/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #000;
  --surface: #0d0d0d;
  --border: #1a1a1a;
  --text: #fff;
  --text-muted: #555;
  --text-secondary: #888;
  --radius: 8px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* === Typography === */
h1, h2, h3 {
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.1rem; font-weight: 500; letter-spacing: -0.01em; }

/* === Utilities === */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
}

.section-header {
  margin-bottom: 64px;
}

.section-sub {
  color: var(--text-secondary);
  max-width: 560px;
  margin-top: 14px;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: inherit;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: #fff;
  color: #000;
}

.btn-primary:hover {
  background: #e8e8e8;
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  background: transparent;
}

.btn-outline:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost {
  color: rgba(255, 255, 255, 0.6);
  background: transparent;
  padding-left: 0;
  padding-right: 0;
}

.btn-ghost:hover {
  color: #fff;
}

/* === Fade-in Animation === */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* === Nav === */
nav#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.4s ease, border-bottom 0.4s ease, padding 0.3s ease;
}

nav#nav.scrolled {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 0;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 28px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
  margin-left: 48px;
  flex: 1;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: #fff;
}

nav#nav .btn-outline {
  margin-left: auto;
  padding: 9px 20px;
  font-size: 0.825rem;
}

/* === Mobile Menu Button === */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  flex-shrink: 0;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}

nav.menu-open .mobile-menu-btn span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
nav.menu-open .mobile-menu-btn span:nth-child(2) {
  opacity: 0;
}
nav.menu-open .mobile-menu-btn span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* === Mobile Nav Dropdown === */
.mobile-nav {
  display: none;
}

/* === Hero === */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#starfield {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  padding: 0 24px;
}

.eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 28px;
  display: block;
}

.hero h1 {
  margin-bottom: 28px;
}

.dim-text {
  color: rgba(255, 255, 255, 0.45);
}

.hero-sub {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto 44px;
  line-height: 1.75;
}

.hero-ctas {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}


/* === Services === */
.services {
  padding: 128px 0;
  border-top: 1px solid var(--border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px 28px;
  transition: border-color var(--transition), background var(--transition);
}

.service-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  background: #111;
}

.service-icon {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.service-card h3 {
  margin-bottom: 12px;
}

.service-card > p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 24px;
  line-height: 1.7;
}

.service-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.service-card li {
  color: var(--text-muted);
  font-size: 0.8rem;
  padding-left: 16px;
  position: relative;
}

.service-card li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: #2a2a2a;
}

/* === Process === */
.process {
  padding: 128px 0;
  border-top: 1px solid var(--border);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}

.process-steps::after {
  content: '';
  position: absolute;
  top: 19px;
  left: calc(10% + 10px);
  right: calc(10% + 10px);
  height: 1px;
  background: var(--border);
  pointer-events: none;
}

.step {
  padding: 0 12px;
}

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  background: var(--bg);
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
}

.step-body h3 {
  margin-bottom: 10px;
}

.step-body p {
  color: var(--text-muted);
  font-size: 0.825rem;
  line-height: 1.65;
}

/* === CTA Banner === */
.cta-banner {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-inner h2 {
  max-width: 520px;
}

/* === Contact === */
.contact {
  padding: 128px 0;
  border-top: 1px solid var(--border);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contact-text h2 {
  margin-bottom: 16px;
}

.contact-text > p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 340px;
}

.contact-details {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.contact-detail svg {
  flex: 0 0 auto;
  color: var(--text-muted);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.contact-form input,
.contact-form textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: #fff;
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
  resize: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(255, 255, 255, 0.25);
}

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

.contact-form .btn-primary {
  align-self: flex-start;
  cursor: pointer;
}

.form-status {
  font-size: 0.825rem;
  color: var(--text-muted);
  min-height: 20px;
}

.form-status.success {
  color: rgba(255, 255, 255, 0.6);
}

/* === Footer === */
footer {
  padding: 64px 0 40px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer-logo .logo-img {
  height: 32px;
}

.footer-sub {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-nav {
  display: flex;
  gap: 28px;
  margin-top: 4px;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--text-secondary);
}

.footer-copy {
  color: #2a2a2a;
  font-size: 0.75rem;
  margin-top: 12px;
}

/* === Responsive === */
@media (max-width: 960px) {
  .services-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-steps::after {
    display: none;
  }

  .step {
    display: flex;
    gap: 20px;
    padding: 0;
    margin-bottom: 36px;
  }

  .step:last-child {
    margin-bottom: 0;
  }

  .step-num {
    margin-bottom: 0;
    margin-top: 2px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }

  .contact-inner {
    grid-template-columns: 1fr;
    gap: 56px;
  }
}

@media (max-width: 700px) {
  .container {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  nav#nav > .nav-inner > .btn-outline {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-nav {
    display: block;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s ease;
    background: rgba(0, 0, 0, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid transparent;
  }

  nav.menu-open .mobile-nav {
    max-height: 420px;
    border-top-color: var(--border);
  }

  .mobile-nav ul {
    list-style: none;
    padding: 8px 20px 4px;
  }

  .mobile-nav ul li {
    border-bottom: 1px solid var(--border);
  }

  .mobile-nav ul li:last-child {
    border-bottom: none;
  }

  .mobile-nav ul li a {
    display: block;
    padding: 14px 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition);
  }

  .mobile-nav ul li a:hover {
    color: var(--text);
  }

  .mobile-nav-cta {
    display: inline-block;
    margin: 10px 20px 20px;
  }

  .nav-inner {
    padding: 0 20px;
  }

  .services,
  .process,
  .cta-banner,
  .contact {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 48px;
  }

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

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero-ctas .btn-ghost {
    padding: 0;
  }
}

/* ============================================================
   EXAMPLES SECTION
   ============================================================ */

#examples {
  padding: 128px 0;
  border-top: 1px solid var(--border);
}

.examples-grid {
  margin-top: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 860px;
}

/* Example Card */
.example-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 36px;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.example-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  background: #111;
}

.example-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.example-number {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  flex-shrink: 0;
}

.example-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.example-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
}

/* Flow Diagram */
.flow-diagram {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 24px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 28px;
  overflow-x: auto;
}

.flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 72px;
}

.flow-node-box {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  flex-shrink: 0;
  transition: border-color 0.25s ease;
}

.example-card:hover .flow-node-box {
  border-color: #2a2a2a;
}

.flow-node-label {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.4;
}

.flow-connector {
  display: flex;
  align-items: center;
  padding: 0 4px;
  flex-shrink: 0;
  margin-bottom: 20px;
}

/* Feature Tags */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  background: transparent;
  transition: border-color 0.2s ease;
}

.example-card:hover .tag {
  border-color: #2a2a2a;
}

/* Business Outcome */
.business-outcome {
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.outcome-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.business-outcome p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* Responsive — tablet */
@media (max-width: 960px) {
  .flow-diagram {
    padding: 20px 16px;
  }
}

/* Responsive — mobile */
@media (max-width: 700px) {
  #examples {
    padding: 80px 0;
  }

  .example-card {
    padding: 28px 22px;
  }

  .flow-diagram {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .flow-node {
    flex-direction: row;
    gap: 12px;
    flex: none;
    width: 100%;
  }

  .flow-node-label {
    text-align: left;
  }

  .flow-connector {
    padding: 4px 0 4px 16px;
    margin-bottom: 0;
    transform: rotate(90deg);
    transform-origin: left center;
    margin-left: 6px;
  }
}