/* Art direction: established B2B infrastructure agency → precise, dark, enterprise-grade
   Palette: deep navy neutrals with electric blue and tech yellow accents
   Typography: Inter — unified display and body for operational clarity
   Density: balanced — spacious hero, compact business sections */

:root,
[data-theme="light"] {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);

  --space-1:  0.25rem;  --space-2:  0.5rem;   --space-3:  0.75rem;
  --space-4:  1rem;     --space-5:  1.25rem;  --space-6:  1.5rem;
  --space-8:  2rem;     --space-10: 2.5rem;   --space-12: 3rem;
  --space-16: 4rem;     --space-20: 5rem;     --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm:   0.375rem;
  --radius-md:   0.75rem;
  --radius-lg:   1rem;
  --radius-xl:   1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --font-display: 'Inter', 'Segoe UI', sans-serif;
  --font-body:    'Inter', 'Segoe UI', sans-serif;
  --content-default: 1120px;

  --color-bg:              #f3f7fb;
  --color-surface:         #ffffff;
  --color-surface-2:       #eef3f8;
  --color-surface-offset:  #e7eef6;
  --color-border:          rgba(12, 26, 45, 0.12);
  --color-divider:         rgba(12, 26, 45, 0.08);
  --color-text:            #0c1727;
  --color-text-muted:      #4f6077;
  --color-text-faint:      #76869b;
  --color-text-inverse:    #f8fbff;
  --color-primary:         #0f6fff;
  --color-primary-hover:   #0b5bd3;
  --color-primary-highlight: rgba(15, 111, 255, 0.12);
  --color-yellow:          #d8a300;
  --color-yellow-hover:    #b88900;
  --color-yellow-highlight: rgba(216, 163, 0, 0.14);
  --shadow-sm: 0 10px 30px rgba(8, 18, 35, 0.06);
  --shadow-md: 0 18px 50px rgba(8, 18, 35, 0.10);
  --shadow-lg: 0 28px 80px rgba(8, 18, 35, 0.16);
}

[data-theme="dark"] {
  --color-bg:              #08111f;
  --color-surface:         #0d1728;
  --color-surface-2:       #111f34;
  --color-surface-offset:  #15243b;
  --color-border:          rgba(185, 205, 233, 0.14);
  --color-divider:         rgba(185, 205, 233, 0.10);
  --color-text:            #e9f1ff;
  --color-text-muted:      #a9b8cc;
  --color-text-faint:      #7f90a8;
  --color-text-inverse:    #06101d;
  --color-primary:         #4da3ff;
  --color-primary-hover:   #77b9ff;
  --color-primary-highlight: rgba(77, 163, 255, 0.16);
  --color-yellow:          #f4c84c;
  --color-yellow-hover:    #ffd96f;
  --color-yellow-highlight: rgba(244, 200, 76, 0.14);
  --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 18px 50px rgba(0, 0, 0, 0.30);
  --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.44);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #08111f;
    --color-surface:         #0d1728;
    --color-surface-2:       #111f34;
    --color-surface-offset:  #15243b;
    --color-border:          rgba(185, 205, 233, 0.14);
    --color-divider:         rgba(185, 205, 233, 0.10);
    --color-text:            #e9f1ff;
    --color-text-muted:      #a9b8cc;
    --color-text-faint:      #7f90a8;
    --color-text-inverse:    #06101d;
    --color-primary:         #4da3ff;
    --color-primary-hover:   #77b9ff;
    --color-primary-highlight: rgba(77, 163, 255, 0.16);
    --color-yellow:          #f4c84c;
    --color-yellow-hover:    #ffd96f;
    --color-yellow-highlight: rgba(244, 200, 76, 0.14);
    --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 18px 50px rgba(0, 0, 0, 0.30);
    --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.44);
  }
}

