/* Twizzel flagship — dark craft, not SaaS-purple */
:root {
  --bg: #0b0d10;
  --bg-elevated: #12161c;
  --bg-panel: #171c24;
  --ink: #e8eaed;
  --ink-muted: #9aa3b2;
  --line: rgba(232, 234, 237, 0.12);
  --accent: #3dffb5;
  --accent-dim: rgba(61, 255, 181, 0.14);
  --accent-ink: #062117;
  --warm: #ffb347;
  --danger: #ff6b6b;
  --font-display: "Syne", sans-serif;
  --font-body: "Source Sans 3", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 4px;
  --shell: min(1120px, calc(100% - 2.5rem));
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(61, 255, 181, 0.08), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(255, 179, 71, 0.05), transparent 50%),
    linear-gradient(180deg, #0e1218 0%, var(--bg) 40%, #090b0e 100%);
  background-attachment: fixed;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #7dffd0;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 16, 0.85);
  backdrop-filter: blur(12px);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 0.85rem;
  height: 0.85rem;
  background: var(--accent);
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  transform: translateY(1px);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.15rem;
}

.site-nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
}

.site-nav .nav-cta {
  margin-left: 0.35rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  transition: background 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
}

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

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 0.28rem auto;
  background: var(--ink);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary:hover {
  background: #6dffc6;
  color: var(--accent-ink);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink-muted);
  color: var(--ink);
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Typography helpers */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

.lede {
  color: var(--ink-muted);
  max-width: 38rem;
  margin: 0;
  font-size: 1.1rem;
}

.section {
  padding: 4.5rem 0;
}

.section-tight {
  padding: 3rem 0;
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-shell {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3rem 0 4rem;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 8vw, 5.6rem);
  letter-spacing: -0.05em;
  line-height: 0.92;
  margin: 0 0 1.25rem;
  color: var(--ink);
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 0.85rem;
  max-width: 18ch;
}

.hero-support {
  color: var(--ink-muted);
  font-size: 1.125rem;
  max-width: 32rem;
  margin: 0 0 1.75rem;
}

.hero-visual {
  position: relative;
  min-height: 22rem;
}

.ui-stage {
  position: relative;
  height: 100%;
  min-height: 22rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(61, 255, 181, 0.06), transparent 40%),
    var(--bg-elevated);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

.ui-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.45;
  pointer-events: none;
}

.ui-chrome {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
}

.ui-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #3a4250;
}

.ui-dot:nth-child(1) { background: #ff6b6b; }
.ui-dot:nth-child(2) { background: #ffb347; }
.ui-dot:nth-child(3) { background: #3dffb5; }

.ui-chrome-label {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.code-panel {
  position: relative;
  z-index: 1;
  padding: 1.1rem 1.2rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: #c5ccd8;
}

.code-panel .kw { color: var(--accent); }
.code-panel .str { color: var(--warm); }
.code-panel .cm { color: #6b7382; }
.code-panel .fn { color: #9ecbff; }

.ui-float {
  position: absolute;
  z-index: 2;
  right: 1.1rem;
  bottom: 1.1rem;
  width: min(220px, 70%);
  padding: 0.85rem 1rem;
  border: 1px solid rgba(61, 255, 181, 0.35);
  border-radius: var(--radius);
  background: rgba(11, 13, 16, 0.92);
  backdrop-filter: blur(8px);
}

.ui-float strong {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.ui-float span {
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.status-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(61, 255, 181, 0.55);
  animation: pulse-dot 2s ease-out infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(61, 255, 181, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(61, 255, 181, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 255, 181, 0); }
}

.code-panel .cursor {
  display: inline-block;
  width: 0.55ch;
  height: 1.1em;
  margin-left: 1px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Motion: hero entrance */
.hero-copy > *,
.hero-visual {
  opacity: 0;
  transform: translateY(18px);
  animation: rise-in 0.9s var(--ease) forwards;
}

.hero-copy > *:nth-child(1) { animation-delay: 0.05s; }
.hero-copy > *:nth-child(2) { animation-delay: 0.15s; }
.hero-copy > *:nth-child(3) { animation-delay: 0.25s; }
.hero-copy > *:nth-child(4) { animation-delay: 0.35s; }
.hero-copy > *:nth-child(5) { animation-delay: 0.45s; }
.hero-visual { animation-delay: 0.3s; }

@keyframes rise-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ui-float {
  animation: float-soft 5s ease-in-out infinite;
}

@keyframes float-soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-copy > *,
  .hero-visual,
  .ui-float,
  .reveal,
  .status-dot,
  .code-panel .cursor {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* Social proof */
.proof-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.proof-row strong {
  color: var(--ink);
  font-weight: 700;
}

/* Service teasers */
.teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.teaser {
  padding: 1.35rem 0 0;
  border-top: 1px solid var(--line);
}

.teaser h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.teaser p {
  margin: 0;
  color: var(--ink-muted);
}

.teaser a {
  display: inline-block;
  margin-top: 0.85rem;
  font-weight: 700;
  text-decoration: none;
}

/* Featured case */
.case-feature {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  margin-top: 2rem;
  align-items: stretch;
}

