/* ============================================
   Halcyon Days Consulting — Dark Theme
   ============================================ */

:root {
  /* Brand blues */
  --color-light: #8ED1F5;
  --color-mid: #53BDF0;
  --color-primary: #2095D4;
  --color-blue: #3080C7;
  --color-dark: #1C6CB1;
  --color-navy: #020F2B;

  /* Dark surfaces */
  --surface-base: #020F2B;
  --surface-raised: #071A38;
  --surface-elevated: #0C2345;
  --surface-overlay: #112D52;

  /* Text */
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-muted: rgba(255, 255, 255, 0.35);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(32, 149, 212, 0.25);

  /* Typography — Gotham first, Montserrat as web fallback */
  --font-family: 'Gotham', 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container-width: 1200px;
  --nav-height: 72px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  --shadow-glow-sm: 0 0 20px rgba(32, 149, 212, 0.06);
  --shadow-glow-md: 0 0 40px rgba(32, 149, 212, 0.08);
  --shadow-glow-lg: 0 4px 48px rgba(32, 149, 212, 0.12);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--surface-base);
  overflow-x: hidden;
}

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

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

h1, h2, h3, h4 {
  line-height: 1.15;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-family);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-mid);
  border-color: var(--color-mid);
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(32, 149, 212, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-default);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 0.95rem;
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* --- Navigation --- */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(2, 15, 43, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-subtle);
}

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

.nav-logo img {
  height: 52px;
  width: auto;
  transition: var(--transition);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  background: rgba(32, 149, 212, 0.15) !important;
  color: var(--color-mid) !important;
  border: 1px solid var(--border-accent);
}

.nav-cta:hover {
  background: var(--color-primary) !important;
  color: #ffffff !important;
  border-color: var(--color-primary) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 10;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero --- */

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

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--surface-base);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 700px 700px at 70% 15%, rgba(32, 149, 212, 0.12), transparent),
    radial-gradient(ellipse 500px 500px at 15% 75%, rgba(28, 108, 177, 0.08), transparent),
    radial-gradient(ellipse 300px 300px at 90% 80%, rgba(83, 189, 240, 0.05), transparent);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  padding: 60px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-mid);
  background: rgba(32, 149, 212, 0.08);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero h1 {
  color: #ffffff;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 1;
}

.hero-scroll-indicator span {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.4; transform: scaleY(0.6); }
}

/* --- Section Labels --- */

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-mid);
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 72px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* --- About Section --- */

.about {
  background: var(--surface-raised);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content h2 {
  margin-bottom: 24px;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 40px;
}

.stat {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  opacity: 0;
  transform: translateY(16px);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.stat-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(32, 149, 212, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  color: var(--color-mid);
}

.stat-icon svg {
  width: 22px;
  height: 22px;
}

.stat-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.stat-text span {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.about-image-frame {
  position: relative;
  width: 100%;
  max-width: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-frame::before {
  content: '';
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(32, 149, 212, 0.06) 0%, transparent 70%);
  filter: blur(30px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.about-logo {
  width: 85%;
  height: auto;
  position: relative;
  filter: drop-shadow(0 0 24px rgba(32, 149, 212, 0.08));
}

/* --- Capabilities Section --- */

.capabilities {
  background: var(--surface-base);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.capability-card {
  background: var(--surface-raised);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(24px);
}

.capability-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.capability-card:hover {
  border-color: var(--border-accent);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-glow-md);
  transform: translateY(-4px);
}

.capability-card.visible:hover {
  transform: translateY(-4px);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-blue));
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  color: #ffffff;
}

.card-icon svg {
  width: 26px;
  height: 26px;
}

.capability-card h3 {
  margin-bottom: 12px;
}

.capability-card p {
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.7;
}

.capability-card:nth-child(1) { transition-delay: 0ms; }
.capability-card:nth-child(2) { transition-delay: 80ms; }
.capability-card:nth-child(3) { transition-delay: 160ms; }
.capability-card:nth-child(4) { transition-delay: 240ms; }
.capability-card:nth-child(5) { transition-delay: 320ms; }
.capability-card:nth-child(6) { transition-delay: 400ms; }

