/* ============================================
   XETTALI — FOR ENTERPRISE SAAS PRODUCT SHOWCASE
   Premium dark UI for Xettali and KnowledgOS
   ============================================ */

/* === RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
  color: #eef2ff;
  background: #04070f;
  background-image:
    radial-gradient(circle at 12% 12%, rgba(96, 216, 255, 0.14), transparent 16%),
    radial-gradient(circle at 88% 10%, rgba(131, 93, 255, 0.1), transparent 18%),
    linear-gradient(180deg, #05070f 0%, #060914 45%, #081023 100%);
  font-size: 16px;
}

::selection {
  background: rgba(93, 169, 255, 0.35);
  color: #eef2ff;
}

h1,
h2,
h3,
p,
button,
a {
  margin: 0;
}

h1 {
  font-size: 2.3rem;
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #f8fbff;
}

h2 {
  font-size: 1.3rem;
  line-height: 1.15;
  font-weight: 800;
  color: #f4faff;
}

h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

p {
  color: #cdd8f7;
  line-height: 1.8;
}

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

a:hover {
  text-decoration: underline;
}

button,
.cta-button {
  font: inherit;
}

/* === HERO SECTION === */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 94vh;
  padding: 2.5rem 1.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 8% 8%, rgba(98, 187, 255, 0.18), transparent 18%),
    radial-gradient(circle at 92% 14%, rgba(158, 92, 255, 0.14), transparent 18%),
    linear-gradient(135deg, rgba(10, 14, 24, 0.86), rgba(7, 11, 18, 0.94));
  pointer-events: none;
  z-index: 0;
}

.hero-top {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(1120px, 100%);
  margin: 0 auto 2rem;
}

.hero-top .logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #f8fbff;
}

.hero-top-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.2rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #d6e7ff;
  font-size: 0.95rem;
  transition: transform 0.22s ease, background 0.22s ease, border-color 0.22s ease;
}

.hero-top-link:hover {
  transform: translateY(-1px);
  background: rgba(94, 166, 255, 0.16);
  border-color: rgba(94, 166, 255, 0.3);
}

.hero-grid {
  position: relative;
  z-index: 1;
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
}

.hero-copy {
  max-width: 640px;
  animation: fadeInUp 0.9s ease both;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 1rem;
  color: #8cd4ff;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
}

.hero h1 {
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  margin-bottom: 1.3rem;
  color: #f8fbff;
}

.hero p {
  margin-bottom: 1.75rem;
  font-size: 1.05rem;
  color: #c8d8f9;
  max-width: 680px;
}

.hero-note {
  color: #9fc9ff;
  font-size: 0.96rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 12rem;
  padding: 1rem 2rem;
  border-radius: 999px;
  border: none;
  color: #05070f;
  font-weight: 700;
  background: linear-gradient(135deg, #64b8ff, #8a5cff);
  box-shadow: 0 26px 75px rgba(61, 108, 236, 0.2);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  text-decoration: none;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 30px 85px rgba(61, 108, 236, 0.28);
}

.cta-button:focus-visible {
  outline: 2px solid rgba(130, 211, 255, 0.92);
  outline-offset: 4px;
}

.hero-panel {
  display: grid;
  gap: 1.2rem;
  padding: 2rem;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 34px 110px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(18px);
  animation: floatIn 1s ease both;
}

.panel-eyebrow,
.card-label {
  display: inline-flex;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  background: rgba(90, 170, 255, 0.14);
  color: #c5e5ff;
}

.panel-title {
  font-size: 1.95rem;
  font-weight: 800;
  color: #f8fbff;
}

.panel-tagline {
  color: #b9ccf5;
  font-size: 0.98rem;
  line-height: 1.65;
}

.panel-url {
  color: #acc4ff;
  font-size: 0.95rem;
}

.panel-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  color: #adc1df;
  font-size: 0.9rem;
}

.panel-meta span {
  display: inline-flex;
  padding: 0.6rem 0.95rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.panel-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  text-align: center;
}

.stat span {
  display: block;
  font-size: 1.45rem;
  font-weight: 800;
  color: #eef2ff;
}

.stat small {
  display: block;
  margin-top: 0.35rem;
  color: #9db3d8;
  font-size: 0.88rem;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* === PRODUCT SHOWCASE === */
.product-showcase {
  padding: 3rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.section-intro {
  max-width: 720px;
  margin: 0 auto 2rem;
  text-align: center;
}

.section-intro h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: #f8fbff;
  line-height: 1.05;
  margin-bottom: 1rem;
}

.section-intro p {
  color: #cad6f4;
  max-width: 720px;
  margin: 0 auto;
}

.product-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.product-card {
  padding: 1.8rem;
  border-radius: 22px;
  background: rgba(8, 12, 22, 0.92);
  border: 1px solid rgba(96, 216, 255, 0.1);
  box-shadow: 0 20px 65px rgba(0, 0, 0, 0.2);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(92, 173, 255, 0.25);
  background: rgba(12, 17, 32, 0.96);
}