/* ── Reset ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background:
    radial-gradient(circle at top right,  rgba(77,163,255,0.07), transparent 28%),
    radial-gradient(circle at left bottom, rgba(244,200,76,0.04), transparent 22%),
    var(--color-bg);
}
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
p { max-width: 70ch; color: var(--color-text-muted); }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.08;
  letter-spacing: -0.03em;
}
button { cursor: pointer; background: none; border: none; }
a, button, input, textarea, select {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Utilities ───────────────────────────────────── */
.skip-link {
  position: absolute; left: var(--space-4); top: -4rem;
  background: var(--color-primary); color: #fff;
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); z-index: 1000;
}
.skip-link:focus { top: var(--space-4); }
.container {
  width: min(calc(100% - 2rem), var(--content-default));
  margin-inline: auto;
}
.section          { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); }
.section-small    { padding-block: var(--space-8); }
.section-alt      { background: linear-gradient(180deg, rgba(255,255,255,0.00), rgba(255,255,255,0.03)); }
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
  background: var(--color-primary-highlight); color: var(--color-primary);
  font-size: var(--text-xs); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  margin-bottom: var(--space-4);
}
.section-heading        { max-width: 46rem; margin-bottom: var(--space-10); }
.section-heading h2     { font-size: var(--text-xl); margin-bottom: var(--space-4); }
.section-heading.left   { margin-bottom: 0; }
.page-hero              { padding-block: clamp(var(--space-16), 10vw, var(--space-32)); }
.page-hero h1           { font-size: var(--text-2xl); margin-bottom: var(--space-5); }
.page-hero p            { font-size: var(--text-base); max-width: 50ch; }

/* ── Header ─────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--color-bg) 84%, transparent);
  border-bottom: 1px solid var(--color-divider);
}
.header-inner {
  min-height: 5.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
}
.brand { display: inline-flex; align-items: center; gap: var(--space-3); min-height: 44px; }
.brand-logo { width: 2.75rem; height: 2.75rem; flex: 0 0 auto; }
.brand-text-wrap { display: flex; flex-direction: column; }
.brand-text    { font-weight: 800; font-size: 1.05rem; color: var(--color-text); }
.brand-subtext { font-size: 0.75rem; color: var(--color-text-faint); letter-spacing: 0.04em; }
.main-nav { display: flex; align-items: center; gap: var(--space-6); }
.main-nav a {
  min-height: 44px; display: inline-flex; align-items: center;
  color: var(--color-text-muted); font-size: var(--text-sm); font-weight: 500;
}
.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a[aria-current="page"] { color: var(--color-text); }
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}
.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  width: 44px; height: 44px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text);
}
.theme-toggle:hover { border-color: var(--color-primary); }

/* ── Buttons ─────────────────────────────────────── */
.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full); border: 1px solid transparent;
  font-size: var(--text-sm); font-weight: 700;
}
.button:hover { transform: translateY(-1px); }
.button-primary {
  background: linear-gradient(135deg, var(--color-primary), color-mix(in srgb, var(--color-primary) 72%, var(--color-yellow)));
  color: #06101d; box-shadow: var(--shadow-sm);
}
.button-primary:hover { filter: brightness(1.06); }
.button-secondary { background: var(--color-surface); border-color: var(--color-border); color: var(--color-text); }
.button-secondary:hover { border-color: var(--color-primary); }
.button-block { width: 100%; }

/* ── Cards / Panels ──────────────────────────────── */
.card {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}
.card-tag, .pricing-label, .portfolio-type, .blog-tag {
  display: inline-flex; margin-bottom: var(--space-4);
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-full);
  background: var(--color-primary-highlight); color: var(--color-primary);
  font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
}
.card h3 { font-size: var(--text-lg); margin-bottom: var(--space-3); }
.card p  { font-size: var(--text-sm); }
.card ul { margin-top: var(--space-5); display: grid; gap: var(--space-3); color: var(--color-text-muted); }
.card li { position: relative; padding-left: 1.1rem; font-size: var(--text-sm); }
.card li::before {
  content: ""; position: absolute; left: 0; top: 0.62em;
  width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--color-yellow);
}

/* ── Grids ───────────────────────────────────────── */
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--space-6); }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--space-6); }

/* ── Hero (index) ────────────────────────────────── */
.hero-grid { display: grid; grid-template-columns: 1.25fr 0.9fr; gap: var(--space-10); align-items: center; }
.hero-copy h1 { font-size: var(--text-2xl); max-width: 14ch; margin-bottom: var(--space-5); }
.hero-text { font-size: var(--text-base); margin-bottom: var(--space-6); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-8); }
.hero-summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: var(--space-4); }
.hero-summary-card {
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.02); padding: var(--space-5);
}
.hero-summary-card h3 { font-size: var(--text-sm); margin-bottom: var(--space-2); }
.hero-summary-card p  { font-size: var(--text-xs); margin: 0; }
.hero-summary-card .card-link {
  display: inline-flex; align-items: center; gap: 0.3rem;
  margin-top: var(--space-3); font-size: var(--text-xs); font-weight: 700;
  color: var(--color-primary);
}
.hero-summary-card .card-link:hover { color: var(--color-primary-hover); }

