/* AlphaCube Tech - single page, clean, mobile-first */

html {
  scroll-behavior: smooth;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fafafa;
}

/* Limited palette */
:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-text: #1a1a1a;
  --color-text-muted: #4b5563;
  --color-bg: #fafafa;
  --color-bg-section: #fff;
  --color-border: #e5e7eb;
}

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

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Skip link - visible on focus */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  left: 0;
  top: 0;
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

/* Scroll-in animation - only when JS has run (progressive enhancement) */
html.has-js section:not(.in-view),
html.has-js .service-card:not(.in-view) {
  opacity: 0;
  transform: translateY(12px);
}

section,
.service-card {
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

section.in-view,
.service-card.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Header - unified, sticky */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-section);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.site-header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
}

.site-title a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo-header {
  height: 2rem;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.site-header .site-title a {
  color: var(--color-text);
  text-decoration: none;
}

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

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--color-text-muted);
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--color-primary);
}

/* Main content - plenty of whitespace */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

section {
  padding: 3rem 0;
}

section:first-of-type {
  padding-top: 2rem;
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 0;
}

.hero-logo {
  max-height: 5rem;
  width: auto;
  margin: 0 auto 1rem;
  display: block;
}

.hero h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.hero .tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  margin: 0;
}

/* About */
#about h2,
#services h2,
#contact h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--color-text);
}

#about p {
  margin: 0;
  max-width: 60ch;
  color: var(--color-text-muted);
}

.why-us {
  margin-top: 1.5rem;
  max-width: 60ch;
}

.why-us h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.why-us ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
}

.why-us li {
  margin-bottom: 0.25rem;
}

/* CTA block */
.cta-block {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: var(--color-bg);
  border-radius: 8px;
  margin: 2rem 0;
}

.cta-text {
  margin: 0 0 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.cta-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
}

.cta-button:hover {
  background: var(--color-primary-hover);
  color: #fff;
  text-decoration: none;
}

/* Services - card layout */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.service-card {
  background: var(--color-bg-section);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.service-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.service-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.and-more {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--color-bg);
  border-radius: 8px;
  text-align: center;
}

.and-more p {
  margin: 0;
  color: var(--color-text-muted);
}

.and-more a {
  font-weight: 600;
}

/* Contact */
#contact p {
  margin: 0 0 0.5rem;
  color: var(--color-text-muted);
}

#contact .email {
  font-weight: 600;
  font-size: 1.125rem;
}

#contact .location {
  margin-top: 1rem;
  font-size: 0.9375rem;
}

/* Contact form */
.contact-form {
  margin-top: 1.5rem;
  max-width: 28rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-form label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.contact-form input,
.contact-form textarea {
  padding: 0.5rem 0.75rem;
  font: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg-section);
}

.contact-form textarea {
  resize: vertical;
  min-height: 4rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 0;
}

.contact-submit {
  margin-top: 0.5rem;
  padding: 0.75rem 1.5rem;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.contact-submit:hover {
  background: var(--color-primary-hover);
}

/* Footer - unified */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 1.5rem 2rem;
  margin-top: 2rem;
  background: var(--color-bg-section);
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.site-logo-footer {
  height: 2.5rem;
  width: auto;
  margin-bottom: 0.5rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.site-footer-inner p {
  margin: 0;
}

.site-footer .site-title {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.footer-links {
  margin-top: 0.75rem;
}

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

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