/* ==========================================================================
   MAQINA — Industrial Automation / Robotics / Systems Integration
   Design tokens + component system
   ========================================================================== */

:root {
  /* Brand — primary */
  --maqina-emerald: #1FC480;
  --maqina-emerald-dark: #17a06a;
  --maqina-emerald-deep: #0f3d2c;
  --maqina-black: #151B19;
  --maqina-white: #FFFFFF;

  /* Brand — secondary (use sparingly) */
  --maqina-gold: #D2C54F;
  --maqina-orange: #FF4E2B;
  --maqina-brown: #7A4419;

  /* Neutrals derived from the brand black, for steel/industrial surfaces */
  --gray-050: #F6F8F7;
  --gray-100: #EAEFED;
  --gray-200: #D9E1DE;
  --gray-300: #B9C6C1;
  --gray-500: #74827D;
  --gray-600: #4C5652;
  --gray-700: #313A37;
  --gray-800: #1F2624;
  --gray-900: #101513;

  /* Typography */
  --font-heading: 'Conthrax', 'Poppins', sans-serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout */
  --container-max: 1320px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-md: 0 10px 30px rgba(15, 20, 18, 0.12);
  --shadow-lg: 0 20px 60px rgba(15, 20, 18, 0.22);

  color-scheme: light;
}

/* Conthrax is MAQINA's brand heading font. No licensed webfont file is bundled
   in this repo (see ASSET-REQUIREMENTS.md). When fonts/conthrax.woff2 is
   supplied, uncomment this block — every heading picks it up automatically
   via the --font-heading variable, no other change required.
@font-face {
  font-family: 'Conthrax';
  src: url('../fonts/conthrax.woff2') format('woff2');
  font-weight: 400 700;
  font-display: swap;
}
*/

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body {
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--maqina-white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6, .font-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--maqina-black);
}

a { color: var(--maqina-emerald-dark); text-decoration: none; }
a:hover { color: var(--maqina-emerald); }

img { max-width: 100%; height: auto; }

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

/* Focus visibility — never rely on color alone */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible,
select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--maqina-emerald);
  outline-offset: 2px;
}

/* ==========================================================================
   Skip link
   ========================================================================== */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -60px;
  background: var(--maqina-black);
  color: var(--maqina-white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 2000;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 1rem; color: var(--maqina-white); }

/* ==========================================================================
   Eyebrow / badges
   ========================================================================== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--maqina-emerald);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--maqina-emerald);
  display: inline-block;
}

.badge-maqina {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: rgba(31, 196, 128, 0.12);
  color: var(--maqina-emerald-dark);
  border: 1px solid rgba(31, 196, 128, 0.35);
}
.badge-maqina.badge-coming-soon {
  background: rgba(210, 197, 79, 0.15);
  color: #8a7f1f;
  border-color: rgba(210, 197, 79, 0.5);
}
.badge-maqina.badge-dark {
  background: rgba(255,255,255,0.08);
  color: var(--maqina-white);
  border-color: rgba(255,255,255,0.25);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn { font-family: var(--font-heading); font-weight: 600; letter-spacing: 0.02em; border-radius: 999px; padding: 0.85rem 1.75rem; transition: all 0.2s ease; border: 2px solid transparent; }

.btn-maqina-primary { background: var(--maqina-emerald); color: var(--maqina-black); }
.btn-maqina-primary:hover { background: var(--maqina-emerald-dark); color: var(--maqina-black); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-maqina-outline-light { background: transparent; border-color: rgba(255,255,255,0.5); color: var(--maqina-white); }
.btn-maqina-outline-light:hover { background: rgba(255,255,255,0.1); border-color: var(--maqina-white); color: var(--maqina-white); transform: translateY(-2px); }

.btn-maqina-outline-dark { background: transparent; border-color: var(--maqina-black); color: var(--maqina-black); }
.btn-maqina-outline-dark:hover { background: var(--maqina-black); color: var(--maqina-white); transform: translateY(-2px); }

.btn-maqina-text { font-family: var(--font-heading); font-weight: 600; color: var(--maqina-emerald-dark); display: inline-flex; align-items: center; gap: 0.4rem; }
.btn-maqina-text:hover { color: var(--maqina-emerald); gap: 0.6rem; }
.btn-maqina-text.on-dark { color: var(--maqina-emerald); }

/* ==========================================================================
   Layout bands
   ========================================================================== */
.band { padding: 5rem 0; }
.band-tight { padding: 3.5rem 0; }
.band-light { background: var(--maqina-white); }
.band-subtle { background: var(--gray-050); }
.band-dark {
  background: radial-gradient(circle at 15% 20%, rgba(31,196,128,0.14), transparent 45%), var(--maqina-black);
  color: var(--gray-100);
}
.band-dark h1, .band-dark h2, .band-dark h3, .band-dark h4, .band-dark h5 { color: var(--maqina-white); }
.band-dark p { color: var(--gray-300); }

