/* film.css — the explainer film: the page's centrepiece.
   The frame is strung: its top edge is the brand's string (plucked when the film plays, js/film.js),
   a glint travels the border like the glow in the intro, and the scrubber is a node on a string. */

@property --film-glint { syntax: "<angle>"; inherits: false; initial-value: 0deg; }

.film { position: relative; padding-bottom: clamp(16px, 3vw, 40px); }

.film-frame {
  --bezel: clamp(6px, 1vw, 12px);
  --r-outer: clamp(16px, 2.2vw, 28px);
  --r-inner: calc(var(--r-outer) - var(--bezel) + 2px);
  position: relative; margin: 0 auto; max-width: 1180px;
}

/* ----- The string across the top edge ----- */
.film-frame__string {
  position: absolute; z-index: 3; left: -3.5%; width: 107%; top: -12px; height: 24px; overflow: visible; pointer-events: none;
}
.film-frame__string path { fill: none; stroke: url(#film-string-gradient); stroke-width: 1.5; vector-effect: non-scaling-stroke; stroke-linecap: round; }
.film-frame__string .film-frame__string-glow { stroke-width: 6; opacity: 0; filter: blur(3px); transition: opacity 600ms var(--ease); }
.film-frame.is-playing .film-frame__string .film-frame__string-glow { opacity: 0.55; }
.film-frame__node {
  position: absolute; z-index: 4; left: 58%; top: 0; width: 9px; height: 9px; margin: -4.5px 0 0 -4.5px; border-radius: 50%;
  background: var(--in-tune); box-shadow: 0 0 9px rgb(61 220 132 / 0.95); pointer-events: none;
  transform: translateY(var(--node-y, 0px));
}
.film-frame__pin {
  position: absolute; z-index: 4; top: 0; width: 7px; height: 7px; margin: -3.5px 0 0 -3.5px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #f3d9b0, #8a5a2b 70%); box-shadow: 0 1px 2px rgb(0 0 0 / 0.8); pointer-events: none;
}
.film-frame__pin--l { left: -3.5%; }
.film-frame__pin--r { left: 103.5%; }
@media (max-width: 700px) { .film-frame__string { left: -1.5%; width: 103%; } .film-frame__pin--l { left: -1.5%; } .film-frame__pin--r { left: 101.5%; } }

/* ----- Bezel ----- */
.film-frame__bezel {
  position: relative; z-index: 1;
  padding: var(--bezel) var(--bezel) 0;
  border-radius: var(--r-outer);
  background:
    linear-gradient(180deg, rgb(255 255 255 / 0.05), transparent 22%),
    linear-gradient(180deg, #1b1f28, #101218 70%);
  box-shadow:
    inset 0 0 0 1px rgb(232 234 240 / 0.07),
    0 2px 0 0 rgb(0 0 0 / 0.6),
    0 60px 120px -50px rgb(0 0 0 / 0.95),
    0 50px 140px -60px rgb(255 160 70 / 0.28);
  transition: box-shadow 600ms var(--ease);
}
.film-frame.is-playing .film-frame__bezel {
  box-shadow: inset 0 0 0 1px rgb(232 234 240 / 0.07), 0 2px 0 0 rgb(0 0 0 / 0.6), 0 60px 120px -50px rgb(0 0 0 / 0.95), 0 50px 160px -50px rgb(255 160 70 / 0.42);
}
/* The glint: a 1 px conic border, masked to the ring. */
.film-frame__bezel::before {
  content: ""; position: absolute; inset: 0; z-index: 2; border-radius: inherit; padding: 1px; pointer-events: none;
  background: conic-gradient(from var(--film-glint) at 50% 50%,
    rgb(255 180 84 / 0) 0deg, rgb(255 180 84 / 0.95) 28deg, rgb(255 236 200 / 1) 40deg, rgb(79 163 255 / 0.7) 58deg, rgb(255 180 84 / 0) 96deg,
    rgb(255 180 84 / 0) 190deg, rgb(255 180 84 / 0.35) 222deg, rgb(255 180 84 / 0) 262deg, rgb(255 180 84 / 0) 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  animation: film-glint 16s linear infinite;
  opacity: 0.8; transition: opacity 600ms var(--ease);
}
.film-frame.is-playing .film-frame__bezel::before { animation-duration: 7s; opacity: 1; }
@keyframes film-glint { to { --film-glint: 360deg; } }
.film-frame.is-offscreen .film-frame__bezel::before, .film-frame.is-offscreen .film-bigplay__disc::after { animation-play-state: paused; }
@media (prefers-reduced-motion: reduce) { .film-frame__bezel::before { animation: none; --film-glint: 310deg; } }

