/* ==========================================================================
   IronCurve Capital — Design System
   Dark institutional. Near-black background, off-white text, steel-blue accent.
   ========================================================================== */

/* -------- Reset & base ------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: #0A0E13;
  color: #E8EAED;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  letter-spacing: -0.005em;
}

/* -------- Design tokens (CSS variables) ------------------------------- */
:root {
  --bg-0: #0A0E13;           /* page background */
  --bg-1: #0F1419;           /* card / elevated surface */
  --bg-2: #141A22;           /* hover surface */
  --border: #1E2630;         /* subtle borders */
  --border-strong: #2A3541;  /* emphasized borders */

  --text-primary: #E8EAED;
  --text-secondary: #9BA3AE;
  --text-muted: #6B7480;

  --accent: #4A7A9C;         /* steel blue */
  --accent-bright: #6FA3D0;  /* links, hover */
  --accent-dim: #2E4A5E;     /* subtle accent usage */

  --success: #5C9A7E;
  --warning: #B8956A;
  --danger: #A85C5C;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Menlo, Consolas, monospace;

  --max-w: 1120px;
  --max-w-narrow: 780px;
  --radius: 4px;
  --transition: 150ms ease;
}

/* -------- Typography -------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  max-width: 68ch;
}

strong { color: var(--text-primary); font-weight: 600; }

a {
  color: var(--accent-bright);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: #8FC0E8; }

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  letter-spacing: -0.01em;
}

/* Eyebrow / small label above section titles */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.75rem;
}

/* -------- Layout primitives ------------------------------------------ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.container-narrow {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* -------- Site header & nav ------------------------------------------ */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  background: rgba(10, 14, 19, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Wordmark */
.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-primary);
  white-space: nowrap;
}

.wordmark::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 1rem;
  background: var(--accent);
  position: relative;
  top: 2px;
}

.wordmark span.mark-capital {
  color: var(--text-secondary);
  font-weight: 500;
}

.wordmark:hover { color: var(--text-primary); }

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.25rem 0;
  position: relative;
}

.site-nav a:hover { color: var(--text-primary); }

.site-nav a.active {
  color: var(--text-primary);
}

.site-nav a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent);
}

.site-nav a.locked {
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.site-nav a.locked::before {
  content: "◦ ";
  color: var(--text-muted);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  cursor: pointer;
  font-family: var(--font-sans);
}

/* -------- Main / Sections -------------------------------------------- */
main {
  flex: 1;
}

.section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type { border-bottom: none; }

.section-compact { padding: 3rem 0; }

/* -------- Hero -------------------------------------------------------- */
.hero {
  padding: 7rem 0 6rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
}

.hero-inner {
  max-width: 840px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
}

.hero h1 .accent { color: var(--accent-bright); }

.hero-lede {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.55;
  margin-bottom: 2rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hero-meta-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.hero-meta-value {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

/* Status pill in hero */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background: rgba(74, 122, 156, 0.08);
  border: 1px solid rgba(74, 122, 156, 0.25);
  padding: 0.4rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 0 3px rgba(111, 163, 208, 0.15);
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

/* -------- Pillars (3-col on home) ------------------------------------ */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 2.5rem;
}

.pillar {
  background: var(--bg-1);
  padding: 2rem 1.75rem;
}

.pillar-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  display: block;
}

.pillar h3 {
  margin-bottom: 0.75rem;
  font-size: 1.0625rem;
}

.pillar p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin: 0;
}

/* -------- Feature blocks / sections ---------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}

.split-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding-top: 0.5rem;
}

.split-body > * + * { margin-top: 1rem; }

/* -------- Asset / instrument grid ------------------------------------ */
.asset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.asset-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.asset-card:hover {
  border-color: var(--border-strong);
}

.asset-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.asset-detail {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
}

.asset-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* -------- Principles list -------------------------------------------- */
.principles {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.principle {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
}

.principle-number {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.principle-body h3 {
  font-size: 1.0625rem;
  margin-bottom: 0.5rem;
}

.principle-body p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0;
}

/* -------- Journal styles --------------------------------------------- */
.journal-intro {
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.journal-entries {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.journal-entry {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 3rem;
}

.journal-entry:last-child { border-bottom: none; }

.journal-date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  padding-top: 0.25rem;
}

.journal-date strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  letter-spacing: 0.02em;
}

.journal-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.journal-body > p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.journal-body > p + p { margin-top: 0.75rem; }

.journal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.journal-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
}

.journal-placeholder {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.journal-placeholder strong {
  display: block;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

/* -------- Locked page styles ----------------------------------------- */
.locked-page {
  min-height: 65vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 5rem 1.5rem;
}

.locked-inner {
  max-width: 560px;
}

.locked-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 50%;
  margin-bottom: 2rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.25rem;
}

.locked-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.locked-title {
  font-size: 2rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.locked-description {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.65;
  margin: 0 auto 2rem;
  max-width: 48ch;
}

.locked-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-bright);
  letter-spacing: 0.05em;
  border: 1px solid rgba(74, 122, 156, 0.25);
  background: rgba(74, 122, 156, 0.05);
  padding: 0.65rem 1rem;
  border-radius: var(--radius);
}

.locked-trigger::before {
  content: "→";
  color: var(--accent);
}

/* -------- Buttons / CTAs --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

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

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

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

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
}

.btn-arrow::after {
  content: "→";
  transition: transform var(--transition);
}

.btn-arrow:hover::after { transform: translateX(3px); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* -------- Link cards (at bottom of pages) ---------------------------- */
.link-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.link-card {
  display: block;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), background var(--transition);
}

.link-card:hover {
  border-color: var(--accent);
  background: var(--bg-2);
}

.link-card-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.link-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.link-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.link-card-arrow {
  color: var(--accent-bright);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* -------- Footer ----------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2.5rem;
  margin-top: 4rem;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.site-footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand .wordmark {
  margin-bottom: 1rem;
}

.footer-tagline {
  color: var(--text-secondary);
  font-size: 0.875rem;
  max-width: 38ch;
  line-height: 1.55;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-weight: 500;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.footer-col a:hover { color: var(--text-primary); }

.footer-col .locked {
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-col .locked::before {
  content: "◦";
  color: var(--text-muted);
}

.site-footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-disclaimer {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.6;
  max-width: 70ch;
}

.footer-copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* -------- Utility ---------------------------------------------------- */
.text-mono { font-family: var(--font-mono); }
.text-accent { color: var(--accent-bright); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

/* Decorative divider */
.divider {
  height: 1px;
  background: var(--border);
  margin: 3rem 0;
}

/* Section title cluster */
.section-head {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.section-head p {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-top: 1rem;
}

/* -------- Responsive ------------------------------------------------- */
@media (max-width: 820px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-0);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--border);
  }

  .site-nav.is-open { display: flex; }

  .site-nav a { padding: 0.65rem 0; font-size: 1rem; width: 100%; border-bottom: 1px solid var(--border); }
  .site-nav a:last-child { border-bottom: none; }
  .site-nav a.active::after { display: none; }

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

  .site-header { position: relative; }

  .split { grid-template-columns: 1fr; gap: 1rem; }
  .split-label { border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }

  .journal-entry { grid-template-columns: 1fr; gap: 1rem; }

  .principle { grid-template-columns: 60px 1fr; gap: 1rem; }

  .site-footer-inner { grid-template-columns: 1fr; gap: 2rem; }

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

  .hero { padding: 4rem 0 3.5rem; }
  .section { padding: 3.5rem 0; }
}

/* Focus states for accessibility */
:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

::selection {
  background: var(--accent);
  color: #fff;
}