@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@700;800&family=IBM+Plex+Mono:wght@500&family=Inter:wght@400;600&display=swap');

/* ─── PropForge AI · Blueprint Forge ─── */
:root {
  --navy: #0B1220;
  --slate: #131C2E;
  --bone: #EFF1F4;
  --brass: #D2A24C;
  --steel: #4A7CA8;
  --ash: #838B96;
  --font-heading: 'Hanken Grotesk', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --max-width: 74rem;
  --header-h: 4.5rem;
  --radius: 2px;
  --transition: 0.25s ease;
}

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

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  background: var(--bone);
  color: var(--navy);
}

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

a {
  color: currentColor;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover { opacity: 0.85; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.12;
  margin: 0 0 1rem;
}

h1 { font-size: clamp(2.875rem, 6vw, 5.375rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.375rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 700; }

p { margin: 0 0 1rem; }
ul, ol { margin: 0 0 1rem; padding-left: 1.35rem; }

/* ─── Surface system ─── */
.surface-navy { background: #0B1220; color: #EFF1F4; }
.surface-bone { background: #EFF1F4; color: #0B1220; }
.surface-slate { background: #131C2E; color: #EFF1F4; }
.surface-brass { background: #D2A24C; color: #0B1220; }

.surface-navy a,
.surface-slate a { color: #EFF1F4; }
.surface-bone a { color: #0B1220; }
.surface-brass a { color: #0B1220; }

/* ─── Layout ─── */
.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding: clamp(5.5rem, 10vw, 8rem) 0;
  position: relative;
}

.section-tight { padding: clamp(3rem, 6vw, 5rem) 0; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 0.75rem;
}

.surface-bone .eyebrow { color: var(--brass); }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: filter var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: #D2A24C;
  color: #0B1220;
  border-color: #D2A24C;
}

.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 20px rgba(210, 162, 76, 0.35);
}

.btn-secondary {
  background: transparent;
  color: inherit;
  border-color: currentColor;
}

.btn-secondary:hover {
  filter: brightness(1.15);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

/* ─── Header ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  color: #EFF1F4;
  transition: background var(--transition), box-shadow var(--transition), color var(--transition);
}

.site-header.is-scrolled {
  background: #EFF1F4;
  color: #0B1220;
  box-shadow: 0 2px 16px rgba(11, 18, 32, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  min-height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.0625rem;
  color: inherit;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  width: 1.75rem;
  height: 1.75rem;
  background: var(--brass);
  border-radius: var(--radius);
  position: relative;
}

.logo-mark::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid var(--navy);
  border-radius: 1px;
}

.site-header.is-scrolled .logo-mark {
  background: var(--navy);
}

.site-header.is-scrolled .logo-mark::after {
  border-color: var(--brass);
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: inherit;
  text-decoration: none;
  opacity: 0.85;
}

.nav-link:hover,
.nav-link.is-active { opacity: 1; }

.nav-link.is-active { text-decoration: underline; text-decoration-color: var(--brass); }

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: #EFF1F4;
    color: #0B1220;
    padding: 1.5rem;
    gap: 0.75rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    box-shadow: 0 8px 24px rgba(11, 18, 32, 0.12);
  }
  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .header-cta { display: none; }
}

/* ─── Blueprint Hero ─── */
.hero-blueprint {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: #0B1220;
  color: #EFF1F4;
  overflow: hidden;
}

@media (max-width: 768px) {
  .hero-blueprint { min-height: 82vh; }
}

.hero-blueprint-bg {
  position: absolute;
  inset: 0;
  background-image: url('/images/propforgeai-01-hero-studio.jpg');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .hero-blueprint-bg {
    animation: heroKen 24s ease-in-out infinite alternate;
  }
}

@keyframes heroKen {
  from { transform: scale(1); }
  to { transform: scale(1.04); }
}

.hero-blueprint-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 18, 32, 0.92) 0%, rgba(11, 18, 32, 0.55) 50%, rgba(11, 18, 32, 0.75) 100%);
  z-index: 1;
}

.hero-blueprint-grid {
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 50%;
  background-image:
    linear-gradient(rgba(210, 162, 76, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(210, 162, 76, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: 2;
  pointer-events: none;
}

