/*
  Enhancements layer — loaded after styles.css, so the original design is untouched.
  Delete this file and enhancements.js (plus the two tags in index.html) to roll everything back.
  Contents: dark theme, scroll-progress bar, section "journey" rail with walker,
  cursor glow, card tilt and magnetic buttons (pointer devices only).
*/

/* ---------- Dark theme (smart invert) ----------
   The original stylesheet hard-codes its colours, so the whole page is inverted
   and media is inverted back. Hue-rotate keeps the blue/pastel accents recognisable. */
html[data-theme="dark"] {
  filter: invert(1) hue-rotate(180deg);
  background: #fff;
  color-scheme: dark;
}
html[data-theme="dark"] :is(img, video, iframe, canvas, picture, svg image, [data-keep-colors]) {
  filter: invert(1) hue-rotate(180deg) !important;
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 14px;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line, rgba(30, 32, 37, 0.23));
  border-radius: 999px;
  background: #fff;
  color: #202124;
  font: inherit;
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, box-shadow 0.2s;
}
/* The header is full below ~1280px, so the toggle floats above the quick dock instead. */
@media (max-width: 1279px) {
  .theme-toggle {
    top: auto;
    bottom: 92px;
    box-shadow: 0 6px 18px rgba(30, 32, 37, 0.18);
  }
}
.theme-toggle:hover { border-color: #405dea; box-shadow: 0 0 0 4px rgba(64, 93, 234, 0.14); }
.theme-toggle:focus-visible { outline: 3px solid #405dea; outline-offset: 2px; }
.theme-toggle span { display: block; transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1); }
.theme-toggle:active span { transform: rotate(40deg) scale(0.9); }

/* ---------- Scroll progress bar ---------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  height: 3px;
  background: linear-gradient(90deg, #405dea, #8f7bff);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

/* ---------- Cursor glow (pointer devices) ---------- */
.cursor-glow {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 40%), rgba(64, 93, 234, 0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}
.cursor-glow.is-on { opacity: 1; }

/* ---------- Journey rail ---------- */
.journey {
  position: fixed;
  top: 122px;
  right: 22px;
  bottom: 110px;
  z-index: 15;
  display: none;
  width: 56px;
  pointer-events: none;
}
@media (min-width: 1360px) and (min-height: 560px) {
  .journey { display: block; }
}
.journey-hud {
  position: absolute;
  bottom: -62px;
  right: 0;
  font: 600 0.68rem/1 var(--mono, ui-monospace, monospace);
  letter-spacing: 0.08em;
  color: #4b515c;
  white-space: nowrap;
}
.journey-hud b { color: #405dea; font-weight: 700; }
.journey-track {
  position: absolute;
  top: 0;
  right: 27px;
  bottom: 0;
  width: 2px;
  border-radius: 2px;
  background: rgba(30, 32, 37, 0.16);
}
.journey-fill {
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  border-radius: 2px;
  background: #405dea;
  transform: scaleY(0);
  transform-origin: top center;
}
.journey-stop {
  position: absolute;
  right: -7px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 0;
  height: 16px;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  pointer-events: auto;
  transform: translateY(-50%);
}
.journey-stop i {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(30, 32, 37, 0.35);
  border-radius: 50%;
  background: #fbfbf8;
  transition: background-color 0.25s, border-color 0.25s, transform 0.25s;
}
.journey-stop.is-on i { border-color: #405dea; background: #405dea; }
.journey-stop.is-current i { transform: scale(1.25); box-shadow: 0 0 0 5px rgba(64, 93, 234, 0.18); }
.journey-stop span {
  position: absolute;
  right: 26px;
  padding: 0.28rem 0.6rem;
  border: 1px solid rgba(30, 32, 37, 0.85);
  border-radius: 0.55rem;
  background: #202124;
  color: #fff;
  font: 600 0.72rem/1 var(--sans, Inter, system-ui, sans-serif);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity 0.18s, transform 0.18s;
  pointer-events: none;
}
.journey-stop:hover span,
.journey-stop:focus-visible span { opacity: 1; transform: none; }
.journey-stop:focus-visible i { outline: 3px solid #405dea; outline-offset: 3px; }

