/* ================================================================
   MekaOps — Production CSS
   Architecture: custom properties -> reset -> layout -> components
   ================================================================ */

/* ----------------------------------------------------------------
   1. DESIGN TOKENS
   ---------------------------------------------------------------- */
:root {
  /* Brand palette */
  --color-navy:        #06111f;
  --color-navy-mid:    #0a1b31;
  --color-navy-light:  #0f2540;
  --color-blue:        #1683ff;
  --color-blue-hover:  #0b63ce;
  --color-blue-muted:  rgba(22, 131, 255, 0.15);

  /* Surface & text */
  --color-surface:     #f8fafc;
  --color-surface-alt: #eef4ff;
  --color-card:        #ffffff;
  --color-text:        #0f172a;
  --color-muted:       #5b6472;
  --color-subtle:      #94a3b8;
  --color-border:      #e2e8f0;
  --color-white:       #ffffff;

  /* Typography scale */
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;

  /* Spacing scale (8-point grid) */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Radii */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  28px;

  /* Shadows */
  --shadow-card:   0 4px 24px rgba(15, 23, 42, 0.07);
  --shadow-card-hover: 0 12px 40px rgba(15, 23, 42, 0.13);
  --shadow-panel:  0 24px 60px rgba(15, 23, 42, 0.18);

  /* Layout */
  --max-width: 1180px;
  --nav-height: 72px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
}

/* ----------------------------------------------------------------
   2. RESET
   ---------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

/* Visible focus outline (keyboard nav) */
:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

.eyebrow {
  display: inline-block;
  color: var(--color-blue);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin: 0 0 var(--space-3);
}

/* ----------------------------------------------------------------
   4. BUTTONS
   ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color     var(--duration-fast) var(--ease-out),
    box-shadow       var(--duration-fast) var(--ease-out),
    transform        var(--duration-fast) var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  border-color: var(--color-blue);
}

.btn-primary:hover {
  background-color: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
  box-shadow: 0 8px 24px rgba(22, 131, 255, 0.35);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-blue);
  border-color: var(--color-blue);
}

.btn-outline:hover {
  background-color: var(--color-blue-muted);
}

.btn-lg {
  min-height: 56px;
  padding: 0 var(--space-10);
  font-size: var(--text-lg);
}

/* ----------------------------------------------------------------
   5. HEADER + NAV
   ---------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.nav-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-white);
  font-weight: 800;
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.brand-name {
  color: var(--color-white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.nav-cta {
  background-color: var(--color-blue);
  color: var(--color-white) !important;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  transition:
    background-color var(--duration-fast) var(--ease-out),
    box-shadow       var(--duration-fast) var(--ease-out) !important;
}

.nav-cta:hover {
  background-color: var(--color-blue-hover) !important;
  box-shadow: 0 4px 16px rgba(22, 131, 255, 0.4);
}

/* Hamburger */
.menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.menu-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.menu-btn .icon-close { display: none; }
.menu-btn[aria-expanded="true"] .icon-menu  { display: none; }
.menu-btn[aria-expanded="true"] .icon-close { display: block; }

/* ----------------------------------------------------------------
   6. HERO
   ---------------------------------------------------------------- */
.hero {
  position: relative;
  background:
    radial-gradient(ellipse at 78% 25%, rgba(22, 131, 255, 0.22) 0%, transparent 55%),
    linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-mid) 100%);
  color: var(--color-white);
  overflow: hidden;
}

.hero-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-24) var(--space-6) var(--space-20);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: var(--space-16);
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.8rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.hero-accent {
  background: linear-gradient(90deg, var(--color-blue), #60a5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-body {
  max-width: 540px;
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-bottom: var(--space-10);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Hero panel */
.hero-panel {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: var(--shadow-panel);
}

.hero-panel-logo {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
}

.hero-panel-tagline {
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--text-base);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.hero-panel-list {
  text-align: left;
  width: 100%;
}

.hero-panel-list li {
  padding: var(--space-2) 0;
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--text-sm);
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  padding-left: var(--space-5);
  position: relative;
}

.hero-panel-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-blue);
}

.hero-panel-list li:last-child {
  border-bottom: none;
}

/* Circuit trace — signature element */
.circuit-trace {
  width: 100%;
  height: 32px;
  opacity: 0.6;
}

.circuit-trace svg {
  width: 100%;
  height: 100%;
}

.trace-path {
  stroke-dasharray: 2000;
  stroke-dashoffset: 2000;
  animation: trace-draw 2.4s var(--ease-out) 0.4s forwards;
}

