:root{
  --mcdu-scale: 1;  /* 👈 change zoom in/out */
}

body {
  background: #111;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.mcdu-wrap{
  transform: scale(var(--mcdu-scale));
  transform-origin: top center;  /* zoom start from top */
}


.mcdu {
  position: relative;
  width: 420px;
  height: 700px;

  /* ✅ RAL 7031 (Blue Grey) */
  background: linear-gradient(to bottom,
      #4E5B61,
      #3F4B51);

  border-radius: 18px;
  padding: 20px;
}


/* Screen */
.screen {
  position: absolute;
  top: 71px;
  left: 72px;
  width: 290px;
  height: 233px;

  background: radial-gradient(ellipse at center,
      #000000 0%,
      #000000 70%,
      #000000 100%);

  border-radius: 6px;
  padding: 12px;

  box-shadow:
    inset 0 0 18px rgba(0, 255, 150, 0.15),
    0 0 8px rgba(0, 0, 0, 0.9);
}



.screen-content {
  font-family: "Courier New", monospace;
  font-size: 14px;
  line-height: 1.3;

  color: #00ff8a;

  text-shadow:
    0 0 4px rgba(0, 255, 140, 0.8),
    0 0 10px rgba(0, 255, 140, 0.4);
}

.lcd-amber {
  color: #ffb000;

  text-shadow:
    0 0 4px rgba(255, 176, 0, 0.8),
    0 0 10px rgba(255, 176, 0, 0.4);
}

.screen::after {
  content: "";
  position: absolute;
  inset: 0;


  pointer-events: none;
}


/* LSK buttons */
.lsk {
  position: absolute;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.lsk.left {
  left: 8px;
}

.lsk.right {
  left: 415px;
}

.lsk button {
  width: 36px;
  height: 18px;
  border-radius: 6px;
  font-size: 0px;
  line-height: 1.1;
  /* 👈 line spacing control */
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.lsk button::before {
  content: "";
  width: 16px;        /* 👈 yaha se line lambi/ chhoti karo */
  height: 2px;        /* line thickness */
  background: #e6e6e6;
  border-radius: 2px;
  display: block;
}

/* ===== LEFT LSK diagonal line ===== */
.lsk.left button::after {
  content: "";
  position: absolute;

  /* line size */
  width: 26px;
  height: 2px;

  /* line color */
  background: #cfd6dd;


  right: -31px;
  top: 79%;


  transform: translateY(-50%) rotate(20deg);


  opacity: 0.8;
}

/* ===== RIGHT LSK diagonal line ===== */
.lsk.right button::after {
  content: "";
  position: absolute;

  width: 26px;
  height: 2px;

  background: #cfd6dd;

  left: -31px;
  top: 79%;

  transform: translateY(-50%) rotate(-20deg);
  opacity: 0.8;
}



/* ===== A–Z keypad exact lock ===== */
.alpha-keypad {
  position: absolute;

  /* 🔥 REAL MCDU ke approx coordinates */
  top: 444px;
  left: 169px;

  width: 240px;

  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-auto-rows: 37px;

  gap: 10px;

  /* safety */
  z-index: 5;
}

.alpha-keypad button {
  width: 90%;
  height: 34px;
  border-radius: 6px;
  font-size: 15px;
  line-height: 1.1;
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 🔥 1st, 2nd, 3rd, 4th, 5th column ko thoda right shift */
.alpha-keypad button:nth-child(5n + 1) {
  transform: translateX(16px);
}

.alpha-keypad button:nth-child(5n + 2) {
  transform: translateX(12px);
}

.alpha-keypad button:nth-child(5n + 3) {
  transform: translateX(8px);
}

.alpha-keypad button:nth-child(5n + 4) {
  transform: translateX(5px);
}

.alpha-keypad button:nth-child(5n + 5) {
  transform: translateX(0px);
}

/* ===== Number keypad exact placement ===== */
.number-pad {
  position: absolute;

  /* 🔥 Reference image ke approx coordinates */
  top: 554px;
  left: 45px;

  width: 150px;

  display: grid;
  grid-template-columns: repeat(3, 36px);
  grid-auto-rows: 32px;

  gap: 10px;

  z-index: 5;
}

.number-pad button {
  width: 33px;
  height: 34px;
  font-size: 15px;
  /* 👈 text chhota */
  line-height: 1.1;
  /* 👈 line spacing control */
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e6e9ec;
}

.arrows {
  position: absolute;

