/* =========================================================================
   CIS — Cyber Information Security
   Design system + shared styles
   ========================================================================= */

:root {
  /* Brand palette — deep navy base with a cyan security-tech accent */
  --ink-900: #060c18;
  --ink-800: #0b1424;
  --ink-700: #101d33;
  --ink-600: #16273f;
  --navy:    #0d1b2e;

  --surface:      #ffffff;
  --surface-alt:  #f5f8fc;
  --surface-line: #e3ebf3;

  --text:        #0d1b2e;
  --text-soft:   #45566b;
  --text-mut:    #6b7d94;
  --text-invert: #eef4fb;
  --text-invert-soft: #a9bcd4;

  --accent:      #17c3d4;   /* cyan */
  --accent-2:    #2f7cf6;   /* electric blue */
  --accent-deep: #0f8f9d;
  --accent-soft: rgba(23, 195, 212, 0.12);

  --danger: #ef4444;
  --ok:     #22c55e;

  /* Type */
  --font-display: "Space Grotesk", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;

  /* Layout */
  --container: 1160px;
  --radius: 14px;
  --radius-lg: 22px;
  --gap: clamp(1rem, 2.5vw, 2rem);

  --shadow-sm: 0 1px 2px rgba(9, 20, 38, .06), 0 2px 6px rgba(9, 20, 38, .06);
  --shadow-md: 0 8px 24px rgba(9, 20, 38, .10);
  --shadow-lg: 0 24px 60px rgba(9, 20, 38, .18);

  --ring: 0 0 0 3px rgba(23, 195, 212, .35);
}

/* -------- Base -------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--surface);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 .5em;
  color: var(--text);
  font-weight: 600;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1rem; }

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 6px; }

/* -------- Layout helpers -------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.1rem, 4vw, 2rem);
}

.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section-alt { background: var(--surface-alt); }
.section-ink {
  background: radial-gradient(1200px 600px at 80% -10%, rgba(47,124,246,.18), transparent 60%),
              linear-gradient(180deg, var(--ink-800), var(--ink-900));
  color: var(--text-invert);
}
.section-ink h1, .section-ink h2, .section-ink h3 { color: #fff; }
.section-ink p { color: var(--text-invert-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 1rem;
}
.section-ink .eyebrow { color: var(--accent); }
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: currentColor;
  display: inline-block;
}

.section-head { max-width: 720px; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head.center { margin-inline: auto; text-align: center; }

.lead { font-size: 1.16rem; color: var(--text-soft); }
.section-ink .lead { color: var(--text-invert-soft); }

.muted { color: var(--text-mut); }

/* -------- Buttons -------- */
.btn {
  --btn-bg: var(--accent);
  --btn-fg: #04222a;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .98rem;
  line-height: 1;
  padding: .95rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #03212a;
  box-shadow: 0 10px 26px rgba(23,195,212,.35);
}
.btn-accent:hover { box-shadow: 0 14px 34px rgba(23,195,212,.45); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--surface-line);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent-deep); }

.section-ink .btn-outline,
.hero .btn-outline,
.page-hero .btn-outline { color: #fff; border-color: rgba(255,255,255,.28); }
.section-ink .btn-outline:hover,
.hero .btn-outline:hover,
.page-hero .btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 1.1rem 1.9rem; font-size: 1.05rem; }

/* -------- Header / nav -------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--surface-line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { width: 40px; height: 40px; flex: 0 0 auto; }
.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: .02em;
  line-height: 1;
  display: flex;
  flex-direction: column;
}
.brand-sub {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: .64rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-mut);
  margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 1.5rem; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  color: var(--text-soft);
  font-weight: 500;
  font-size: .98rem;
  padding: .4rem 0;
  position: relative;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--accent-deep); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--accent); border-radius: 2px;
}

.header-cta { padding-block: .7rem; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--surface-line);
  background: var(--surface);
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px;
  background: var(--text); position: relative; transition: .25s;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: rotate(45deg); top: 0; }
.nav-toggle[aria-expanded="true"] span::after { transform: rotate(-45deg); top: 0; }