@keyframes trace-draw {
  to { stroke-dashoffset: 0; }
}

/* ----------------------------------------------------------------
   7. TRUSTED BAR
   ---------------------------------------------------------------- */
.trusted-bar {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6) var(--space-6);
}

.trusted-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.trusted-label {
  color: var(--color-subtle);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  white-space: nowrap;
  flex-shrink: 0;
}

.trusted-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.trusted-list li {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #475569;
  padding: var(--space-1) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

/* ----------------------------------------------------------------
   8. SECTION SHELL
   ---------------------------------------------------------------- */
.section {
  padding: var(--space-24) 0;
}

.section-alt {
  background-color: var(--color-surface-alt);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-header {
  max-width: 720px;
  margin-bottom: var(--space-12);
}

.section-header h2 {
  font-size: clamp(var(--text-3xl), 3vw, var(--text-4xl));
  margin-bottom: var(--space-4);
}

.section-intro {
  color: var(--color-muted);
  font-size: var(--text-lg);
  line-height: 1.7;
}

/* ----------------------------------------------------------------
   9. SERVICE CARDS
   ---------------------------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition:
    box-shadow var(--duration-base) var(--ease-out),
    transform  var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  border-color: rgba(22, 131, 255, 0.2);
}

.card-icon {
  width: 44px;
  height: 44px;
  background: var(--color-blue-muted);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  flex-shrink: 0;
}

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}

.card p {
  color: var(--color-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-blue);
  font-size: var(--text-sm);
  font-weight: 700;
  transition: gap var(--duration-fast) var(--ease-out);
  margin-top: auto;
  padding-top: var(--space-2);
}

.card-link:hover {
  gap: var(--space-2);
}

.card-link::after {
  content: '→';
}

/* ----------------------------------------------------------------
   10. WHY MEKAOPS SPLIT
   ---------------------------------------------------------------- */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: var(--space-16);
  align-items: start;
}

.split-copy h2 {
  font-size: clamp(var(--text-3xl), 3vw, var(--text-4xl));
  margin-bottom: var(--space-6);
}

.split-copy p {
  color: var(--color-muted);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.split-copy .btn {
  margin-top: var(--space-4);
}

.proof-box {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
}

.proof-box h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.proof-box ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.proof-box li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

.proof-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-blue);
  flex-shrink: 0;
}

/* ----------------------------------------------------------------
   11. SOLUTIONS
   ---------------------------------------------------------------- */
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.solutions-header h2 {
  font-size: clamp(var(--text-3xl), 3vw, var(--text-4xl));
  margin-bottom: var(--space-4);
}

.solutions-header p {
  color: var(--color-muted);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.solution-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue), #60a5ff);
}

.badge {
  display: inline-block;
  background: var(--color-blue-muted);
  color: var(--color-blue);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  width: fit-content;
}

.solution-card h3 {
  font-size: var(--text-xl);
  color: var(--color-text);
}

.solution-card p {
  color: var(--color-muted);
  font-size: var(--text-base);
  line-height: 1.7;
}

/* ----------------------------------------------------------------
   12. CONTACT STRIP
   ---------------------------------------------------------------- */
.contact-strip {
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-mid));
  padding: var(--space-24) var(--space-6);
}

.contact-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
  flex-wrap: wrap;
}

.contact-copy h2 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  color: var(--color-white);
  max-width: 680px;
  margin-bottom: var(--space-4);
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--text-lg);
}

/* ----------------------------------------------------------------
   13. FOOTER
   ---------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy);
  color: rgba(255, 255, 255, 0.65);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-16) var(--space-6) var(--space-10);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-10);
}

.footer-brand .footer-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
  object-fit: cover;
}

.footer-brand p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

.footer-nav h4,
.footer-contact h4 {
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-white);
  margin-bottom: var(--space-5);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-contact p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: var(--space-5);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.copyright {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* ----------------------------------------------------------------
   14. RESPONSIVE
   ---------------------------------------------------------------- */
@media (max-width: 1024px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  /* Nav */
  .menu-btn {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-navy-mid);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-6);
    gap: var(--space-1);
    box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: var(--space-3) 0;
    font-size: var(--text-base);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-cta {
    padding: var(--space-3) 0 !important;
    background: none !important;
    box-shadow: none !important;
  }

  /* Hero */
  .hero-grid {
    grid-template-columns: 1fr;
    padding-top: var(--space-16);
    padding-bottom: var(--space-12);
    gap: var(--space-10);
  }

  .hero-panel {
    display: none;
  }

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

  /* Why */
  .split-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Solutions */
  .solutions-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Contact */
  .contact-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-copy h1 {
    font-size: 2.2rem;
  }

  .trusted-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }

  .btn-lg {
    width: 100%;
  }
}