.hero-structure-line {
  position: absolute;
  bottom: 28%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
  z-index: 2;
  opacity: 0.4;
}

.hero-blueprint-inner {
  position: relative;
  z-index: 3;
  flex: 1;
  display: flex;
  flex-direction: column;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  padding-top: calc(var(--header-h) + 2rem);
  padding-bottom: 2rem;
}

.hero-masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(239, 241, 244, 0.25);
  margin-bottom: auto;
}

.hero-masthead-right { color: var(--brass); }

.hero-content {
  max-width: 36rem;
  margin-top: auto;
  padding-bottom: 2rem;
}

.hero-content h1 {
  margin-bottom: 1.25rem;
}

.hero-underline {
  text-decoration: underline;
  text-decoration-color: var(--brass);
  text-underline-offset: 0.12em;
  text-decoration-thickness: 2px;
}

.hero-lead {
  font-size: 1.0625rem;
  opacity: 0.88;
  max-width: 34rem;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.trust-strip {
  position: relative;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ash);
  padding: 0.85rem 1rem;
  border-top: 1px solid rgba(239, 241, 244, 0.12);
  text-align: center;
}

/* ─── Page hero (inner pages) ─── */
.page-hero {
  padding: calc(var(--header-h) + 3rem) 0 3rem;
  border-bottom: 1px solid rgba(239, 241, 244, 0.1);
}

.page-hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); }

.page-hero-lead {
  max-width: 42rem;
  opacity: 0.88;
  font-size: 1.125rem;
}

/* ─── Grid & cards ─── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.frosted-panel {
  background: rgba(239, 241, 244, 0.06);
  border: 1px solid rgba(239, 241, 244, 0.15);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.surface-bone .frosted-panel {
  background: rgba(11, 18, 32, 0.03);
  border-color: rgba(11, 18, 32, 0.1);
  box-shadow: 0 8px 32px rgba(11, 18, 32, 0.08);
}

.card {
  padding: 1.75rem;
  border: 1px solid rgba(239, 241, 244, 0.12);
  border-radius: var(--radius);
  position: relative;
}

.surface-bone .card {
  background: #fff;
  border-color: rgba(11, 18, 32, 0.08);
  box-shadow: 0 4px 20px rgba(11, 18, 32, 0.06);
}

.card-num {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 500;
  color: rgba(210, 162, 76, 0.15);
  position: absolute;
  top: 0.5rem;
  right: 1rem;
  line-height: 1;
  pointer-events: none;
}

.card-num-sm {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--brass);
  margin-bottom: 0.5rem;
}

/* ─── Stats ─── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

.stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 500;
  color: var(--brass);
  line-height: 1.1;
}

.stat-label {
  display: block;
  font-size: 0.8125rem;
  opacity: 0.75;
  margin-top: 0.35rem;
}

/* ─── Images ─── */
.img-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
}

.img-frame img { width: 100%; }

.img-caption {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ash);
  margin-top: 0.5rem;
}

.surface-bone .img-caption { color: var(--ash); }

/* ─── Steps ─── */
.steps {
  list-style: none;
  padding: 0;
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  padding: 1.25rem 0 1.25rem 3rem;
  border-bottom: 1px solid rgba(11, 18, 32, 0.08);
  position: relative;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--brass);
}

/* ─── Service block ─── */
.service-block {
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(11, 18, 32, 0.08);
}

.service-block:last-child { border-bottom: none; }

.service-price {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--brass);
  margin-top: 0.75rem;
}

/* ─── FAQ ─── */
.faq-item { border-bottom: 1px solid rgba(11, 18, 32, 0.1); }

.surface-slate .faq-item,
.surface-navy .faq-item { border-color: rgba(239, 241, 244, 0.12); }

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  text-align: left;
  color: inherit;
  cursor: pointer;
}

.faq-question::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--brass);
  flex-shrink: 0;
}

