/* ============================================================
   DISTRIBUTED CLOUD LLC — Main Stylesheet
   ============================================================ */

/* === CSS CUSTOM PROPERTIES === */
:root {
  --bg-base:        #06091a;
  --bg-surface:     #090e20;
  --bg-card:        #0d1226;
  --bg-card-hover:  #111829;
  --bg-input:       #0a0f1e;

  --accent:         #2563eb;
  --accent-hover:   #1d4ed8;
  --accent-glow:    rgba(37, 99, 235, 0.25);
  --accent-cyan:    #06b6d4;
  --accent-green:   #10b981;

  --text-primary:   #eef2ff;
  --text-secondary: #8b97b8;
  --text-muted:     #4a5672;

  --border:         rgba(255, 255, 255, 0.07);
  --border-strong:  rgba(255, 255, 255, 0.12);
  --border-accent:  rgba(37, 99, 235, 0.35);

  --radius-sm:  6px;
  --radius:    12px;
  --radius-lg: 20px;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.2);

  --nav-height: 72px;
  --max-width: 1160px;
  --section-gap: 120px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.22s var(--ease);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; }

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

ul {
  list-style: none;
}

address {
  font-style: normal;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* === LAYOUT UTILITIES === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-gap) 0;
}

.gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: 8px;
}

.btn-full {
  width: 100%;
}

/* === SECTION HEADER === */
.section-label {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 18px;
  color: var(--text-primary);
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .section-desc {
  margin: 0 auto;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(6, 9, 26, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-cyan) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.03em;
  color: #fff;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-llc {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  margin-left: 8px;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 6px;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.25s ease;
  transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 60px) 0 80px;
  overflow: hidden;
}

/* Background */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: aurora 10s ease-in-out infinite;
}

.aurora-1 {
  width: 700px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(37, 99, 235, 0.18) 0%, transparent 65%);
  top: -150px;
  left: -100px;
  animation-duration: 12s;
}

.aurora-2 {
  width: 550px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(6, 182, 212, 0.12) 0%, transparent 65%);
  top: 10%;
  right: -80px;
  animation-duration: 9s;
  animation-direction: reverse;
}

@keyframes aurora {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(20px, -25px) scale(1.05); }
  66%       { transform: translate(-15px, 15px) scale(0.97); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 100%);
}

/* Hero Content */
.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-accent);
  background: rgba(37, 99, 235, 0.08);
  color: #93c5fd;
}

.cert-badge-alt {
  border-color: rgba(6, 182, 212, 0.35);
  background: rgba(6, 182, 212, 0.08);
  color: #67e8f9;
}

.hero-title {
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.08;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-desc {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 640px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ============================================================
   TRUST BAR
   ============================================================ */
.trust-bar {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

.trust-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 0;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 28px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.trust-item svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.trust-sep {
  width: 1px;
  height: 22px;
  background: var(--border);
  flex-shrink: 0;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition);
}

.service-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 8px 40px rgba(37, 99, 235, 0.12);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.service-icon {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: box-shadow var(--transition);
}

.service-icon-blue  { background: rgba(37, 99, 235, 0.12); color: #60a5fa; }
.service-icon-cyan  { background: rgba(6, 182, 212, 0.12); color: #22d3ee; }
.service-icon-green { background: rgba(16, 185, 129, 0.12); color: #34d399; }

.service-card:hover .service-icon-blue  { box-shadow: 0 0 24px rgba(37, 99, 235, 0.3); }
.service-card:hover .service-icon-cyan  { box-shadow: 0 0 24px rgba(6, 182, 212, 0.3); }
.service-card:hover .service-icon-green { box-shadow: 0 0 24px rgba(16, 185, 129, 0.3); }

.service-title {
  font-size: 20px;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.service-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 22px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  font-size: 13.5px;
  color: var(--text-muted);
  padding-left: 18px;
  position: relative;
  line-height: 1.5;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 80px;
  align-items: start;
}

.about-content .section-title {
  max-width: 520px;
}

.about-text {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

.differentiators {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.differentiators li {
  display: flex;
  gap: 14px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.diff-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.differentiators strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.stat-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 42px;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-value.stat-text {
  font-size: 28px;
}

.stat-value.stat-text-sm {
  font-size: 20px;
  letter-spacing: -0.02em;
}

.stat-plus {
  font-size: 28px;
  font-weight: 700;
}

.stat-label {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  line-height: 1.4;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-section {
  padding: var(--section-gap) 0 calc(var(--section-gap) * 1.1);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info .section-title {
  max-width: 440px;
}

.contact-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-detail svg {
  flex-shrink: 0;
  color: var(--accent-cyan);
  margin-top: 1px;
}

.contact-detail a {
  color: var(--accent-cyan);
  transition: color var(--transition);
}

.contact-detail a:hover {
  color: #a5f3fc;
}

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-group:last-of-type {
  margin-bottom: 24px;
}

label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.required {
  color: #f87171;
}

.optional {
  font-weight: 400;
  color: var(--text-muted);
}

input, select, textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b97b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea {
  resize: vertical;
  min-height: 130px;
}

/* Form success state */
.form-success {
  display: none;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  margin-top: 16px;
  animation: fadeInUp 0.4s ease;
}

.form-success.visible {
  display: flex;
}

.form-success svg {
  color: var(--accent-green);
  flex-shrink: 0;
  margin-top: 2px;
}

.form-success strong {
  display: block;
  font-size: 15px;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.form-success p {
  font-size: 13.5px;
  color: var(--text-secondary);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.footer-logo {
  display: flex;
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-cert {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  gap: 56px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-col address {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-tagline-sm {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

[data-animate][data-delay="100"] { transition-delay: 0.1s; }
[data-animate][data-delay="200"] { transition-delay: 0.2s; }

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   RESPONSIVE — TABLET (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --section-gap: 80px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-nav {
    gap: 40px;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 640px)
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --section-gap: 64px;
    --nav-height: 64px;
  }

  /* Nav */
  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    background: rgba(6, 9, 26, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }

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

  .nav-link {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    justify-content: center;
    padding: 13px;
    font-size: 15px;
  }

  .nav-toggle {
    display: flex;
  }

  /* Hero */
  .hero {
    padding: calc(var(--nav-height) + 48px) 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    justify-content: center;
  }

  /* Trust bar */
  .trust-grid {
    gap: 12px 0;
  }

  .trust-sep {
    display: none;
  }

  .trust-item {
    padding: 4px 16px;
  }

  /* Services */
  .services-grid {
    max-width: 100%;
  }

  .service-card {
    padding: 28px 24px;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .contact-form {
    padding: 28px 20px;
  }

  /* Footer */
  .footer-nav {
    flex-wrap: wrap;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}