/* ==========================================================================
   EchoAgent — styles.css
   ========================================================================== */

/* 1. Custom Properties
   ========================================================================== */

:root {
  --bg-primary:    #01081A;
  --bg-secondary:  #000000;
  --bg-light:      #FFFFFF;
  --bg-subtle:     #EEF2FB;
  --text-primary:  #01081A;
  --text-secondary:#5A6478;
  --text-light:    #FFFFFF;
  --text-muted:    #8A93A8;
  --accent:        #4B7AF0;
  --accent-light:  #7A9CF5;
  --accent-lighter:#E8EFFE;
  --border:        #E5E5E5;
  --border-dark:   rgba(255,255,255,0.1);

  --font: 'Space Grotesk', sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  2rem;
  --text-4xl:  2.5rem;
  --text-5xl:  3.25rem;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 5rem;
  --space-3xl: 7.5rem;

  --container:        1200px;
  --container-narrow: 780px;
  --radius-sm:   5px;
  --radius:      8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  --transition:      200ms ease;
  --transition-slow: 300ms ease;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow:    0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}

/* 2. Reset & Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a        { color: inherit; text-decoration: none; }
ul, ol   { list-style: none; }
button   { cursor: pointer; font: inherit; border: none; background: none; }

/* 3. Accessibility
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--text-light);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }

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

/* 4. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-4xl); font-weight: 700; }
h3 { font-size: var(--text-2xl); font-weight: 600; }
h4 { font-size: var(--text-xl);  font-weight: 600; }

p { line-height: 1.7; }

.eyebrow {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* 5. Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--narrow { max-width: var(--container-narrow); }

.section      { padding: var(--space-3xl) 0; }
.section--md  { padding: var(--space-2xl) 0; }
.section--sm  { padding: var(--space-xl)  0; }

.section--dark   { background: var(--bg-primary);   color: var(--text-light); }
.section--deeper { background: var(--bg-secondary); color: var(--text-light); }
.section--subtle { background: var(--bg-subtle); }

.section-header              { margin-bottom: var(--space-2xl); }
.section-header--centered    {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-2xl);
}
.section-header p {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: var(--text-lg);
}
.section--dark  .section-header p,
.section--deeper .section-header p { color: rgba(255,255,255,0.55); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr;           gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr);     gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr);     gap: var(--space-lg); }

/* 6. Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.btn--primary {
  background: var(--accent);
  color: var(--text-light);
  border: 2px solid var(--accent);
}
.btn--primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(75,122,240,0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}
.btn--ghost:hover {
  background: var(--accent-lighter);
  transform: translateY(-1px);
}

.btn--ghost-light {
  background: transparent;
  color: var(--text-light);
  border: 2px solid rgba(255,255,255,0.3);
}
.btn--ghost-light:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.55);
  transform: translateY(-1px);
}

.btn--lg { padding: 1rem 2rem; font-size: var(--text-lg); }
.btn--sm { padding: 0.5rem 1rem; font-size: var(--text-sm); }
.btn--full { width: 100%; justify-content: center; }

/* 7. Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled {
  border-color: rgba(255,255,255,0.1);
  box-shadow: 0 1px 12px rgba(0,0,0,0.25);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(1,8,26,0.97);
}
.site-header .logo-wordmark { color: var(--text-light); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-lg);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
}
.site-logo img { width: 34px; height: 34px; }
.logo-wordmark {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.site-nav { display: flex; align-items: center; gap: 0.125rem; }
.site-nav a {
  padding: 0.5rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--text-light);
  background: rgba(255,255,255,0.08);
}

.header-cta { flex-shrink: 0; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover { background: var(--accent-lighter); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: all var(--transition-slow);
  transform-origin: center;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 0.5rem 1.5rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  background: var(--bg-primary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.mobile-nav.is-open { max-height: 500px; }
.mobile-nav a {
  padding: 0.875rem 0.5rem;
  font-size: var(--text-base);
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: color var(--transition);
}
.mobile-nav a:last-of-type { border-bottom: none; }
.mobile-nav a:hover,
.mobile-nav a.active { color: var(--text-light); }
.mobile-nav .btn { margin-top: 1rem; justify-content: center; }

/* 8. Hero
   ========================================================================== */

