/* tips-visuals.css — the "show, don't just tell" visuals on the Tips screen.
 *
 * Styles the animated SVG motion diagrams (RR.tipsVisuals) and the per-topic
 * "See it in action" video links. Uses ONLY the app's semantic + brand tokens,
 * so every diagram renders correctly in BOTH light and dark themes. Structural
 * strokes (court, net, floor) use semantic tokens so they re-theme; the ball,
 * player and brand accents use fixed hues so a thing always reads the same
 * colour. ALL motion lives behind prefers-reduced-motion — with motion off,
 * every travelling ball simply parks at the end of its path, so the diagram is
 * still a complete, readable still. No images, no GIFs, no network. */

/* ====================== Figure wrapper (mirrors .dgm) ==================== */
.tv {
  margin: var(--sp-4) 0 0;
}
.tv__title {
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 800;
  color: var(--text);
}
.tv__canvas {
  display: flex;
  justify-content: center;
  padding: var(--sp-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}
.tv-svg {
  width: 100%;
  max-width: 320px;
  height: auto;
  display: block;
}
.tv--compact .tv-svg { max-width: 100%; }

/* AI illustration replacing the animated SVG (see js/diagram-images.js). The
 * picture is self-contained, so only the title + caption sit around it. */
.tv__canvas--img { padding: 0; overflow: hidden; background: var(--surface); }
.tv__img {
  width: 100%;
  max-width: 360px;
  height: auto;
  display: block;
  border-radius: var(--radius-card);
}
.tv--compact .tv__img { max-width: 100%; }

/* Placeholder for a Tips scene whose picture isn't generated yet. */
.tv__placeholder {
  flex-direction: column;
  gap: var(--sp-2);
  min-height: 104px;
  color: var(--text-muted);
  background: var(--surface-2);
  border-style: dashed;
}
.tv__ph-icon {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.7;
}
.tv__ph-text { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.02em; }

.tv__cap {
  margin-top: var(--sp-2);
  font-size: var(--fs-sm);
  line-height: 1.45;
  color: var(--text-muted);
}

/* ============================ SVG primitives ============================ */
.tv-floor { stroke: var(--text-muted); stroke-width: 2; opacity: 0.55; stroke-linecap: round; }
.tv-net   { stroke: var(--text); stroke-width: 3; stroke-dasharray: 2 3; }
.tv-post  { fill: var(--text); }
.tv-target { fill: var(--sun); fill-opacity: 0.5; stroke: none; }
.tv-foot  { fill: var(--text-muted); opacity: 0.5; }
.tv-hands { fill: var(--teal); stroke: var(--surface-2); stroke-width: 1; }
.tv-platform { stroke: var(--coral); stroke-width: 4; stroke-linecap: round; }

.tv-fig__head { fill: var(--teal); stroke: var(--surface-2); stroke-width: 1.5; }
.tv-fig__body { fill: var(--teal); stroke: var(--surface-2); stroke-width: 1.5; }

.tv-trail { fill: none; stroke: var(--text-muted); stroke-width: 2; stroke-dasharray: 5 5; opacity: 0.7; }
.tv-arrowhead { fill: var(--text-muted); }

.tv-ball-face { fill: var(--white); stroke: var(--navy); stroke-width: 1.4; }
.tv-ball-seam { fill: none; stroke: var(--navy); stroke-width: 1.1; }

.tv-label {
  fill: var(--text-muted);
  font-family: var(--font-stack);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* The travelling ball — loops along its offset-path, fading at the seam so the
   restart never snaps. transform-box keeps the glyph centred on the path. */
.tv-ball {
  offset-rotate: 0deg;
  animation-name: tv-travel;
  animation-timing-function: var(--ease);
  animation-iteration-count: infinite;
}
@keyframes tv-travel {
  0%   { offset-distance: 0%;   opacity: 0; }
  8%   { opacity: 1; }
  90%  { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

