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

:root {
  --bg: #fbfbfd;
  --bg-dark: #000;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --text-inverse: #f5f5f7;
  --text-inverse-muted: #a1a1a6;
  --line: #d2d2d7;
  --line-dark: #1f1f1f;
  --accent: #0071e3;
  --card: #ffffff;
  --card-dark: #111113;
  --radius: 18px;
  --radius-lg: 28px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 17px;
  letter-spacing: -0.01em;
}

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

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: rgba(251, 251, 253, 0.8);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  max-width: 60vw;
  overflow: hidden;
  text-decoration: none;
}

.logo-title {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.logo-sub {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-dark .logo-title { color: var(--text-inverse); }
.nav-dark .logo-sub { color: var(--text-inverse-muted); }

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

/* ---------- Layout ---------- */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 140px 24px;
}

/* ---------- Typography ---------- */
.eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.eyebrow.center { text-align: center; }

.display {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}

h2.display { text-align: left; }

h3 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

h4 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.lead {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-muted);
  max-width: 680px;
  font-weight: 400;
}

.muted { color: var(--text-muted); }

/* ---------- Hero ---------- */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 160px 24px 120px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(36px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.04;
  margin-bottom: 28px;
  overflow-wrap: break-word;
  hyphens: auto;
}

.hero .lead {
  margin: 0 auto 40px;
}

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

.btn-primary, .btn-ghost {
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-block;
}

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

.btn-primary:hover { background: #0077ed; transform: translateY(-1px); }

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

.btn-ghost:hover { color: #0077ed; }

/* ---------- About ---------- */
.about { text-align: center; }

.about .display { text-align: center; max-width: 900px; margin: 0 auto 80px; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 80px;
  text-align: left;
  align-items: center;
  margin-bottom: 64px;
}

.portrait {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #ececee;
  aspect-ratio: 4 / 5;
  box-shadow: 0 24px 60px -20px rgba(0,0,0,0.18);
}

.portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.portrait:hover img { transform: scale(1.02); }

.about-text p {
  font-size: 19px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.55;
}

.about-text p strong { color: var(--text); font-weight: 600; }

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

@media (max-width: 700px) {
  .stats { grid-template-columns: 1fr; }
}

.stat {
  background: var(--card);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.stat-value {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

/* ---------- Project Section ---------- */
.project {
  border-radius: var(--radius-lg);
  margin: 24px;
  padding: 100px 60px;
  max-width: calc(1200px - 0px);
}

.project-dark {
  background: var(--bg-dark);
  color: var(--text-inverse);
}

.project-dark .lead,
.project-dark h4 {
  color: var(--text-inverse-muted);
}

.project-dark .eyebrow {
  color: var(--text-inverse-muted);
}

.project-header { margin-bottom: 60px; }

/* ---------- Project Stats ---------- */
.project-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 40px 0;
}

.project-dark .project-stats {
  border-color: var(--line-dark);
}

.project-stats > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.num {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.num-label {
  font-size: 14px;
  color: var(--text-muted);
}

.project-dark .num-label { color: var(--text-inverse-muted); }

/* ---------- Chart Card ---------- */
.chart-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 32px;
  margin-bottom: 40px;
}

.project-dark .chart-card {
  background: var(--card-dark);
  border-color: var(--line-dark);
}

.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.chart-toggle {
  display: inline-flex;
  background: rgba(0,0,0,0.05);
  padding: 4px;
  border-radius: 980px;
}

.project-dark .chart-toggle { background: rgba(255,255,255,0.08); }

.chart-toggle button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 980px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.chart-toggle button.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.project-dark .chart-toggle button.active {
  background: #2a2a2c;
  color: var(--text-inverse);
}

.chart-wrap {
  position: relative;
  height: 360px;
  width: 100%;
}

.chart-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 16px;
  text-align: center;
}

.project-dark .chart-note { color: var(--text-inverse-muted); }

/* ---------- Two-col Cards ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
}

.project-dark .card {
  background: var(--card-dark);
  border-color: var(--line-dark);
}

.card p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.project-dark .card p { color: var(--text-inverse-muted); }
.card p strong { color: var(--text); font-weight: 600; }
.project-dark .card p strong { color: var(--text-inverse); }

.updates {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.updates li {
  padding-left: 0;
  color: var(--text-muted);
  line-height: 1.5;
  border-left: 2px solid var(--line);
  padding: 4px 0 4px 20px;
}

.project-dark .updates li {
  color: var(--text-inverse-muted);
  border-left-color: var(--line-dark);
}

.updates .date {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.project-dark .updates .date { color: var(--text-inverse); }

/* ---------- Quote (About) ---------- */
.quote {
  max-width: 880px;
  margin: 0 auto 80px;
  text-align: center;
  padding: 0 24px;
}

.quote p {
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 20px;
}

.quote footer {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ---------- Project link wrapper ---------- */
.project-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.25s ease;
}

.project-link:hover { opacity: 0.92; }
.project-link:hover .arrow { transform: translateX(6px); }

.arrow {
  display: inline-block;
  font-weight: 400;
  margin-left: 8px;
  transition: transform 0.3s ease;
  color: var(--text-inverse-muted);
}

