/* ==========================================================================
   GIF-TV: Net Art CRT Television
   Aesthetic: 90s MTV Liquid Television, Vaporwave, Cyberpunk & Retro CRT
   ========================================================================== */

:root {
  --bg-void: #060608;
  --tv-chassis-outer: #1c1c22;
  --tv-chassis-inner: #0f0f14;
  --tv-chassis-bezel: #25252e;
  --screen-phosphor-glow: rgba(57, 255, 20, 0.15);
  --osd-green: #39ff14;
  --osd-yellow: #ffea00;
  --mtv-pink: #ff007f;
  --mtv-cyan: #00f0ff;
  --mtv-yellow: #ffee00;
  --accent-led-red: #ff2222;
  --accent-led-green: #22ff55;
  --accent-led-amber: #ffaa00;
  --font-osd: 'VT323', 'Courier New', monospace;
  --font-ui: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-void);
  color: #e0e0e8;
  font-family: var(--font-ui);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  position: relative;
  user-select: none;
}

/* Background Atmospheric Glow */
.ambient-glow {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90vw;
  max-width: 950px;
  height: 70vh;
  max-height: 650px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, rgba(255, 0, 127, 0.04) 45%, transparent 70%);
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
  transition: background 1.5s ease;
}

/* Header Minimal Net Art Title */
.header-bar {
  position: absolute;
  top: 18px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #66667a;
}

.header-center-credit {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: #88889e;
}

.heart-pulse {
  color: #ff2255;
  display: inline-block;
  animation: pulse-heart 1.2s infinite ease-in-out;
  margin: 0 2px;
}

@keyframes pulse-heart {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 2px #ff2255); }
  50% { transform: scale(1.35); filter: drop-shadow(0 0 6px #ff2255); }
}

.author-link {
  color: var(--mtv-cyan);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 1px dotted var(--mtv-cyan);
  transition: all 0.2s ease;
}

.author-link:hover {
  color: #ffffff;
  text-shadow: 0 0 8px var(--mtv-cyan);
  border-bottom-style: solid;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #9999b0;
}

.header-logo span.badge {
  background: #ff007f;
  color: #fff;
  font-weight: 900;
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 9px;
  letter-spacing: 1px;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-status .live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-led-red);
  box-shadow: 0 0 8px var(--accent-led-red);
  animation: pulse-dot 1.4s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.8); }
}

/* ==========================================================================
   TV CHASSIS CONTAINER
   ========================================================================== */

.tv-wrapper {
  position: relative;
  z-index: 2;
  width: 94vw;
  max-width: 860px;
  margin: 40px auto 20px auto;
  perspective: 1000px;
}

.tv-chassis {
  position: relative;
  background: linear-gradient(145deg, #2a2a34 0%, #16161c 60%, #111116 100%);
  border-radius: 36px;
  padding: 28px 28px 24px 28px;
  box-shadow: 
    0 25px 60px -10px rgba(0, 0, 0, 0.9),
    0 10px 20px -5px rgba(0, 0, 0, 0.7),
    inset 0 2px 2px rgba(255, 255, 255, 0.15),
    inset 0 -4px 6px rgba(0, 0, 0, 0.8);
  border: 2px solid #333340;
}

/* Top Air Vents */
.tv-chassis::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 140px;
  height: 4px;
  background: repeating-linear-gradient(to right, #0d0d12 0px, #0d0d12 6px, transparent 6px, transparent 12px);
  border-radius: 2px;
}

/* ==========================================================================
   CRT SCREEN HOUSING & GLASS BULB
   ========================================================================== */

.tv-bezel {
  position: relative;
  background: #0d0d12;
  border-radius: 26px;
  padding: 18px;
  box-shadow: 
    inset 0 10px 25px rgba(0, 0, 0, 0.95),
    inset 0 -6px 15px rgba(0, 0, 0, 0.9),
    0 2px 4px rgba(255, 255, 255, 0.05);
  border: 1px solid #1a1a24;
}

.crt-screen-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #030304;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 
    inset 0 0 50px rgba(0, 0, 0, 0.95),
    inset 0 0 120px rgba(0, 0, 0, 0.8);
  transform: translateZ(0);
}

/* TV Video & Image Stage */
.crt-stage {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  overflow: hidden;
}

.crt-media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.2s ease;
  filter: contrast(1.15) saturate(1.2) brightness(0.96);
}

.crt-media.hidden {
  opacity: 0;
  pointer-events: none;
}

/* Procedural Fallback Canvas */
#fallback-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  z-index: 1;
}

#fallback-canvas.active {
  display: block;
}

/* ==========================================================================
   ANALOG ARTIFACT LAYERS (SCANLINES, PHOSPHOR, NOISE, GLARE)
   ========================================================================== */

