/* ================================================================
   OBSIDIAN CAPITAL RESEARCH — style.css
   Shared styles across all pages
   ================================================================ */

/* ---- Variables ---- */
:root {
  --bg:            #08080a;
  --bg-surface:    #0f0f12;
  --bg-elevated:   #16161c;
  --border:        rgba(255, 255, 255, 0.065);
  --border-gold:   rgba(193, 160, 90, 0.28);

  --text-primary:  #eee9e1;
  --text-secondary:#7c7770;
  --text-muted:    #44403c;

  --accent:        #c1a05a;
  --accent-light:  #d4b47a;
  --accent-dim:    rgba(193, 160, 90, 0.1);

  --font-display:  'Cormorant Garamond', Georgia, serif;
  --font-body:     'DM Sans', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --nav-height:    68px;
  --container:     1080px;
  --section-pad:   130px;
  --radius:        3px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ---- Noise Overlay (obsidian grain) ---- */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ---- Container ---- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
}

/* ---- Navigation ---- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-height);
  transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(8, 8, 10, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.025em;
  color: var(--text-primary);
  transition: color 0.25s;
  flex-shrink: 0;
}
.nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 44px;
  align-items: center;
}
.nav-links a {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.25s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); }
.nav-links a.active::after,
.nav-links a:hover::after { transform: scaleX(1); }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--text-primary);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle span:nth-child(3) { width: 16px; }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-height); left: 0; right: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  transform: translateY(-110%);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.35s;
  pointer-events: none;
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu ul {
  padding: 28px 48px 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.mobile-menu a {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--text-primary); }

/* ---- Animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.delay-1 { animation-delay: 0.12s; }
.delay-2 { animation-delay: 0.24s; }
.delay-3 { animation-delay: 0.36s; }
.delay-4 { animation-delay: 0.52s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.85s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---- Hero ---- */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 80px) 48px 100px;
  position: relative;
}
/* Radial gold glow behind hero */
#hero::before {
  content: '';
  position: absolute;
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(ellipse at center, rgba(193,160,90,0.055) 0%, transparent 68%);
  pointer-events: none;
}

.hero-eyebrow {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 36px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 7.5vw, 6.2rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 32px;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}
.hero-sub {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 52px;
  max-width: 440px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 14px 30px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(193, 160, 90, 0.22);
}
.btn-ghost {
  border: 1px solid var(--border-gold);
  color: var(--text-secondary);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0.3;
  pointer-events: none;
}
.hero-scroll-hint span {
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 38px;
  background: linear-gradient(to bottom, var(--text-secondary), transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.1); }
}

/* ---- Sections ---- */
section { padding: var(--section-pad) 0; position: relative; }

.section-label {
  font-size: 0.64rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 18px;
}
.section-title em {
  font-style: italic;
  color: var(--accent);
}
.section-sub {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 64px;
  line-height: 1.85;
}

/* Section top border */
section:not(#hero) {
  border-top: 1px solid var(--border);
}

/* ---- About Section ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 88px;
  align-items: start;
}
.about-text p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.95;
  margin-bottom: 22px;
}
.about-credentials {
  border-left: 1px solid var(--border);
  padding-left: 44px;
}
.credential-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.credential-item:first-child { padding-top: 0; }
.credential-item:last-child { border-bottom: none; }
.credential-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1;
}
.credential-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---- Research Grid ---- */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.research-card {
  display: block;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  transition: border-color 0.3s, transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s;
}
a.research-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-5px);
  box-shadow: 0 24px 52px rgba(0,0,0,0.45);
}
.research-card--soon {
  opacity: 0.38;
  cursor: default;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}
.card-sector {
  font-size: 0.64rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}
.card-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
}
.card-title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 14px;
  line-height: 1.2;
}
.card-desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 26px;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 30px;
}
.tag {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 2px;
}
.card-cta {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-cta .arrow { transition: transform 0.22s ease; }
a.research-card:hover .arrow { transform: translateX(5px); }
.card-cta.muted { color: var(--text-muted); }

/* ---- Perspectives / Memos ---- */
.memo-grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.memo-card {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  align-items: start;
  gap: 32px;
  padding: 32px 36px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  transition: background 0.25s ease;
  text-decoration: none;
  color: inherit;
}
.memo-card:last-child { border-bottom: none; }
.memo-card:hover { background: var(--bg-elevated); }
.memo-card-date {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  padding-top: 4px;
  white-space: nowrap;
}
.memo-card-body { min-width: 0; }
.memo-card-type {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.memo-card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 10px;
}
.memo-card-subtitle {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 10px;
}
.memo-card-excerpt {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.memo-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}
.memo-card-arrow {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-top: 4px;
  transition: transform 0.22s ease, color 0.22s ease;
  flex-shrink: 0;
}
.memo-card:hover .memo-card-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

@media (max-width: 880px) {
  .memo-card { grid-template-columns: 1fr auto; gap: 16px 24px; padding: 24px 28px; }
  .memo-card-date { grid-column: 1; grid-row: 1; }
  .memo-card-body { grid-column: 1; grid-row: 2; }
  .memo-card-arrow { grid-column: 2; grid-row: 1 / 3; align-self: center; }
}
@media (max-width: 600px) {
  .memo-card { grid-template-columns: 1fr; }
  .memo-card-arrow { display: none; }
}

/* ---- Contact ---- */
.contact-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}
.contact-link:hover {
  border-color: var(--border-gold);
  color: var(--text-primary);
  background: var(--accent-dim);
}
.contact-icon {
  font-size: 1rem;
  color: var(--accent);
  line-height: 1;
}

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 0.88rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.footer-copy {
  font-size: 0.68rem;
  color: var(--text-muted);
  max-width: 580px;
  text-align: right;
  line-height: 1.6;
}

/* ---- Card Visual Header ---- */
.card-visual {
  margin: -36px -36px 28px;
  height: 110px;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.card-visual-svg {
  width: 100%;
  height: 100%;
}
.card-visual--embassy {
  background: linear-gradient(160deg, #0e0c08 0%, #12100a 50%, #0a0c10 100%);
}
.card-visual--powergrid {
  background: linear-gradient(160deg, #080c12 0%, #0a0e18 50%, #080a10 100%);
}

/* ---- Responsive ---- */
@media (max-width: 880px) {
  :root { --section-pad: 88px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-credentials {
    border-left: none; padding-left: 0;
    border-top: 1px solid var(--border); padding-top: 40px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  }
  .credential-item { border-right: 1px solid var(--border); padding: 16px 24px 16px 0; }
  .credential-item:nth-child(even) { border-right: none; padding-left: 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-copy { text-align: left; max-width: 100%; }
}

@media (max-width: 600px) {
  :root { --section-pad: 64px; }
  .container, .nav-inner { padding-left: 24px; padding-right: 24px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu ul { padding: 28px 24px 32px; }
  .research-grid { grid-template-columns: 1fr; }
  #hero { padding-left: 24px; padding-right: 24px; padding-bottom: 64px; }
  .hero-title { font-size: clamp(2.6rem, 11vw, 3.8rem); }
  .about-credentials { grid-template-columns: 1fr; }
  .credential-item { border-right: none !important; padding-left: 0 !important; }
}