/* ==========================================================================
   Akron Labs - Base Stylesheet
   Shared variables, navigation, buttons, footer, and accessibility styles.
   ========================================================================== */

/* CSS Variables */
:root {
  --black: #0e0d0b;
  --charcoal: #1b1917;
  --graphite: rgba(44, 41, 38, 0.5);
  --steel: #3e3a35;
  --pewter: #5c5750;
  --silver: #8e887f;
  --fog: #b9b3a9;
  --cloud: #e3ddd5;
  --white: #faf7f2;

  --copper: #C2844A;
  --copper-light: #D9A76A;
  --copper-glow: rgba(194, 132, 74, 0.15);
  --copper-intense: rgba(194, 132, 74, 0.3);

  --font-display: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-body: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* Smoother glyph rendering on dark backgrounds */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  background: var(--black);
  color: var(--fog);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  font-optical-sizing: auto;
}

/* Tabular numerals wherever numbers should align vertically or look stable */
.stat-value,
.metric-value,
.stat-label,
.blog-card-date,
.blog-card-reading-time,
.blog-date,
.blog-post-meta,
.service-number,
.process-number,
.blog-card-meta {
  font-variant-numeric: tabular-nums;
}

::selection {
  background: var(--copper);
  color: var(--black);
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 1rem 2rem;
  background: var(--copper);
  color: var(--black);
  font-family: var(--font-display);
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  z-index: 10001;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--copper-light);
  outline-offset: 2px;
}

/* ==========================================================================
   Scroll to Top Button
   ========================================================================== */

.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--charcoal);
  border: 1px solid var(--graphite);
  border-radius: 12px;
  color: var(--copper);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease,
    color 0.3s ease,
    opacity 0.3s ease,
    transform 0.3s ease,
    visibility 0.3s ease;
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--black);
  transform: translateY(-2px);
}

.scroll-top:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

.scroll-top svg {
  width: 24px;
  height: 24px;
}


/* ==========================================================================
   Navigation
   ========================================================================== */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1002;
  background: transparent;
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease,
    padding 0.3s ease;
}

nav.scrolled {
  background-color: rgba(14, 13, 11, 0.98);
  padding: 1rem 4rem;
  border-bottom: 1px solid var(--graphite);
}

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.logo-mark {
  width: 42px;
  height: 42px;
  background: linear-gradient(
    135deg,
    var(--copper) 0%,
    var(--copper-light) 100%
  );
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.logo-mark::before {
  content: 'A';
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--black);
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--silver);
  text-decoration: none;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a:not(.nav-cta):hover,
.nav-links a:not(.nav-cta).active {
  color: var(--white);
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--copper);
  transition: width 0.3s ease;
}

.nav-links a:not(.nav-cta):hover::after,
.nav-links a:not(.nav-cta).active::after {
  width: 100%;
}

.nav-cta {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: 1px solid var(--copper);
  color: var(--copper);
  border-radius: 6px;
  font-weight: 600;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

.nav-cta:hover {
  background: var(--copper);
  color: var(--black);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.75rem;
  width: 48px;
  height: 48px;
  position: relative;
  z-index: 1001;
}

.mobile-menu-btn span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition:
    opacity 0.3s ease,
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(13, 13, 13, 0.98);
  z-index: 1000;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
  transition:
    color 0.3s ease,
    opacity 0.3s ease,
    transform 0.3s ease;
  transform: translateY(20px);
  opacity: 0;
}

.mobile-nav.active a {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav.active a:nth-child(1) {
  transition-delay: 0.1s;
}
.mobile-nav.active a:nth-child(2) {
  transition-delay: 0.15s;
}
.mobile-nav.active a:nth-child(3) {
  transition-delay: 0.2s;
}
.mobile-nav.active a:nth-child(4) {
  transition-delay: 0.25s;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--copper);
  transform: scale(1.05);
}


/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease,
    color 0.3s ease,
    transform 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--copper) 0%,
    var(--copper-light) 100%
  );
  color: var(--black);
  box-shadow: 0 4px 20px var(--copper-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--copper-intense);
}

.btn-secondary {
  background: var(--charcoal);
  color: var(--cloud);
  border: 1px solid var(--graphite);
}

.btn-secondary:hover {
  background: var(--graphite);
  border-color: var(--steel);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}

.btn:hover svg {
  transform: translateX(4px);
}

/* ==========================================================================
   Stats Bar
   ========================================================================== */

.stats-bar {
  margin-top: 5rem;
  display: flex;
  gap: 4rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--pewter);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Section Styles
   ========================================================================== */

section {
  position: relative;
  z-index: 1;
}

.section-header {
  margin-bottom: 4rem;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--copper);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
}

.section-eyebrow::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.25rem;
  height: 1px;
  background: var(--copper);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1.15;
}


/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  padding: 3rem 4rem;
  background: var(--black);
  border-top: 1px solid var(--graphite);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  text-decoration: none;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--pewter);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.copyright {
  font-size: 0.85rem;
  color: var(--pewter);
}


/* ==========================================================================
   Responsive Shared Shell
   ========================================================================== */

@media (max-width: 968px) {
  nav {
    padding: 1.25rem 2rem;
  }

  nav.scrolled {
    padding: 1rem 2rem;
  }

  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-left {
    flex-direction: column;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  footer {
    padding: 2rem 1.25rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}