/* ============================================================
   AvenInvest AI — Design System
   Palette: Indigo / Teal / Orange on white, glass cards
   Type: Outfit (display) · Poppins (UI) · Inter (body/data)
   ============================================================ */

:root {
  /* Color */
  --indigo: #4F46E5;
  --indigo-dark: #372FA6;
  --indigo-tint: #EEEDFD;
  --teal: #0D9488;
  --teal-tint: #E1F5F2;
  --orange: #F97316;
  --orange-tint: #FFEEE0;
  --bg: #FFFFFF;
  --card: #F7F8FC;
  --card-strong: #F1F1FB;
  --ink: #1E1B2E;
  --muted: #6B7280;
  --hairline: rgba(30, 27, 46, 0.08);
  --success: #16A34A;
  --loss: #DC2626;
  --glass-border: rgba(79, 70, 229, 0.14);
  --glass-shadow: 0 8px 30px rgba(30, 27, 46, 0.08);

  /* Type */
  --font-display: 'Outfit', sans-serif;
  --font-ui: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Layout */
  --maxw: 1200px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0 0 0.5em 0;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--indigo);
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Buttons ---------- */

.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 26px;
  border-radius: 999px;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--indigo), #6D63EC);
  color: #fff;
  box-shadow: 0 10px 24px rgba(79, 70, 229, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(79, 70, 229, 0.36); }

.btn-outline {
  background: transparent;
  color: var(--indigo);
  border: 1.5px solid var(--indigo);
}
.btn-outline:hover { background: var(--indigo-tint); transform: translateY(-2px); }

.btn-accent {
  background: linear-gradient(135deg, var(--orange), #FB8F42);
  color: #fff;
  box-shadow: 0 10px 24px rgba(249, 115, 22, 0.28);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(249, 115, 22, 0.36); }

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  transform: scale(0);
  animation: ripple 600ms ease-out;
  pointer-events: none;
}
@keyframes ripple {
  to { transform: scale(3.5); opacity: 0; }
}

/* ---------- Glass card ---------- */

.glass {
  background: rgba(247, 248, 252, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

.card-lift {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(30, 27, 46, 0.12);
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo .mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--indigo), var(--teal));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem; font-weight: 700;
}
.logo .sub {
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 0.7rem;
  color: var(--muted);
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 500;
}
.nav-links a { color: var(--ink); opacity: 0.8; transition: opacity 0.2s ease, color 0.2s ease; }
.nav-links a:hover { opacity: 1; color: var(--indigo); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--ink);
  margin: 5px 0;
  transition: 0.25s ease;
}

/* ---------- Hero ---------- */

.hero {
  padding: 72px 0 40px;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 700;
}
.hero h1 .accent { color: var(--indigo); }
.hero h1 .accent-teal { color: var(--teal); }

.hero p.lede {
  font-family: var(--font-body);
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 46ch;
  margin: 18px 0 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 12px;
}

.hero-disclaimer {
  font-size: 0.78rem;
  color: var(--muted);
  max-width: 48ch;
}

/* Signature: capital-curve chart card */
.curve-card {
  padding: 26px 26px 20px;
  position: relative;
}
.curve-card .curve-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}
.curve-card .curve-title {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.92rem;
}
.curve-card .curve-tag {
  font-family: var(--font-body);
  font-size: 0.76rem;
  color: var(--muted);
}
.curve-svg-wrap { width: 100%; }
.curve-path {
  fill: none;
  stroke: url(#curveGradient);
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: draw 2.2s cubic-bezier(0.65, 0, 0.35, 1) forwards 0.3s;
}
@keyframes draw { to { stroke-dashoffset: 0; } }

.curve-dot {
  opacity: 0;
  animation: fadeInDot 0.6s ease forwards 2.3s;
}
@keyframes fadeInDot { to { opacity: 1; } }

.curve-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--hairline);
  font-family: var(--font-ui);
}
.curve-stat .num {
  font-weight: 700;
  font-size: 1.05rem;
}
.curve-stat .num.pos { color: var(--success); }
.curve-stat .label {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Ledger stat strip (signature structural device) ---------- */

.ledger {
  margin-top: 48px;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 26px 0;
}
.ledger-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}
.ledger-item {
  position: relative;
  text-align: center;
  padding: 0 10px;
}
.ledger-item::before {
  content: '';
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--hairline) 0 4px, transparent 4px 8px);
}
.ledger-item:first-child::before { display: none; }
.ledger-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  color: var(--ink);
}
.ledger-label {
  font-family: var(--font-ui);
  font-size: 0.76rem;
  color: var(--muted);
  margin-top: 4px;
}

/* ---------- Section shell ---------- */

section.section { padding: 88px 0; }
.section-head { max-width: 640px; margin-bottom: 46px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin-top: 10px; }
.section-head p { color: var(--muted); font-size: 1.02rem; }

.bg-tint { background: var(--card); }

/* ---------- Grids ---------- */

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.pill-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--hairline);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.pill:hover { background: var(--indigo-tint); border-color: var(--glass-border); transform: translateY(-2px); }

.topic-card {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
}
.topic-card .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.topic-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.topic-card p { color: var(--muted); font-size: 0.92rem; margin: 0; }

.icon-indigo { background: var(--indigo-tint); color: var(--indigo); }
.icon-teal { background: var(--teal-tint); color: var(--teal); }
.icon-orange { background: var(--orange-tint); color: var(--orange); }