/* subtle technical grid texture for dark bands */
.grid-texture { position: relative; overflow: hidden; }
.grid-texture::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 85%);
  pointer-events: none;
}

.section-head { max-width: 720px; margin-bottom: 3rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ==========================================================================
   Navbar
   ========================================================================== */
.maqina-navbar {
  background: var(--maqina-black);
  padding: 0.85rem 0;
  position: sticky;
  top: 0;
  z-index: 1030;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.maqina-navbar .navbar-brand img { height: 38px; width: auto; }
.maqina-navbar .nav-link {
  color: var(--gray-200) !important;
  font-family: var(--font-heading);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.6rem 1rem !important;
}
.maqina-navbar .nav-link:hover,
.maqina-navbar .nav-link:focus,
.maqina-navbar .nav-link.active { color: var(--maqina-emerald) !important; }
.maqina-navbar .dropdown-menu {
  background: var(--maqina-black);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 0.5rem;
}
.maqina-navbar .dropdown-item {
  color: var(--gray-200);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.9rem;
}
.maqina-navbar .dropdown-item:hover,
.maqina-navbar .dropdown-item:focus { background: rgba(31,196,128,0.12); color: var(--maqina-emerald); }
.maqina-navbar .navbar-toggler { border-color: rgba(255,255,255,0.4); }
.maqina-navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.nav-cta { margin-left: 0.5rem; }

@media (max-width: 991.98px) {
  .maqina-navbar .navbar-collapse { padding-top: 1rem; }
  .nav-cta { margin: 0.75rem 0 0.25rem; display: block; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero-maqina {
  background: radial-gradient(circle at 80% 0%, rgba(31,196,128,0.18), transparent 50%), var(--maqina-black);
  color: var(--maqina-white);
  padding: 5rem 0 4.5rem;
  position: relative;
  overflow: hidden;
}
.hero-maqina h1 { color: var(--maqina-white); font-size: clamp(2.1rem, 4.2vw, 3.4rem); line-height: 1.1; margin: 1rem 0 1.25rem; }
.hero-maqina .lead { color: var(--gray-300); font-size: 1.15rem; max-width: 620px; }
.hero-maqina .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; align-items: center; }
.hero-maqina .hero-tertiary { display: block; margin-top: 1.25rem; color: var(--gray-300); font-size: 0.92rem; }
.hero-maqina .hero-tertiary a { color: var(--maqina-emerald); font-weight: 600; }

.page-hero {
  background: var(--maqina-black);
  color: var(--maqina-white);
  padding: 3.5rem 0;
}
.page-hero h1 { color: var(--maqina-white); font-size: clamp(1.9rem, 3.4vw, 2.7rem); margin: 0.75rem 0 1rem; }
.page-hero p { color: var(--gray-300); max-width: 680px; margin-bottom: 0; }

.breadcrumb-maqina { font-size: 0.82rem; color: var(--gray-300); margin-bottom: 1rem; }
.breadcrumb-maqina a { color: var(--gray-300); }
.breadcrumb-maqina a:hover { color: var(--maqina-emerald); }
.breadcrumb-maqina .sep { margin: 0 0.4rem; opacity: 0.5; }

/* ==========================================================================
   Machine-to-software process chain
   ========================================================================== */
.process-chain {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 1rem 0.25rem 1.5rem;
  scrollbar-width: thin;
}
.process-step {
  flex: 0 0 auto;
  min-width: 148px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
  position: relative;
}
.process-step .step-num {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  color: var(--maqina-emerald);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.5rem;
}
.process-step .step-label { color: var(--maqina-white); font-family: var(--font-heading); font-size: 0.95rem; font-weight: 700; }
.process-arrow { flex: 0 0 auto; display: flex; align-items: center; color: var(--maqina-emerald); font-size: 1.3rem; opacity: 0.7; }
@media (max-width: 767.98px) {
  .process-chain { justify-content: flex-start; }
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card-maqina {
  background: var(--maqina-white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  height: 100%;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card-maqina:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(31,196,128,0.35); }
.card-maqina .card-icon {
  width: 52px; height: 52px; border-radius: var(--radius-sm);
  background: rgba(31,196,128,0.12); color: var(--maqina-emerald-dark);
  display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 1.25rem;
}
.card-maqina h3, .card-maqina h5 { font-size: 1.1rem; margin-bottom: 0.75rem; }
.card-maqina p { color: var(--gray-600); margin-bottom: 1rem; font-size: 0.95rem; }

.path-card {
  background: var(--gray-900);
  color: var(--maqina-white);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.85rem;
  height: 100%;
  border: 1px solid rgba(255,255,255,0.08);
}
.path-card h3 { color: var(--maqina-white); font-size: 1.25rem; }
.path-card p { color: var(--gray-300); }

