/* ==========================================================================
   Keraunos Enterprises LLC — Stylesheet
   Black + silver, corporate, Material-influenced elevation system.
   Sections: Tokens, Reset, Base, Layout, Header, Buttons, Hero, Panels,
   Mission, Principles, Companies, CTA, Page hero, About, Contact, Footer,
   Motion, Responsive.
   Edit the custom properties in :root to re-theme the whole site.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Color — near-black surfaces, silver hairlines, restrained steel accent */
  --color-bg: #0a0a0b;
  --color-bg-elevated: #0e0e10;
  --color-surface: #131315;
  --color-surface-hover: #18181b;
  --color-border: #262629;
  --color-border-strong: #3a3a3f;
  --color-silver: #c7c9cf;
  --color-silver-bright: #eceef1;
  --color-text: #f2f2f4;
  --color-text-secondary: #a3a6ad;
  --color-text-tertiary: #6e7178;
  --color-accent: #b7bac2;      /* steel-silver, used for links/hover states */
  --color-focus: #9fb4ff;        /* kept distinct from silver so focus is unambiguous */

  --gradient-silver: linear-gradient(135deg, #eceef1 0%, #9a9ea8 100%);
  --gradient-border: linear-gradient(135deg, rgba(236, 238, 241, 0.35), rgba(236, 238, 241, 0.03));

  /* Typography — Material-adjacent, corporate */
  --font-display: "Roboto", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Roboto", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, monospace;

  /* Layout — tighter scale than a typical marketing page, for a one-page feel */
  --max-width: 1120px;
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1.25rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 4.5rem;

  /* Shape */
  --radius-sm: 6px;
  --radius-md: 10px;

  /* Elevation — layered shadows standing in for Material's z-depth, tuned for dark UI */
  --elevation-1: 0 1px 2px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.02);
  --elevation-2: 0 4px 14px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.03);
  --elevation-3: 0 10px 28px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.04);

  /* Motion */
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --duration-fast: 150ms;
  --duration-med: 260ms;
}

/* --------------------------------------------------------------------------
   2. Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
}

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

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

ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, p, figure {
  margin: 0;
}

/* --------------------------------------------------------------------------
   3. Base
   -------------------------------------------------------------------------- */
body {
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(255, 255, 255, 0.045), transparent 60%);
  background-repeat: no-repeat;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

p {
  color: var(--color-text-secondary);
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--color-silver-bright);
  color: #0a0a0b;
  font-weight: 700;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

hr.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* --------------------------------------------------------------------------
   4. Layout helpers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section {
  padding-block: var(--space-xl);
  position: relative;
}

.section--tight {
  padding-block: var(--space-lg);
}

.section-head {
  max-width: 620px;
  margin-bottom: var(--space-md);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

.eyebrow::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--gradient-silver);
  display: inline-block;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  margin-bottom: var(--space-2xs);
}

.section-head p {
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   5. Header / Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 11, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.85rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 7px;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
}

.brand-mark span {
  background: var(--gradient-silver);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links a {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  padding: 0.3rem 0.05rem;
  position: relative;
  transition: color var(--duration-fast) var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 1px;
  background: var(--gradient-silver);
  transition: width var(--duration-fast) var(--ease);
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a[aria-current="page"]::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.4rem;
  cursor: pointer;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text);
}

/* --------------------------------------------------------------------------
   6. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.01em;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease),
    border-color var(--duration-fast) var(--ease),
    background var(--duration-fast) var(--ease),
    box-shadow var(--duration-fast) var(--ease);
}

.btn-primary {
  background: var(--gradient-silver);
  color: #0a0a0b;
  box-shadow: var(--elevation-1);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: var(--elevation-2);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--color-silver);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   7. Hero — compact, single view-adjacent, no oversized whitespace
   -------------------------------------------------------------------------- */
.hero {
  padding-block: var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--space-lg);
  align-items: center;
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.hero .tagline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--color-silver);
  max-width: 36ch;
  margin-bottom: var(--space-sm);
}

.hero .lede {
  font-size: 0.98rem;
  max-width: 52ch;
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

/* Compact stat/figure panel that fills the hero's second column */
.hero-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-2);
  padding: var(--space-md);
}

.hero-panel dl {
  display: grid;
  gap: var(--space-sm);
}

.hero-panel .stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-block: var(--space-2xs);
  border-bottom: 1px solid var(--color-border);
}

.hero-panel .stat-row:last-child {
  border-bottom: none;
}

.hero-panel dt {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-tertiary);
  letter-spacing: 0.03em;
}

.hero-panel dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   8. Panel — the site's card primitive (Material "Paper" influenced):
   rounded corners, hairline silver-gradient border, layered shadow that
   deepens on hover/focus. Used for principle cards, company cards, and
   the about/contact info blocks.
   -------------------------------------------------------------------------- */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-1);
  padding: var(--space-sm);
  position: relative;
  transition: border-color var(--duration-med) var(--ease),
    box-shadow var(--duration-med) var(--ease),
    background var(--duration-med) var(--ease),
    transform var(--duration-med) var(--ease);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient-border);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-med) var(--ease);
}