/* Static Noise Overlay Canvas */
#static-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
  opacity: 0.95;
  mix-blend-mode: screen;
}

/* Phosphor Subpixel Aperture Grille */
.crt-phosphors {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 4;
  pointer-events: none;
  background: repeating-linear-gradient(
    to right,
    rgba(255, 0, 0, 0.04) 0px,
    rgba(0, 255, 0, 0.04) 1px,
    rgba(0, 0, 255, 0.04) 2px,
    transparent 3px
  );
}

/* Horizontal Scanlines */
.crt-scanlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0) 0px,
    rgba(255, 255, 255, 0) 1px,
    rgba(0, 0, 0, 0.42) 2px,
    rgba(0, 0, 0, 0.42) 3px
  );
  animation: scanlines-drift 18s linear infinite;
}

@keyframes scanlines-drift {
  from { background-position: 0 0; }
  to { background-position: 0 240px; }
}

/* Tube Curvature Barrel Vignette */
.crt-curvature {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 6;
  pointer-events: none;
  box-shadow: 
    inset 0 0 70px rgba(0, 0, 0, 0.85),
    inset 0 0 140px rgba(0, 0, 0, 0.65);
  background: radial-gradient(circle at center, transparent 65%, rgba(0, 0, 0, 0.6) 100%);
}

/* Curved Glass Screen Glare */
.crt-glare {
  position: absolute;
  top: -20%;
  left: -20%;
  width: 140%;
  height: 80%;
  z-index: 7;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.08) 0%,
    rgba(255, 255, 255, 0.02) 25%,
    transparent 50%
  );
  border-radius: 50%;
  transform: rotate(-15deg);
}

/* ==========================================================================
   ON-SCREEN DIRECT NAVIGATION ARROWS
   ========================================================================== */

.screen-arrow-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 9;
  width: 44px;
  height: 72px;
  background: rgba(14, 14, 20, 0.45);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #e0e0f0;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.3, 1.2);
  opacity: 0.65;
  user-select: none;
  outline: none;
}

.screen-arrow-btn:hover {
  opacity: 1;
  background: rgba(20, 20, 30, 0.9);
  border-color: var(--mtv-cyan);
  color: var(--mtv-cyan);
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.5), inset 0 0 10px rgba(0, 240, 255, 0.25);
  transform: translateY(-50%) scale(1.08);
}

.screen-arrow-btn:active {
  transform: translateY(-50%) scale(0.92);
  background: #000;
  box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.9);
}

.screen-arrow-btn.arrow-prev {
  left: 8px;
  border-radius: 6px 16px 16px 6px;
}

.screen-arrow-btn.arrow-next {
  right: 8px;
  border-radius: 16px 6px 6px 16px;
}

.screen-arrow-btn .arrow-char {
  display: inline-block;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9);
  pointer-events: none;
}

/* ==========================================================================
   MTV BRANDING & ON-SCREEN GRAPHICS
   ========================================================================== */

/* Morphing MTV Corner Bug */
.mtv-corner-bug {
  position: absolute;
  top: 18px;
  right: 20px;
  z-index: 8;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  pointer-events: none;
  mix-blend-mode: screen;
}

.mtv-logo-box {
  display: flex;
  align-items: baseline;
  font-family: Impact, 'Arial Black', sans-serif;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1;
  text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.9), -1px -1px 0px #000;
}

.mtv-logo-box .m-letter {
  font-size: 32px;
  color: var(--mtv-cyan);
  display: inline-block;
  transform: skewX(-8deg);
  animation: mtv-flicker-cyan 4s infinite alternate;
}

.mtv-logo-box .tv-sub {
  font-size: 15px;
  color: var(--mtv-pink);
  margin-left: 2px;
  font-style: italic;
  animation: mtv-flicker-pink 3.5s infinite alternate;
}

.mtv-corner-sub {
  font-family: var(--font-osd);
  font-size: 11px;
  color: var(--mtv-yellow);
  letter-spacing: 2px;
  margin-top: 2px;
  text-shadow: 1px 1px 2px #000;
}

@keyframes mtv-flicker-cyan {
  0%, 93%, 97% { color: var(--mtv-cyan); filter: drop-shadow(0 0 6px var(--mtv-cyan)); }
  94% { color: #ffffff; filter: drop-shadow(0 0 15px #fff); }
  98% { color: #0088ff; filter: none; }
}

@keyframes mtv-flicker-pink {
  0%, 88%, 94% { color: var(--mtv-pink); filter: drop-shadow(0 0 6px var(--mtv-pink)); }
  89% { color: #ffffff; filter: drop-shadow(0 0 15px #fff); }
  95% { color: #ff55aa; filter: none; }
}