/* ==========================================================================
   Media / generated image containers
   ========================================================================== */
.media-frame { border-radius: var(--radius-lg); overflow: hidden; background: var(--gray-800); position: relative; }
.media-frame img { display: block; width: 100%; height: 100%; object-fit: cover; }
.ratio-16x9-frame { aspect-ratio: 16 / 9; }
.ratio-4x3-frame { aspect-ratio: 4 / 3; }
.ratio-1x1-frame { aspect-ratio: 1 / 1; }
.ratio-3x4-frame { aspect-ratio: 3 / 4; }
.media-caption { font-size: 0.82rem; color: var(--gray-500); margin-top: 0.6rem; }

.concept-note {
  background: rgba(210,197,79,0.12);
  border: 1px solid rgba(210,197,79,0.4);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.2rem;
  font-size: 0.9rem;
  color: #6b621a;
  margin-bottom: 2rem;
}
.band-dark .concept-note { color: #e9dd8a; background: rgba(210,197,79,0.1); border-color: rgba(210,197,79,0.35); }

/* ==========================================================================
   Checklists (problem indicators, resources)
   ========================================================================== */
.check-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 0.9rem; }
.check-item { display: flex; align-items: flex-start; gap: 0.65rem; font-size: 0.95rem; color: var(--gray-700); }
.check-item::before {
  content: "";
  flex: 0 0 auto;
  width: 9px; height: 9px; border-radius: 2px;
  background: var(--maqina-emerald);
  margin-top: 0.45rem;
}
.band-dark .check-item { color: var(--gray-200); }

/* ==========================================================================
   Platform / technology strip
   ========================================================================== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1.25rem;
}
.platform-tile {
  background: var(--maqina-white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 1.25rem 1rem;
  gap: 0.6rem;
  height: 100%;
}
.platform-tile img { max-height: 42px; width: auto; object-fit: contain; }
.platform-tile span { font-family: var(--font-heading); font-size: 0.78rem; color: var(--gray-600); text-align: center; }

/* ==========================================================================
   Forms
   ========================================================================== */
.form-maqina .form-control,
.form-maqina .form-select {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
}
.form-maqina .form-control:focus,
.form-maqina .form-select:focus {
  border-color: var(--maqina-emerald);
  box-shadow: 0 0 0 0.2rem rgba(31,196,128,0.2);
}
.form-maqina label { font-size: 0.85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 0.35rem; }
.form-maqina .form-hint { font-size: 0.8rem; color: var(--gray-500); }
.form-maqina fieldset { border: none; padding: 0; margin: 0 0 1.75rem; }
.form-maqina legend { font-family: var(--font-heading); font-size: 1rem; font-weight: 700; color: var(--maqina-black); padding: 0; margin-bottom: 0.75rem; }
.form-check-maqina { border: 1px solid var(--gray-200); border-radius: var(--radius-sm); padding: 0.65rem 0.9rem 0.65rem 2.4rem; margin-bottom: 0.5rem; }
.form-check-maqina label { font-weight: 400; margin: 0; }

/* Honeypot — hidden from sighted and keyboard users, still reachable by bots */
.hp-field { position: absolute !important; left: -9999px !important; top: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-status { border-radius: var(--radius-md); padding: 1rem 1.25rem; font-size: 0.92rem; margin-top: 1.25rem; display: none; }
.form-status.is-visible { display: block; }
.form-status.status-loading { background: var(--gray-050); color: var(--gray-700); border: 1px solid var(--gray-200); }
.form-status.status-success { background: rgba(31,196,128,0.1); color: #0f6b45; border: 1px solid rgba(31,196,128,0.4); }
.form-status.status-error { background: rgba(255,78,43,0.08); color: #a8320f; border: 1px solid rgba(255,78,43,0.35); }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-maqina { background: var(--maqina-black); color: var(--gray-300); padding: 4rem 0 1.5rem; }
.footer-maqina h6 { color: var(--maqina-white); font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 1rem; }
.footer-maqina a { color: var(--gray-300); }
.footer-maqina a:hover { color: var(--maqina-emerald); }
.footer-maqina ul { list-style: none; padding: 0; margin: 0; }
.footer-maqina li { margin-bottom: 0.55rem; font-size: 0.92rem; }
.footer-maqina .footer-logo img { height: 34px; margin-bottom: 1rem; }
.footer-maqina .footer-contact { font-size: 0.92rem; }
.footer-maqina .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 2.5rem; padding-top: 1.5rem; font-size: 0.82rem; color: var(--gray-500); }

/* ==========================================================================
   Back to top
   ========================================================================== */
.back-to-top {
  position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 1040;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--maqina-emerald); color: var(--maqina-black);
  display: none; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
}
.back-to-top.show { display: flex; }
.back-to-top:hover { background: var(--maqina-emerald-dark); color: var(--maqina-black); }

/* ==========================================================================
   Fade-in utility (IntersectionObserver driven, see js/main.js)
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   404
   ========================================================================== */
.error-page { min-height: 60vh; display: flex; align-items: center; }
.error-code { font-family: var(--font-heading); font-size: clamp(4rem, 12vw, 8rem); color: var(--maqina-emerald); line-height: 1; }