/* -------- Hero -------- */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--text-invert);
  background:
    radial-gradient(900px 500px at 12% 0%, rgba(23,195,212,.22), transparent 55%),
    radial-gradient(1000px 620px at 92% 20%, rgba(47,124,246,.22), transparent 55%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(70% 70% at 50% 30%, #000, transparent 80%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(3.5rem, 9vw, 7rem);
  max-width: 860px;
}
.hero h1 { color: #fff; margin-bottom: 1.1rem; }
.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), #7dd3fc 60%, var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { color: var(--text-invert-soft); font-size: 1.2rem; max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }

.hero-badges {
  display: flex; flex-wrap: wrap; gap: 1.2rem 2rem;
  margin-top: 2.6rem; padding-top: 1.8rem;
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-badge {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: .92rem; color: var(--text-invert-soft);
}
.hero-badge svg { color: var(--accent); flex: 0 0 auto; }

/* -------- Cards / grids -------- */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--surface-line);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  height: 100%;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(23,195,212,.4); }

.card-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent-deep);
  margin-bottom: 1.1rem;
}
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--text-soft); margin-bottom: .9rem; }
.card-link {
  font-family: var(--font-display);
  font-weight: 600; font-size: .92rem;
  color: var(--accent-deep);
  display: inline-flex; align-items: center; gap: .35rem;
}
.card-link:hover { gap: .6rem; text-decoration: none; }

/* Featured (infrastructure) card */
.card-feature {
  background:
    radial-gradient(900px 500px at 90% -20%, rgba(47,124,246,.20), transparent 60%),
    linear-gradient(135deg, var(--ink-700), var(--ink-900));
  border: 1px solid var(--ink-600);
  color: var(--text-invert);
  margin-bottom: var(--gap);
  padding: clamp(1.8rem, 3vw, 2.6rem);
}
.card-feature:hover { transform: translateY(-4px); border-color: rgba(23,195,212,.5); }
.card-feature h3 { color: #fff; font-size: 1.55rem; margin-bottom: .6rem; }
.card-feature p { color: var(--text-invert-soft); }
.card-feature .card-icon { background: rgba(23,195,212,.16); color: var(--accent); }
.card-feature .ticks li { color: var(--text-invert-soft); }
.feature-tag {
  display: inline-block; font-family: var(--font-display);
  font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: .5rem;
}
.feature-body {
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem); align-items: center;
}
@media (max-width: 720px) { .feature-body { grid-template-columns: 1fr; } }

/* Feature list */
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: .7rem; }
.ticks li { position: relative; padding-left: 1.9rem; color: var(--text-soft); }
.ticks li::before {
  content: "";
  position: absolute; left: 0; top: .35em;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f8f9d' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 12px; background-repeat: no-repeat; background-position: center;
}
.section-ink .ticks li { color: var(--text-invert-soft); }

/* -------- Stats -------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); text-align: center; }
.stat .stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 3rem);
  line-height: 1;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat .stat-label { color: var(--text-mut); font-size: .95rem; margin-top: .5rem; }
.section-ink .stat .stat-label { color: var(--text-invert-soft); }

/* -------- Split / media -------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }

/* -------- Trust strip -------- */
.trust { display: flex; flex-wrap: wrap; gap: .8rem 1rem; }
.chip {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem 1rem;
  border: 1px solid var(--surface-line);
  background: var(--surface);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 500; font-size: .9rem;
  color: var(--text-soft);
}
.section-ink .chip { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.14); color: var(--text-invert-soft); }
.chip svg { color: var(--accent); }

/* -------- CTA band -------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--ink-700), var(--ink-900));
  border-radius: var(--radius-lg);
  padding: clamp(2.4rem, 5vw, 3.5rem);
  color: #fff;
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}
.cta-band::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(23,195,212,.35), transparent 65%);
}
.cta-band h2 { color: #fff; margin-bottom: .4rem; }
.cta-band p { color: var(--text-invert-soft); margin: 0; max-width: 520px; }
.cta-band .btn { position: relative; z-index: 1; }

/* -------- FAQ -------- */
.faq { max-width: 840px; margin-inline: auto; display: grid; gap: .9rem; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--surface-line);
  border-radius: var(--radius);
  padding: 0 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: border-color .2s;
}
.faq-item[open] { border-color: rgba(23,195,212,.45); }
.faq-item summary {
  list-style: none; cursor: pointer;
  font-family: var(--font-display); font-weight: 600; font-size: 1.06rem;
  color: var(--text); padding: 1.15rem 2.2rem 1.15rem 0; position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: .1rem; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; line-height: 1; color: var(--accent-deep); font-weight: 400; transition: transform .2s;
}
.faq-item[open] summary::after { content: "\2013"; }
.faq-a { padding: 0 0 1.25rem; color: var(--text-soft); }
.faq-a p { margin: 0; line-height: 1.6; }

