/* ==========================================================================
   The Tony Hawk Paradox - launch site
   Palette matched to the book cover: deep navy space, electric blue accents.
   ========================================================================== */

:root {
  --bg: #04060d;
  --navy: #0a1226;
  --blue: #1a6dff;
  --blue-bright: #2b8cff;
  --blue-dim: rgba(43, 140, 255, 0.28);
  --ink: #f2f6ff;
  --dim: #8ea6cf;
  --panel-bg: rgba(7, 12, 26, 0.72);
  --display: 'Michroma', sans-serif;
  --body: 'Saira', sans-serif;
}

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

html { scroll-behavior: auto; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-weight: 300;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- fixed 3D stage ---------- */

/* ---------- skyline background ----------
   Sits behind the transparent WebGL canvas. Fixed so it parallaxes against
   the scrolling content. EDIT: swap assets/skyline.jpg to change the art. */

#skyline {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: url('assets/skyline.jpg') center bottom / cover no-repeat;
  background-color: var(--bg);
  will-change: transform;   /* animated on scroll: see main.js parallax */
}

/* Scrim: darkens the sky at the top and the buildings behind the text column
   so the skater and the chapter panels stay readable over the art. */
#skyline::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4,6,13,0.55) 0%, rgba(4,6,13,0.15) 35%, rgba(4,6,13,0.0) 55%),
    linear-gradient(90deg, rgba(4,6,13,0.85) 0%, rgba(4,6,13,0.5) 32%, rgba(4,6,13,0.0) 58%);
}

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
  background: transparent;   /* skyline shows through */
}

/* Static fallback when WebGL is not available */
#webgl-fallback {
  display: none;   /* the skyline background covers this case now */
}
.no-webgl #stage { display: none; }
.no-webgl #webgl-fallback { display: block; }
.no-webgl .hero {
  background: url('assets/cover.png') center / cover no-repeat;
}
.no-webgl .hero::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(4,6,13,0.2), rgba(4,6,13,0.92));
}
.no-webgl .hero-lockup { position: relative; z-index: 1; }

/* ---------- landing flash ---------- */

#flash {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: radial-gradient(circle at 50% 70%, rgba(120, 180, 255, 0.9), rgba(26, 109, 255, 0.35) 45%, transparent 75%);
  opacity: 0;
  pointer-events: none;
}

/* ---------- HUD spin counter ---------- */

#hud {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 30;
  text-align: right;
  font-family: var(--display);
  pointer-events: none;
  user-select: none;
}
.hud-label {
  font-size: 9px;
  letter-spacing: 0.35em;
  color: var(--dim);
}
.hud-deg {
  font-size: 20px;
  color: var(--blue-bright);
  text-shadow: 0 0 12px rgba(43, 140, 255, 0.6);
  font-variant-numeric: tabular-nums;
}
.hud-meter {
  margin-top: 6px;
  margin-left: auto;
  width: 72px;
  height: 3px;
  background: rgba(43, 140, 255, 0.15);
  border-radius: 2px;
  overflow: hidden;
}
#hud-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--blue-bright));
  box-shadow: 0 0 8px rgba(43, 140, 255, 0.8);
}
.hud-milestone {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--ink);
  opacity: 0;
  transition: opacity 0.3s;
}
.hud-milestone.show { opacity: 1; }

/* ---------- content column ---------- */

#content {
  position: relative;
  z-index: 10;
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 0 8vw;
}

.hero-lockup { max-width: 620px; }

.hero-the {
  font-family: var(--display);
  font-size: clamp(14px, 1.6vw, 20px);
  letter-spacing: 0.6em;
  color: var(--ink);
  padding-left: 4px;
}
.hero-title {
  font-family: var(--display);
  font-size: clamp(52px, 9vw, 120px);
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-shadow: 0 0 40px rgba(26, 109, 255, 0.25);
  margin: 8px 0;
}
.hero-paradox {
  font-family: var(--display);
  font-size: clamp(20px, 3.4vw, 44px);
  color: var(--blue-bright);
  text-shadow: 0 0 24px rgba(43, 140, 255, 0.55);
  letter-spacing: 0.18em;
}
.hero-sub {
  margin-top: 20px;
  font-family: var(--display);
  font-size: clamp(10px, 1.2vw, 14px);
  letter-spacing: 0.3em;
  color: var(--dim);
}
.hero-byline {
  margin-top: 10px;
  font-family: var(--display);
  font-size: clamp(10px, 1.1vw, 13px);
  letter-spacing: 0.3em;
  color: var(--blue-bright);
}

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 8vw;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--display);
  font-size: 9px;
  letter-spacing: 0.4em;
  color: var(--dim);
}
.scroll-hint-line {
  display: block;
  width: 1px;
  height: 44px;
  background: linear-gradient(180deg, var(--blue-bright), transparent);
  animation: hint-drop 2.2s ease-in-out infinite;
}
@keyframes hint-drop {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- part dividers ---------- */