.hero {
  background: var(--bg-primary);
  color: var(--text-light);
  padding: 6.5rem 0 5.5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 68% 50%, rgba(75,122,240,0.13) 0%, transparent 68%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: rgba(75,122,240,0.15);
  border: 1px solid rgba(75,122,240,0.3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 1.75rem;
}
.hero-badge-dot {
  width: 7px;
  height: 7px;
  background: var(--accent-light);
  border-radius: 50%;
  flex-shrink: 0;
  animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(0.85); }
}

.hero h1 {
  font-size: clamp(2.75rem, 4.5vw, 4rem);
  color: var(--text-light);
  margin-bottom: 1.25rem;
  line-height: 1.1;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent-light);
}

.hero-subheadline {
  font-size: var(--text-lg);
  line-height: 1.75;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2.5rem;
  max-width: 520px;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual-inner {
  position: relative;
  width: 340px;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(75,122,240,0.18);
  animation: pulse-ring 4s ease-in-out infinite;
}
.hero-ring:nth-child(1) { width: 100%; height: 100%; animation-delay: 0s; }
.hero-ring:nth-child(2) { width: 73%; height: 73%; border-color: rgba(75,122,240,0.12); animation-delay: 0.5s; }
.hero-ring:nth-child(3) { width: 48%; height: 48%; border-color: rgba(75,122,240,0.08); animation-delay: 1s; }

@keyframes pulse-ring {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.02); }
}

.hero-robot-wrap {
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 32px rgba(75,122,240,0.35));
}
.hero-robot-wrap img { width: 160px; height: 160px; }

/* 9. Stats Strip
   ========================================================================== */

.stats-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-light);
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(3,1fr);
}
.stat-item {
  padding: 2.25rem var(--space-lg);
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }

.stat-number {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.375rem;
}
.stat-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

/* 10. Cards
   ========================================================================== */

.card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(75,122,240,0.2);
  transform: translateY(-2px);
}

.card--dark {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.08);
}
.card--dark:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(75,122,240,0.25);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}
.card--dark h3 { color: var(--text-light); }
.card--dark p  { color: rgba(255,255,255,0.55); }

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-lighter);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  flex-shrink: 0;
}
.card-icon svg { width: 22px; height: 22px; }
.card--dark .card-icon { background: rgba(75,122,240,0.15); }

.card h3 { margin-bottom: 0.625rem; }
.card p  { color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.65; }
.grid-4 .card h3 { font-size: var(--text-xl); }

.card-metric {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: auto;
  padding: 0.375rem 0.875rem;
  background: var(--accent-lighter);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
  white-space: nowrap;
  align-self: flex-start;
}
.card--dark .card-metric {
  background: rgba(75,122,240,0.15);
  color: var(--accent-light);
}

/* 11. Process Steps
   ========================================================================== */

.process-steps {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: var(--space-lg);
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 27px;
  left: calc(50% / 3 + 28px);
  right: calc(50% / 3 + 28px);
  height: 1px;
  background: var(--border);
  pointer-events: none;
}
.section--dark .process-steps::before { background: var(--border-dark); }

.process-step { text-align: center; padding: 0 var(--space-sm); }

.step-number {
  width: 54px;
  height: 54px;
  background: var(--accent-lighter);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 700;
  margin: 0 auto 1.5rem;
  position: relative;
  z-index: 1;
  border: 4px solid var(--bg-light);
}
.section--dark .step-number {
  background: rgba(75,122,240,0.2);
  color: var(--accent-light);
  border-color: var(--bg-primary);
}
.process-step h3 { margin-bottom: 0.625rem; }
.process-step p  { color: var(--text-secondary); font-size: var(--text-sm); }
.section--dark .process-step p { color: rgba(255,255,255,0.5); }

/* 12. CTA Banner
   ========================================================================== */

.cta-banner {
  background: var(--bg-primary);
  color: var(--text-light);
  text-align: center;
  padding: var(--space-3xl) 0;
}
.cta-banner h2  { margin-bottom: 1rem; }
.cta-banner p   {
  color: rgba(255,255,255,0.6);
  font-size: var(--text-lg);
  margin-bottom: 2.5rem;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.cta-meta    { margin-top: 1.5rem; font-size: var(--text-sm); color: rgba(255,255,255,0.4); }

/* 13. Page Hero
   ========================================================================== */