/* --- Differentiators Section --- */

.differentiators {
  background: var(--surface-raised);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.diff-content h2 {
  margin-bottom: 16px;
}

.diff-intro {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 40px;
}

.diff-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.diff-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  opacity: 0;
  transform: translateX(-16px);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.diff-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.diff-item:nth-child(1) { transition-delay: 0ms; }
.diff-item:nth-child(2) { transition-delay: 100ms; }
.diff-item:nth-child(3) { transition-delay: 200ms; }
.diff-item:nth-child(4) { transition-delay: 300ms; }

.diff-number {
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-mid);
  background: rgba(32, 149, 212, 0.1);
  border: 1px solid var(--border-accent);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  margin-top: 2px;
}

.diff-item h4 {
  margin-bottom: 4px;
}

.diff-item p {
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.7;
}

.diff-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.diff-visual-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  width: 100%;
  max-width: 400px;
}

.metric-card {
  background: var(--surface-elevated);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  border: 1px solid var(--border-subtle);
  opacity: 0;
  transform: scale(0.92);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.metric-card.visible {
  opacity: 1;
  transform: scale(1);
}

.metric-card:nth-child(1) { transition-delay: 0ms; }
.metric-card:nth-child(2) { transition-delay: 100ms; }
.metric-card:nth-child(3) { transition-delay: 200ms; }
.metric-card:nth-child(4) { transition-delay: 300ms; }

.metric-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow-sm);
  transform: scale(1.03);
}

.metric-card.visible:hover {
  transform: scale(1.03);
}

.metric-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(32, 149, 212, 0.12);
  border-radius: 50%;
  color: var(--color-mid);
}

.metric-icon svg {
  width: 24px;
  height: 24px;
}

.metric-card span {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* --- Contact Section --- */

.contact {
  background: var(--surface-base);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-content h2 {
  margin-bottom: 16px;
}

.contact-content > p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-card {
  background: var(--surface-raised);
  border-radius: var(--radius-md);
  padding: 36px;
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-item:nth-child(1) { transition-delay: 0ms; }
.contact-item:nth-child(2) { transition-delay: 80ms; }
.contact-item:nth-child(3) { transition-delay: 160ms; }
.contact-item:nth-child(4) { transition-delay: 240ms; }

.contact-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(32, 149, 212, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  color: var(--color-mid);
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-item strong {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-item span {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.6;
}

.contact-item a {
  font-size: 0.95rem;
  color: var(--color-mid);
  font-weight: 500;
  transition: var(--transition);
}

.contact-item a:hover {
  color: var(--color-light);
}

/* --- Footer --- */

.footer {
  background: var(--surface-base);
  padding: 48px 0 32px;
  border-top: 1px solid var(--border-subtle);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-logo {
  height: 52px;
  width: auto;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 300px;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-mid);
}

.footer-bottom {
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Responsive --- */

@media (max-width: 1024px) {
  .about-grid,
  .diff-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-visual {
    order: -1;
  }

  .about-image-frame {
    max-width: 300px;
  }

  .diff-visual-inner {
    max-width: 360px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--surface-raised);
    flex-direction: column;
    align-items: stretch;
    padding: 100px 32px 40px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -8px 0 40px rgba(0, 0, 0, 0.4);
    border-left: 1px solid var(--border-subtle);
  }

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

  .nav-links a {
    color: var(--text-secondary) !important;
    padding: 12px 16px;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
  }

  .nav-links a:hover {
    background: rgba(255, 255, 255, 0.05) !important;
    color: var(--text-primary) !important;
  }

  .nav-cta {
    margin-top: 16px;
    text-align: center;
    justify-content: center;
    display: flex;
  }

  .capabilities-grid {
    grid-template-columns: 1fr;
  }

  .hero-content {
    padding: 40px 0;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
    justify-content: center;
  }

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 16px 24px;
  }

  .contact-content .btn-lg {
    width: 100%;
    justify-content: center;
  }

  .hero-scroll-indicator {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 64px 0;
  }

  .diff-visual-inner {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .metric-card {
    padding: 24px 16px;
  }

  .capability-card {
    padding: 28px 24px;
  }
}