/* ==========================================================================
   Print-Flow — one-pager stylesheet
   Vanilla CSS, no framework, no build step.
   ========================================================================== */

:root {
  /* Color */
  --color-bg: #0a0b0d;
  --color-bg-raised: #0d0f12;
  --color-surface: #15171b;
  --color-surface-2: #1d2025;
  --color-border: #262a31;
  --color-text-primary: #f4f3ef;
  --color-text-secondary: #9ca0aa;
  --color-text-tertiary: #6b7078;
  --color-accent: #2ed3ff;
  --color-accent-hover: #61e0ff;
  --color-accent-press: #1ab8db;
  --color-accent-muted: rgba(46, 211, 255, 0.12);
  --color-accent-text-on: #06181d;

  /* Type */
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --fs-h1: clamp(2.5rem, 4vw + 1.4rem, 4.25rem);
  --fs-h2: clamp(1.9rem, 2.4vw + 1.1rem, 2.75rem);
  --fs-h3: clamp(1.15rem, 0.6vw + 1rem, 1.375rem);
  --fs-body-lg: clamp(1.05rem, 0.4vw + 0.95rem, 1.25rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --lh-tight: 1.12;
  --lh-snug: 1.35;
  --lh-normal: 1.6;

  /* Space */
  --space-section: clamp(4.5rem, 8vw, 8rem);
  --content-max: 1240px;
  --content-pad: clamp(1.25rem, 4vw, 2.5rem);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --nav-height: 76px;

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-base: 0.8s;
  --dur-fast: 0.3s;
}

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

* {
  margin: 0;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
select,
textarea {
  font: inherit;
  color: inherit;
}

ul {
  list-style: none;
  padding: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  text-wrap: balance;
}

section[id] {
  scroll-margin-top: var(--nav-height);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--content-pad);
}

.section {
  padding-block: var(--space-section);
  position: relative;
}

.section-head {
  max-width: 640px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1.5px;
  background: var(--color-accent);
}

.section-head h2 {
  font-size: var(--fs-h2);
  margin-bottom: 0.9rem;
}

.section-head p {
  font-size: var(--fs-body-lg);
  color: var(--color-text-secondary);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 999;
  background: var(--color-accent);
  color: var(--color-accent-text-on);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--dur-fast) var(--ease-out-expo);
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.9rem 1.75rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.98rem;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out-expo),
    background var(--dur-fast) var(--ease-out-expo),
    box-shadow var(--dur-fast) var(--ease-out-expo),
    border-color var(--dur-fast) var(--ease-out-expo);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-text-on);
  box-shadow: 0 0 0 0 rgba(46, 211, 255, 0);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 8px 30px -8px rgba(46, 211, 255, 0.55);
  transform: translateY(-2px);
}

.btn-primary:active {
  background: var(--color-accent-press);
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-out-expo),
    border-color var(--dur-fast) var(--ease-out-expo),
    backdrop-filter var(--dur-fast) var(--ease-out-expo);
}

.site-header.nav-scrolled {
  background: rgba(10, 11, 13, 0.78);
  border-bottom-color: var(--color-border);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.nav-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-links {
  display: none;
  align-items: center;
  gap: 2.25rem;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  position: relative;
  transition: color var(--dur-fast) var(--ease-out-expo);
}

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

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1.5px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  display: none;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  margin-inline: auto;
  background: var(--color-text-primary);
  transition: transform var(--dur-fast) var(--ease-out-expo),
    opacity var(--dur-fast) var(--ease-out-expo);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  z-index: 90;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  padding: 2.5rem var(--content-pad);
  gap: 2rem;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out-expo),
    transform var(--dur-fast) var(--ease-out-expo);
}

.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
}

@media (min-width: 900px) {
  .nav-links {
    display: flex;
  }
  .nav-cta {
    display: inline-flex;
  }
  .nav-toggle,
  .mobile-menu {
    display: none;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: clip;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: linear-gradient(160deg, #101317, var(--color-bg));
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.55;
  will-change: transform;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 11, 13, 0.55) 0%, rgba(10, 11, 13, 0.75) 55%, var(--color-bg) 100%),
    radial-gradient(60% 50% at 20% 15%, rgba(46, 211, 255, 0.16), transparent 70%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(244, 243, 239, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 243, 239, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(70% 60% at 50% 30%, black, transparent 90%);
}

.hero-content {
  max-width: 760px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.45rem 0.9rem 0.45rem 0.7rem;
  border: 1px solid var(--color-border);
  background: rgba(21, 23, 27, 0.6);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
}

.hero-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-muted);
}

.hero h1 {
  font-size: var(--fs-h1);
  margin-bottom: 1.5rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-sub {
  font-size: var(--fs-body-lg);
  color: var(--color-text-secondary);
  max-width: 54ch;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.trust-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  padding-block: 0.4rem;
}

