding: calc(var(--nav-height) + var(--space-16)) var(--container-padding) var(--space-24);
}

/* Subtle dot grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

/* Ambient glow effects */
.hero-glow-1, .hero-glow-2 {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: hero-pulse 10s ease-in-out infinite;
}
.hero-glow-1 {
  width: 600px;
  height: 600px;
  top: -100px;
  left: -150px;
  background: radial-gradient(circle, rgba(29, 78, 216, 0.18) 0%, transparent 70%);
}
.hero-glow-2 {
  width: 500px;
  height: 500px;
  bottom: -100px;
  right: -100px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.12) 0%, transparent 70%);
  animation-delay: -5s;
}

@keyframes hero-pulse {
  0%, 100% { opacity: 0.7; }
  50%       { opacity: 1;   }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-hero-accent);
  margin-bottom: var(--space-6);
  border: 1px solid rgba(96, 165, 250, 0.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: rgba(96, 165, 250, 0.06);
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-hero-accent);
  animation: hero-pulse 2.5s ease-in-out infinite;
}

.hero-headline {
  font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl));
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--color-hero-text);
  margin-bottom: var(--space-6);
}

.hero-headline em {
  font-style: normal;
  color: var(--color-hero-accent);
}

.hero-subheadline {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  color: var(--color-hero-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-10);
  line-height: 1.7;
}

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

/* Proof cue below CTAs */
.hero-proof {
  margin-top: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.hero-proof-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-hero-secondary);
}

.hero-proof-item::before {
  content: '✓';
  font-size: var(--text-xs);
  color: var(--color-hero-accent);
  font-weight: 700;
}

/* =============================================================================
   7. TRUST SIGNALS SECTION
   ============================================================================= */
.trust {
  padding: var(--section-padding) var(--container-padding);
  border-bottom: 1px solid var(--color-border);
}

.trust-disclaimer {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
}

.trust-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.trust-metric {
  text-align: center;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-subtle);
}

.trust-metric-value {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  display: block;
  margin-bottom: var(--space-2);
}

.trust-metric-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.trust-metric-note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Logo placeholders */
.trust-logos-label {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.trust-logo-placeholder {
  width: 140px;
  height: 44px;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  background: var(--color-bg-subtle);
}

/* =============================================================================
   8. CAPABILITIES SECTION
   ============================================================================= */
.capabilities {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg-subtle);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.capability-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-base), box-shadow var(--transition-base),
              transform var(--transition-base);
}
.capability-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.capability-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

.capability-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color:  var(--color-accent);
}

.capability-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.capability-bullets {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.capability-bullet {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.capability-bullet::before {
  content: '→';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* =============================================================================
   9. SERVICES SECTION
   ============================================================================= */
.services {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-item {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.service-item:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm);
}

.service-item-title {
  font-size: var(--text-base);
  font-weight: 700;
  color:  var(--color-accent);
  margin-bottom: var(--space-3);
}

.service-item-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* =============================================================================
   10. HOW WE WORK SECTION
   ============================================================================= */
.how-we-work {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

/* Connecting line between steps */
.process-grid::before {
  content: '';
  position: absolute;
  top: 36px; /* aligned with step number center */
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 1px;
  background: linear-gradient(to right,
    var(--color-border),
    var(--color-accent),
    var(--color-accent),
    var(--color-border)
  );
  opacity: 0.5;
}

.process-step {
  padding: 0 var(--space-6) var(--space-8);
  position: relative;
}

.process-step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
  background: var(--color-bg);
}

.process-step-timeframe {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.process-step-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color:  var(--color-accent);
}

.process-step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* =============================================================================
   10. PHILOSOPHY SECTION
   ============================================================================= */
.philosophy {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg-subtle);
}

.philosophy-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  align-items: start;
}

.philosophy-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.philosophy-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
}
.philosophy-item:first-child { border-top: 1px solid var(--color-border); }

.philosophy-content { flex: 1; }

.philosophy-principle {
  font-size: var(--text-lg);
  font-weight: 700;
  color:  var(--color-accent);
  margin-bottom: var(--space-2);
}

.philosophy-detail {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* On tablet/mobile, stack the header above the list */
@media (max-width: 1024px) {
  .philosophy-inner {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

/* =============================================================================
   11. WORK / PRODUCTS SECTION
   ============================================================================= */
.work {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg-subtle);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.work-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), box-shadow var(--transition-base),
              transform var(--transition-base);
  position: relative;
  overflow: hidden;
}
.work-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}

.work-card-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.work-card-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color:  var(--color-accent);
  margin-bottom: var(--space-3);
}

.work-card-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-6);
}

.work-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.work-card-stack {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.work-card-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
}
.work-card:hover .work-card-link { gap: var(--space-2); }

/* Placeholder card variant */
.work-card.placeholder {
  border-style: dashed;
  background: var(--color-bg-subtle);
}
.work-card.placeholder .work-card-title {
  color: var(--color-text-muted);
}
.work-card.placeholder .work-card-desc {
  color: var(--color-text-muted);
}

/* =============================================================================
   11. WHAT YOU GET SECTION
   ============================================================================= */
.what-you-get {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg);
}

.delivery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.delivery-item {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-base);
}
.delivery-item:hover { border-color: var(--color-border-strong); }

.delivery-icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  letter-spacing: 0;
}

.delivery-title {
  font-size: var(--text-base);
  font-weight: 700;
  color:  var(--color-accent);
  margin-bottom: var(--space-2);
}

