/* ============================================================
   CRIPTO-NOTES: FIREWALL — Estils ciberpunk / synthwave
   Paleta: magenta #ff00ff, cian #00ffff, fons fosc #05010f
   ============================================================ */

:root {
  --magenta: #ff00ff;
  --magenta-soft: #ff44dd;
  --cyan: #00ffff;
  --cyan-soft: #66ffff;
  --bg-0: #02000a;
  --bg-1: #0a0228;
  --bg-2: #1a0540;
  --frame: rgba(255, 0, 255, 0.4);
  --green: #1aff8a;
  --red: #ff2266;
  --yellow: #ffea00;
  --text: #e0e0ff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100vh;
  height: 100dvh;            /* dinàmic: respecta la barra del navegador mòbil */
  background: var(--bg-0);
  color: var(--text);
  font-family: 'Courier New', 'Consolas', monospace;
  overflow: hidden;          /* mai scroll: tot càpiga sempre */
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(6px, 1.2vh, 18px);
  position: relative;
}

/* ------------------------------------------------------------
   FONS SYNTHWAVE: gradient + graella en perspectiva + sol
   ------------------------------------------------------------ */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(ellipse at 50% 0%, #2a0560 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 45%, var(--bg-2) 100%);
  overflow: hidden;
}

.grid-bg::before,
.grid-bg::after {
  content: '';
  position: absolute;
  left: -50%;
  width: 200%;
  height: 60%;
  pointer-events: none;
}

.grid-bg::before {
  bottom: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 79px,
      rgba(255, 0, 255, 0.55) 79px,
      rgba(255, 0, 255, 0.55) 80px
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 79px,
      rgba(0, 255, 255, 0.55) 79px,
      rgba(0, 255, 255, 0.55) 80px
    );
  transform: perspective(360px) rotateX(62deg);
  transform-origin: top center;
  animation: gridmove 5s linear infinite;
  filter: drop-shadow(0 0 6px var(--magenta));
}

.sun-glow {
  position: fixed;
  z-index: -2;
  left: 50%;
  top: 18%;
  transform: translateX(-50%);
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, #ff00bb 0%, #6a0088 30%, transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
  opacity: 0.45;
  pointer-events: none;
}

@keyframes gridmove {
  from { background-position: 0 0; }
  to   { background-position: 0 80px; }
}

.scanlines {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.0) 0,
    rgba(0, 0, 0, 0.0) 2px,
    rgba(0, 0, 0, 0.18) 2px,
    rgba(0, 0, 0, 0.18) 3px
  );
  opacity: 0.5;
  mix-blend-mode: multiply;
}

/* ------------------------------------------------------------
   PANTALLES (només una activa)
   ------------------------------------------------------------ */
.screen {
  display: none;
  width: 100%;
  max-width: 1080px;
  flex: 1 1 0;
  min-height: 0;
  max-height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 2vh, 22px);
  padding: clamp(8px, 1.5vh, 22px) 12px;
}
.screen.active { display: flex; }

#screen-game.active,
#screen-levels.active {
  justify-content: flex-start;
}
#screen-game.active {
  max-width: 1280px;
  gap: clamp(6px, 1vh, 14px);
}

/* ------------------------------------------------------------
   TIPOGRAFIA NEÓ
   ------------------------------------------------------------ */
.neon-title {
  font-family: 'Courier New', monospace;
  font-weight: 900;
  letter-spacing: 4px;
  text-align: center;
  line-height: 1.1;
  text-transform: uppercase;
}

.neon-title.huge { font-size: clamp(1.6rem, 5vw + 0.5rem, 4.4rem); }
.neon-title.small { font-size: clamp(1.05rem, 2.4vw + 0.2rem, 2rem); margin-bottom: 6px; }

.neon-title .cyan {
  color: var(--cyan);
  text-shadow:
    0 0 6px var(--cyan),
    0 0 16px var(--cyan),
    0 0 32px rgba(0, 255, 255, 0.7);
}
.neon-title .magenta {
  color: var(--magenta);
  text-shadow:
    0 0 6px var(--magenta),
    0 0 16px var(--magenta),
    0 0 32px rgba(255, 0, 255, 0.7);
}

.glitch { position: relative; display: inline-block; }
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0; right: 0;
  pointer-events: none;
}
.glitch::before {
  color: var(--magenta);
  text-shadow: 2px 0 var(--magenta);
  animation: glitchA 3.2s infinite linear alternate;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}
.glitch::after {
  color: var(--cyan);
  text-shadow: -2px 0 var(--cyan);
  animation: glitchB 4.1s infinite linear alternate;
  clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
}
@keyframes glitchA {
  0%,90%,100% { transform: translate(0, 0); }
  92% { transform: translate(-3px, 1px); }
  96% { transform: translate(2px, -1px); }
}
@keyframes glitchB {
  0%,80%,100% { transform: translate(0, 0); }
  85% { transform: translate(2px, -1px); }
  92% { transform: translate(-3px, 2px); }
}