.trust-pill svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.scroll-cue {
  position: absolute;
  left: var(--content-pad);
  bottom: 2rem;
  display: none;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-tertiary);
  font-size: var(--fs-small);
}

.scroll-cue .line {
  width: 1px;
  height: 32px;
  background: linear-gradient(var(--color-text-tertiary), transparent);
  animation: scrollcue 2.2s var(--ease-out-expo) infinite;
}

@keyframes scrollcue {
  0% {
    transform: scaleY(0);
    transform-origin: top;
    opacity: 0;
  }
  40% {
    transform: scaleY(1);
    transform-origin: top;
    opacity: 1;
  }
  60% {
    transform: scaleY(1);
    transform-origin: bottom;
    opacity: 1;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
    opacity: 0;
  }
}

@media (min-width: 700px) {
  .scroll-cue {
    display: flex;
  }
}

/* ==========================================================================
   Reveal-on-scroll utility
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-base) var(--ease-out-expo),
    transform var(--dur-base) var(--ease-out-expo);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-media img {
    transform: none !important;
  }
  html {
    scroll-behavior: auto;
  }
  .scroll-cue .line {
    animation: none;
  }
}

/* ==========================================================================
   Services / use-cases
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--dur-fast) var(--ease-out-expo),
    border-color var(--dur-fast) var(--ease-out-expo);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-2));
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out-expo);
}

.card:hover .card-media img {
  transform: scale(1.05);
}

.media--fallback img {
  display: none;
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-muted);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.4rem;
}

.card-icon svg {
  width: 20px;
  height: 20px;
}

.card h3 {
  font-size: var(--fs-h3);
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.96rem;
}

.card--more {
  background: transparent;
  border-style: dashed;
  justify-content: center;
}

.card--more .card-body {
  align-items: flex-start;
}

.card--more:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-muted);
}

.card-link {
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--color-accent);
  font-weight: 500;
  font-size: 0.94rem;
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}

.card--more:hover .card-link svg {
  transform: translateX(3px);
}

/* ==========================================================================
   Process timeline
   ========================================================================== */
.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  counter-reset: step;
  position: relative;
}

.timeline-step {
  position: relative;
  padding-left: 3.75rem;
}

.timeline-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 1.375rem;
  top: 2.75rem;
  width: 1px;
  height: calc(100% + 2.25rem - 2.75rem);
  background: var(--color-border);
}

.timeline-step h3 {
  font-size: var(--fs-h3);
  margin-bottom: 0.4rem;
}

.timeline-step p {
  color: var(--color-text-secondary);
}

@media (min-width: 900px) {
  .timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
  .timeline-step {
    padding-left: 0;
    padding-top: 3.5rem;
  }
  .timeline-step::before {
    left: 0;
    top: 0;
  }
  .timeline-step:not(:last-child)::after {
    left: 2.75rem;
    top: 1.375rem;
    width: calc(100% - 2.75rem + 1.5rem);
    height: 1px;
  }
}

/* ==========================================================================
   About / trust
   ========================================================================== */
.about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.about-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 5 / 4;
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-2));
  border: 1px solid var(--color-border);
}

.about-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-media figcaption {
  position: absolute;
  left: 1.25rem;
  bottom: 1.25rem;
  font-size: var(--fs-small);
  color: var(--color-text-primary);
  background: rgba(10, 11, 13, 0.6);
  backdrop-filter: blur(6px);
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
}

.about-copy p {
  color: var(--color-text-secondary);
  font-size: var(--fs-body-lg);
  margin-bottom: 2.25rem;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.trust-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.trust-item .card-icon {
  flex-shrink: 0;
  margin-bottom: 0;
}

.trust-item h3 {
  font-size: 1.02rem;
  margin-bottom: 0.3rem;
}

.trust-item p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
}

@media (min-width: 900px) {
  .about-layout {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-section {
  background: var(--color-bg-raised);
  border-top: 1px solid var(--color-border);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.contact-info h2 {
  font-size: var(--fs-h2);
  margin-bottom: 1rem;
}

.contact-info > p {
  color: var(--color-text-secondary);
  font-size: var(--fs-body-lg);
  margin-bottom: 2rem;
  max-width: 46ch;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.1rem;
  color: var(--color-text-secondary);
}

.contact-detail a {
  color: var(--color-text-primary);
  font-weight: 500;
  transition: color var(--dur-fast) var(--ease-out-expo);
}

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

.contact-detail svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-field label {
  font-size: 0.9rem;
  font-weight: 500;
}

.form-field .optional {
  color: var(--color-text-tertiary);
  font-weight: 400;
}

.form-field input,
.form-field select,
.form-field textarea {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  transition: border-color var(--dur-fast) var(--ease-out-expo);
}

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

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--color-accent);
  outline: none;
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  margin-top: 1rem;
  text-align: center;
}

@media (min-width: 640px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .contact-layout {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 4rem;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

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