/* ============================ Rotation diagram ========================== */
.tv-court { fill: var(--surface); stroke: var(--text); stroke-width: 1.6; }
.tv-net-h { stroke: var(--text); stroke-width: 3; stroke-dasharray: 2 3; }
.tv-rot-loop { fill: none; stroke: var(--text-muted); stroke-width: 1.4; stroke-dasharray: 4 5; opacity: 0.7; }
.tv-pos { fill: var(--slate); stroke: var(--surface); stroke-width: 1.5; }
.tv-pos-label { fill: #fff; font-family: var(--font-stack); font-size: 14px; font-weight: 800; }
.tv-rot-hi {
  fill: none;
  stroke: var(--coral);
  stroke-width: 3;
  offset-rotate: 0deg;
  animation: tv-rotate 7s linear infinite;
}
@keyframes tv-rotate {
  0%   { offset-distance: 0%; }
  100% { offset-distance: 100%; }
}

/* ============================ Practice blocks ========================== */
.tv-seg { stroke: var(--surface-2); stroke-width: 1.5; }
.tv-seg--warm  { fill: var(--teal); }
.tv-seg--skill { fill: var(--sun); }
.tv-seg--game  { fill: var(--coral); }
.tv-seg--cool  { fill: var(--i-taper); }
.tv-seg-label {
  fill: var(--text-muted);
  font-family: var(--font-stack);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.03em;
}
.tv-sweep {
  fill: #fff;
  opacity: 0.35;
  animation: tv-sweep 4.2s var(--ease) infinite;
}
@keyframes tv-sweep {
  0%   { transform: translateX(-46px); opacity: 0; }
  12%  { opacity: 0.4; }
  88%  { opacity: 0.4; }
  100% { transform: translateX(300px); opacity: 0; }
}

/* ============================ Breathing pulse ========================== */
.tv-breathe-ring { fill: none; stroke: var(--teal); stroke-width: 1.5; opacity: 0.35; }
.tv-breathe-ring--2 { opacity: 0.55; }
.tv-breathe-core { fill: var(--teal); opacity: 0.22; }
.tv-breathe {
  transform-origin: 100px 62px;
  transform-box: view-box;
  animation: tv-breathe 6s ease-in-out infinite;
}
@keyframes tv-breathe {
  0%, 100% { transform: scale(0.72); }
  45%      { transform: scale(1.12); }
  55%      { transform: scale(1.12); }
}
.tv-breathe-word {
  fill: var(--text-muted);
  font-family: var(--font-stack);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

/* ====================== Six-skill animated grid ======================== */
.tv-skills {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}
.tv-skill {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.tv-skill .tv { margin-top: 0; width: 100%; }
.tv-skill .tv-watch { margin-top: var(--sp-2); }
@media (min-width: 540px) {
  .tv-skills { grid-template-columns: 1fr 1fr; gap: var(--sp-4) var(--sp-5); }
}

/* ====================== "See it in action" links ======================= */
.tip__media { margin-top: var(--sp-5); }
.tip__media .eyebrow { margin-bottom: var(--sp-2); }
.tip__videos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.tv-watch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 var(--sp-4);
  border: 1.5px solid var(--field-border);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--link);
  font-size: var(--fs-sm);
  font-weight: 800;
  text-decoration: none;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}
.tv-watch:hover { border-color: var(--link); }
.tv-watch__i {
  display: inline-flex;
  color: var(--link);
}

/* ===================== Motion: off under reduced-motion ================= */
/* With motion disabled every animated element settles into a complete, static
   still: travelling balls park at the END of their path (in the target / over
   the net), the rotation highlight rests on a spot, the breath sits mid-size,
   and the practice sweep disappears. The diagram still reads fully. */
@media (prefers-reduced-motion: reduce) {
  .tv-ball {
    animation: none;
    offset-distance: 100%;
    opacity: 1;
  }
  .tv-rot-hi {
    animation: none;
    offset-distance: 75%;
    opacity: 1;
  }
  .tv-sweep { animation: none; opacity: 0; }
  .tv-breathe { animation: none; transform: scale(1); }
}