  /* 🔥 Reference image ke approx coordinates */
  top: 468px;
  left: 40px;

  width: 150px;

  display: grid;
  grid-template-columns: repeat(2, 43px);
  grid-auto-rows: 26px;

  gap: 12px;

  z-index: 5;
}

.arrows button {
  width: 52px;
  height: 28px;
  border-radius: 6px;
  font-size: 20px;
  line-height: 1.1;
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.function-keys {
  position: absolute;

  /* 🔥 Reference image ke approx coordinates */
  top: 350px;
  left: 43px;

  width: 150px;

  display: grid;
  grid-template-columns: repeat(6, 43px);
  grid-auto-rows: 26px;

  gap: 12px;

  z-index: 5;
}

.function-keys button {
  width: 50px;
  height: 33px;
  border-radius: 6px;
  font-size: 10px;
  line-height: 1.1;
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;


}

.dim {
  position: absolute;

  /* 🔥 Reference image ke approx coordinates */
  top: 363px;
  left: 378px;

  width: 150px;

  display: grid;
  grid-template-columns: repeat(1, 43px);
  grid-auto-rows: 12px;

  gap: 12px;

  z-index: 5;
}

.dim button {
  width: 39px;
  height: 25px;
  border-radius: 6px;
  font-size: 10px;
  line-height: 1.1;
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sp {
  position: absolute;
  top: 679px;
  left: 230px;

  width: 150px;

  display: grid;
  grid-template-columns: repeat(2, 43px);
  grid-auto-rows: 12px;

  gap: 4px;

  z-index: 5;
}

.sp button {
  width: 90%;
  height: 34px;
  font-size: 15px;
  line-height: 1.1;
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.special-keys {
  position: absolute;
  top: 679px;
  left: 322px;

  width: 150px;

  display: grid;
  grid-template-columns: repeat(2, 43px);
  grid-auto-rows: 12px;

  gap: 4px;

  z-index: 5;
}

.special-keys button {
  width: 90%;
  height: 34px;
  text-align: center;
  font-size: 15px;
  line-height: 1.1;
  font-weight: 600;
  text-align: center;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}


.number-pad button {
  width: 33px;
  height: 33px;
  border-radius: 50%;
}

.sp button,
.special-keys button {
  border-radius: 6px;
}



button:active {
  box-shadow:
    inset 0 2px 4px rgba(0, 0, 0, 0.6),
    inset 0 -1px 1px rgba(255, 255, 255, 0.2);
}

.alpha-keypad button,
.function-keys button,
.sp button,
.special-keys button {
  border-radius: 6px;
}

.number-pad button {
  border-radius: 50%;
  /* number buttons = circular */
}

button:hover {
  filter: brightness(1.05);
}

/* ===============================
   REAL AIRCRAFT RUBBER BUTTON
   =============================== */
button {
  border: none;
  outline: none;

  background: linear-gradient(to bottom,
      #151414 0%,
      /* top light */
      #1c1e20 100%
      /* bottom dark */
    );

  color: #e6e6e6;
  font-family: Arial, sans-serif;
  font-weight: 600;

  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    /* top highlight */
    inset 0 -3px 5px rgba(0, 0, 0, 0.9),
    /* deep rubber */
    0 2px 3px rgba(0, 0, 0, 0.8);
  /* outer shadow */

  cursor: pointer;
}

.lsk button {
  filter: brightness(0.85);
}

.arrows button {
  filter: brightness(0.9);
}

.number-pad button {
  filter: brightness(0.95);
}

.screw {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;

  background: radial-gradient(circle at 30% 30%,
      #cfd3d6,
      #6b7176 60%,
      #2f3336 100%);

  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.6),
    inset 0 -1px 2px rgba(0, 0, 0, 0.8),
    0 1px 2px rgba(0, 0, 0, 0.9);
}

/* screw slot */
.screw::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 3px;
  width: 12px;
  height: 2px;
  background: #1a1d1f;
  border-radius: 2px;
}

/* positions */
.screw.tl {
  top: 12px;
  left: 12px;
}

.screw.tr {
  top: 12px;
  right: 12px;
}

.screw.bl {
  bottom: 12px;
  left: 12px;
}

.screw.br {
  bottom: 12px;
  right: 12px;
}

.panel-holes {
  position: absolute;
  top: 9px;
  left: 101px;
  display: flex;
  gap: 10px;
}

.panel-holes span {
  width: 44px;
  height: 15px;
  border-radius: 19px;

  background: linear-gradient(to bottom,
      #1b1f22,
      #000);

  box-shadow:
    inset 0 2px 3px rgba(0, 0, 0, 0.9),
    0 1px 0 rgba(255, 255, 255, 0.15);
}