/* Keeps the 16:9 hole in the frame while the screen is docked to the corner. */
.film-frame__slot { position: relative; aspect-ratio: 16 / 9; border-radius: var(--r-inner); background: #000 center / cover no-repeat; box-shadow: 0 0 0 1px rgb(0 0 0 / 0.9), inset 0 0 0 1px rgb(255 255 255 / 0.05); }
.film-frame__slot.is-empty::after { content: "Playing in the corner"; position: absolute; inset: 0; display: grid; place-items: center; color: var(--text-2); font-size: var(--step--1); letter-spacing: 0.08em; background: rgb(9 10 13 / 0.78); border-radius: inherit; }

/* The plaque: the frame's lower lip. */
.film-frame__plaque {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: clamp(34px, 3.6vw, 46px); padding: 0 clamp(6px, 1vw, 12px);
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--dim);
}
.film-frame__plaque b { color: var(--reference); font-weight: 700; }
.film-frame__plaque .num { letter-spacing: 0.08em; font-size: 0.75rem; }
.film-frame__now { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
@media (max-width: 560px) { .film-frame__plaque > :first-child { display: none; } }

/* ----- Screen ----- */
.film-screen { position: absolute; inset: 0; border-radius: var(--r-inner); overflow: hidden; background: #000; isolation: isolate; }
.film-screen video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; background: #000; }
.film-screen:fullscreen { border-radius: 0; }
.film-screen:fullscreen video { object-fit: contain; }
.film-screen video::cue { font-family: var(--font-ui); font-size: 0.9em; color: #fff; background: rgb(9 10 13 / 0.78); }

/* Poster state: the big play button */
.film-bigplay {
  position: absolute; inset: 0; z-index: 3; display: grid; place-items: center; align-content: center; gap: 20px; width: 100%;
  color: var(--text); text-align: center;
  background: radial-gradient(ellipse at 50% 55%, rgb(9 10 13 / 0.15), rgb(9 10 13 / 0.62));
  transition: opacity 320ms var(--ease), visibility 0s linear 320ms;
}
.film-screen.has-started .film-bigplay { opacity: 0; visibility: hidden; pointer-events: none; }
.film-bigplay__disc {
  position: relative; width: clamp(72px, 9vw, 112px); aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center;
  background: rgb(15 17 21 / 0.55); -webkit-backdrop-filter: blur(14px) saturate(160%); backdrop-filter: blur(14px) saturate(160%);
  box-shadow: inset 0 0 0 1.5px rgb(255 180 84 / 0.9), 0 0 0 10px rgb(255 180 84 / 0.08), 0 24px 60px -10px rgb(0 0 0 / 0.8);
  transition: transform 320ms var(--ease-out), box-shadow 320ms var(--ease-out), background-color 320ms var(--ease);
}
.film-bigplay__disc::after { content: ""; position: absolute; inset: -10px; border-radius: 50%; border: 1px solid rgb(255 180 84 / 0.5); animation: film-ring 2.4s var(--ease-out) infinite; }
@keyframes film-ring { from { transform: scale(0.92); opacity: 0.9; } to { transform: scale(1.5); opacity: 0; } }
.film-bigplay__disc svg { width: 38%; height: 38%; margin-left: 6%; fill: var(--reference); }
.film-bigplay:hover .film-bigplay__disc, .film-bigplay:focus-visible .film-bigplay__disc { transform: scale(1.06); background: rgb(255 180 84 / 0.16); box-shadow: inset 0 0 0 1.5px var(--reference), 0 0 0 14px rgb(255 180 84 / 0.12), 0 24px 70px -10px rgb(255 160 70 / 0.5); }
.film-bigplay__label { display: grid; gap: 4px; justify-items: center; }
.film-bigplay__title { font-family: var(--font-display); font-size: clamp(1.4rem, 1rem + 2vw, 2.6rem); line-height: 1; letter-spacing: -0.01em; text-shadow: 0 2px 24px rgb(0 0 0 / 0.8); }
.film-bigplay__meta { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: rgb(232 234 240 / 0.78); }
@media (max-width: 560px) { .film-bigplay { gap: 12px; } }