.page-hero {
  background: var(--bg-primary);
  color: var(--text-light);
  padding: 5rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(75,122,240,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-inner { position: relative; }
.page-hero h1   { margin-bottom: 1.25rem; }
.page-hero p    {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.6);
  max-width: 580px;
  margin: 0 auto;
}

/* 14. Case Studies
   ========================================================================== */

.case-study-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.case-study-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.case-study-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--accent-lighter);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  align-self: flex-start;
}

.case-study-company { font-size: var(--text-xl); font-weight: 600; margin-bottom: 0.2rem; }
.case-study-industry {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.case-section { margin-bottom: 0.875rem; }
.case-section-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}
.case-section p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.case-outcome {
  margin-top: auto;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
}
.outcome-stat {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  background: var(--accent-lighter);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
}

/* 15. Team Cards
   ========================================================================== */

.team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: var(--space-lg); }

.team-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.team-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

.team-avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--accent-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--accent);
  border: 3px solid rgba(75,122,240,0.15);
}
.team-card h3    { margin-bottom: 0.25rem; }
.team-card .role { font-size: var(--text-sm); font-weight: 600; color: var(--accent); margin-bottom: 0.875rem; }
.team-card .bio  { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.65; }

.team-photo {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1.25rem;
  border: 3px solid rgba(75,122,240,0.15);
  display: block;
}
.echo-avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  border: 3px solid rgba(75,122,240,0.15);
  padding: 12px;
}
.echo-avatar img { width: 100%; height: 100%; }
.team-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; margin-top: 1rem; }
.tag {
  padding: 0.25rem 0.75rem;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  border: 1px solid var(--border);
}

/* 16. Contact
   ========================================================================== */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info h2 { margin-bottom: 1rem; }
.contact-info > p { color: var(--text-secondary); margin-bottom: var(--space-lg); font-size: var(--text-lg); line-height: 1.7; }

.contact-detail {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.contact-detail:last-of-type { border-bottom: none; }

.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-lighter);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.contact-detail-text strong { display: block; font-weight: 600; margin-bottom: 0.1rem; }
.contact-detail-text a, .contact-detail-text span {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--transition);
}
.contact-detail-text a:hover { color: var(--accent); }

.contact-form-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}
.contact-form-card h3 { margin-bottom: 0.5rem; }
.contact-form-card > p { font-size: var(--text-sm); color: var(--text-secondary); margin-bottom: var(--space-lg); }

.form-group { margin-bottom: var(--space-md); }
.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(75,122,240,0.1);
}
.form-group textarea { height: 120px; resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* 17. Pain Points
   ========================================================================== */

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

.pain-point-category {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.pain-point-category h3 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: var(--text-lg);
}

.pp-icon {
  width: 38px;
  height: 38px;
  background: var(--accent-lighter);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.pain-point-list { display: flex; flex-direction: column; gap: 0.5rem; }
.pain-point-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.55;
}
.pain-point-item::before {
  content: '→';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

/* 18. Positioning
   ========================================================================== */

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

.pos-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}
.pos-card.is-us {
  background: var(--bg-primary);
  border-color: transparent;
  color: var(--text-light);
  position: relative;
  transform: scale(1.02);
}
.pos-card.is-us::before {
  content: 'Our approach';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 0.875rem;
  background: var(--accent);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.pos-verdict {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}
.pos-card.is-no  .pos-verdict { background: #FEE2E2; color: #DC2626; }
.pos-card.is-us  .pos-verdict { background: rgba(75,122,240,0.2); color: var(--accent-light); }

.pos-card h3 { margin-bottom: 0.5rem; }
.pos-card.is-us h3 { color: var(--accent-light); }

.pos-card ul { text-align: left; margin-top: 0.75rem; }
.pos-card li {
  display: flex;
  gap: 0.5rem;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
}
.pos-card.is-us li { color: rgba(255,255,255,0.6); border-color: rgba(255,255,255,0.08); }
.pos-card li:last-child { border-bottom: none; }
.pos-card li::before { content: '✕'; color: #DC2626; flex-shrink: 0; font-weight: 700; }
.pos-card.is-no li::before { content: '✕'; }
.pos-card.is-us li::before { content: '✓'; color: var(--accent-light); }

/* 19. Image Placeholders
   ========================================================================== */

