/* ============================================================
   THE INVESTING MIND — landing page
   Quiet, editorial, publisher-style. Warm paper, deep green
   type, the cover art carries the color. Gold appears only in
   small touches.
   ============================================================ */

:root {
  --paper: #f7f5ee;
  --paper-deep: #efece0;
  --card: #fcfbf5;
  --forest: #11301e;       /* deep green for headings */
  --ink: #25342a;          /* body text */
  --muted: rgba(37, 52, 42, 0.6);
  --green: #1d7a3e;        /* the one accent green */
  --gold: #e9c84a;
  --line: rgba(22, 44, 30, 0.14);

  --font-body: "Newsreader", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(29, 122, 62, 0.18); }

.container { max-width: 1060px; margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-weight: 500; color: var(--forest); }

h2 {
  font-size: clamp(2rem, 4vw, 2.9rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1.1rem;
}
.kicker-light { color: var(--green); }

em { font-style: italic; }

/* ---------------- buttons ---------------- */

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  padding: 15px 26px;
  border-radius: 3px;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.btn-gold {
  background: var(--forest);
  color: var(--paper);
}
.btn-gold:hover { background: #1d4730; }
.btn-gold:active { background: #0c2416; }

.btn-ghost {
  background: transparent;
  color: var(--forest);
  box-shadow: inset 0 0 0 1px var(--line);
}
.btn-ghost:hover { box-shadow: inset 0 0 0 1px rgba(22, 44, 30, 0.45); }

.btn-ghost-dark {
  background: transparent;
  color: var(--forest);
  box-shadow: inset 0 0 0 1px var(--line);
}
.btn-ghost-dark:hover { box-shadow: inset 0 0 0 1px rgba(22, 44, 30, 0.45); }

.btn-small { padding: 9px 16px; font-size: 0.74rem; }
.btn-big { padding: 18px 36px; font-size: 0.95rem; }

/* ---------------- header ---------------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 28px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--forest);
  text-decoration: none;
}

.site-nav { display: flex; gap: 26px; }
.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}
.site-nav a:hover { color: var(--green); }

/* ---------------- hero ---------------- */

.hero {
  padding: 170px 0 90px;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 64px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(3rem, 6.5vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: clamp(1.1rem, 1.5vw, 1.25rem);
  font-weight: 300;
  color: var(--ink);
  max-width: 32em;
  margin-bottom: 2.2rem;
}
.hero-sub em { color: var(--green); }

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 1.4rem; }

.hero-note {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.hero-cover { justify-self: center; }
.hero-cover img {
  width: min(310px, 66vw);
  height: auto;
  display: block;
  border-radius: 3px;
  box-shadow:
    0 20px 44px rgba(22, 44, 30, 0.22),
    0 4px 14px rgba(22, 44, 30, 0.14);
}

/* page-load reveal */
.reveal { opacity: 0; transform: translateY(14px); animation: rise 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards; }
.r1 { animation-delay: 0.05s; }
.r2 { animation-delay: 0.14s; }
.r3 { animation-delay: 0.24s; }
.r4 { animation-delay: 0.34s; }
.r5 { animation-delay: 0.44s; }
.r6 { animation-delay: 0.54s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------------- book ---------------- */

.book { padding: 96px 0 90px; }

.book-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  margin-bottom: 72px;
}

.accent-underline {
  background-image: linear-gradient(transparent 78%, rgba(233, 200, 74, 0.55) 78%, rgba(233, 200, 74, 0.55) 96%, transparent 96%);
}

.lede {
  font-size: 1.32rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--forest);
}

.book-body p + p, .author-body p + p { margin-top: 1.2rem; }
.book-body em, .author-body em { color: var(--green); }

.learn-kicker { margin-bottom: 0.9rem; }

.learn-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(22, 44, 30, 0.35);
}

.learn-item {
  padding: 26px 24px 34px 0;
  border-right: 1px solid var(--line);
}
.learn-item:last-child { border-right: none; }
.learn-item + .learn-item { padding-left: 24px; }

.learn-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.1em;
}

.learn-item h3 {
  font-size: 1.18rem;
  font-weight: 600;
  margin: 12px 0 8px;
  line-height: 1.25;
}

.learn-item p { font-size: 0.96rem; line-height: 1.55; color: var(--muted); }

/* ---------------- snowball section ---------------- */

.snowball {
  padding: 96px 0 110px;
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.snowball-head { text-align: center; max-width: 780px; }
.snowball h2 { margin-bottom: 1.8rem; }

.snow-quote { margin: 0 auto 1.6rem; max-width: 34em; }
.snow-quote p {
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  font-style: italic;
  font-weight: 300;
  color: var(--forest);
  line-height: 1.45;
}
.snow-quote cite {
  display: block;
  margin-top: 0.8rem;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.snowball-explain { color: var(--muted); max-width: 36em; margin: 0 auto; }