.part-divider {
  padding: 14vh 8vw 4vh;
  display: flex;
  align-items: baseline;
  gap: 18px;
  max-width: 760px;
}
.part-divider span {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.35em;
  color: var(--blue-bright);
  white-space: nowrap;
}
.part-divider em {
  font-style: normal;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--dim);
  border-bottom: 1px solid var(--blue-dim);
  padding-bottom: 6px;
  flex: 1;
}

/* ---------- chapter panels ---------- */

.chapter {
  min-height: 78vh;
  display: flex;
  align-items: center;
  padding: 6vh 8vw;
}

.panel {
  position: relative;
  width: min(560px, 100%);
  padding: 30px 32px 34px;
  background: var(--panel-bg);
  border: 1px solid var(--blue-dim);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

/* corner ticks, a quiet nod to game UI framing */
.panel::before,
.panel::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--blue-bright);
  border-style: solid;
}
.panel::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.panel::after  { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

.panel-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 18px;
}

.level {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.35em;
  color: var(--blue-bright);
  border: 1px solid var(--blue-dim);
  padding: 6px 10px 5px 13px;
  text-shadow: 0 0 10px rgba(43, 140, 255, 0.5);
}

.icon svg, .icon img {
  width: 52px;
  height: 52px;
  display: block;
}
.icon svg {
  stroke: var(--blue-bright);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 6px rgba(43, 140, 255, 0.55));
}

.panel h2 {
  font-family: var(--display);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.35;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-bottom: 12px;
}

.teaser {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--dim);
  max-width: 44ch;
}

.panel-epilogue { border-style: dashed; }

/* assembly particles injected by JS during the render-in effect */
.assembly-dot {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--blue-bright);
  box-shadow: 0 0 6px rgba(43, 140, 255, 0.9);
  pointer-events: none;
}

/* ---------- landing + signup ---------- */

.landing {
  min-height: 150vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding: 0 6vw 5vh;
}

.signup {
  width: min(520px, 100%);
  text-align: center;
  padding: 38px 34px 34px;
  background: linear-gradient(180deg, rgba(10, 18, 40, 0.9), rgba(6, 10, 24, 0.95));
  border: 1px solid rgba(43, 140, 255, 0.45);
  box-shadow:
    0 0 40px rgba(26, 109, 255, 0.25),
    0 0 120px rgba(26, 109, 255, 0.12),
    inset 0 1px 0 rgba(43, 140, 255, 0.35);
  /* hidden below its spot until the landing triggers it */
  opacity: 0;
  transform: translateY(90px);
  visibility: hidden;
}
.signup.risen {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s ease 0.15s, transform 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s;
}

.signup-cover {
  display: block;
  width: 150px;
  height: auto;
  margin: 0 auto 22px;
  border: 1px solid rgba(43, 140, 255, 0.35);
  box-shadow: 0 0 30px rgba(26, 109, 255, 0.3);
}
.signup-eyebrow {
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.45em;
  color: var(--blue-bright);
  margin-bottom: 14px;
}
.signup h2 {
  font-family: var(--display);
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.signup-copy {
  font-size: 15px;
  color: var(--dim);
  line-height: 1.6;
  margin-bottom: 24px;
}

.hp { display: none !important; }

.form-row {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}
.form-row input {
  flex: 1;
  min-width: 0;
  padding: 13px 16px;
  background: rgba(4, 8, 20, 0.9);
  border: 1px solid var(--blue-dim);
  color: var(--ink);
  font-family: var(--body);
  font-size: 15px;
  outline: none;
}
.form-row input:focus-visible {
  border-color: var(--blue-bright);
  box-shadow: 0 0 0 2px rgba(43, 140, 255, 0.3);
}
.form-submit {
  width: 100%;
  padding: 13px 22px;
  background: linear-gradient(180deg, var(--blue-bright), var(--blue));
  border: none;
  color: #fff;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.14em;
  cursor: pointer;
  text-transform: uppercase;
  transition: box-shadow 0.2s, transform 0.15s;
}
.form-submit:hover { box-shadow: 0 0 24px rgba(43, 140, 255, 0.6); }
.form-submit:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
.form-submit:disabled { opacity: 0.6; cursor: wait; }

.form-msg {
  margin-top: 14px;
  font-size: 14px;
  min-height: 1.4em;
}
.form-msg.ok { color: #7ee7a8; }
.form-msg.err { color: #ff8f8f; }

.site-footer {
  margin-top: 60px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(142, 166, 207, 0.55);
}

/* ---------- keyboard focus, general ---------- */

a:focus-visible { outline: 2px solid var(--blue-bright); outline-offset: 2px; }

/* ---------- mobile ---------- */

@media (max-width: 768px) {
  #skyline {
    background-image: url('assets/skyline-mobile.jpg');
  }
  /* on mobile the panels are full width, so scrim the whole lower half */
  #skyline::after {
    background:
      linear-gradient(180deg, rgba(4,6,13,0.5) 0%, rgba(4,6,13,0.1) 30%, rgba(4,6,13,0.75) 100%);
  }
  #hud { top: 14px; right: 14px; }
  .hud-deg { font-size: 16px; }
  .hero { padding: 0 7vw; }
  .chapter { min-height: 64vh; padding: 5vh 6vw; }
  .panel { padding: 24px 22px 26px; }
  .part-divider { padding: 10vh 6vw 2vh; flex-direction: column; gap: 8px; }
  .form-row { flex-direction: column; }
  .landing { min-height: 120vh; }
}

