/* QENTA Strategy — Corporate homepage */

:root {
  --color-bg: #0a0f14;
  --color-bg-elevated: #111a22;
  --color-bg-card: #152029;
  --color-surface: #1c2a36;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e8edf2;
  --color-text-muted: #8a9bab;
  --color-accent: #c4a35a;
  --color-accent-dim: rgba(196, 163, 90, 0.15);
  --color-accent-hover: #d4b56a;
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
  --container: min(1120px, 92vw);
  --header-h: 72px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(10, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(10, 15, 20, 0.95);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.logo span {
  font-weight: 500;
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color 0.2s var(--ease);
}

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

.nav-cta {
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--color-accent);
  color: var(--color-accent) !important;
  border-radius: 2px;
}

.nav-cta:hover {
  background: var(--color-accent-dim);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(196, 163, 90, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(28, 42, 54, 0.9) 0%, transparent 50%),
    linear-gradient(165deg, #0a0f14 0%, #111a22 45%, #0d1218 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black 30%, transparent 85%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 4rem 0 6rem;
  max-width: 720px;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw, 4.25rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-lead {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border: 1px solid var(--color-accent);
}

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

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

.btn-outline:hover {
  border-color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--color-text-muted);
  max-width: 560px;
  font-weight: 300;
}

/* About */
.about {
  background: var(--color-bg-elevated);
  border-block: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
  margin-top: 3rem;
}

.about-intro .lead {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.about-intro p,
.about-highlight p {
  color: var(--color-text-muted);
  font-weight: 300;
}

.about-highlight blockquote {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-style: italic;
  font-weight: 500;
  line-height: 1.45;
  color: var(--color-text);
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
  margin-bottom: 1.25rem;
}

/* Pillars */
.pillars {
  padding: 4rem 0;
}

.pillar-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pillar {
  padding: 2rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  border-radius: 2px;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.pillar:hover {
  border-color: rgba(196, 163, 90, 0.35);
  transform: translateY(-2px);
}

.pillar-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-accent);
  opacity: 0.6;
  margin-bottom: 0.75rem;
}

.pillar h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.pillar p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 300;
}

/* Expertise */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.expertise-card {
  padding: 1.75rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.expertise-card:hover {
  border-color: rgba(196, 163, 90, 0.3);
  background: var(--color-surface);
}

.expertise-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.expertise-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 300;
  line-height: 1.5;
}

.expertise-card-wide {
  grid-column: span 3;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem 1.75rem;
  background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-surface) 100%);
  border-color: rgba(196, 163, 90, 0.2);
}

@media (min-width: 769px) {
  .expertise-card-wide {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }

  .expertise-card-wide h3 {
    margin-bottom: 0;
    min-width: 200px;
  }
}

/* Approach */
.approach {
  background: var(--color-bg-elevated);
  border-block: 1px solid var(--color-border);
}

.approach-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.approach-text h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  margin: 0.5rem 0 1.25rem;
}

.approach-text p {
  color: var(--color-text-muted);
  font-weight: 300;
  max-width: 420px;
}

.approach-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
}

.orbit {
  position: relative;
  width: 280px;
  height: 280px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  animation: orbit-spin 40s linear infinite;
}

.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
  text-align: center;
  width: 100px;
  animation: orbit-counter-center 40s linear infinite;
}

.orbit-node {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 88px;
  margin: -12px 0 0 -44px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: center;
  color: var(--color-text-muted);
  transform: rotate(calc(var(--i) * 90deg)) translateY(-130px) rotate(calc(var(--i) * -90deg));
  animation: orbit-node-counter 40s linear infinite;
}

@keyframes orbit-spin {
  to { transform: rotate(360deg); }
}

@keyframes orbit-counter-center {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(-360deg); }
}

@keyframes orbit-node-counter {
  from {
    transform: rotate(calc(var(--i) * 90deg)) translateY(-130px) rotate(calc(var(--i) * -90deg));
  }
  to {
    transform: rotate(calc(var(--i) * 90deg - 360deg)) translateY(-130px) rotate(calc(var(--i) * -90deg + 360deg));
  }
}

/* Contact */
.contact {
  text-align: center;
  padding: 7rem 0;
}

.contact-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  margin-bottom: 1rem;
}

.contact-inner > p:not(.contact-email-label) {
  color: var(--color-text-muted);
  font-weight: 300;
  max-width: 520px;
  margin: 0 auto 1.5rem;
}

.contact-email-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.contact-email {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2rem;
  transition: color 0.2s var(--ease);
}

.contact-email:hover {
  color: var(--color-accent);
}

.contact .btn {
  margin-top: 0.25rem;
}

/* Footer */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  background: #080c10;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-tagline {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 300;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1.25rem;
}

.footer-contact,
.footer-location {
  text-align: right;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-contact a {
  color: var(--color-accent);
  transition: color 0.2s var(--ease);
}

.footer-contact a:hover {
  color: var(--color-accent-hover);
}

.footer-contact strong,
.footer-location strong {
  color: var(--color-text);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.footer-copy {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  opacity: 0.7;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .approach-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .pillar-list,
  .expertise-grid {
    grid-template-columns: 1fr;
  }

  .expertise-card-wide {
    grid-column: span 1;
  }

  .approach-visual {
    order: -1;
    min-height: 260px;
  }

  .orbit {
    width: 240px;
    height: 240px;
  }

  .orbit-node {
    transform: rotate(calc(var(--i) * 90deg)) translateY(-110px) rotate(calc(var(--i) * -90deg));
  }

  @keyframes orbit-node-counter {
    from {
      transform: rotate(calc(var(--i) * 90deg)) translateY(-110px) rotate(calc(var(--i) * -90deg));
    }
    to {
      transform: rotate(calc(var(--i) * 90deg - 360deg)) translateY(-110px) rotate(calc(var(--i) * -90deg + 360deg));
    }
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 1.5rem;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s var(--ease), opacity 0.35s var(--ease), visibility 0.35s;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links a {
    display: block;
    padding: 1rem 0;
  }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
    display: block;
  }

  .hero-scroll {
    display: none;
  }

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

  .footer-meta {
    align-items: flex-start;
  }

  .footer-contact,
  .footer-location {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .orbit,
  .orbit-center,
  .orbit-node {
    animation: none;
  }

  .scroll-line {
    animation: none;
  }
}