/* ==========================================================================
   Hex AI Systems — hexaisystems.com
   Enterprise AI Consulting Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Reset + Custom Properties
   -------------------------------------------------------------------------- */

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
}

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

:root {
  /* Primary palette */
  --navy: #0f1b2d;
  --navy-mid: #162a45;
  --navy-light: #1e3a5f;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.1);

  /* Text */
  --text: #1a1a2e;
  --text-light: #4b5563;
  --text-muted: #9ca3af;
  --text-on-dark: #e5e7eb;
  --text-white: #ffffff;

  /* Backgrounds */
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --bg-dark: #0f1b2d;
  --bg-dark-card: rgba(255, 255, 255, 0.05);
  --bg-dark-card-hover: rgba(255, 255, 255, 0.08);

  /* Functional */
  --success: #059669;
  --error: #dc2626;
  --error-light: #fef2f2;
  --border: #e5e7eb;
  --border-dark: rgba(255, 255, 255, 0.1);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --content-width: 800px;

  /* Radii */
  --radius-sm: 4px;
  --radius-input: 6px;
  --radius-card: 10px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Header */
  --header-height: 72px;
}


/* --------------------------------------------------------------------------
   2. Header (sticky, logo left, nav right, mobile hamburger)
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo .logo-accent {
  color: var(--accent);
}

.nav-main {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-main a {
  color: var(--text-light);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-main a:hover,
.nav-main a.active {
  color: var(--text);
}

.nav-main a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
}

.nav-main a:hover::after,
.nav-main a.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  background: var(--accent);
  color: var(--text-white);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-input);
  transition: background var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
}

.nav-cta:hover {
  background: var(--accent-hover);
  color: var(--text-white);
  transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg);
  z-index: 999;
  padding: var(--space-lg) var(--space-md);
  flex-direction: column;
  gap: var(--space-sm);
  overflow-y: auto;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  color: var(--text);
  font-size: 1.125rem;
  font-weight: 500;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--border);
  min-height: 48px;
}

.mobile-nav a:hover {
  color: var(--accent);
}

.mobile-nav .nav-cta {
  margin-top: var(--space-sm);
  text-align: center;
  justify-content: center;
}


/* --------------------------------------------------------------------------
   3. Hero (dark navy gradient, 2-col desktop, form card right)
   -------------------------------------------------------------------------- */

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #0a1628 60%, #0d1f3c 100%);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  color: var(--text-white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: #93bbfc;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.1;
  margin-bottom: var(--space-md);
  letter-spacing: -0.025em;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-on-dark);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  max-width: 520px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-on-dark);
  font-weight: 500;
}

.trust-item .trust-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--success);
}

/* Hero form card */
.hero-form-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.hero-form-card .form-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.hero-form-card .form-subtitle {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: var(--space-md);
}


/* --------------------------------------------------------------------------
   4. Problem Section (light bg, 3 pain point cards)
   -------------------------------------------------------------------------- */

.section-problem {
  background: var(--bg-alt);
}

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

.problem-card {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.problem-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.problem-card .card-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50%;
  margin-bottom: var(--space-sm);
}

.problem-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--text-light);
  line-height: 1.6;
}


/* --------------------------------------------------------------------------
   5. Services (white bg, 6 cards in 3x2 grid, blue top border on hover)
   -------------------------------------------------------------------------- */

.section-services {
  background: var(--bg);
}

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

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.service-card .service-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: var(--radius-input);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  color: var(--accent);
}

.service-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--text-light);
  line-height: 1.6;
}


/* --------------------------------------------------------------------------
   6. Industries (dark navy bg, 4 cards)
   -------------------------------------------------------------------------- */

.section-industries {
  background: var(--bg-dark);
}

.section-industries .section-heading,
.section-industries .section-subheading {
  color: var(--text-white);
}

.section-industries .section-subheading {
  color: var(--text-on-dark);
}

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

.industry-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  text-align: center;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.industry-card:hover {
  background: var(--bg-dark-card-hover);
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-3px);
}