.journey-walker {
  position: absolute;
  right: 28px;
  top: 0;
  width: 26px;
  height: 42px;
  margin: -40px -13px 0 0;
  color: #202124;
  transform: translate3d(0, 0, 0);
  will-change: transform;
  pointer-events: none;
}
.journey-walker svg { display: block; width: 100%; height: 100%; overflow: visible; }
.journey-walker svg * { fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.journey-walker .head { fill: #fbfbf8; }
.journey-walker .leg-l,
.journey-walker .leg-r,
.journey-walker .arm-l,
.journey-walker .arm-r { transform-origin: 13px 24px; }
.journey-walker .arm-l,
.journey-walker .arm-r { transform-origin: 13px 14px; }
.journey.is-walking .leg-l { animation: journey-swing 0.5s ease-in-out infinite alternate; }
.journey.is-walking .leg-r { animation: journey-swing 0.5s ease-in-out infinite alternate-reverse; }
.journey.is-walking .arm-l { animation: journey-swing 0.5s ease-in-out infinite alternate-reverse; }
.journey.is-walking .arm-r { animation: journey-swing 0.5s ease-in-out infinite alternate; }
.journey.is-walking .journey-walker { animation: journey-bob 0.25s ease-in-out infinite alternate; }
@keyframes journey-swing { from { transform: rotate(-26deg); } to { transform: rotate(26deg); } }
@keyframes journey-bob { from { margin-top: -40px; } to { margin-top: -42px; } }

.journey-flag {
  position: absolute;
  right: 20px;
  bottom: -30px;
  font-size: 1rem;
  line-height: 1;
  opacity: 0.55;
  transition: opacity 0.3s, transform 0.3s;
  transform-origin: bottom left;
}
.journey.is-done .journey-flag { opacity: 1; transform: scale(1.25) rotate(-8deg); }

/* ---------- Top progress line: minimal, matches the dot rail ---------- */
.scroll-progress { height: 2px; background: #202124; opacity: 0.7; }

/* ---------- Journey rail v2: minimal dot navigation ----------
   The explore chip (explore.js) already shows progress, so the rail is now a quiet section index:
   small grey dots, the current section as a dark pill, labels on hover. Faded until you scroll or hover. */
.journey { width: 40px; opacity: 0.4; transition: opacity 0.4s ease 0.8s; }
.journey:hover, .journey:focus-within, .journey.is-walking { opacity: 1; transition-delay: 0s; }
.journey-hud, .journey-walker, .journey-flag, .journey-fill { display: none !important; }
.journey-track { right: 19px; width: 1px; background: rgba(30, 32, 37, 0.08); }
.journey-stop { right: -8px; width: 18px; height: 22px; justify-content: center; }
.journey-stop i {
  width: 6px;
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: rgba(30, 32, 37, 0.22);
  transition: height 0.3s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.25s;
}
.journey-stop.is-on i { background: rgba(30, 32, 37, 0.45); }
.journey-stop.is-current i { height: 18px; background: #202124; transform: none; box-shadow: none; }
.journey-stop:hover i { background: #202124; }
.journey-stop span { right: 24px; }
@media (prefers-reduced-motion: reduce) { .journey, .journey-stop i { transition: none; } }

/* ---------- Pointer polish: tilt + magnetic ---------- */
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .featured-project.is-tilting,
  .build-card.is-tilting { will-change: transform; transition-property: transform, box-shadow, background-color, border-color; transition-duration: 0.12s, 0.25s, 0.25s, 0.25s; }
  :is(.header-cta, .profile-download, .contact-submit, .location-link, .rail-section-button).is-magnetic { transition: transform 0.15s ease-out; }
}

@media print { .journey, .scroll-progress, .cursor-glow, .theme-toggle { display: none !important; } }
@media (prefers-reduced-motion: reduce) {
  .journey *, .journey-walker, .theme-toggle span, .journey-stop i, .journey-stop span { animation: none !important; transition: none !important; }
  .cursor-glow { display: none; }
}