.img-placeholder {
  background: var(--bg-subtle);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl);
  color: var(--text-muted);
  min-height: 200px;
  gap: 0.75rem;
}
.img-placeholder svg { width: 40px; height: 40px; opacity: 0.4; }
.img-placeholder span { font-size: var(--text-sm); font-weight: 500; }

/* 20. Footer
   ========================================================================== */

.site-footer {
  background: var(--bg-secondary);
  color: rgba(255,255,255,0.5);
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand .site-logo { color: var(--text-light); margin-bottom: 1rem; }
.footer-brand p { font-size: var(--text-sm); line-height: 1.7; max-width: 240px; }
.footer-brand .footer-email {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: var(--text-sm);
  color: var(--accent-light);
  transition: color var(--transition);
}
.footer-brand .footer-email:hover { color: var(--text-light); }

.footer-col h4 {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 1rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.625rem; }
.footer-col a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.45);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--text-light); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-lg);
  font-size: var(--text-xs);
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { color: rgba(255,255,255,0.3); transition: color var(--transition); }
.footer-legal a:hover { color: rgba(255,255,255,0.65); }

/* 21. Animations
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.is-visible { opacity: 1; transform: translateY(0); }

.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.stagger-children.is-visible > *             { opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(1){ transition-delay: 0s;    }
.stagger-children.is-visible > *:nth-child(2){ transition-delay: 0.1s;  }
.stagger-children.is-visible > *:nth-child(3){ transition-delay: 0.2s;  }
.stagger-children.is-visible > *:nth-child(4){ transition-delay: 0.3s;  }

/* 22. Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  :root { --space-3xl: 5rem; }

  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }

  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 2.5rem; }
  .hero-subheadline { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-visual-inner { width: 240px; height: 240px; }
  .hero-robot-wrap img { width: 110px; height: 110px; }

  .grid-4    { grid-template-columns: repeat(2,1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .contact-layout { grid-template-columns: 1fr; }
  .positioning-grid { grid-template-columns: 1fr; }
  .pos-card.is-us { transform: none; }
  .pos-card.is-us::before { position: static; display: inline-block; margin-bottom: 0.75rem; transform: none; left: auto; top: auto; }
}

@media (max-width: 640px) {
  :root { --space-3xl: 3.5rem; --space-2xl: 2.5rem; }

  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.875rem; }
  h3 { font-size: 1.25rem; }

  .container { padding: 0 1.25rem; }

  .site-nav, .header-cta { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: flex; }

  .hero { padding: 4rem 0 3rem; }
  .hero-badge { margin-left: auto; margin-right: auto; }

  .stats-inner { grid-template-columns: 1fr; }
  .stat-item { border-right: none !important; border-bottom: 1px solid var(--border); }
  .stat-item:last-child { border-bottom: none; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .process-steps::before { display: none; }
  .pain-points-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-card { padding: var(--space-lg); }
}

/* 23. Card icon colour modifiers
   ========================================================================== */

.card-icon--blue   { background: var(--accent-lighter); color: var(--accent); }
.card-icon--green  { background: #E8F5E9; color: #2E7D32; }
.card-icon--purple { background: #EDE7F6; color: #6A1B9A; }
.card-icon--orange { background: #FFF3E0; color: #E65100; }

.card--dark .card-icon--green  { background: rgba(46,125,50,0.15);  color: #81C784; }
.card--dark .card-icon--purple { background: rgba(106,27,154,0.15); color: #CE93D8; }
.card--dark .card-icon--orange { background: rgba(230,81,0,0.15);   color: #FFAB91; }

/* 24. Problem / Solution extracted classes
   ========================================================================== */

.problem-solution-grid { align-items: center; gap: 4rem; }

.solution-checklist      { display: flex; flex-direction: column; gap: 0.875rem; }
.solution-checklist-item { display: flex; gap: 0.75rem; align-items: flex-start; }
.solution-checklist-icon {
  width: 24px; height: 24px;
  background: var(--accent-lighter);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 2px;
}
.solution-checklist-item p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* 25. Testimonial Cards
   ========================================================================== */

.testimonial-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: left;
}
.testimonial-quote {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-md);
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--accent-lighter);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: var(--text-sm);
  flex-shrink: 0;
}
.testimonial-name  { font-weight: 600; font-size: var(--text-sm); }
.testimonial-role  { font-size: var(--text-xs); color: var(--text-muted); }

/* Visually hidden but screen-reader accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}