.faq-item.is-open .faq-question::after { content: '−'; }

.faq-answer {
  padding-bottom: 1.25rem;
  font-size: 0.9375rem;
}

.faq-answer[hidden] { display: none; }

/* ─── Forms ─── */
.form-surface {
  background: #EFF1F4;
  color: #0B1220;
  padding: 2rem;
  border-radius: var(--radius);
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
}

input, select, textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid rgba(11, 18, 32, 0.2);
  border-radius: var(--radius);
  background: #fff;
  color: #0B1220;
}

textarea { min-height: 8rem; resize: vertical; }

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-weight: 400;
  font-size: 0.875rem;
}

.checkbox-label input { width: auto; margin-top: 0.2rem; }

.form-note { font-size: 0.8125rem; color: var(--ash); }

.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

/* ─── Contact ─── */
.contact-block {
  padding: 1.75rem;
  background: rgba(11, 18, 32, 0.03);
  border: 1px solid rgba(11, 18, 32, 0.08);
  border-radius: var(--radius);
}

.contact-block dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ash);
  margin-bottom: 0.25rem;
}

.contact-block dd {
  margin: 0 0 1.25rem;
  font-weight: 600;
}

.contact-block dd:last-child { margin-bottom: 0; }

/* ─── Legal ─── */
.legal-content h2 { font-size: 1.35rem; margin-top: 2.5rem; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 { font-size: 1.1rem; margin-top: 1.75rem; }

.legal-meta {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ash);
  margin-bottom: 2rem;
}

/* ─── Case study ─── */
.case-study {
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(11, 18, 32, 0.08);
}

.case-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brass);
  margin-bottom: 0.5rem;
}

/* ─── CTA band ─── */
.cta-band {
  text-align: center;
  padding: clamp(4rem, 9vw, 6rem) 1rem;
}

.cta-band h2 { margin-bottom: 0.75rem; }
.cta-band p { max-width: 44ch; margin-inline: auto 1.5rem; }

/* ─── Disclaimer box ─── */
.disclaimer-box {
  font-size: 0.875rem;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--brass);
  background: rgba(210, 162, 76, 0.08);
  margin: 2rem 0;
}

.surface-slate .disclaimer-box,
.surface-navy .disclaimer-box {
  background: rgba(210, 162, 76, 0.1);
}

/* ─── Footer ─── */
.site-footer { padding: clamp(2.5rem, 6vw, 4rem) 0 0; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  padding-bottom: 2.5rem;
}

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

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.footer-meta {
  font-size: 0.875rem;
  opacity: 0.65;
  margin-bottom: 0.35rem;
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-links a {
  font-size: 0.875rem;
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(239, 241, 244, 0.1);
  padding: 1.5rem 1rem 2rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.footer-disclaimer,
.footer-hosting {
  font-size: 0.8125rem;
  opacity: 0.55;
  margin-bottom: 0.5rem;
}

.footer-copy {
  font-size: 0.8125rem;
  opacity: 0.45;
  margin: 0;
}

/* ─── Cookie banner ─── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 1.25rem;
  border-top: 1px solid rgba(11, 18, 32, 0.12);
  box-shadow: 0 -4px 24px rgba(11, 18, 32, 0.12);
}

.cookie-banner[hidden] { display: none; }

.cookie-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  width: min(100%, var(--max-width));
  margin-inline: auto;
}

.cookie-inner p {
  flex: 1 1 16rem;
  margin: 0;
  font-size: 0.875rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cookie-custom {
  width: min(100%, var(--max-width));
  margin: 1rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(11, 18, 32, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.cookie-custom[hidden] { display: none; }

.cookie-custom label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 400;
  font-size: 0.875rem;
  margin: 0;
}

/* ─── Reveal ─── */
.reveal {
  transform: translateY(16px);
  transition: transform 0.6s ease;
}

.js .reveal { transform: translateY(16px); }
.js .reveal.is-visible { transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal, .js .reveal, .js .reveal.is-visible { transform: none; }
}

/* ─── 404 / Thanks ─── */
.error-page, .thanks-page {
  min-height: 55vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding: calc(var(--header-h) + 3rem) 1rem 4rem;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--brass);
  margin-bottom: 1rem;
}

/* ─── Utility ─── */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: 2.5rem; }
.blueprint-corner {
  position: absolute;
  width: 48px;
  height: 48px;
  border-top: 1px solid var(--brass);
  border-left: 1px solid var(--brass);
  opacity: 0.35;
  pointer-events: none;
}