/* ================================================
   IconiTech — styles.css
   Dark-mode-only marketing site. Mobile-first.
   No framework, no build step.
   ================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }

/* ---------- Design tokens ---------- */
:root {
  --color-bg: #0F172A;
  --color-bg-2: #0B1220;
  --color-surface: #1E293B;
  --color-surface-2: #273449;
  --color-fg: #F8FAFC;
  --color-fg-muted: #94A3B8;
  --color-border: #1F2D44;
  --color-border-strong: #334155;
  --color-accent: #22C55E;
  --color-accent-strong: #2EE86A;
  --color-accent-ink: #052E16;
  --color-accent-glow: rgba(34, 197, 94, 0.28);

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;

  --max-width: 1200px;
  --gutter: clamp(1rem, 4vw, 2rem);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 150ms;
  --dur-base: 220ms;
}

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
section { padding-block: clamp(4rem, 9vw, 7rem); }

/* ---------- Typography ---------- */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-fg);
}
h1 { font-size: clamp(2.25rem, 6vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: 1.1875rem; }
p { color: var(--color-fg-muted); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius);
  font-weight: 600;
  transform: translateY(-200%);
  transition: transform var(--dur-base) var(--ease-out);
  z-index: 100;
}
.skip-link:focus { transform: translateY(0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  min-height: 48px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
  transition:
    transform var(--dur-fast) var(--ease-out),
    background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  box-shadow: 0 0 0 1px var(--color-accent), 0 10px 32px -14px var(--color-accent-glow);
}
.btn-primary:hover {
  background: var(--color-accent-strong);
  box-shadow: 0 0 0 1px var(--color-accent-strong), 0 14px 36px -12px var(--color-accent-glow);
}
.btn-primary:active { transform: translateY(1px); }
.btn-ghost {
  background: transparent;
  color: var(--color-fg);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover {
  background: var(--color-surface);
  border-color: var(--color-fg-muted);
}
.btn .arrow { transition: transform var(--dur-base) var(--ease-out); }
.btn:hover .arrow { transform: translateX(2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out);
}
.site-header.is-scrolled { border-bottom-color: var(--color-border); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--color-fg);
  flex: none;
}
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-name strong { font-weight: 700; }
.brand-name span { color: var(--color-accent); font-weight: 700; }

.primary-nav {
  display: none;
  align-items: center;
  gap: 2rem;
}
.primary-nav a {
  color: var(--color-fg-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--dur-base) var(--ease-out);
}
.primary-nav a:hover,
.primary-nav a:focus-visible { color: var(--color-fg); }
.primary-nav a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 4px; border-radius: 4px; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
}
.lang-switch a {
  padding: 6px 10px;
  border-radius: 7px;
  color: var(--color-fg-muted);
  letter-spacing: 0.05em;
  transition: color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.lang-switch a[aria-current="page"] {
  background: var(--color-bg);
  color: var(--color-fg);
}
.lang-switch a:not([aria-current]):hover { color: var(--color-fg); }
.lang-switch a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.header-cta {
  display: none;
  padding: 0.625rem 1.125rem;
  min-height: 40px;
  font-size: 0.875rem;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-fg);
}
.nav-toggle:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.nav-toggle svg { width: 20px; height: 20px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* Mobile nav sheet */
.mobile-nav {
  display: none;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: 0.5rem var(--gutter) 1.5rem;
}
.mobile-nav[data-open="true"] { display: block; }
.mobile-nav ul { display: flex; flex-direction: column; }
.mobile-nav a {
  display: block;
  padding: 1rem 0.25rem;
  color: var(--color-fg);
  font-weight: 500;
  font-size: 1.0625rem;
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav .btn-primary { margin-top: 1.25rem; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 12vw, 9rem) clamp(4rem, 9vw, 7rem);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(148, 163, 184, 0.14) 1px, transparent 0);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse at center top, black 35%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center top, black 35%, transparent 80%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: -20% -20% auto -20%;
  height: 70%;
  background: radial-gradient(ellipse at center, var(--color-accent-glow), transparent 70%);
  opacity: 0.32;
  filter: blur(80px);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 820px; }
.hero .eyebrow::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 0 var(--color-accent-glow);
  animation: pulse 2.4s var(--ease-out) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--color-accent-glow); }
  50%      { box-shadow: 0 0 0 7px transparent; }
}
.hero h1 { margin-top: 1.25rem; }
.hero h1 .accent { color: var(--color-accent); }
.hero .lede {
  margin-top: 1.25rem;
  font-size: clamp(1rem, 1.4vw, 1.1875rem);
  max-width: 640px;
  color: var(--color-fg-muted);
}
.hero-cta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- Partners strip ---------- */
.partners {
  padding-block: clamp(2.25rem, 5vw, 3.25rem);
  border-block: 1px solid var(--color-border);
  background: var(--color-bg-2);
}
.partners-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-fg-muted);
  text-align: center;
  margin-bottom: 1.5rem;
}
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1.5rem 2.5rem;
}
.partner {
  color: var(--color-fg-muted);
  opacity: 0.7;
  transition: opacity var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.partner svg { height: 32px; width: auto; fill: currentColor; }
.partner:hover { opacity: 1; color: var(--color-fg); }