.rubber1 {
  position: absolute;
  top: 490px;
  left: 9px;
  display: flex;
  gap: 10px;
}

.rubber1 span {
  width: 20px;
  height: 150px;
  border-radius: 19px;

  background: linear-gradient(to bottom,
      #26292c,
      #282525);

  box-shadow:
    inset 0 2px 3px rgba(40, 37, 37, 0.9),
    0 1px 0 rgba(29, 27, 27, 0.15);
}

.rubber2 {
  position: absolute;
  top: 490px;
  left: 430px;
  display: flex;
  gap: 10px;
}

.rubber2 span {
  width: 20px;
  height: 150px;
  border-radius: 19px;

  background: linear-gradient(to bottom,
      #26292c,
      #282525);

  box-shadow:
    inset 0 2px 3px rgba(40, 37, 37, 0.9),
    0 1px 0 rgba(29, 27, 27, 0.15);
}


/* ===============================
   MCDU BLINKING CURSOR
   =============================== */
.cursor {
  display: inline-block;
  margin-left: 2px;

  color: #00ff8a;

  text-shadow:
    0 0 4px rgba(0, 255, 140, 0.9),
    0 0 8px rgba(0, 255, 140, 0.6);
}

/* blink animation */
@keyframes mcdu-blink {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.cursor {
  animation: mcdu-blink 1s steps(1) infinite;
}


/* ===============================
   REAL AIRBUS SCRATCHPAD
   =============================== */
.scratchpad-line {
  position: absolute;
  bottom: 8px;
  left: 10px;

  font-family: "Courier New", monospace;
  font-size: 14px;

  color: #00ff8a;
  text-shadow:
    0 0 4px rgba(0, 255, 140, 0.8),
    0 0 8px rgba(0, 255, 140, 0.4);
}

.scratchpad-text {
  white-space: pre;
}
/* ===============================
   EXTERNAL NIGHT TOGGLE BUTTON
   =============================== */
.external-night-btn{
  position: fixed;
  right: 200px;
  top: -45px;

  width: 90px;
  height: 40px;

  border-radius: 10px;
  border: 2px solid rgba(255,255,255,0.2);

  background: linear-gradient(to bottom,#3c4045,#1c1f23);
  color: #d9d9d9;

  font-weight: 700;
  letter-spacing: 1px;

  cursor: pointer;

  box-shadow:
    inset 0 1px 2px rgba(255,255,255,0.15),
    inset 0 -3px 6px rgba(0,0,0,0.9),
    0 6px 14px rgba(0,0,0,0.65);
}

/* ON state glow */
.external-night-btn.active{
  color: #ffcc55;

  text-shadow:
    0 0 6px rgba(255,200,80,0.8),
    0 0 12px rgba(255,200,80,0.5);

  box-shadow:
    inset 0 1px 2px rgba(255,255,255,0.25),
    inset 0 -3px 6px rgba(0,0,0,0.9),
    0 0 12px rgba(255,200,80,0.45),
    0 6px 14px rgba(0,0,0,0.65);
}

/* ===============================
   NIGHT MODE (REAL FEEL)
   =============================== */
.mcdu.night-mode{
  filter: brightness(0.55) contrast(1.15);
}

/* Button backlight effect (only text glow) */
.mcdu.night-mode button{
  color: #ffcc55;

  text-shadow:
    0 0 6px rgba(255,200,80,0.8),
    0 0 12px rgba(255,200,80,0.35);
}

/* Keep rubber button body dark (only text lights) */
.mcdu.night-mode button{
  background: linear-gradient(to bottom,#2b2f33,#141619);
}
/* ===============================
   NIGHT MODE: LSK DIAGONAL LINES YELLOW
   =============================== */
.mcdu.night-mode .lsk.left button::after,
.mcdu.night-mode .lsk.right button::after{
  background: #ffcc55;
  opacity: 1;

  box-shadow:
    0 0 6px rgba(255,200,80,0.7),
    0 0 12px rgba(255,200,80,0.35);
}

.lsk button {
  font-size: 0;  
}

.mcdu.night-mode .lsk button::before {
  background: #ffcc55;
  box-shadow: 0 0 6px rgba(255,200,80,0.6);
}
/* ===============================
   REMOVE MOBILE TAP / FOCUS HIGHLIGHT
   =============================== */

button {
  -webkit-tap-highlight-color: transparent; /* Android blue box remove */
  outline: none;
}

button:focus {
  outline: none;
}

button:focus-visible {
  outline: none;
}
* {
  -webkit-tap-highlight-color: transparent;
}