.industry-card .industry-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-sm);
  background: rgba(37, 99, 235, 0.12);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.industry-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.5rem;
}

.industry-card p {
  font-size: 0.875rem;
  color: var(--text-on-dark);
  line-height: 1.6;
}


/* --------------------------------------------------------------------------
   7. How We Work (light bg, 3 numbered steps with connecting line)
   -------------------------------------------------------------------------- */

.section-how-we-work {
  background: var(--bg-alt);
}

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

/* Connecting line behind steps */
.steps-container::before {
  content: '';
  position: absolute;
  top: 36px;
  left: calc(16.67% + 20px);
  right: calc(16.67% + 20px);
  height: 2px;
  background: var(--border);
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--bg);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 800;
  border-radius: 50%;
  margin-bottom: var(--space-md);
  position: relative;
}

.step h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.step p {
  font-size: 0.9375rem;
  color: var(--text-light);
  line-height: 1.6;
  max-width: 320px;
  margin: 0 auto;
}


/* --------------------------------------------------------------------------
   8. Results / Proof (white bg, 4 stat boxes)
   -------------------------------------------------------------------------- */

.section-results {
  background: var(--bg);
}

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

.stat-box {
  text-align: center;
  padding: var(--space-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  transition: box-shadow var(--transition-base);
}

.stat-box:hover {
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-light);
  margin-bottom: 0.25rem;
}

.stat-detail {
  font-size: 0.8125rem;
  color: var(--text-muted);
}


/* --------------------------------------------------------------------------
   9. About / Founder (light bg, text-based, clean)
   -------------------------------------------------------------------------- */

.section-about {
  background: var(--bg-alt);
}

.about-inner {
  max-width: var(--content-width);
  margin: 0 auto;
}

.about-inner h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.about-role {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.about-inner p {
  font-size: 1.0625rem;
  color: var(--text-light);
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}

.about-inner p:last-of-type {
  margin-bottom: 0;
}

.about-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.credential {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-light);
  background: var(--bg);
  padding: 0.5rem 0.875rem;
  border-radius: 100px;
  border: 1px solid var(--border);
}


/* --------------------------------------------------------------------------
   10. FAQ (white bg, accordion with details/summary)
   -------------------------------------------------------------------------- */

.section-faq {
  background: var(--bg);
}

.faq-list {
  max-width: var(--content-width);
  margin: 0 auto;
}

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

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

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  min-height: 48px;
  transition: color var(--transition-fast);
  gap: var(--space-sm);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::marker {
  display: none;
  content: '';
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text-muted);
  flex-shrink: 0;
  width: 24px;
  text-align: center;
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  content: '\2212';
}

.faq-answer {
  padding: 0 0 var(--space-md) 0;
  font-size: 0.9375rem;
  color: var(--text-light);
  line-height: 1.7;
}

.faq-answer p {
  margin-bottom: var(--space-sm);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}


/* --------------------------------------------------------------------------
   11. Final CTA (dark navy bg, centered text + button)
   -------------------------------------------------------------------------- */

.section-cta {
  background: linear-gradient(135deg, var(--navy) 0%, #0a1628 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.section-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.section-cta h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.section-cta p {
  font-size: 1.125rem;
  color: var(--text-on-dark);
  margin-bottom: var(--space-lg);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}


/* --------------------------------------------------------------------------
   12. Footer (dark bg, 3-column: logo+tagline, links, contact)
   -------------------------------------------------------------------------- */

.site-footer {
  background: #080f1a;
  padding: var(--space-3xl) 0 var(--space-lg) 0;
  color: var(--text-on-dark);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: var(--text-white);
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.footer-brand p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9375rem;
  padding: 0.3rem 0;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text-white);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.footer-contact-item a {
  display: inline;
  padding: 0;
}

.footer-bottom {
  padding-top: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: var(--space-md);
}

.footer-legal a {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-legal a:hover {
  color: var(--text-white);
}


