/* Helix Cloud Solutions — styles. No external dependencies. */

:root {
  --bg: #05060a;
  --bg-2: #0a0c13;
  --text: #eef0f6;
  --muted: #9aa1b2;
  --faint: #5c6373;
  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --line: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.035);
  --radius: 14px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, SFMono, Menlo, Consolas, "Liberation Mono", monospace;
  --nav-h: 64px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(139, 92, 246, 0.45); }

h1, h2, h3 {
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  text-wrap: balance;
}

h2 { font-size: clamp(2rem, 4.5vw, 3rem); }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p { margin: 0 0 1rem; }
a { color: inherit; }

.mono { font-family: var(--font-mono); }

.container {
  width: min(72rem, 100% - 3rem);
  margin-inline: auto;
}
.container.narrow { width: min(52rem, 100% - 3rem); }

.label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.25rem;
}

.grad {
  background: linear-gradient(100deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grad-text {
  background: linear-gradient(100deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--cyan);
  color: #031014;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  z-index: 100;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 650;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(100deg, var(--cyan), var(--violet));
  color: #060a12;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(34, 211, 238, 0.35);
}
.btn-ghost {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-ghost:hover {
  border-color: rgba(34, 211, 238, 0.5);
  transform: translateY(-2px);
}
.btn-sm { padding: 0.55rem 1.15rem; font-size: 0.9rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* Nav */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 50;
  transition: background 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 6, 10, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-name {
  font-weight: 800;
  letter-spacing: 0.28em;
  font-size: 0.95rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-links > a:not(.btn) {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 550;
  transition: color 0.15s;
}
.nav-links > a:not(.btn):hover,
.nav-links > a:not(.btn).active { color: var(--text); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 3rem) 0 5rem;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 30%, transparent 75%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 12rem;
  background: linear-gradient(transparent, var(--bg));
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-title {
  font-size: clamp(2.75rem, 7.5vw, 5.25rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--muted);
  max-width: 42rem;
  margin-bottom: 2.25rem;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.hero-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  font-size: 0.82rem;
  color: var(--faint);
}
.hero-status span { display: inline-flex; align-items: center; gap: 0.5rem; }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 1.75rem;
  transform: translateX(-50%);
  z-index: 1;
  opacity: 0.6;
}
.scroll-hint span {
  display: block;
  width: 24px; height: 40px;
  border: 2px solid var(--faint);
  border-radius: 14px;
  position: relative;
}
.scroll-hint span::after {
  content: "";
  position: absolute;
  left: 50%; top: 8px;
  width: 4px; height: 8px;
  margin-left: -2px;
  border-radius: 4px;
  background: var(--cyan);
  animation: wheel 1.8s ease-in-out infinite;
}
@keyframes wheel {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* Sections */
.section { padding: 6.5rem 0; scroll-margin-top: 3rem; position: relative; }
.section-sub {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 40rem;
  margin-bottom: 3rem;
}

/* Cards */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.card {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: 0 16px 48px rgba(34, 211, 238, 0.08);
}
.card p:last-child { margin-bottom: 0; color: var(--muted); }
.card-index {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 1rem;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 2rem 1.75rem;
  border-top: 1px solid var(--line);
}
.step::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 3.5rem; height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}
.step-num {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--violet);
  margin: 0 0 1rem;
}
.step p:last-child { margin-bottom: 0; color: var(--muted); }

/* Status panel */
.status-panel {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  margin-bottom: 2rem;
  overflow: hidden;
}
.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.status-row:last-child { border-bottom: 0; }
.status-row > span:first-child { color: var(--faint); }
.status-row > span:last-child { text-align: right; }

/* FAQ */
.faq-list { display: grid; gap: 0.75rem; }
.faq {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq:hover { border-color: rgba(139, 92, 246, 0.35); }
.faq summary {
  padding: 1.25rem 1.5rem;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--cyan);
  flex: none;
  transition: transform 0.2s;
}
.faq[open] summary::after { transform: rotate(45deg); }
.faq p {
  padding: 0 1.5rem 1.5rem;
  margin: 0;
  color: var(--muted);
}

/* Contact band */
.contact-band {
  text-align: center;
  background:
    radial-gradient(ellipse 60% 80% at 50% 100%, rgba(139, 92, 246, 0.14), transparent 70%),
    radial-gradient(ellipse 50% 70% at 50% 100%, rgba(34, 211, 238, 0.1), transparent 70%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.contact-band .section-sub { margin-inline: auto; }

/* Footer */
.footer {
  padding: 3rem 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}
.footer-meta { font-size: 0.8rem; color: var(--faint); margin: 0; }
.footer-contact { margin: 0; }
.footer-contact a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}
.footer-contact a:hover { color: var(--cyan); }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 900px) {
  .cards-3, .steps { grid-template-columns: 1fr; }
  .step { padding: 1.5rem 0 1.5rem 1.25rem; border-top: 0; border-left: 1px solid var(--line); }
  .step::before {
    top: 0; left: -1px;
    width: 1px; height: 3.5rem;
    background: linear-gradient(180deg, var(--cyan), var(--violet));
  }
}
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.5rem 1.5rem;
    background: rgba(5, 6, 10, 0.96);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .nav-links.open { transform: none; }
  .nav-links > a { padding: 0.8rem 0; border-bottom: 1px solid var(--line); }
  .nav-links > a.btn { margin-top: 1rem; border-bottom: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .section { padding: 4.5rem 0; }
}

/* 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; }
}