/* -------- Forms -------- */
.form-card {
  background: var(--surface);
  border: 1px solid var(--surface-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.4rem);
  box-shadow: var(--shadow-md);
}
.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-family: var(--font-display);
  font-weight: 500; font-size: .92rem;
  margin-bottom: .4rem; color: var(--text);
}
.field input, .field textarea, .field select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: .85rem 1rem;
  border: 1px solid var(--surface-line);
  border-radius: 12px;
  background: var(--surface-alt);
  color: var(--text);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--accent); background: #fff; box-shadow: var(--ring);
}
.field textarea { resize: vertical; min-height: 140px; }
.field-hp { position: absolute; left: -9999px; opacity: 0; }

.form-note { font-size: .88rem; color: var(--text-mut); margin-top: .3rem; }
.form-status { margin-top: 1rem; font-weight: 500; display: none; }
.form-status.show { display: block; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: var(--danger); }

/* Contact aside */
.contact-aside { display: grid; gap: 1.2rem; align-content: start; }
.profile-card {
  display: flex; align-items: center; gap: 1.1rem;
  background: var(--surface);
  border: 1px solid var(--surface-line);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow-sm);
}
.profile-avatar {
  width: 74px; height: 74px; flex: 0 0 auto;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  padding: 2px;
  background: var(--surface-alt);
}
.profile-card h4 { margin: 0; font-size: 1.1rem; }
.profile-role { margin: .1rem 0 .35rem; color: var(--text-mut); font-size: .9rem; }
.profile-card .card-link { font-size: .88rem; }
.contact-item { display: flex; gap: .9rem; align-items: flex-start; }
.contact-item .ci-icon {
  width: 44px; height: 44px; flex: 0 0 auto;
  border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent-deep);
}
.contact-item h4 { margin: 0 0 .1rem; font-size: 1rem; }
.contact-item a { color: var(--text-soft); }

/* -------- Footer -------- */
.site-footer {
  background: var(--ink-900);
  color: var(--text-invert-soft);
  padding-block: clamp(3rem, 6vw, 4.5rem) 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-grid h4 {
  color: #fff; font-size: .82rem; letter-spacing: .12em;
  text-transform: uppercase; margin-bottom: 1rem;
}
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.footer-links a { color: var(--text-invert-soft); font-size: .95rem; }
.footer-links a:hover { color: var(--accent); text-decoration: none; }
.footer-brand p { max-width: 320px; margin-top: 1rem; }
.footer-brand .brand-text, .footer-brand .brand { color: #fff; }
.footer-social { display: flex; gap: .7rem; margin-top: 1.3rem; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(255,255,255,.06); color: var(--text-invert);
  transition: background .2s, color .2s;
}
.footer-social a:hover { background: var(--accent); color: #04222a; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  padding-top: 1.6rem; font-size: .88rem; color: var(--text-mut);
}

/* -------- Page hero (interior) -------- */
.page-hero { color: var(--text-invert); }
.page-hero .hero-inner { max-width: 760px; padding-block: clamp(3rem, 7vw, 5rem); }
.page-hero h1 { color: #fff; }

/* -------- Reveal animation -------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* -------- Responsive -------- */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .nav { position: static; }
  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--surface-line);
    box-shadow: var(--shadow-lg);
    padding: .5rem 1.1rem 1.2rem;
    transform: translateY(-120%);
    transition: transform .3s ease;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links li { border-bottom: 1px solid var(--surface-line); }
  .nav-links a { display: block; padding: 1rem .25rem; font-size: 1.05rem; }
  .nav-links a.active::after { display: none; }
  .nav-links .mobile-cta { border-bottom: none; padding-top: 1rem; }
  .nav-links .mobile-cta .btn { width: 100%; justify-content: center; }
}

@media (max-width: 560px) {
  .grid-4, .grid-3, .grid-2, .stats, .footer-grid { grid-template-columns: 1fr; }
  .brand-sub { display: none; }
  .cta-band { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}