/* Controls */
.film-controls {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 4; display: grid; grid-template-columns: auto auto minmax(0, 1fr) auto auto auto; align-items: center; gap: 4px 6px;
  padding: 44px clamp(8px, 1.4vw, 18px) clamp(6px, 1vw, 12px);
  background: linear-gradient(to top, rgb(5 6 8 / 0.86), rgb(5 6 8 / 0.5) 45%, transparent);
  opacity: 0; transform: translateY(6px); transition: opacity 240ms var(--ease), transform 240ms var(--ease); pointer-events: none;
  visibility: hidden;   /* not tabbable until the film has started */
}
.film-screen.has-started .film-controls { visibility: visible; }
.film-screen.has-ended .film-controls { visibility: hidden; }
.film-screen.has-started.show-controls .film-controls, .film-screen.has-started:focus-within .film-controls, .film-screen.has-started.is-paused .film-controls { opacity: 1; transform: none; pointer-events: auto; }
.film-screen.has-ended .film-controls { opacity: 0; pointer-events: none; }
.film-screen.hide-cursor { cursor: none; }
.film-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 10px; color: var(--text); transition: background-color var(--t-state) var(--ease), color var(--t-state) var(--ease); }
.film-btn:hover { background: rgb(232 234 240 / 0.12); }
.film-btn svg { width: 22px; height: 22px; fill: currentColor; }
.film-btn[aria-pressed="true"] { color: var(--reference); }
.film-btn .i-pause, .film-btn .i-muted, .film-btn .i-exitfs { display: none; }
.film-screen:not(.is-paused) [data-film-toggle] .i-play { display: none; }
.film-screen:not(.is-paused) [data-film-toggle] .i-pause { display: block; }
.film-screen.is-muted [data-film-mute] .i-vol { display: none; }
.film-screen.is-muted [data-film-mute] .i-muted { display: block; }
.film-screen:fullscreen [data-film-fs] .i-fs { display: none; }
.film-screen:fullscreen [data-film-fs] .i-exitfs { display: block; }
.film-time { font-family: var(--font-mono); font-size: 0.75rem; color: rgb(232 234 240 / 0.86); padding: 0 6px; white-space: nowrap; }

/* The scrubber: a green node riding an amber string. */
.film-scrub { position: relative; height: 40px; display: grid; align-items: center; margin-inline: 6px; }
.film-scrub__ticks { position: absolute; left: 0; right: 0; top: 50%; height: 9px; margin-top: -4.5px; pointer-events: none; }
.film-scrub__ticks i { position: absolute; top: 0; width: 1.5px; height: 9px; margin-left: -0.75px; border-radius: 1px; background: rgb(232 234 240 / 0.55); }
.film-scrub input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 40px; margin: 0; background: transparent; cursor: pointer; position: relative; z-index: 1;
}
.film-scrub input[type="range"]::-webkit-slider-runnable-track { height: 2px; border-radius: 1px; background: linear-gradient(90deg, var(--reference) var(--p, 0%), rgb(232 234 240 / 0.26) var(--p, 0%)); }
.film-scrub input[type="range"]::-moz-range-track { height: 2px; border-radius: 1px; background: rgb(232 234 240 / 0.26); }
.film-scrub input[type="range"]::-moz-range-progress { height: 2px; border-radius: 1px; background: var(--reference); }
.film-scrub input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 12px; height: 12px; margin-top: -5px; border-radius: 50%; border: 0; background: var(--in-tune); box-shadow: 0 0 10px rgb(61 220 132 / 0.95); transition: transform var(--t-state) var(--ease); }
.film-scrub input[type="range"]::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; border: 0; background: var(--in-tune); box-shadow: 0 0 10px rgb(61 220 132 / 0.95); }
.film-scrub input[type="range"]:hover::-webkit-slider-thumb, .film-scrub input[type="range"]:focus-visible::-webkit-slider-thumb { transform: scale(1.3); }
.film-scrub input[type="range"]:focus-visible { outline: 2px solid transparent; outline-offset: 2px; }   /* transparent: painted by forced-colors */
.film-scrub input[type="range"]:focus-visible::-moz-range-track { box-shadow: 0 0 0 3px rgb(79 163 255 / 0.5); }
.film-scrub input[type="range"]:hover::-moz-range-thumb, .film-scrub input[type="range"]:focus-visible::-moz-range-thumb { transform: scale(1.3); }
.film-scrub input[type="range"]:focus-visible::-webkit-slider-runnable-track { box-shadow: 0 0 0 3px rgb(79 163 255 / 0.5); }

/* End card: the film hands over to the call to action. */
.film-end {
  position: absolute; inset: 0; z-index: 5; display: grid; place-items: center; align-content: center; gap: clamp(12px, 2vw, 26px); text-align: center; padding: 24px;
  background: radial-gradient(ellipse at 50% 40%, rgb(15 17 21 / 0.82), rgb(5 6 8 / 0.96));
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden; transition: opacity 500ms var(--ease), visibility 0s linear 500ms;
}
.film-screen.has-ended .film-end { opacity: 1; visibility: visible; transition-delay: 0s; }
.film-end__title { font-family: var(--font-display); font-size: clamp(1.5rem, 1rem + 3vw, 3.5rem); line-height: 1; }
.film-end__title em { font-style: italic; color: var(--reference); }
.film-end__row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; align-items: center; }

