/* codinggang — shared component styles */
@import url('tokens.css');

/* Fonts via jsDelivr (@fontsource — not Google Fonts CDN) */
@import url('https://cdn.jsdelivr.net/npm/@fontsource/ibm-plex-sans@5/latin.css');
@import url('https://cdn.jsdelivr.net/npm/@fontsource/ibm-plex-sans-condensed@5/latin.css');

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0ms !important; animation-duration: 0ms !important; }
}
body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: var(--text-base);
  color: var(--color-neutral-900);
  background: var(--color-neutral-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-px-desktop);
  padding-right: var(--container-px-desktop);
}
@media (max-width: 1279px) {
  .container { padding-left: var(--container-px-tablet); padding-right: var(--container-px-tablet); }
}
@media (max-width: 767px) {
  .container { padding-left: var(--container-px-mobile); padding-right: var(--container-px-mobile); }
}

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 72px;
  background: var(--color-neutral-0);
  border-bottom: 1px solid transparent;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.site-header.scrolled {
  border-bottom-color: var(--color-neutral-200);
  box-shadow: 0 1px 0 var(--color-neutral-200);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media (max-width: 767px) {
  .site-header { height: 60px; }
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  min-width: 180px;
}
.logo-bar {
  width: 3.5px;
  height: 44px;
  background: var(--color-accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.logo-wordmark {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-weight: 700;
  font-size: 27px;
  letter-spacing: -0.015em;
  color: var(--color-primary-900);
  line-height: 1;
}
@media (max-width: 767px) {
  .logo { min-width: 120px; }
  .logo-bar { height: 32px; }
  .logo-wordmark { font-size: 20px; }
}

/* Nav links (desktop) */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}
.nav-links a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-neutral-700);
  text-decoration: none;
  transition: color 100ms ease;
}
.nav-links a:hover { color: var(--color-neutral-900); }
.nav-links a.active { color: var(--color-primary-900); font-weight: 700; }
@media (max-width: 1023px) {
  .nav-links { display: none; }
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary-900);
  border-radius: 1px;
  transition: transform 150ms ease, opacity 150ms ease;
}
@media (max-width: 1023px) {
  .hamburger { display: flex; }
}

/* Nav Drawer */
.nav-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 280px;
  background: var(--color-primary-900);
  z-index: 100;
  transform: translateX(100%);
  transition: transform 200ms ease-out;
  padding: var(--space-8) var(--space-8) var(--space-12);
  display: flex;
  flex-direction: column;
}
.nav-drawer.open { transform: translateX(0); }
.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
  opacity: 0;
  transition: opacity 200ms ease-out;
}
.nav-backdrop.open { opacity: 1; }
body.drawer-open { overflow: hidden; }
.drawer-close {
  align-self: flex-end;
  background: none;
  border: none;
  color: var(--color-neutral-0);
  font-size: 24px;
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.drawer-nav {
  list-style: none;
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  flex: 1;
}
.drawer-nav a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-neutral-0);
  text-decoration: none;
}
.drawer-cta {
  margin-top: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: var(--text-base);
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
  white-space: nowrap;
  outline-offset: 2px;
}
.btn:focus-visible { outline: 2px solid var(--color-accent-light); }
.btn-primary {
  background: var(--color-primary-900);
  color: #fff;
  border: 1.5px solid var(--color-primary-900);
  height: 48px;
  padding: 0 var(--space-6);
}
.btn-primary:hover { background: var(--color-primary-800); border-color: var(--color-primary-800); }
.btn-outline {
  background: transparent;
  color: var(--color-primary-900);
  border: 1.5px solid var(--color-primary-900);
  height: 44px;
  padding: 0 var(--space-6);
}
.btn-outline:hover { background: var(--color-primary-900); color: #fff; }
.btn-accent {
  background: var(--color-accent);
  color: #fff;
  border: none;
  height: 48px;
  padding: 0 var(--space-6);
}
.btn-accent:hover { background: var(--color-accent-light); }
.btn-sm { height: 36px; padding: 0 var(--space-4); font-size: var(--text-sm); }
.btn-full { width: 100%; }

/* Section base */
section { padding: var(--space-20) 0; }
@media (max-width: 767px) { section { padding: var(--space-12) 0; } }

/* Section header */
.section-eyebrow {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-3);
}
.section-heading {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-weight: 700;
  font-size: var(--text-2xl);
  color: var(--color-primary-900);
  line-height: 1.1;
  max-width: 720px;
}
.section-heading-center { text-align: center; margin-left: auto; margin-right: auto; }
.section-body {
  margin-top: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-neutral-700);
  max-width: 680px;
  line-height: 1.7;
}
.section-body-center { text-align: center; margin-left: auto; margin-right: auto; }
@media (max-width: 767px) {
  .section-heading { font-size: var(--text-xl); }
}

/* Footer */
.site-footer {
  background: var(--color-primary-950);
  padding: var(--space-12) 0;
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.footer-logo .logo-wordmark { color: var(--color-neutral-0); }
.footer-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-neutral-100);
  text-decoration: none;
  transition: color 100ms ease;
}
.footer-links a:hover { color: var(--color-neutral-0); }
.footer-micro {
  width: 100%;
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
  margin-top: var(--space-4);
}
@media (max-width: 767px) {
  .site-footer .container { flex-direction: column; align-items: flex-start; }
  .footer-links { gap: var(--space-4); }
}

/* Utility: accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* Global CTA Banner */
.cta-banner {
  background: var(--color-primary-900);
  padding: var(--space-16) 0;
  text-align: center;
}
.cta-banner h2 {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-weight: 700;
  font-size: var(--text-2xl);
  color: #fff;
  margin-bottom: var(--space-4);
}
.cta-banner p {
  font-size: var(--text-base);
  color: var(--color-neutral-100);
  margin-bottom: var(--space-8);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}