.delivery-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* =============================================================================
   12. FAQ SECTION
   ============================================================================= */
.faq {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg-subtle);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item:first-child { border-top: 1px solid var(--color-border); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition-fast);
}
.faq-question:hover { color: var(--color-accent); }

.faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: transform var(--transition-base), border-color var(--transition-fast),
              color var(--transition-fast);
}
.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}
.faq-item.open .faq-answer { max-height: 400px; }

.faq-answer-inner {
  padding-bottom: var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* =============================================================================
   13. CONTACT / FINAL CTA SECTION
   ============================================================================= */
.contact {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-hero-bg);
  position: relative;
  overflow: hidden;
}

/* Reuse ambient glow */
.contact::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(29, 78, 216, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.contact-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-left .section-label { color: var(--color-hero-accent); }

.contact-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-hero-text);
  margin-bottom: var(--space-4);
}

.contact-subtitle {
  font-size: var(--text-lg);
  color: var(--color-hero-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-email-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-hero-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.contact-email-link:hover { color: var(--color-hero-text); text-decoration: none; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-hero-secondary);
}

.form-input,
.form-textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-hero-border);
  border-radius: var(--radius-md);
  padding: 0.625rem 0.875rem;
  font-size: var(--text-base);
  color: var(--color-hero-text);
  transition: border-color var(--transition-fast), background var(--transition-fast);
  width: 100%;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(148, 163, 184, 0.5);
}
.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-hero-accent);
  background: rgba(255,255,255,0.08);
}

.form-textarea { resize: vertical; min-height: 100px; }

.form-submit {
  align-self: flex-start;
}

/* =============================================================================
   14. FOOTER
   ============================================================================= */
.site-footer {
  background: var(--color-hero-bg);
  border-top: 1px solid var(--color-hero-border);
  padding: var(--space-8) var(--container-padding);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.footer-brand-name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-hero-text);
  letter-spacing: -0.02em;
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-hero-secondary);
  margin: 0;
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: rgba(148, 163, 184, 0.5);
}

/* =============================================================================
   15. SCROLL REVEAL ANIMATIONS
   ============================================================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for children */
.reveal-stagger > * { opacity: 0; transform: translateY(20px); }
.reveal-stagger.in-view > *:nth-child(1) { animation: reveal-up 0.55s 0.05s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.reveal-stagger.in-view > *:nth-child(2) { animation: reveal-up 0.55s 0.12s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.reveal-stagger.in-view > *:nth-child(3) { animation: reveal-up 0.55s 0.19s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.reveal-stagger.in-view > *:nth-child(4) { animation: reveal-up 0.55s 0.26s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.reveal-stagger.in-view > *:nth-child(5) { animation: reveal-up 0.55s 0.33s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.reveal-stagger.in-view > *:nth-child(6) { animation: reveal-up 0.55s 0.40s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

@keyframes reveal-up {
  to { opacity: 1; transform: translateY(0); }
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > *, .hero-glow-1, .hero-glow-2, .hero-eyebrow::before {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }
}

/* =============================================================================
   16. DARK MODE
   ============================================================================= */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:             #0a0a0a;
    --color-bg-subtle:      #111111;
    --color-bg-muted:       #1a1a1a;
    --color-border:         #2a2a2a;
    --color-border-strong:  #3a3a3a;
    --color-text:           #f0f0f0;
    --color-text-secondary: #a0a0a0;
    --color-text-muted:     #6a6a6a;
    --color-accent:         #60a5fa;
    --color-accent-hover:   #93c5fd;
    --color-accent-subtle:  #1e3a5f;
    --color-accent-text:    #93c5fd;
  }

  .nav-header.scrolled {
    background: rgba(10, 10, 10, 0.92);
    border-bottom-color: var(--color-border);
  }

  .btn-ghost {
    border-color: var(--color-border);
    color: var(--color-text);
  }
  .btn-ghost:hover {
    background: var(--color-bg-muted);
    border-color: var(--color-border-strong);
  }

  .trust-logo-placeholder {
    border-color: var(--color-border);
    background: var(--color-bg-subtle);
  }

  .form-input, .form-textarea {
    background: rgba(255,255,255,0.03);
  }
}

/* =============================================================================
   17. RESPONSIVE BREAKPOINTS
   ============================================================================= */

/* --- Tablet and below (max 1024px) --- */
@media (max-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
  .process-grid::before { display: none; }
  .process-step { padding: 0 0 0; }

  .delivery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

/* --- Mobile (max 768px) --- */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-hero-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    z-index: 99;
  }

  .nav-header.nav-open .nav-menu { display: flex; }

  .nav-link {
    font-size: var(--text-2xl);
    color: var(--color-hero-secondary);
  }
  .nav-link:hover { color: var(--color-hero-text); }

  .nav-cta.btn {
    font-size: var(--text-xl);
    padding: 0.875rem 2rem;
  }

  /* Trust */
  .trust-metrics { grid-template-columns: 1fr; }

  /* Capabilities */
  .capabilities-grid { grid-template-columns: 1fr; }

  /* Work grid */
  .work-grid { grid-template-columns: 1fr; }

  /* Process */
  .process-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  /* Delivery */
  .delivery-grid {
    grid-template-columns: 1fr;
  }

  /* Contact form row */
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* --- Small mobile (max 480px) --- */
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-proof { flex-direction: column; gap: var(--space-3); }
  .trust-logos { gap: var(--space-4); }
}