/* ---------- reduced motion: clean static layout ---------- */

@media (prefers-reduced-motion: reduce) {
  .scroll-hint-line { animation: none; }
}
.reduced-motion .panel,
.reduced-motion .hero-lockup,
.reduced-motion .signup {
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
  filter: none !important;
}
.reduced-motion #hud { display: none; }
.no-webgl #hud { display: none; }
.no-webgl .scroll-hint { display: none; }
.reduced-motion .scroll-hint { display: none; }
.no-webgl .panel,
.no-webgl .signup {
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
  filter: none !important;
}

/* ==========================================================================
   Pull-quotes between chapters
   ========================================================================== */

.pull-quote {
  max-width: 760px;
  margin: 6vh auto 8vh;
  padding: 0 8vw;
  text-align: center;
}
.pull-quote p {
  font-family: var(--display);
  font-size: clamp(20px, 3vw, 32px);
  line-height: 1.4;
  color: var(--ink);
  text-shadow: 0 0 30px rgba(26, 109, 255, 0.25);
}
.pull-quote cite {
  display: block;
  margin-top: 20px;
  font-family: var(--body);
  font-style: normal;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-bright);
}
.pull-quote-final p {
  color: var(--blue-bright);
  text-shadow: 0 0 34px rgba(43, 140, 255, 0.4);
}

@media (max-width: 768px) {
  .pull-quote { margin: 4vh auto 6vh; padding: 0 6vw; }
}

/* ==========================================================================
   Footer + About-the-author panel
   ========================================================================== */

.site-footer {
  margin-top: 70px;
  width: min(1000px, 92vw);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 30px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--blue-dim);
}
.footer-about {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.footer-photo {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border: 1px solid rgba(43, 140, 255, 0.5);
  box-shadow: 0 0 18px rgba(26, 109, 255, 0.25);
  flex-shrink: 0;
}
.footer-name {
  font-family: var(--display);
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--ink);
}
.footer-role {
  margin-top: 8px;
  font-size: 14px;
  color: var(--dim);
  max-width: 40ch;
}
.bio-toggle {
  margin-top: 14px;
  background: none;
  border: 1px solid var(--blue-dim);
  color: var(--blue-bright);
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 9px 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.bio-toggle:hover { border-color: var(--blue-bright); background: rgba(26, 109, 255, 0.12); }
.footer-links-grid {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.footer-links-row {
  display: flex;
  gap: 22px;
}
.footer-links-row a {
  color: var(--dim);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  white-space: nowrap;
}
.footer-links-row a:hover { color: var(--blue-bright); }

/* small-to-large: the top row (site + brand links) sits smaller and quieter,
   the bottom row (social handles) reads larger, the more prominent call. */
.footer-links-row--small a { font-size: 13px; }
.footer-links-row--large a { font-size: 17px; font-family: var(--display); letter-spacing: 0.02em; }
.footer-copy {
  margin-top: 18px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(142, 166, 207, 0.5);
}

.bio-panel {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: none;
}
.bio-panel.open { display: block; }
.bio-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 4, 10, 0.8);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.bio-card {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(460px, 90vw);
  padding: 60px 40px 40px;
  overflow-y: auto;
  background: linear-gradient(180deg, rgba(10, 18, 40, 0.98), rgba(6, 10, 24, 0.99));
  border-left: 1px solid rgba(43, 140, 255, 0.45);
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
  animation: bio-slide 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes bio-slide {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}
.bio-eyebrow {
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--blue-bright);
  margin-bottom: 10px;
}
.bio-name {
  font-family: var(--display);
  font-size: 26px;
  color: var(--ink);
  margin-bottom: 20px;
}
.bio-card p:not(.bio-eyebrow) {
  font-size: 15px;
  line-height: 1.7;
  color: var(--dim);
  margin-bottom: 16px;
}
.faq-q {
  font-family: var(--display);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--blue-bright);
  margin: 22px 0 8px;
}
.faq-q:first-of-type { margin-top: 4px; }
.bio-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--blue-dim);
}
.bio-links a {
  color: var(--blue-bright);
  text-decoration: none;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}
.bio-links a:hover { color: var(--ink); }
.bio-close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: none;
  border: none;
  color: var(--dim);
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s;
}
.bio-close:hover { color: var(--ink); }

@media (max-width: 768px) {
  .footer-inner { flex-direction: column; }
  .footer-links-grid { align-items: flex-start; }
  .footer-links-row { flex-wrap: wrap; gap: 14px; }
}

/* reduced motion: no slide */
.reduced-motion .bio-card { animation: none; }