/* ============================================================
   Gunther Cloud Solutions — Trust & Authority design system
   Palette: navy primary, blue CTA · Poppins / Open Sans
   ============================================================ */

:root {
  --color-primary: #0F172A;
  --color-on-primary: #FFFFFF;
  --color-secondary: #334155;
  --color-accent: #0369A1;
  --color-accent-hover: #075985;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-foreground: #020617;
  --color-muted: #E8ECF1;
  --color-muted-text: #475569;
  --color-border: #E2E8F0;
  --color-ring: #0F172A;

  --font-heading: "Poppins", system-ui, sans-serif;
  --font-body: "Open Sans", system-ui, sans-serif;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.14);
  --transition: 200ms ease-out;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #E2E8F0;
    --color-on-primary: #0F172A;
    --color-secondary: #CBD5E1;
    --color-accent: #38BDF8;
    --color-accent-hover: #7DD3FC;
    --color-background: #0B1120;
    --color-surface: #111A2E;
    --color-foreground: #F1F5F9;
    --color-muted: #1E293B;
    --color-muted-text: #94A3B8;
    --color-border: #24304A;
    --color-ring: #38BDF8;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
  }
}

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

html { scroll-behavior: smooth; }

section[id] { scroll-margin-top: 84px; }

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 var(--space-4);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 600; letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: var(--space-1); }

p { margin: 0 0 var(--space-4); }

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }

img, svg { max-width: 100%; }

:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-3) var(--space-4);
  z-index: 1000;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

.eyebrow {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.eyebrow.light { color: #7DD3FC; }

.accent { color: var(--color-accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
  min-height: 44px;
}
.btn svg { width: 20px; height: 20px; flex-shrink: 0; }

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-light {
  background: #fff;
  color: #0F172A;
  box-shadow: var(--shadow-md);
}
.btn-light:hover {
  background: #E0F2FE;
  color: #0F172A;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 1.0625rem;
}
.brand:hover { color: var(--color-primary); }
.brand-mark { width: 30px; height: 30px; color: var(--color-accent); flex-shrink: 0; }
.brand-text strong { font-weight: 700; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-primary);
  padding: var(--space-2);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
}
.nav-toggle svg { width: 26px; height: 26px; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-menu a {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-secondary);
  padding: var(--space-2) 0;
  display: inline-block;
}
.nav-menu a:hover { color: var(--color-accent); }

.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 0.625rem 1.25rem !important;
  border-radius: var(--radius);
  transition: background-color var(--transition);
}
.nav-cta:hover { background: var(--color-accent-hover); }

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  background:
    radial-gradient(60rem 30rem at 85% -10%, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 60%),
    var(--color-background);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero .lead {
  font-size: 1.1875rem;
  color: var(--color-muted-text);
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block: var(--space-8);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
  color: var(--color-muted-text);
}
.hero-trust li { display: inline-flex; align-items: center; gap: var(--space-2); }
.hero-trust svg { width: 18px; height: 18px; color: var(--color-accent); flex-shrink: 0; }

/* terminal card */
.hero-card {
  background: #0F172A;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid #1E293B;
}
.hero-card-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.75rem 1rem;
  background: #1E293B;
}
.hero-card-header .dot { width: 10px; height: 10px; border-radius: 50%; background: #475569; }
.hero-card-title {
  margin-left: var(--space-2);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.75rem;
  color: #94A3B8;
}
.hero-card-body {
  margin: 0;
  padding: 1.25rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: #E2E8F0;
  overflow-x: auto;
}
.c-ok { color: #4ADE80; }
.c-dim { color: #64748B; }
.c-accent { color: #38BDF8; }

/* ---------- Stats band ---------- */
.stats {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding-block: var(--space-12);
}
@media (prefers-color-scheme: dark) {
  .stats { background: #111A2E; color: #F1F5F9; border-block: 1px solid var(--color-border); }
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}
.stat-value {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: #7DD3FC;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  display: block;
  margin-top: var(--space-1);
  font-size: 0.875rem;
  opacity: 0.85;
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(3.5rem, 7vw, 5.5rem); }
.section-alt { background: var(--color-muted); }
@media (prefers-color-scheme: dark) {
  .section-alt { background: #0E1626; }
}

.section-head {
  text-align: center;
  max-width: 44rem;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}
.section-head.left { text-align: left; margin-inline: 0; margin-bottom: var(--space-6); }
.section-sub { color: var(--color-muted-text); font-size: 1.0625rem; }

/* ---------- Service cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-border));
}
.card p { margin: 0; color: var(--color-muted-text); font-size: 0.9375rem; }

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}
.card-icon svg { width: 26px; height: 26px; }

/* ---------- Process ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}
.process-step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}
.step-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}
.process-step h3 { margin-bottom: var(--space-2); }
.process-step p { margin: 0; color: var(--color-muted-text); font-size: 0.9375rem; }

/* ---------- Why us ---------- */
.why-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.why-copy > p { color: var(--color-muted-text); font-size: 1.0625rem; max-width: 36rem; }

.check-list {
  list-style: none;
  margin: var(--space-8) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}
.check-list li { display: flex; gap: var(--space-3); align-items: flex-start; }
.check-list svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 3px;
}
.check-list strong { color: var(--color-primary); }
.check-list div { color: var(--color-muted-text); }

.why-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 96px;
}
.why-panel h3 {
  font-size: 1.0625rem;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.option { padding-block: var(--space-4); }
.option + .option { border-top: 1px solid var(--color-border); }
.option p { margin: 0; font-size: 0.9rem; color: var(--color-muted-text); }

/* ---------- About ---------- */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-body p { color: var(--color-muted-text); font-size: 1.0625rem; }

/* ---------- Contact ---------- */
.contact {
  background:
    radial-gradient(50rem 25rem at 15% 120%, rgba(56, 189, 248, 0.18), transparent 60%),
    #0F172A;
  color: #F1F5F9;
}
.contact h2 { color: #fff; }
.contact p { color: #CBD5E1; max-width: 36rem; }
.contact-inner { display: flex; justify-content: center; text-align: center; }
.contact-copy { max-width: 40rem; }
.contact-copy p { margin-inline: auto; }
.contact .btn { margin-top: var(--space-4); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-primary);
}
.footer-brand .brand-mark { width: 24px; height: 24px; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links a { color: var(--color-muted-text); font-size: 0.9rem; }
.footer-links a:hover { color: var(--color-accent); }
.footer-note { margin: 0; font-size: 0.85rem; color: var(--color-muted-text); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 400ms ease-out, transform 400ms ease-out;
}
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: var(--space-8) var(--space-4); }
}

@media (max-width: 820px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: 2; }
  .why-inner, .about-inner { grid-template-columns: 1fr; }
  .why-panel { position: static; }
}

@media (max-width: 640px) {
  .card-grid, .process { grid-template-columns: 1fr; }

  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: var(--space-2) 0;
  }
  .nav-menu.open { display: flex; }
  .nav-menu li { width: 100%; }
  .nav-menu a {
    display: block;
    padding: var(--space-3) clamp(1.25rem, 4vw, 2.5rem);
    min-height: 44px;
  }
  .nav-cta {
    margin: var(--space-2) clamp(1.25rem, 4vw, 2.5rem);
    text-align: center;
    border-radius: var(--radius) !important;
  }
}