/* Green Phosphor OSD (On-Screen Display) */
.crt-osd {
  position: absolute;
  top: 20px;
  left: 24px;
  z-index: 8;
  font-family: var(--font-osd);
  font-size: 22px;
  color: var(--osd-green);
  text-shadow: 0 0 8px var(--osd-green), 0 0 2px #fff;
  letter-spacing: 2px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  line-height: 1.3;
}

.crt-osd.visible {
  opacity: 1;
}

.crt-osd .osd-tag {
  color: var(--osd-yellow);
  font-size: 15px;
  text-shadow: 0 0 6px var(--osd-yellow);
}

/* Lower-Third MTV Music Video Card */
.mtv-lower-third {
  position: absolute;
  bottom: 24px;
  left: 24px;
  max-width: 80%;
  z-index: 8;
  background: rgba(8, 8, 12, 0.88);
  border-left: 4px solid var(--mtv-pink);
  border-top: 1px solid var(--mtv-cyan);
  padding: 8px 14px;
  transform: translateX(-120%);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.2), opacity 0.4s ease;
  pointer-events: none;
  box-shadow: 4px 4px 15px rgba(0, 0, 0, 0.8);
}

.mtv-lower-third.active {
  transform: translateX(0);
  opacity: 1;
}

.mtv-lower-third .lt-title {
  font-size: 13px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 3px;
}

.mtv-lower-third .lt-meta {
  font-size: 11px;
  color: #a0a0ba;
  letter-spacing: 0.5px;
}

.mtv-lower-third .lt-meta span {
  color: var(--mtv-cyan);
  font-weight: 600;
}

.mtv-lower-third .lt-channel {
  font-family: var(--font-osd);
  font-size: 11px;
  color: var(--osd-green);
  margin-top: 4px;
  letter-spacing: 1px;
}

/* ==========================================================================
   TV CHASSIS PHYSICAL DETAILS & BOTTOM CONTROL PANEL
   ========================================================================== */

.tv-chassis-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  padding: 0 8px;
}

/* Vintage Speaker Grille */
.speaker-grille {
  display: flex;
  gap: 5px;
  align-items: center;
}

.speaker-slit {
  width: 4px;
  height: 24px;
  background: #0d0d12;
  border-radius: 2px;
  box-shadow: inset 0 1px 2px #000, 0 1px 1px rgba(255, 255, 255, 0.05);
}

/* Brand Badge */
.brand-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.brand-text {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 3px;
  color: #555566;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.1);
}

.brand-sub {
  font-size: 7px;
  letter-spacing: 1.5px;
  color: #444452;
}

/* Chassis Power LED & Switch */
.chassis-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.power-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  letter-spacing: 1px;
  color: #77778a;
  text-transform: uppercase;
}

.led-diode {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #331111;
  border: 1px solid #110000;
  transition: all 0.3s ease;
}

.led-diode.on {
  background: var(--accent-led-red);
  box-shadow: 0 0 10px var(--accent-led-red), 0 0 3px #fff;
}

/* ==========================================================================
   NET ART FLOATING REMOTE DOCK
   ========================================================================== */

.remote-dock {
  position: relative;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  background: rgba(18, 18, 24, 0.85);
  backdrop-filter: blur(12px);
  padding: 12px 20px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7);
  margin-bottom: 24px;
  max-width: 860px;
  width: 94vw;
}

.remote-btn {
  background: #23232c;
  color: #c8c8d8;
  border: 1px solid #333340;
  border-radius: 10px;
  padding: 10px 14px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: all 0.15s ease;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.remote-btn:hover {
  background: #2e2e3a;
  color: #ffffff;
  border-color: #4a4a5e;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.5);
}

.remote-btn:active {
  transform: translateY(1px);
  background: #181820;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.6);
}

.remote-btn.btn-pwr {
  color: #ff5555;
}
.remote-btn.btn-pwr:hover {
  border-color: #ff5555;
  box-shadow: 0 0 12px rgba(255, 85, 85, 0.4);
}

.remote-btn.btn-degauss {
  color: var(--mtv-cyan);
}
.remote-btn.btn-degauss:hover {
  border-color: var(--mtv-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
}

.remote-btn.btn-zap.active {
  background: #ffaa00;
  color: #000;
  border-color: #ffaa00;
  box-shadow: 0 0 14px rgba(255, 170, 0, 0.6);
  animation: zap-glow 1.5s infinite alternate;
}

@keyframes zap-glow {
  from { box-shadow: 0 0 8px rgba(255, 170, 0, 0.4); }
  to { box-shadow: 0 0 20px rgba(255, 170, 0, 0.9); }
}