/* ---------- Backtest preview panel ---------- */

.backtest-panel {
  padding: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.backtest-metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.metric {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 18px;
}
.metric .val { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; }
.metric .val.pos { color: var(--success); }
.metric .lbl { font-size: 0.78rem; color: var(--muted); margin-top: 2px; }

.disclaimer-box {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 18px;
}

/* ---------- Waitlist ---------- */

.waitlist-panel {
  padding: 44px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
}
.waitlist-copy h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
.waitlist-copy p { color: var(--muted); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.field input, .field select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--hairline);
  background: #fff;
  transition: border-color 0.2s ease;
}
.field input:focus, .field select:focus {
  border-color: var(--indigo);
  outline: none;
}
#waitlistMsg { margin-top: 14px; font-family: var(--font-ui); font-size: 0.9rem; }
#waitlistMsg.ok { color: var(--success); }
#waitlistMsg.err { color: var(--loss); }

/* ---------- Contact reveal ---------- */

.contact-reveal { text-align: center; padding: 60px 0; }
#revealedEmail {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--indigo);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
#revealedEmail.show { opacity: 1; transform: translateY(0); }

/* ---------- Footer ---------- */

footer {
  background: var(--ink);
  color: #fff;
  padding: 56px 0 26px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
.footer-grid h4 {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.footer-grid a, .footer-grid p {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.82);
  margin-bottom: 10px;
}
.footer-grid a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
}

/* ---------- Counter animation utility ---------- */
.count-init { opacity: 0.001; }

/* ============================================================
   Backtesting dashboard
   ============================================================ */

.bt-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 16px;
  padding: 22px;
  margin-bottom: 32px;
}
.bt-controls .field { min-width: 150px; }
.bt-controls .field label {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  display: block;
  margin-bottom: 6px;
}
.bt-controls select, .bt-controls input[type="date"] {
  font-family: var(--font-body);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--hairline);
  background: #fff;
  font-size: 0.92rem;
}
.bt-controls .spacer { flex: 1; }

.bt-dashboard {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}
.bt-metric {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
}
.bt-metric .val {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
}
.bt-metric .val.pos { color: var(--success); }
.bt-metric .val.neg { color: var(--loss); }
.bt-metric .lbl {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.bt-charts {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 20px;
  margin-bottom: 40px;
}
.chart-card {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 22px;
}
.chart-card h3 {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  margin-bottom: 14px;
}
.chart-card canvas { max-height: 260px; }

.bt-table-wrap {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 8px 20px 20px;
  overflow-x: auto;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 600;
}
.badge-win { background: rgba(22,163,74,0.12); color: var(--success); }
.badge-loss { background: rgba(220,38,38,0.12); color: var(--loss); }
.badge-avoided { background: rgba(107,114,128,0.14); color: var(--muted); }

.pnl-pos { color: var(--success); font-weight: 600; }
.pnl-neg { color: var(--loss); font-weight: 600; }

table.dataTable {
  font-family: var(--font-body);
  font-size: 0.9rem;
  width: 100% !important;
}
table.dataTable thead th {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-bottom: 2px solid var(--hairline) !important;
}
table.dataTable tbody td { padding: 10px 12px; }
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--hairline);
  padding: 6px 10px;
  font-family: var(--font-body);
}
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background: var(--indigo) !important;
  color: #fff !important;
  border-radius: 8px;
  border: none !important;
}

/* ============================================================
   Calculators page
   ============================================================ */

.calc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.calc-tab {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--hairline);
  background: #fff;
  color: var(--muted);
  transition: all 0.2s ease;
}
.calc-tab.active {
  background: var(--indigo);
  border-color: var(--indigo);
  color: #fff;
}

.calc-panel { display: none; }
.calc-panel.active { display: block; }

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.calc-inputs {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 28px;
}
.calc-results {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 28px;
}

.slider-field { margin-bottom: 26px; }
.slider-field .row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}
.slider-field label {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.9rem;
}
.slider-field .value {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--indigo);
}
.slider-field input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: var(--indigo-tint);
  appearance: none;
  -webkit-appearance: none;
}
.slider-field input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--indigo);
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(79,70,229,0.4);
  cursor: pointer;
}
.slider-field input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--indigo);
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(79,70,229,0.4);
  cursor: pointer;
  border: none;
}

.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px dashed var(--hairline);
}
.calc-result-row:last-of-type { border-bottom: none; }
.calc-result-row .lbl { font-family: var(--font-ui); font-size: 0.9rem; color: var(--muted); }
.calc-result-row .val { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.calc-result-row .val.hero { font-size: 1.5rem; color: var(--indigo); }

.calc-formula {
  margin-top: 20px;
  padding: 14px 16px;
  background: #fff;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--muted);
}
.calc-formula code {
  font-family: 'Courier New', monospace;
  background: var(--indigo-tint);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--indigo);
}

.calc-chart-wrap { margin-top: 22px; }

/* ---------- Responsive ---------- */

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .ledger-row { grid-template-columns: repeat(3, 1fr); row-gap: 22px; }
  .ledger-item:nth-child(4)::before { display: none; }
  .backtest-panel, .waitlist-panel { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .bt-dashboard { grid-template-columns: repeat(3, 1fr); }
  .bt-charts { grid-template-columns: 1fr; }
  .calc-layout { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .bt-dashboard { grid-template-columns: repeat(2, 1fr); }
  .bt-controls { flex-direction: column; align-items: stretch; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 28px 26px;
    border-bottom: 1px solid var(--hairline);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .ledger-row { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}