/* =================================================================
   Selety — styles.css
   Vanilla CSS. Bento Grid Showcase + Trust & Authority direction
   (via ui-ux-pro-max). Mobile-first, responsive, WCAG AA focused.
   ================================================================= */

/* ----------------------------- Tokens ----------------------------- */
:root {
  /* Brand */
  --violet: #6215EE;
  --violet-dark: #4E11BE;
  --violet-light: #8B4FF2;

  /* Surfaces */
  --bg-dark: #0E0E12;
  --bg-darker: #09090C;
  --white: #FFFFFF;
  --neutral-50: #F7F7FA;
  --neutral-200: #E5E5EC;
  --neutral-500: #6B6B76;

  /* Text */
  --text: #1A1A22;
  --text-muted: #6B6B76;
  --text-on-dark: #F2F2F6;
  --text-on-dark-muted: #B7B7C4;

  /* Glass (on dark) */
  --glass: rgba(255, 255, 255, 0.04);
  --glass-strong: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.10);

  /* Type — "Tech Startup" pairing */
  --font-body: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-head: "Space Grotesk", var(--font-body);

  /* Shape & motion */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(14, 14, 18, 0.06), 0 2px 8px rgba(14, 14, 18, 0.05);
  --shadow: 0 12px 34px rgba(14, 14, 18, 0.10);
  --shadow-violet: 0 14px 40px rgba(98, 21, 238, 0.30);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Layout */
  --container: 1160px;
  --header-h: 72px;
}

/* ----------------------------- Reset ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html.i18n-pending body { visibility: hidden; }

img, svg { display: block; max-width: 100%; }
a { color: var(--violet-dark); text-decoration: none; }
a:hover { color: var(--violet); }
ul { list-style: none; margin: 0; padding: 0; }
button { font: inherit; cursor: pointer; }

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 0;
}
p { margin: 0; }

/* ------------------------- Accessibility -------------------------- */
:focus-visible {
  outline: 3px solid var(--violet-light);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 12px; top: -60px;
  z-index: 200;
  background: var(--violet);
  color: var(--white);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; color: var(--white); }

/* ----------------------------- Layout ----------------------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 20px; }

.section { padding-block: clamp(64px, 9vw, 112px); }
.section-alt { background: var(--neutral-50); }
.section-dark { background: var(--bg-dark); color: var(--text-on-dark); }

.section-head { max-width: 660px; margin-bottom: 48px; }
.eyebrow {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 12px;
}
.section-dark .eyebrow { color: var(--violet-light); }
.section h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
.section-lead { margin-top: 16px; font-size: 1.12rem; color: var(--text-muted); }
.section-dark .section-lead { color: var(--text-on-dark-muted); }

/* ----------------------------- Buttons ---------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 600; font-size: 0.96rem; line-height: 1;
  text-align: center;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease),
              box-shadow 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-lg { padding: 16px 30px; font-size: 1.02rem; }
.btn-sm { padding: 10px 18px; font-size: 0.9rem; }
.btn-block { width: 100%; }

.btn-primary { background: var(--violet); color: var(--white); box-shadow: var(--shadow-violet); }
.btn-primary:hover { background: var(--violet-dark); color: var(--white); }
.btn-ghost { background: transparent; color: var(--text-on-dark); border-color: rgba(255,255,255,0.25); }
.btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.5); color: var(--white); }

/* ----------------------------- Header ----------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(27, 11, 58);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(139, 79, 242, 0.22);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--white); font-family: var(--font-head); font-weight: 700; font-size: 1.38rem; letter-spacing: -0.02em; }
.brand:hover { color: var(--white); }
.brand-logo { height: 30px; width: auto; }
.footer-logo { height: 50px; }

.main-nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 28px; }
.nav-list a { color: var(--text-on-dark-muted); font-weight: 500; font-size: 0.98rem; position: relative; padding-block: 6px; transition: color 0.2s var(--ease); }
.nav-list a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px; background: var(--violet-light); transform: scaleX(0); transform-origin: left; transition: transform 0.25s var(--ease); }
.nav-list a:hover, .nav-list a.is-active { color: var(--white); }
.nav-list a:hover::after, .nav-list a.is-active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-switch { display: inline-flex; align-items: center; gap: 4px; }
.lang-btn { background: none; border: none; color: var(--text-on-dark-muted); font-family: var(--font-head); font-weight: 600; font-size: 0.88rem; padding: 6px; border-radius: 6px; transition: color 0.2s var(--ease); }
.lang-btn[aria-pressed="true"] { color: var(--white); }
.lang-btn:hover { color: var(--violet-light); }
.lang-sep { color: rgba(255,255,255,0.3); }