/* ── Status panel (hero sidebar) ─────────────────── */
.hero-panel {
  padding: var(--space-4); border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(77,163,255,0.08), rgba(255,255,255,0.02));
  box-shadow: var(--shadow-lg);
}
.status-card {
  background: var(--color-surface); border-radius: calc(var(--radius-xl) - var(--space-4));
  padding: var(--space-6); border: 1px solid var(--color-border);
}
.status-head { display: flex; align-items: center; gap: var(--space-2); color: var(--color-text); font-weight: 700; margin-bottom: var(--space-5); }
.status-dot {
  width: 0.75rem; height: 0.75rem; border-radius: 50%; background: var(--color-yellow);
  box-shadow: 0 0 0 0.35rem var(--color-yellow-highlight);
}
.status-metrics { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--space-4); margin-bottom: var(--space-6); }
.status-metrics article {
  padding: var(--space-4); border-radius: var(--radius-lg);
  background: var(--color-surface-2); border: 1px solid var(--color-border);
}
.status-metrics strong { display: block; font-size: var(--text-lg); color: var(--color-text); margin-bottom: var(--space-2); }
.status-metrics span   { color: var(--color-text-muted); font-size: var(--text-sm); }
.terminal-window  { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-border); background: #07101c; }
.terminal-bar     { display: flex; gap: 0.35rem; padding: var(--space-3); background: #0d1b2c; }
.terminal-bar span{ width: 0.75rem; height: 0.75rem; border-radius: 50%; background: #27415f; }
.terminal-window pre { padding: var(--space-5); color: #b9cff1; font-size: 0.88rem; line-height: 1.8; overflow-x: auto; }

/* ── About ───────────────────────────────────────── */
.about-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--space-10); align-items: start; }
.values-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--space-4); }
.value-card { padding: var(--space-5); border-radius: var(--radius-lg); border: 1px solid var(--color-border); background: var(--color-surface); }
.value-card h3 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-2); }
.value-card p  { font-size: var(--text-sm); margin: 0; }

/* ── Services ────────────────────────────────────── */
.services-main { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: var(--space-6); align-items: stretch; }
.service-featured { grid-row: span 2; background: linear-gradient(180deg, var(--color-surface), color-mix(in srgb, var(--color-primary-highlight) 55%, var(--color-surface))); }

/* ── Portfolio ───────────────────────────────────── */
.portfolio-case { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: var(--space-8); align-items: start; border-bottom: 1px solid var(--color-divider); padding-bottom: var(--space-10); margin-bottom: var(--space-10); }
.portfolio-case:last-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.portfolio-meta span { display: block; margin-bottom: var(--space-2); font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-faint); }
.portfolio-meta h3  { font-size: var(--text-xl); margin-bottom: var(--space-4); }
.portfolio-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-5); }
.portfolio-tags span { padding: var(--space-2) var(--space-3); border-radius: var(--radius-full); background: var(--color-surface-offset); color: var(--color-text-muted); font-size: var(--text-xs); }
.portfolio-details h4 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-3); }
.portfolio-details p  { font-size: var(--text-sm); margin-bottom: var(--space-4); }
.outcome-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--space-4); margin-top: var(--space-5); }
.outcome-item { padding: var(--space-4); border-radius: var(--radius-lg); background: var(--color-surface); border: 1px solid var(--color-border); text-align: center; }
.outcome-item strong { display: block; font-size: var(--text-xl); color: var(--color-primary); margin-bottom: var(--space-1); }
.outcome-item span   { font-size: var(--text-xs); color: var(--color-text-muted); }

/* ── Pricing ─────────────────────────────────────── */
.pricing-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--space-6); }
.pricing-card { padding: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-xl); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.pricing-featured { border-color: color-mix(in srgb, var(--color-primary) 50%, var(--color-border)); transform: translateY(-0.5rem); box-shadow: var(--shadow-md); }
.price { margin-block: var(--space-4); font-size: var(--text-xl); font-weight: 800; color: var(--color-text); }
.faq-list { display: grid; gap: var(--space-4); }
.faq-item { padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.faq-item h3 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-2); }
.faq-item p  { font-size: var(--text-sm); margin: 0; }