.case-visual {
  position: relative;
  min-height: 14rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-panel);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
  display: flex;
  align-items: stretch;
}

.case-feature:hover .case-visual {
  border-color: rgba(61, 255, 181, 0.45);
  transform: translateY(-3px);
}

.case-visual .mock-ui,
.case-card-visual .mock-ui {
  width: 100%;
  height: 100%;
  min-height: 11rem;
}

.case-visual-inner {
  position: absolute;
  inset: 1.25rem;
  border: 1px dashed rgba(61, 255, 181, 0.25);
  border-radius: 4px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
  background:
    radial-gradient(circle at 30% 30%, rgba(61, 255, 181, 0.12), transparent 45%),
    radial-gradient(circle at 70% 70%, rgba(255, 179, 71, 0.1), transparent 40%);
}

.case-badge {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--warm);
}

.case-copy h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.case-copy p {
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

/* ZZP band */
.band {
  border-block: 1px solid var(--line);
  background: var(--accent-dim);
}

.band-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.band-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
}

.band-inner p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 36rem;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 0.85rem;
}

/* Services detail */
.service-block {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.5rem 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--line);
}

.service-block h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.service-meta {
  color: var(--ink-muted);
  margin: 0;
}

.service-body p {
  margin: 0 0 0.85rem;
  color: var(--ink-muted);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.pill {
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.pill-accent {
  border-color: rgba(61, 255, 181, 0.35);
  color: var(--accent);
}

.disclaimer {
  padding: 1.15rem 1.25rem;
  border: 1px solid rgba(255, 179, 71, 0.35);
  border-left: 3px solid var(--warm);
  border-radius: var(--radius);
  background: rgba(255, 179, 71, 0.06);
}

.disclaimer p {
  margin: 0 0 0.75rem;
  color: var(--ink-muted);
}

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

.disclaimer strong {
  color: var(--ink);
}

.disclaimer ul {
  margin: 0 0 0.75rem;
  padding-left: 1.15rem;
  color: var(--ink-muted);
}

.disclaimer li {
  margin-bottom: 0.35rem;
}

.disclaimer a {
  font-weight: 700;
}

/* Cases grid */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin: 2.5rem 0 1rem;
}

.case-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-elevated);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.case-card:hover {
  border-color: rgba(61, 255, 181, 0.4);
  transform: translateY(-4px);
}

.case-card-visual {
  height: auto;
  min-height: 10rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  display: flex;
}

.case-card-visual[data-tone="a"],
.case-card-visual[data-tone="b"],
.case-card-visual[data-tone="c"],
.case-card-visual[data-tone="d"] {
  background: var(--bg-panel);
}

.case-card-body {
  padding: 1.15rem 1.25rem 1.35rem;
}

.case-card-body h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 0.45rem;
  letter-spacing: -0.02em;
}

.case-card-body p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

/* Process steps */
.steps {
  display: grid;
  gap: 0;
  margin: 2rem 0;
}

.step {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  padding-top: 0.35rem;
}

.step h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 0.4rem;
}

.step p {
  margin: 0;
  color: var(--ink-muted);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  margin-top: 2rem;
}

.about-grid p {
  color: var(--ink-muted);
}

.family-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.family-list li {
  border-top: 1px solid var(--line);
}

.family-list a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
}

.family-list a span {
  color: var(--ink-muted);
  font-weight: 400;
}

/* Contact form */
.form-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 2.5rem;
  margin: 2.5rem 0 1rem;
}

.form-aside p {
  color: var(--ink-muted);
}

.form-aside a {
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid rgba(61, 255, 181, 0.45);
  outline-offset: 1px;
  border-color: rgba(61, 255, 181, 0.5);
}

.field textarea {
  min-height: 9rem;
  resize: vertical;
}

.field-error,
.validation-summary-errors {
  color: var(--danger);
  font-size: 0.9rem;
  margin: 0.35rem 0 0;
}

.alert {
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.alert-ok {
  border: 1px solid rgba(61, 255, 181, 0.4);
  background: var(--accent-dim);
  color: var(--ink);
}

.alert-err {
  border: 1px solid rgba(255, 107, 107, 0.45);
  background: rgba(255, 107, 107, 0.1);
  color: var(--ink);
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  background: #080a0c;
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  margin: 0 0 0.4rem;
}

.footer-tag,
.footer-mail {
  color: var(--ink-muted);
  margin: 0 0 0.5rem;
}

.footer-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 0.75rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.45rem;
}

.footer-links a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}

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

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.footer-bottom p {
  margin: 0;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-shell,
  .case-feature,
  .service-block,
  .about-grid,
  .form-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .teaser-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(11, 13, 16, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav .nav-cta {
    margin: 0.75rem 0 0;
    text-align: center;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 18rem;
  }
}

@media (max-width: 560px) {
  :root {
    --shell: min(1120px, calc(100% - 1.5rem));
  }

  .hero-brand {
    font-size: clamp(2.6rem, 14vw, 3.4rem);
  }

  .step {
    grid-template-columns: 3rem 1fr;
  }
}