/* ---------- Shared: section intro ---------- */
.section-intro { max-width: 680px; margin-bottom: 3rem; }
.section-intro h2 { margin-top: 1rem; }
.section-intro p { margin-top: 1rem; font-size: 1.0625rem; }

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
.service-card {
  position: relative;
  padding: 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition:
    border-color var(--dur-base) var(--ease-out),
    background var(--dur-base) var(--ease-out);
}
.service-card:hover {
  border-color: var(--color-border-strong);
  background: var(--color-surface-2);
}
.service-index {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-fg-muted);
  opacity: 0.5;
  letter-spacing: 0.05em;
}
.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-accent);
  border: 1px solid rgba(34, 197, 94, 0.25);
  margin-bottom: 1.25rem;
}
.service-icon svg { width: 22px; height: 22px; }
.service-card h3 { margin-bottom: 0.625rem; }
.service-card > p { font-size: 0.9375rem; }
.service-card ul {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--color-border);
}
.service-card li {
  font-size: 0.875rem;
  color: var(--color-fg-muted);
  padding-left: 1.125rem;
  position: relative;
}
.service-card li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: -1px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ---------- Proof ---------- */
.proof {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-2) 100%);
  border-block: 1px solid var(--color-border);
}
.testimonials {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
.quote {
  position: relative;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.quote::before {
  content: "\201C";
  position: absolute;
  top: 0.5rem;
  left: 1.25rem;
  font-family: Georgia, serif;
  font-size: 3.75rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.4;
  pointer-events: none;
}
.quote blockquote {
  position: relative;
  font-size: 1.0625rem;
  color: var(--color-fg);
  line-height: 1.65;
}
.quote figcaption {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-fg-muted);
  font-family: var(--font-mono);
  line-height: 1.55;
}
.quote figcaption strong { color: var(--color-fg); font-weight: 600; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
.about-body h2 { margin-top: 1rem; }
.about-body p { font-size: 1.0625rem; margin-top: 1rem; }
.about-aside h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-fg-muted);
  font-weight: 500;
  margin-bottom: 1rem;
}
.skill-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-chips span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.375rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-fg-muted);
  transition: color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.skill-chips span:hover {
  color: var(--color-fg);
  border-color: var(--color-border-strong);
}

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact-inner { max-width: 640px; margin: 0 auto; }
.contact h2 { margin-top: 1rem; }
.contact p { margin-top: 1rem; font-size: 1.0625rem; }
.contact-cta { margin-top: 2rem; }
.contact .btn-primary { font-family: var(--font-mono); }
.contact-meta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
  font-size: 0.8125rem;
  color: var(--color-fg-muted);
  font-family: var(--font-mono);
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: 2.5rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-2);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-fg-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}
.footer-brand svg { width: 22px; height: 22px; opacity: 0.75; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
}
.footer-links a {
  color: var(--color-fg-muted);
  transition: color var(--dur-base) var(--ease-out);
}
.footer-links a:hover { color: var(--color-fg); }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero .eyebrow::before { animation: none; }
}

/* ---------- Responsive breakpoints ---------- */
@media (min-width: 640px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials { grid-template-columns: repeat(2, 1fr); }
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .primary-nav { display: flex; }
  .header-cta { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
  .about-grid {
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
  }
}

@media (min-width: 1200px) {
  .services-grid { grid-template-columns: repeat(4, 1fr); }
}