.project-dark .project-link h2 { color: var(--text-inverse); }

/* ---------- Project CTA ---------- */
.project-cta {
  margin-top: 40px;
  text-align: center;
}

.project-cta .btn-primary {
  background: #fff;
  color: #000;
}

.project-cta .btn-primary:hover { background: #e8e8ea; }

/* ---------- Coming Soon ---------- */
.project-coming-soon .project-header { margin-bottom: 0; }

.coming-soon-card {
  margin-top: 80px;
  padding: 80px 40px;
  text-align: center;
  border: 1px dashed var(--line-dark);
  border-radius: var(--radius-lg);
  background: var(--card-dark);
}

.coming-soon-card .badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 980px;
  background: rgba(255,255,255,0.08);
  color: var(--text-inverse-muted);
  margin-bottom: 24px;
}

.coming-soon-card h3 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-inverse);
  margin-bottom: 16px;
}

.coming-soon-card p {
  color: var(--text-inverse-muted);
  max-width: 560px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.55;
}

/* ---------- Closing ---------- */
.closing {
  text-align: center;
  padding: 160px 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.closing .display {
  text-align: center;
  margin-bottom: 16px;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 32px 24px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Bitcoin Detail Page ---------- */
body.page-dark {
  background: #000;
  color: var(--text-inverse);
}

.nav-dark {
  background: rgba(0,0,0,0.78);
  border-bottom: 1px solid var(--line-dark);
}

.nav-dark .nav-logo,
.nav-dark .nav-links a { color: var(--text-inverse); }
.nav-dark .nav-links a { color: var(--text-inverse-muted); }
.nav-dark .nav-links a:hover { color: var(--text-inverse); }

.detail-hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 24px 40px;
}

.detail-hero .eyebrow { color: var(--text-inverse-muted); }
.detail-hero .display { color: var(--text-inverse); margin-bottom: 16px; }
.detail-hero .lead { color: var(--text-inverse-muted); }

.detail-summary {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 60px;
}

.sum-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.sum-grid > div {
  background: var(--card-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sum-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
}

.sum-value {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--text-inverse);
}

.sum-value.gain { color: #34c759; }
.sum-value.loss { color: #ff453a; }

/* ---------- Positions Grid (Aktien Detail) ---------- */
.detail-positions {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px 40px;
}

.positions-head {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-inverse);
  margin-bottom: 20px;
}

.positions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.position-card {
  background: var(--card-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pos-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.pos-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-inverse);
}

.pos-ticker {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-inverse-muted);
  background: rgba(255,255,255,0.06);
  padding: 4px 8px;
  border-radius: 6px;
}

.pos-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--text-inverse);
}

.pos-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-inverse-muted);
}

.pos-return {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-top: 1px solid var(--line-dark);
  padding-top: 12px;
}

.pos-pct {
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.pos-eur {
  font-size: 12px;
  color: var(--text-inverse-muted);
  font-variant-numeric: tabular-nums;
}

.pos-up .pos-pct { color: #34c759; }
.pos-down .pos-pct { color: #ff453a; }

@media (max-width: 1000px) {
  .positions-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .positions-grid { grid-template-columns: 1fr; }
}

.purchase-table .ticker {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  background: rgba(255,255,255,0.06);
  padding: 3px 6px;
  border-radius: 5px;
}

.purchase-table .loss { color: #ff453a; }

.detail-table-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 24px 120px;
}

.table-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.table-head h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-inverse);
}

.table-head .muted { color: var(--text-inverse-muted); font-size: 14px; }
.table-head .muted strong { color: var(--text-inverse); font-weight: 600; }

.table-wrap {
  background: var(--card-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: auto;
  max-height: 70vh;
}

.purchase-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.purchase-table thead {
  position: sticky;
  top: 0;
  background: #0d0d0f;
  z-index: 1;
}

.purchase-table th {
  text-align: left;
  padding: 14px 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
  border-bottom: 1px solid var(--line-dark);
  white-space: nowrap;
}

.purchase-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-inverse);
  white-space: nowrap;
}

.purchase-table tr:hover td { background: rgba(255,255,255,0.03); }

.purchase-table .num-cell { text-align: right; }
.purchase-table .buy { color: #f7931a; }
.purchase-table .sell { color: var(--text-inverse-muted); }
.purchase-table .gain { color: #34c759; }

.footer-dark {
  border-top: 1px solid var(--line-dark);
  background: #000;
  color: var(--text-inverse-muted);
}

@media (max-width: 800px) {
  .sum-grid { grid-template-columns: repeat(2, 1fr); }
  .purchase-table { font-size: 12px; }
  .purchase-table th, .purchase-table td { padding: 10px 12px; }
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .two-col { grid-template-columns: 1fr; }
  .project-stats { grid-template-columns: 1fr; gap: 16px; padding: 24px 0; }
  .project { padding: 60px 24px; margin: 12px; }
  .section { padding: 80px 24px; }
  .hero { padding: 100px 24px 80px; }
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 13px; }
  .chart-wrap { height: 280px; }
}

@media (max-width: 540px) {
  .nav-links { display: none; }
  .stat { padding: 24px; }
  .stat-value { font-size: 32px; }
  .card { padding: 24px; }
  .chart-card { padding: 20px; }
}