.btn-icon {
  font-size: 14px;
}

.remote-btn.btn-nav-arrow {
  color: #ffffff;
  font-weight: 700;
}

.remote-btn.btn-highlight-next {
  background: linear-gradient(135deg, #1f2a3a 0%, #243548 100%);
  border-color: var(--mtv-cyan);
  color: var(--mtv-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.25), inset 0 1px 1px rgba(255, 255, 255, 0.2);
}

.remote-btn.btn-highlight-next:hover {
  background: linear-gradient(135deg, #00f0ff 0%, #0099ff 100%);
  color: #000;
  border-color: #ffffff;
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.7);
}

/* Keyboard Guide Footer & Milan Credit */
.footer-guide {
  font-size: 11px;
  color: #555566;
  letter-spacing: 0.5px;
  text-align: center;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 5;
}

.footer-shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.kbd-shortcut {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

kbd {
  background: #181820;
  border: 1px solid #333340;
  border-radius: 4px;
  padding: 2px 6px;
  font-family: monospace;
  font-size: 10px;
  color: #88889a;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.footer-credit {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: #88889e;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ==========================================================================
   CRT DEGAUSS & POWER ON/OFF ANIMATIONS
   ========================================================================== */

/* Magnetic Degauss Wobble & Chromatic Glitch */
.is-degaussing {
  animation: degauss-shake 1.1s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
  filter: hue-rotate(90deg) contrast(1.4) saturate(1.8) drop-shadow(0 0 15px rgba(0, 240, 255, 0.8));
}

@keyframes degauss-shake {
  10%, 90% { transform: translate3d(-3px, 1px, 0) scale(1.02); }
  20%, 80% { transform: translate3d(5px, -3px, 0) scale(0.98); }
  30%, 50%, 70% { transform: translate3d(-6px, 4px, 0) scale(1.03); }
  40%, 60% { transform: translate3d(6px, -2px, 0) scale(0.97); }
}

/* Cathode Power Off: Collapse to razor line, then dot, then off */
.crt-turn-off {
  animation: crt-power-off 0.65s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

@keyframes crt-power-off {
  0% {
    transform: scale(1, 1);
    filter: brightness(1);
    opacity: 1;
  }
  45% {
    transform: scale(1, 0.003);
    filter: brightness(2.5);
    background: #ffffff;
    opacity: 1;
  }
  75% {
    transform: scale(0.005, 0.003);
    filter: brightness(5);
    background: #ffffff;
    opacity: 0.9;
  }
  100% {
    transform: scale(0.001, 0.001);
    filter: brightness(0);
    opacity: 0;
  }
}

/* Cathode Power On: Bloom from dot to full screen */
.crt-turn-on {
  animation: crt-power-on 0.6s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}

@keyframes crt-power-on {
  0% {
    transform: scale(0.002, 0.002);
    filter: brightness(6);
    opacity: 0;
    background: #ffffff;
  }
  35% {
    transform: scale(1, 0.004);
    filter: brightness(3);
    opacity: 1;
    background: #ffffff;
  }
  65% {
    transform: scale(1, 1);
    filter: brightness(1.8);
    opacity: 1;
  }
  100% {
    transform: scale(1, 1);
    filter: brightness(1);
    opacity: 1;
  }
}

/* Screen is powered off state */
.screen-off .crt-stage,
.screen-off .crt-osd,
.screen-off .mtv-corner-bug,
.screen-off .mtv-lower-third,
.screen-off #static-canvas {
  display: none !important;
}

.screen-off {
  background: #020203 !important;
}

/* Fullscreen Mode */
body.is-fullscreen {
  background: #000;
}

body.is-fullscreen .tv-wrapper {
  max-width: 100vw;
  width: 100vw;
  margin: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.is-fullscreen .tv-chassis {
  border-radius: 0;
  width: 100vw;
  height: 100vh;
  padding: 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

body.is-fullscreen .tv-bezel {
  height: calc(100vh - 70px);
  padding: 10px;
}

body.is-fullscreen .crt-screen-container {
  height: 100%;
  aspect-ratio: auto;
}

body.is-fullscreen .header-bar,
body.is-fullscreen .footer-guide {
  display: none;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .tv-chassis {
    padding: 16px 16px 14px 16px;
    border-radius: 24px;
  }
  .tv-bezel {
    padding: 10px;
    border-radius: 18px;
  }
  .mtv-logo-box .m-letter {
    font-size: 24px;
  }
  .mtv-logo-box .tv-sub {
    font-size: 12px;
  }
  .crt-osd {
    font-size: 17px;
  }
  .remote-dock {
    padding: 10px 14px;
    gap: 6px;
  }
  .remote-btn {
    padding: 8px 10px;
    font-size: 11px;
  }
}