/* Docked mini-player: the film follows you down the page while it plays. */
.film-dock-close { display: none; }
@media (min-width: 821px) {
  .film-screen.is-docked {
    position: fixed; inset: auto 24px 24px auto; width: min(320px, 26vw); height: auto; aspect-ratio: 16 / 9; z-index: 850; border-radius: 14px;
    box-shadow: 0 0 0 1px rgb(255 180 84 / 0.5), 0 30px 80px -10px rgb(0 0 0 / 0.9), 0 20px 80px -20px rgb(255 160 70 / 0.35);
    animation: film-dock-in 360ms var(--ease-out);
  }
  @keyframes film-dock-in { from { opacity: 0; transform: translateY(16px) scale(0.96); } to { opacity: 1; transform: none; } }
  .film-screen.is-docked .film-controls { grid-template-columns: auto minmax(0, 1fr) auto; padding: 28px 6px 4px; }
  .film-screen.is-docked .film-time, .film-screen.is-docked [data-film-cc], .film-screen.is-docked [data-film-fs] { display: none; }
  .film-screen.is-docked .film-dock-close {
    display: grid; place-items: center; position: absolute; z-index: 6; top: 8px; right: 8px; width: 30px; height: 30px; border-radius: 50%;
    background: rgb(9 10 13 / 0.7); color: var(--text); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  }
  /* The docked screen lives inside the bezel's stacking context: lift it above the page (but under the nav, 800). */
  .film-frame.has-dock .film-frame__bezel { z-index: 700; }
  /* Pointer inside a live instrument: the dock ducks out of the way; hovering or focusing it brings it back. */
  @media (prefers-reduced-motion: no-preference) { .film-screen.is-docked { transition: transform 240ms var(--ease-out); } }
  body:has(.panel:hover) .film-screen.is-docked:not(:hover):not(:has(:focus-visible)) { transform: translateY(calc(100% - 44px)); }   /* keyboard focus keeps it up; a mouse click on play does not */
  .film-dock-close svg { width: 14px; height: 14px; stroke: currentColor; stroke-width: 2; fill: none; }
}

/* ----- Chapters under the frame ----- */
.film-chapters { margin-top: clamp(18px, 2.4vw, 30px); }
.film-chapters ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 0; border-top: 1px solid var(--hairline); }
.film-chapters li { display: contents; }
.film-chapter {
  position: relative; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; align-items: baseline; width: 100%;
  padding: 16px 14px 16px 2px; text-align: left; color: var(--text-2); border-bottom: 1px solid var(--hairline);
  transition: color var(--t-state) var(--ease);
}
.film-chapter::before { content: ""; position: absolute; left: 0; right: 100%; top: -1px; height: 1.5px; background: var(--reference); transition: right 360ms var(--ease-out); }
.film-chapter:hover { color: var(--text); }
.film-chapter.is-active { color: var(--text); }
.film-chapter.is-active::before { right: 14px; }
.film-chapter__n { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--reference); letter-spacing: 0.06em; }
.film-chapter__t { font-weight: 650; font-size: 0.9375rem; line-height: 1.3; overflow: hidden; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; }
.film-chapter__at { font-family: var(--font-mono); font-size: 0.75rem; }
@media (min-width: 700px) { .film-chapters li + li .film-chapter { padding-left: 14px; border-left: 1px solid var(--hairline); } }
@media (max-width: 1000px) {
  .film-chapter { grid-template-columns: auto minmax(0, 1fr); row-gap: 2px; }
  .film-chapter__at { grid-column: 2; }
  .film-chapter__t { -webkit-line-clamp: 1; line-clamp: 1; }
}

/* ----- Without the custom player (no JS, or film.js failed to load): plain native controls ----- */
html:not(.js) .film-bigplay, html:not(.js) .film-controls, html:not(.js) .film-end, html:not(.js) .film-dock-close, html:not(.js) .film-frame__plaque [data-film-duration],
html.film-native .film-bigplay, html.film-native .film-controls, html.film-native .film-end, html.film-native .film-dock-close { display: none; }
.film-bigplay__dur:not(:empty)::before { content: " · "; }
.film-screen.has-failed .film-bigplay__disc::after { animation: none; opacity: 0; }