.panel:hover,
.panel:focus-within {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
  box-shadow: var(--elevation-2);
  transform: translateY(-2px);
}

.panel:hover::before,
.panel:focus-within::before {
  opacity: 1;
}

.panel h3 {
  font-size: 1.02rem;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.panel p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   9. Mission section
   -------------------------------------------------------------------------- */
.mission {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}

.mission-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: start;
}

.mission-copy p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.mission-copy p:last-child {
  margin-bottom: 0;
}

.mission-list-label {
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: var(--space-xs);
}

.mission-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.mission-list li {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  padding: 0.75rem var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.mission-list li:last-child {
  border-bottom: none;
}

.mission-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gradient-silver);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   10. Principles
   -------------------------------------------------------------------------- */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-sm);
}

.principle-icon {
  width: 34px;
  height: 34px;
  margin-bottom: var(--space-xs);
  color: var(--color-silver);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.principle-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   11. Companies
   -------------------------------------------------------------------------- */
.companies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-sm);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-bottom: var(--space-xs);
}

.chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.chip-active {
  color: #d9f7e3;
  background: rgba(90, 200, 140, 0.12);
  border: 1px solid rgba(90, 200, 140, 0.28);
}

.chip-active::before {
  background: #6fd39a;
}

.chip-pending {
  color: var(--color-text-tertiary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-strong);
}

.chip-pending::before {
  background: var(--color-text-tertiary);
}

.company-card.is-placeholder {
  border-style: dashed;
}

.company-logo {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--gradient-silver);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xs);
  font-family: var(--font-display);
  font-weight: 700;
  color: #0a0a0b;
  font-size: 0.95rem;
}

.company-logo.is-placeholder-logo {
  background: var(--color-bg-elevated);
  border: 1px dashed var(--color-border-strong);
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   12. CTA band
   -------------------------------------------------------------------------- */
.cta-band {
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.cta-band h2 {
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  margin-bottom: var(--space-2xs);
}

.cta-band p {
  max-width: 48ch;
  margin-inline: auto;
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
}

.cta-band .hero-actions {
  justify-content: center;
}

/* --------------------------------------------------------------------------
   13. Page hero (About / Companies / Contact interior header)
   -------------------------------------------------------------------------- */
.page-hero {
  padding-block: var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  font-size: clamp(1.75rem, 3.6vw, 2.4rem);
  margin-bottom: var(--space-xs);
}

.page-hero p {
  font-size: 0.98rem;
  max-width: 58ch;
}

/* --------------------------------------------------------------------------
   14. About page specifics
   -------------------------------------------------------------------------- */
.about-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-lg);
}

.about-content h2 {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.about-content p {
  font-size: 0.95rem;
  margin-bottom: var(--space-xs);
}

.focus-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.focus-list .panel {
  padding: var(--space-xs) var(--space-sm);
}

.focus-list h3 {
  font-size: 0.95rem;
}

.focus-list p {
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   15. Contact page
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: var(--space-lg);
  align-items: start;
}

.contact-info h2 {
  font-size: 1.15rem;
  margin-bottom: var(--space-xs);
}

.contact-info p {
  font-size: 0.95rem;
}

.contact-info .email-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.98rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-strong);
  padding-bottom: 0.25rem;
  margin-top: var(--space-sm);
  transition: border-color var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease);
}

.contact-info .email-link:hover,
.contact-info .email-link:focus-visible {
  color: var(--color-silver-bright);
  border-color: var(--color-silver);
}

.contact-form-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-1);
  padding: var(--space-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form-field {
  margin-bottom: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-field label {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

.form-field input,
.form-field textarea {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.68rem 0.85rem;
  color: var(--color-text);
  font-size: 0.92rem;
  transition: border-color var(--duration-fast) var(--ease);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--color-silver);
  outline: none;
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  margin-top: var(--space-sm);
}

.form-status {
  margin-top: var(--space-sm);
  font-size: 0.86rem;
  color: var(--color-silver-bright);
  min-height: 1.2em;
}

/* --------------------------------------------------------------------------
   16. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-md);
  background: var(--color-bg-elevated);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-brand .brand-mark {
  width: 26px;
  height: 26px;
  font-size: 0.85rem;
}

.footer-brand-text {
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  margin-top: 0.15rem;
}

.footer-links {
  display: flex;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-text);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-text-tertiary);
  width: 100%;
  padding-top: var(--space-sm);
  margin-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   17. Scroll-reveal
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn-primary:hover,
  .btn-secondary:hover,
  .panel:hover {
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   18. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .hero-inner,
  .mission-grid,
  .about-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .nav-links {
    position: fixed;
    inset: 60px 0 0 0;
    height: calc(100vh - 60px);
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md);
    gap: var(--space-md);
    transform: translateX(100%);
    transition: transform var(--duration-med) var(--ease);
    border-top: 1px solid var(--color-border);
  }

  .nav-links.is-open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.05rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .cta-band .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}