/* ============================================================
   GENERATION CHUD — FM
   ------------------------------------------------------------
   Design constants below are LOCKED. Change values inside
   :root to restyle — that's the intended way to work.

   House rules for this sheet:
     - no gradients
     - no box-shadows / text-shadows
     - no rounded corners ANYWHERE except .play
   ============================================================ */

:root {
  --bg:      #0c0a0a;   /* background      */
  --ink:     #e8dfcf;   /* primary text    */
  --accent:  #d63a1e;   /* accent red      */
  --dim:     #6b645c;   /* muted secondary */

  --track:   0.12em;    /* locked letter-spacing */
  --scan-opacity: 0.018;/* locked — do not raise */

  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- scan-line overlay ---------- */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--ink) 0px,
    var(--ink) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: var(--scan-opacity);
  animation: crt-flicker 7s infinite steps(1, end);
}

/* classic-CRT flicker — stays at or under the locked scan-opacity ceiling */
@keyframes crt-flicker {
  0%   { opacity: var(--scan-opacity); }
  9%   { opacity: var(--scan-opacity); }
  10%  { opacity: 0; }
  12%  { opacity: var(--scan-opacity); }
  27%  { opacity: var(--scan-opacity); }
  28%  { opacity: calc(var(--scan-opacity) * 0.1); }
  30%  { opacity: 0; }
  32%  { opacity: var(--scan-opacity); }
  48%  { opacity: var(--scan-opacity); }
  49%  { opacity: 0; }
  50%  { opacity: 0; }
  52%  { opacity: var(--scan-opacity); }
  71%  { opacity: var(--scan-opacity); }
  72%  { opacity: calc(var(--scan-opacity) * 0.2); }
  74%  { opacity: var(--scan-opacity); }
  100% { opacity: var(--scan-opacity); }
}

/* CRT vertical roll on the whole stage — transform only, no shadows/gradients */
.stage {
  animation: crt-roll 4s ease-in-out infinite;
}

@keyframes crt-roll {
  0%, 88%, 100% { transform: translateY(0); }
  89% { transform: translateY(-4px); }
  91% { transform: translateY(3px); }
  93% { transform: translateY(-2px); }
  95% { transform: translateY(1px); }
  96.5% { transform: translateY(0); }
}

/* ---------- layout ---------- */
.stage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8vh 6vw;
  gap: 7vh;
}

/* ---------- wordmark ---------- */
.wordmark {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: var(--track);
  text-transform: uppercase;
  font-size: clamp(2.1rem, 11vw, 8.5rem);
}

.wm-top    { display: block; }

.wm-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

/* the em-rule between CHUD and FM */
.wm-rule {
  color: var(--accent);
  margin: 0 0.14em;
  transform: translateY(-0.04em);
}

.wm-fm { color: var(--accent); }

/* ---------- player slot ---------- */
.player {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  border: 1px solid var(--dim);
  padding: 1rem 1.4rem;
}

/* the ONE rounded element in the whole design */
.play {
  width: 3.4rem;
  height: 3.4rem;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 120ms linear, color 120ms linear;
}

.play:hover:not(:disabled) {
  background: var(--ink);
  color: var(--bg);
}

.play:disabled {
  border-color: var(--dim);
  color: var(--dim);
  cursor: not-allowed;
}

.play-glyph { transform: translateX(0.08em); }

.player-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.player-label {
  letter-spacing: var(--track);
  text-transform: uppercase;
  font-size: 0.86rem;
  color: var(--accent);
}

.player-sub {
  letter-spacing: 0.04em;
  font-size: 0.74rem;
  color: var(--dim);
}

/* ---------- small screens ---------- */
@media (max-width: 480px) {
  .stage  { gap: 5vh; padding: 6vh 5vw; }
  .player { flex-direction: column; text-align: center; gap: 0.9rem; }
  .player-meta { align-items: center; }
}