/* ==========================================================================
   Castellum Capital Management — Editorial Research Interface
   Signal-focused, calm, narrative-driven
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=IBM+Plex+Sans:wght@300;400;500&display=swap');

:root {
  /* Palette — aligned with logo, calm and analytical */
  --bg-deep: #0d1320;
  --bg-surface: #131b2b;
  --bg-elevated: #1a2438;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  --text-primary: #e8eae9;
  --text-secondary: #9ca3ab;
  --text-muted: #6b7280;
  --accent: #c4b896;
  --accent-subtle: rgba(196, 184, 150, 0.25);
  --link: #c4b896;
  --link-hover: #d4c9a8;

  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;

  /* Spacing & rhythm */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --max-width: 720px;
  --max-width-wide: 960px;

  /* Motion — slow, intentional */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-slow: 0.6s;
  --duration-medium: 0.4s;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Abstract market texture — subtle lines */
body::before {
  content: '';
  position: fixed;
  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: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* Wave / cycle accent — very subtle */
body::after {
  content: '';
  position: fixed;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 100%;
  background: radial-gradient(
    ellipse 80% 50% at 50% 0%,
    var(--accent-subtle) 0%,
    transparent 50%
  );
  pointer-events: none;
  z-index: 0;
}

.o-page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Header — narrative navigation
   ========================================================================== */

.o-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.o-header__logo {
  display: block;
  height: 36px;
  width: auto;
}

.o-header__logo img {
  height: 100%;
  width: auto;
  object-fit: contain;
  display: block;
}

.o-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  align-items: center;
}

.o-nav__link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--duration-medium) var(--ease-out);
}

.o-nav__link:hover,
.o-nav__link[aria-current="page"] {
  color: var(--text-primary);
}

.o-nav__link[aria-current="page"] {
  border-bottom: 1px solid var(--accent);
}

/* Primary persistent action — text-based */
.c-follow {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--duration-medium) var(--ease-out);
}

.c-follow:hover {
  color: var(--link-hover);
}

.c-follow::after {
  content: ' →';
  opacity: 0.8;
}

/* ==========================================================================
   Main content
   ========================================================================== */

.o-main {
  flex: 1;
  padding: var(--space-xl) var(--space-lg) var(--space-2xl);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  width: 100%;
}

/* ==========================================================================
   Typography — editorial
   ========================================================================== */

h1, .t-display {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-lg);
  color: var(--text-primary);
}

h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.75rem;
  line-height: 1.3;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--text-primary);
}

h3 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: var(--space-lg) 0 var(--space-sm);
}

p {
  margin: 0 0 var(--space-md);
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

a:not([class]) {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-subtle);
  transition: color var(--duration-medium) var(--ease-out), border-color var(--duration-medium) var(--ease-out);
}

a:not([class]):hover {
  color: var(--link-hover);
  border-bottom-color: var(--accent);
}

/* ==========================================================================
   Text-based actions (no classic buttons)
   ========================================================================== */

.c-action {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-top: var(--space-sm);
  transition: color var(--duration-medium) var(--ease-out), gap var(--duration-medium) var(--ease-out);
}

.c-action:hover {
  color: var(--link-hover);
  gap: 0.5em;
}

.c-action::after {
  content: '→';
  font-weight: 400;
}

/* ==========================================================================
   Hero / landing
   ========================================================================== */

.c-hero {
  padding: var(--space-2xl) 0;
}

.c-hero__label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.c-hero__title {
  margin-bottom: var(--space-md);
}

.c-hero__lead {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text-secondary);
  max-width: var(--max-width);
  margin-bottom: var(--space-xl);
}

/* ==========================================================================
   Section cards / entry points
   ========================================================================== */

.c-lenses {
  display: grid;
  gap: 1px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--space-xl);
}

.c-lens {
  display: block;
  padding: var(--space-lg);
  background: var(--bg-surface);
  color: inherit;
  text-decoration: none;
  transition: background var(--duration-slow) var(--ease-out);
}

.c-lens:hover {
  background: var(--bg-elevated);
}

.c-lens__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs);
}

.c-lens__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ==========================================================================
   Content sections (About, etc.)
   ========================================================================== */

.o-prose {
  max-width: var(--max-width);
}

.o-prose p + p {
  margin-top: var(--space-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.o-footer {
  padding: var(--space-lg) var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.o-footer__legal {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.o-footer__links {
  display: flex;
  gap: var(--space-lg);
}

.o-footer__links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-medium) var(--ease-out);
}

.o-footer__links a:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   Page transitions (slow, intentional)
   ========================================================================== */

.o-main {
  animation: fadeIn var(--duration-slow) var(--ease-out);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  .o-header {
    padding: var(--space-sm) var(--space-md);
  }

  .o-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .o-main {
    padding: var(--space-lg) var(--space-md) var(--space-xl);
  }

  .c-hero {
    padding: var(--space-xl) 0;
  }

  .o-footer {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md);
  }
}