/* --------------------------------------------------------------------------
   13. Form Styles
   -------------------------------------------------------------------------- */

.form-group {
  margin-bottom: var(--space-sm);
}

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

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.375rem;
}

label .required {
  color: var(--error);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="password"],
select,
textarea {
  display: block;
  width: 100%;
  padding: 0.75rem 0.875rem;
  font-size: 0.9375rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 48px;
  appearance: none;
  -webkit-appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 8.825a.5.5 0 01-.354-.146l-3.5-3.5a.5.5 0 11.708-.708L6 7.618l3.146-3.147a.5.5 0 11.708.708l-3.5 3.5A.5.5 0 016 8.825z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  background-size: 12px;
  padding-right: 2.5rem;
}

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.5;
}

/* Error states */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-error {
  display: none;
  font-size: 0.8125rem;
  color: var(--error);
  margin-top: 0.25rem;
  font-weight: 500;
}

.form-group.has-error .form-error {
  display: block;
}

/* Success states */
.form-group.is-valid input,
.form-group.is-valid select,
.form-group.is-valid textarea {
  border-color: var(--success);
}

/* Submit button */
.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: var(--accent);
  color: var(--text-white);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-input);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 52px;
  letter-spacing: 0.01em;
}

.btn-submit:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-submit:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-submit:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Loading state */
.btn-submit.is-loading {
  pointer-events: none;
  opacity: 0.8;
}

.btn-submit.is-loading::after {
  content: '';
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--text-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: 0.5rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Form helper text */
.form-hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Form confirmation */
.form-confirmation {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

/* Phone link styling */
.form-phone-note {
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.form-phone-note a {
  font-weight: 600;
  color: var(--accent);
}


/* --------------------------------------------------------------------------
   14. Honeypot Hidden Class
   -------------------------------------------------------------------------- */

.ohnohoney {
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
  height: 0;
  width: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}


/* --------------------------------------------------------------------------
   15. Utility Classes
   -------------------------------------------------------------------------- */

/* Containers */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Section spacing */
.section {
  padding: var(--space-3xl) 0;
}

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

.section-lg {
  padding: 5rem 0;
}

/* Section headings */
.section-heading {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-subheading {
  font-size: 1.0625rem;
  color: var(--text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl) auto;
  line-height: 1.6;
}

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  border-radius: var(--radius-input);
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 48px;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-white);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--text-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--text-white);
}

.btn-white {
  background: var(--bg);
  color: var(--accent);
}

.btn-white:hover {
  background: #f0f4ff;
  color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.0625rem;
  min-height: 56px;
}

/* Spacing helpers */
.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }


/* --------------------------------------------------------------------------
   16. Responsive (768px breakpoint)
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {

  :root {
    --header-height: 64px;
  }

  /* Header */
  .nav-main {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Hero */
  .hero {
    padding: var(--space-2xl) 0;
  }

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

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-form-card {
    max-width: 100%;
  }

  /* Problem */
  .problem-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  /* Industries */
  .industries-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

  /* Steps */
  .steps-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .steps-container::before {
    display: none;
  }

  /* Results */
  .results-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

  .stat-number {
    font-size: 2rem;
  }

  /* About */
  .about-credentials {
    gap: var(--space-xs);
  }

  /* CTA */
  .section-cta h2 {
    font-size: 1.75rem;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal {
    justify-content: center;
  }

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

  /* Section headings */
  .section-heading {
    font-size: 1.625rem;
  }

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

  .section-lg {
    padding: var(--space-3xl) 0;
  }
}

/* Small mobile */
@media (max-width: 480px) {

  .hero h1 {
    font-size: 1.75rem;
  }

  .industries-grid {
    grid-template-columns: 1fr;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .hero-trust {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .btn-lg {
    width: 100%;
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .hamburger,
  .mobile-nav,
  .section-cta,
  .hero-form-card {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  .hero {
    background: none !important;
    color: #000;
    padding: 1rem 0;
  }

  .hero h1,
  .hero-content {
    color: #000 !important;
  }
}