.sim-shell {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 20px;
  margin-top: 52px;
  align-items: stretch;
}

/* controls */
.sim-controls {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 19px;
}

.control-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}
.control-label label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--forest);
}
.control-hint {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.control output {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--green);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(to right, var(--green) var(--fill, 50%), rgba(22, 44, 30, 0.16) var(--fill, 50%));
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--green);
  box-shadow: 0 1px 4px rgba(22, 44, 30, 0.25);
  transition: transform 0.12s ease;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.12); }
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--green);
  box-shadow: 0 1px 4px rgba(22, 44, 30, 0.25);
}
input[type="range"]:disabled { opacity: 0.4; cursor: not-allowed; }

.sim-projection {
  border-top: 1px solid var(--line);
  padding-top: 15px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sim-projection span {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.sim-projection strong {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--forest);
}

.btn-roll { width: 100%; text-align: center; }
.btn-roll[data-state="rolling"] { background: transparent; color: var(--forest); box-shadow: inset 0 0 0 1px var(--line); }

/* stage */
.sim-stage {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #e3e9d9;
  min-height: 460px;
}

#snow-canvas { display: block; width: 100%; height: 100%; position: absolute; inset: 0; }

.sim-hud {
  position: absolute;
  top: 14px; left: 14px; right: 14px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.hud-box {
  background: rgba(252, 251, 245, 0.82);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 14px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.hud-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.hud-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--forest);
  font-variant-numeric: tabular-nums;
}
.hud-money .hud-value { color: var(--green); }

.sim-tip {
  position: absolute;
  bottom: 12px; left: 0; right: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(37, 52, 42, 0.5);
  pointer-events: none;
  transition: opacity 0.4s ease;
}

/* summary card */
.sim-summary {
  position: absolute;
  inset: 0;
  margin: auto;
  width: min(430px, calc(100% - 48px));
  height: fit-content;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 10px;
  padding: 32px 34px 28px;
  text-align: center;
  box-shadow: 0 22px 60px rgba(22, 44, 30, 0.25);
  animation: summary-pop 0.5s cubic-bezier(0.22, 1.2, 0.36, 1) both;
}
@keyframes summary-pop {
  from { opacity: 0; transform: scale(0.92) translateY(18px); }
  to { opacity: 1; transform: none; }
}

.summary-kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 6px;
}

.summary-value {
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 500;
  color: var(--forest);
  line-height: 1.05;
}

.summary-line { font-size: 1rem; margin: 8px 0 18px; color: var(--muted); }

.summary-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 13px 0;
  margin-bottom: 14px;
}
.summary-stats .stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 3px;
}
.summary-stats .stat-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--forest);
}
.stat-value.stat-up { color: var(--green); }
.stat-value.stat-down { color: #a8553f; }

.summary-compare {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--muted);
  margin-bottom: 18px;
}

/* ---------------- author ---------------- */

.author { padding: 96px 0; }

.author-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 56px;
}

/* ---------------- footer ---------------- */

.footer {
  background: var(--forest);
  padding: 96px 0 56px;
  text-align: center;
}

.footer-title {
  color: var(--paper);
  font-weight: 500;
  margin-bottom: 2.2rem;
  font-size: clamp(2.1rem, 4.5vw, 3.2rem);
  line-height: 1.12;
}

.footer .btn-big {
  background: var(--paper);
  color: var(--forest);
}
.footer .btn-big:hover { background: #ffffff; }

.footer-meta {
  margin-top: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: rgba(247, 245, 238, 0.55);
}

.footer-fine {
  margin-top: 3.2rem;
  font-size: 0.9rem;
  color: rgba(247, 245, 238, 0.4);
}

/* ---------------- responsive ---------------- */

@media (max-width: 980px) {
  .site-nav { display: none; }
  .hero { padding-top: 130px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; text-align: center; }
  .hero-cover { order: -1; }
  .hero-cover img { width: min(220px, 54vw); }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-ctas { justify-content: center; }
  .book-grid, .author-grid { grid-template-columns: 1fr; gap: 28px; }
  .learn-grid { grid-template-columns: 1fr 1fr; }
  .learn-item { border-right: none; border-bottom: 1px solid var(--line); padding-left: 0 !important; }
  .sim-shell { grid-template-columns: 1fr; }
  .sim-controls { order: 2; }
  .sim-stage { order: 1; min-height: 380px; }
}

@media (max-width: 560px) {
  .learn-grid { grid-template-columns: 1fr; }
  .summary-stats { grid-template-columns: 1fr 1fr; }
  .hud-value { font-size: 0.95rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { animation: none; opacity: 1; transform: none; }
}