.menu-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; background: none; border: 1px solid rgba(255,255,255,0.15); border-radius: 10px; }
.menu-bar { display: block; width: 20px; height: 2px; margin-inline: auto; background: var(--white); transition: transform 0.25s var(--ease), opacity 0.2s var(--ease); }
.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------ Hero ------------------------------ */
.hero { position: relative; background: var(--bg-dark); color: var(--text-on-dark); padding-block: clamp(80px, 12vw, 150px); overflow: hidden; }
.hero-glow {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 55% at 18% 8%, rgba(98,21,238,0.45), transparent 60%),
    radial-gradient(46% 46% at 92% 26%, rgba(139,79,242,0.22), transparent 60%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr); gap: 48px; align-items: center; }
.hero-content { max-width: 640px; }
.hero-visual { justify-self: end; width: 100%; max-width: 540px; }
.hero-visual img { width: 100%; height: auto; }
.badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  font-size: 0.85rem; font-weight: 500; color: var(--text-on-dark-muted);
  margin-bottom: 24px;
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--violet-light); box-shadow: 0 0 0 4px rgba(139,79,242,0.2); }
.hero-title { font-size: clamp(2.3rem, 6vw, 4rem); letter-spacing: -0.03em; }
.hero-title .accent { color: var(--violet-light); }
.hero-subtitle { margin-top: 22px; font-size: clamp(1.05rem, 2vw, 1.28rem); color: var(--text-on-dark-muted); max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* Trust bar */
.trust-bar { grid-column: 1 / -1; margin-top: 52px; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.08); }
.trust-label { display: block; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-on-dark-muted); margin-bottom: 16px; }
.trust-chips { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.trust-chips li { display: inline-flex; align-items: center; gap: 9px; font-size: 0.94rem; font-weight: 500; color: var(--text-on-dark); }
.trust-chips svg { width: 18px; height: 18px; flex: 0 0 auto; fill: none; stroke: var(--violet-light); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }

/* ------------------------- Bento grid ----------------------------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.bento-card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.bento-card:hover { transform: translateY(-4px); border-color: rgba(139,79,242,0.55); background: var(--glass-strong); }
.bento-card h3 { font-size: 1.18rem; margin-bottom: 10px; color: var(--white); }
.bento-card p { color: var(--text-on-dark-muted); font-size: 0.97rem; }

/* Feature card spans tall on the left */
.bento-feature {
  grid-column: 1; grid-row: 1 / span 2;
  background: linear-gradient(155deg, rgba(98,21,238,0.22), rgba(255,255,255,0.03));
  border-color: rgba(139,79,242,0.4);
  display: flex; flex-direction: column;
}
.bento-feature h3 { font-size: 1.5rem; }
.bento-feature p { font-size: 1.02rem; }
.bento-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 22px; }
.bento-tags li { font-size: 0.82rem; font-weight: 500; color: var(--violet-light); padding: 6px 12px; border: 1px solid rgba(139,79,242,0.35); border-radius: 999px; background: rgba(139,79,242,0.08); }

.card-icon { display: inline-flex; align-items: center; justify-content: center; width: 50px; height: 50px; border-radius: 14px; background: rgba(139,79,242,0.14); color: var(--violet-light); margin-bottom: 18px; }
.card-icon svg { width: 25px; height: 25px; }

/* Metric tile inside bento */
.bento-metric { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 4px; }
.bento-wide { grid-column: span 2; }

/* Shared metric typography */
.metric-value {
  font-family: var(--font-head); font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 2.9rem);
  line-height: 1; color: var(--white);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.metric-of { font-size: 0.5em; color: var(--violet-light); }
.metric-label { font-size: 0.9rem; color: var(--text-on-dark-muted); margin-top: 8px; }

/* ----------------------------- About ------------------------------ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.about-intro h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: 16px; }
.about-intro .btn { margin-top: 28px; }
.about-intro p + p { margin-top: 16px; color: var(--text-muted); }

.strengths { display: grid; gap: 22px; }
.strength { display: flex; gap: 16px; align-items: flex-start; }
.strength-icon { flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: var(--white); border: 1px solid var(--neutral-200); color: var(--violet); box-shadow: var(--shadow-sm); }
.strength-icon svg { width: 22px; height: 22px; }
.strength h3 { font-size: 1.08rem; margin-bottom: 4px; }
.strength p { color: var(--text-muted); font-size: 0.96rem; }

/* Impact metrics (light surface) */
.impact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin-top: 64px; padding-top: 48px;
  border-top: 1px solid var(--neutral-200);
}
.impact-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.impact-card .metric-value { color: var(--violet); }
.impact-card .metric-label { color: var(--text-muted); }

/* --------------------------- Technologies ------------------------- */
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; }
.tech-group h3 { font-size: 1.05rem; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--neutral-200); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips li { padding: 8px 14px; border-radius: 999px; background: rgba(98,21,238,0.07); border: 1px solid rgba(98,21,238,0.14); color: var(--violet-dark); font-size: 0.9rem; font-weight: 500; }