.product-card h3 {
  margin: 0.85rem 0;
  color: #f7fbff;
}

.product-card p {
  color: #b7c8f1;
}

/* === WHAT WE DO SECTION === */
.what-we-do {
  padding: 3rem 1.5rem;
  background: rgba(255, 255, 255, 0.04);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
}

.what-we-do .block {
  margin-bottom: 1.75rem;
  padding: 1.75rem;
  background: rgba(10, 15, 28, 0.75);
  border: 1px solid rgba(96, 216, 255, 0.12);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
}

.what-we-do .block:last-child {
  margin-bottom: 0;
}

.what-we-do h2 {
  font-size: 1.2rem;
  color: #8ee4ff;
  margin-bottom: 0.85rem;
}

.what-we-do p {
  color: #c1d5f8;
  line-height: 1.85;
}

/* === DIVISIONS SECTION === */
.divisions {
  padding: 2.5rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  text-align: center;
  font-size: 0.95rem;
  color: #a3c8ff;
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* === TRUST SIGNALS SECTION === */
.trust-signals {
  padding: 3rem 1.5rem;
  background: transparent;
}

.trust-signals .block {
  margin-bottom: 1.75rem;
  padding: 1.75rem;
  background: rgba(12, 18, 34, 0.9);
  border: 1px solid rgba(96, 216, 255, 0.12);
  border-radius: 18px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.2);
}

.trust-signals .block:last-child {
  margin-bottom: 0;
}

.trust-signals h3 {
  color: #c3e8ff;
  font-weight: 700;
  margin-bottom: 0.65rem;
  font-size: 1rem;
}

.trust-signals p {
  color: #c1d5f8;
}

/* === CONTACT SECTION === */
.contact {
  padding: 3rem 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.contact h2 {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  color: #f8fbff;
}

.contact-item {
  margin-bottom: 1.5rem;
  font-size: 1rem;
  color: #d0d8f2;
}

.contact-label {
  font-weight: 700;
  color: #8ee4ff;
  display: block;
  margin-bottom: 0.35rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.contact-value {
  color: #d0d8f2;
  word-break: break-word;
}

.contact-value a {
  color: #7fd9ff;
}

.contact-description {
  margin-top: 1.5rem;
  padding: 1.75rem;
  background: rgba(4, 9, 19, 0.85);
  border: 1px solid rgba(96, 216, 255, 0.12);
  border-radius: 16px;
  font-size: 0.97rem;
  line-height: 1.8;
  color: #b9c6e5;
}

/* === FOOTER === */
.legal-mentions {
  padding: 2rem 1.5rem;
  background: #080b14;
  color: #8fa4cb;
  font-size: 0.84rem;
  line-height: 1.8;
  border-top: 1px solid rgba(96, 216, 255, 0.1);
  text-align: center;
}

.legal-mentions a {
  color: #7fd9ff;
}

.legal-mentions a:hover {
  color: #9fdfff;
}

.footer-section {
  margin-bottom: 1rem;
}

/* === TABLET & DESKTOP === */
@media (min-width: 768px) {
  /* Hero adjustments */
  .hero {
    min-height: 100vh;
    padding: 3rem;
    justify-content: center;
    align-items: center;
  }

  .logo {
    font-size: 1.8rem;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 3rem;
    align-items: center;
  }

  .hero h1 {
    font-size: 3.4rem;
    max-width: 100%;
    margin-bottom: 1.5rem;
  }

  .hero p {
    font-size: 1.05rem;
    max-width: 90%;
    margin-bottom: 2.5rem;
  }

  /* What we do — horizontal layout */
  .what-we-do {
    padding: 4rem 3rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }

  .what-we-do .block {
    margin-bottom: 0;
    padding: 1.75rem;
  }

  .what-we-do h2 {
    font-size: 1.3rem;
  }

  /* Divisions — refined */
  .divisions {
    padding: 2rem 3rem;
    font-size: 1rem;
  }

  /* Trust signals — horizontal */
  .trust-signals {
    padding: 4rem 3rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }

  .trust-signals .block {
    padding: 2rem;
  }

  /* Contact */
  .contact {
    padding: 4rem 3rem;
  }

  .contact h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }

  .contact-item {
    font-size: 1.05rem;
  }

  /* Footer */
  .legal-mentions {
    padding: 3rem;
    font-size: 0.9rem;
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 3.9rem;
    max-width: 80%;
  }

  .hero p {
    font-size: 1.2rem;
    max-width: 65%;
  }

  .contact-description {
    max-width: 65%;
  }
}

/* === ACCESSIBILITY & PRINT === */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .cta-button {
    border: 1px solid #1a1a1a;
  }

  body {
    background: #fff;
    color: #000;
  }
}