/* ── Contact ─────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: var(--space-10); align-items: start; }
.contact-meta-list { display: grid; gap: var(--space-4); margin-top: var(--space-6); }
.contact-meta-list article { padding: var(--space-5); border: 1px solid var(--color-border); background: var(--color-surface); border-radius: var(--radius-lg); }
.contact-meta-list h3 { font-size: var(--text-sm); font-weight: 700; margin-bottom: var(--space-2); }
.contact-meta-list p  { font-size: var(--text-sm); margin: 0; }
.contact-form-panel { padding: var(--space-6); border: 1px solid var(--color-border); background: var(--color-surface); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); }
.contact-form { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--space-4); }
.form-group { display: grid; gap: var(--space-2); }
.form-group-full { grid-column: 1 / -1; }
label { color: var(--color-text); font-size: var(--text-sm); font-weight: 600; }
input, textarea, select {
  width: 100%; border: 1px solid var(--color-border); background: var(--color-surface-2);
  border-radius: var(--radius-md); padding: 0.95rem 1rem;
}
input::placeholder, textarea::placeholder { color: var(--color-text-faint); }
input:focus, textarea:focus, select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem var(--color-primary-highlight);
  outline: none;
}
.checkbox-label { display: flex; align-items: flex-start; gap: var(--space-3); font-weight: 500; color: var(--color-text-muted); }
.checkbox-label input { width: 1.1rem; height: 1.1rem; margin-top: 0.22rem; accent-color: var(--color-primary); }
.form-note { margin-top: var(--space-3); font-size: var(--text-xs); color: var(--color-text-faint); }

/* ── Unsubscribe ─────────────────────────────────── */
.unsub-card { max-width: 560px; margin-inline: auto; padding: var(--space-10); text-align: center; }
.unsub-card h1 { font-size: var(--text-xl); margin-bottom: var(--space-4); }
.unsub-card p  { margin-inline: auto; margin-bottom: var(--space-6); }
.unsub-form { display: grid; gap: var(--space-4); text-align: left; }
.unsub-confirm { margin-top: var(--space-5); padding: var(--space-5); border-radius: var(--radius-lg); background: var(--color-primary-highlight); color: var(--color-primary); font-size: var(--text-sm); font-weight: 600; text-align: center; display: none; }
.unsub-confirm.visible { display: block; }

/* ── Legal pages ─────────────────────────────────── */
.legal-body { display: grid; gap: var(--space-8); }
.legal-body section h2 { font-size: var(--text-lg); margin-bottom: var(--space-3); }
.legal-body section p  { font-size: var(--text-sm); margin-bottom: var(--space-3); }
.legal-body section p:last-child { margin-bottom: 0; }

/* ── Trust bar ───────────────────────────────────── */
.trust-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--space-6); }
.trust-item { padding: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-xl); background: var(--color-surface); }
.trust-label { display: inline-block; color: var(--color-yellow); font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: var(--space-3); }

/* ── Footer ──────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--color-divider); padding-top: var(--space-12); padding-bottom: var(--space-6); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.8fr; align-items: start; gap: var(--space-6); }
.site-footer h2 { margin-bottom: var(--space-4); font-size: var(--text-lg); }
.site-footer h3 { margin-bottom: var(--space-4); font-size: var(--text-base); }
.site-footer ul { display: grid; gap: var(--space-3); }
.site-footer a  { color: var(--color-text-muted); }
.site-footer a:hover { color: var(--color-primary); }
.footer-bottom { margin-top: var(--space-8); padding-top: var(--space-5); border-top: 1px solid var(--color-divider); }
.footer-bottom p { font-size: var(--text-xs); color: var(--color-text-faint); margin: 0; }

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 1080px) {
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-summary-grid, .services-main { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .portfolio-case { grid-template-columns: 1fr; }
  .trust-grid, .pricing-grid, .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .service-featured { grid-row: auto; }
  .pricing-featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .main-nav { display: none; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 1.5rem), var(--content-default)); }
  .hero-summary-grid, .services-main, .trust-grid, .pricing-grid, .grid-3, .grid-2,
  .status-metrics, .values-grid, .contact-form, .outcome-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-copy h1 { max-width: 100%; }
  .hero-actions .button { width: 100%; }
  .button-block { width: 100%; }
}