/* ----------------------------- Sectors ---------------------------- */
.sectors-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; }
.sector-card { background: var(--white); border: 1px solid var(--neutral-200); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease); }
.sector-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.sector-num { font-family: var(--font-head); font-weight: 700; font-size: 0.95rem; color: var(--violet-light); }
.sector-card h3 { font-size: 1.15rem; margin: 10px 0 8px; }
.sector-card p { color: var(--text-muted); font-size: 0.96rem; }

/* ------------------------ AI specialization ----------------------- */
.section-ai { position: relative; background: var(--bg-dark); color: var(--text-on-dark); overflow: hidden; }
.ai-glow {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(55% 60% at 82% 0%, rgba(139,79,242,0.30), transparent 65%),
    radial-gradient(50% 55% at 8% 100%, rgba(98,21,238,0.22), transparent 60%);
}
.section-ai .container { position: relative; }
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ai-card {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); padding: 28px;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.ai-card:hover { transform: translateY(-4px); border-color: rgba(139,79,242,0.55); background: var(--glass-strong); }
.ai-card h3 { font-size: 1.18rem; margin-bottom: 10px; color: var(--white); }
.ai-card p { color: var(--text-on-dark-muted); font-size: 0.97rem; }

/* ----------------------------- Contact ---------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-intro h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: 16px; }
.contact-details { display: grid; gap: 16px; margin-top: 32px; }
.contact-details li { display: flex; flex-direction: column; gap: 2px; }
.contact-details a { color: var(--violet-light); }
.contact-details a:hover { color: var(--white); }
.contact-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-on-dark-muted); }

.social { display: flex; gap: 12px; margin-top: 28px; }
.social a { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 12px; border: 1px solid rgba(255,255,255,0.16); color: var(--text-on-dark); transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease); }
.social a:hover { background: var(--violet); border-color: var(--violet); color: var(--white); }
.social svg { width: 20px; height: 20px; }

/* Form */
.contact-form { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 30px; display: grid; gap: 18px; }
.field { display: grid; gap: 7px; }
.field label { font-size: 0.9rem; font-weight: 500; color: var(--text-on-dark); }
.field input, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.16); background: rgba(14,14,18,0.5);
  color: var(--white); font: inherit;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: #7a7a88; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--violet-light); box-shadow: 0 0 0 3px rgba(139,79,242,0.25); }
.field textarea { resize: vertical; min-height: 110px; }
.field-error { display: none; font-size: 0.85rem; color: #ff8a8a; }
.field.has-error input, .field.has-error textarea { border-color: #ff8a8a; }
.field.has-error .field-error { display: block; }
.form-status { margin: 0; font-size: 0.95rem; min-height: 1.2em; }
.form-status.is-success { color: #5fe0a8; }
.form-status.is-error { color: #ff8a8a; }

/* ----------------------------- Footer ----------------------------- */
.site-footer { background: var(--bg-darker); color: var(--text-on-dark-muted); padding-top: 64px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .brand { margin-bottom: 14px; }
.footer-tagline { max-width: 280px; font-size: 0.96rem; }
.footer-heading { font-family: var(--font-head); font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--white); margin-bottom: 16px; }
.footer-nav ul, .footer-contact ul { display: grid; gap: 10px; }
.footer-nav a, .footer-contact a { color: var(--text-on-dark-muted); }
.footer-nav a:hover, .footer-contact a:hover { color: var(--violet-light); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; padding-block: 24px; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.88rem; }
.footer-legal { display: flex; gap: 10px; align-items: center; }
.footer-legal a { color: var(--text-on-dark-muted); }
.footer-legal a:hover { color: var(--violet-light); }

/* --------------------- Scroll offset for anchors ------------------ */
:where(section[id], [id="top"]) { scroll-margin-top: calc(var(--header-h) + 12px); }

/* ----------------------- Reveal on scroll ------------------------- */
/* Gated behind .js so content stays visible if JavaScript is disabled. */
html.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.5s var(--ease), transform 0.5s var(--ease); }
html.js .reveal.is-visible { opacity: 1; transform: none; }

/* ----------------------------- Responsive ------------------------- */
@media (max-width: 960px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-feature { grid-column: 1 / -1; grid-row: auto; }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { display: none; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .ai-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .header-cta { display: none; }
  .menu-toggle { display: flex; }
  .header-actions { margin-left: auto; }
  .main-nav { position: fixed; inset: var(--header-h) 0 auto 0; margin: 0; background: rgba(24,10,52,0.98); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(139,79,242,0.20); max-height: 0; overflow: hidden; transition: max-height 0.3s var(--ease); }
  .main-nav.is-open { max-height: 70vh; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 20px; }
  .nav-list li { border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-list a { display: block; padding: 16px 0; font-size: 1.05rem; }
  .nav-list a::after { display: none; }
}
@media (max-width: 560px) {
  .footer-inner { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}
@media (max-width: 420px) {
  .impact-grid { grid-template-columns: 1fr; }
}

/* --------------------------- 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; }
  .reveal { opacity: 1; transform: none; }
  .btn:hover, .bento-card:hover, .sector-card:hover { transform: none; }
}