/* ==========================================================================
   patenttikalle.com – dark technical theme
   Plain CSS, no frameworks. Design tokens below.
   ========================================================================== */

:root {
  /* Colors */
  --bg: #0b0f14;
  --bg-elev: #101722;
  --bg-card: #121a26;
  --bg-terminal: #0a0e13;
  --border: #223042;
  --border-strong: #2e4055;
  --text: #e6edf3;
  --text-muted: #93a1b0;
  --accent: #34d399;
  --accent-strong: #6ee7b7;
  --accent-dim: #1c6b52;
  --on-accent: #06251b;
  --accent-soft: rgba(52, 211, 153, 0.10);

  /* Type */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", monospace;

  /* Layout */
  --container: 68rem;
  --radius: 12px;
  --radius-sm: 8px;

  /* Motion */
  --transition: 160ms ease;
}

/* ---------- Reset / base ---------- */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.75em;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.1rem, 5vw, 3.1rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

::selection {
  background: var(--accent);
  color: var(--on-accent);
}

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

/* ---------- Layout helpers ---------- */

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--bg-elev);
  border-block: 1px solid var(--border);
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  text-transform: lowercase;
  margin-bottom: 0.75rem;
}

.eyebrow::before {
  content: "$ ";
}

.lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 40rem;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.5rem;
}

/* ---------- Skip link ---------- */

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--accent);
  color: var(--on-accent);
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.9rem 0;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

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

.logo-cursor {
  color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

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

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

.nav-cta {
  border: 1px solid var(--accent-dim);
  color: var(--accent) !important;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  transition: background var(--transition), color var(--transition);
}

.nav-cta:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-secondary {
  border-color: var(--border-strong);
  color: var(--text);
  background: transparent;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 5rem 0 4.5rem;
  overflow: hidden;
}

/* Subtle grid backdrop */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(52, 211, 153, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52, 211, 153, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 30%, transparent 75%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  margin-bottom: 0.5rem;
}

.hero .lead {
  margin-bottom: 2rem;
}

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

/* ---------- Terminal mockup ---------- */

.terminal {
  background: var(--bg-terminal);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.7);
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.7rem 1rem;
  background: #10161f;
  border-bottom: 1px solid var(--border);
}

.terminal-header .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }

.terminal-title {
  margin-left: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.terminal-body {
  padding: 1.25rem 1.25rem 1.5rem;
  line-height: 1.8;
}

.terminal-body .prompt {
  color: var(--accent);
}

.terminal-body .cmd {
  color: var(--text);
}

.terminal-body .out {
  color: var(--text-muted);
}

.terminal-body .ok {
  color: var(--accent);
}

.terminal-body .cursor {
  color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

/* ---------- Cards ---------- */

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

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-3px);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 1rem;
}

.card-link {
  font-weight: 600;
  font-size: 0.95rem;
}

/* ---------- Why section ---------- */

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.why-item {
  display: flex;
  gap: 1rem;
}

.why-item .tick {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

.why-item h3 {
  margin-bottom: 0.3rem;
}

.why-item p {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--bg-card);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: 3rem;
  text-align: center;
}

.cta-band .lead {
  margin-inline: auto;
  margin-bottom: 1.75rem;
}

/* ---------- Page head (subpages) ---------- */

.page-head {
  padding: 4rem 0 2.5rem;
}

.page-head h1 {
  margin-bottom: 0.5rem;
}

/* ---------- Services ---------- */

.service-group {
  margin-bottom: 4rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.service-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.service-item h3 {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.service-item h3::before {
  content: "$ ";
  color: var(--accent-dim);
}

.service-item p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 0;
}

/* Featured service card – spans the full grid row */
.service-featured {
  grid-column: 1 / -1;
  border-color: var(--accent-dim);
  background:
    linear-gradient(160deg, var(--accent-soft), transparent 55%),
    var(--bg-card);
}

.service-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  margin-bottom: 0.75rem;
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info h2 {
  font-size: 1.35rem;
}

.contact-email {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  display: inline-block;
  border: 1px solid var(--accent-dim);
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1.1rem;
  margin-bottom: 2rem;
}

.contact-meta {
  color: var(--text-muted);
  font-size: 0.98rem;
}

.contact-meta strong {
  color: var(--text);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

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

.field {
  margin-bottom: 1.25rem;
}

.field-full {
  grid-column: 1 / -1;
}

.field label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  background: var(--bg-terminal);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  font-size: 0.98rem;
  padding: 0.65rem 0.85rem;
  transition: border-color var(--transition);
}

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

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0.5rem 0 0;
}

.form-note a {
  color: var(--text-muted);
  text-decoration: underline;
}

/* ---------- Privacy policy ---------- */

.prose {
  max-width: 44rem;
}

.prose h2 {
  font-size: 1.3rem;
  margin-top: 2.5rem;
  margin-bottom: 0.5rem;
}

.prose p,
.prose li {
  color: var(--text-muted);
}

.prose ul {
  padding-left: 1.25rem;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-inner p {
  margin: 0;
}

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

.footer-inner a {
  color: var(--text-muted);
}

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

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .why-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .cta-band {
    padding: 2.25rem 1.5rem;
  }
}

@media (max-width: 560px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3rem 0;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .logo-cursor,
  .terminal-body .cursor {
    animation: none;
  }

  .btn,
  .card {
    transition: none;
  }

  .card:hover {
    transform: none;
  }
}