.subtitle {
  color: var(--cyan-soft);
  letter-spacing: clamp(1px, 0.4vw, 3px);
  font-size: clamp(0.72rem, 1vw + 0.2rem, 0.95rem);
  opacity: 0.8;
  text-align: center;
}

.boot-line {
  color: var(--green);
  font-size: clamp(0.7rem, 0.9vw, 0.85rem);
  letter-spacing: 2px;
  margin-bottom: 6px;
  opacity: 0.85;
  text-align: center;
}

.footer-credits {
  font-size: clamp(0.62rem, 0.8vw, 0.75rem);
  letter-spacing: clamp(2px, 0.6vw, 4px);
  color: var(--magenta-soft);
  opacity: 0.7;
  text-align: center;
  margin-top: 4px;
}

.cyan { color: var(--cyan); }
.magenta { color: var(--magenta); }

/* ------------------------------------------------------------
   FRAMES
   ------------------------------------------------------------ */
.landing-frame,
.card-frame {
  width: 100%;
  max-width: 720px;
  max-height: 100%;
  overflow-y: auto;
  padding: clamp(16px, 3vh, 36px) clamp(14px, 3vw, 32px);
  border: 2px solid var(--frame);
  background: rgba(8, 2, 28, 0.78);
  box-shadow:
    0 0 18px rgba(255, 0, 255, 0.45),
    0 0 60px rgba(0, 255, 255, 0.12) inset;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(12px, 2vh, 22px);
  position: relative;
}
.card-frame.wide { max-width: 980px; }

.landing-frame::before,
.card-frame::before {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(0, 255, 255, 0.25);
  pointer-events: none;
}

/* ------------------------------------------------------------
   BOTONS CIBER
   ------------------------------------------------------------ */
.cyber-btn {
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(0.85rem, 1vw + 0.3rem, 1.05rem);
  letter-spacing: clamp(1px, 0.4vw, 3px);
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(0, 255, 255, 0.06);
  border: 2px solid var(--cyan);
  padding: clamp(10px, 1.5vh, 14px) clamp(14px, 2vw, 26px);
  cursor: pointer;
  position: relative;
  transition: all 0.18s ease;
  text-shadow: 0 0 4px var(--cyan);
  box-shadow:
    0 0 8px rgba(0, 255, 255, 0.45),
    0 0 24px rgba(0, 255, 255, 0.18) inset;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.cyber-btn:hover {
  color: var(--bg-0);
  background: var(--cyan);
  box-shadow: 0 0 24px var(--cyan);
  transform: translateY(-2px);
  text-shadow: none;
}
.cyber-btn:active { transform: translateY(0); }

.cyber-btn.primary {
  color: var(--magenta);
  border-color: var(--magenta);
  background: rgba(255, 0, 255, 0.08);
  text-shadow: 0 0 4px var(--magenta);
  box-shadow:
    0 0 8px rgba(255, 0, 255, 0.55),
    0 0 24px rgba(255, 0, 255, 0.22) inset;
}
.cyber-btn.primary:hover {
  color: var(--bg-0);
  background: var(--magenta);
  box-shadow: 0 0 28px var(--magenta);
}

.cyber-btn.small {
  padding: clamp(6px, 1.2vh, 10px) clamp(10px, 1.6vw, 18px);
  font-size: clamp(0.7rem, 0.9vw + 0.2rem, 0.85rem);
  letter-spacing: 2px;
}
.cyber-btn.danger {
  color: var(--red);
  border-color: var(--red);
  text-shadow: 0 0 4px var(--red);
  box-shadow: 0 0 8px rgba(255, 34, 102, 0.5);
  background: rgba(255, 34, 102, 0.05);
}
.cyber-btn.danger:hover {
  background: var(--red);
  color: white;
  box-shadow: 0 0 24px var(--red);
}

.menu-buttons {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 14px;
}

.bottom-bar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.bottom-bar.centered { justify-content: center; }

/* ------------------------------------------------------------
   TUTORIAL
   ------------------------------------------------------------ */
.tutorial-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
  max-width: 600px;
}
.tutorial-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(8px, 1.2vh, 12px) clamp(10px, 1.5vw, 14px);
  border-left: 3px solid var(--cyan);
  background: rgba(0, 255, 255, 0.04);
  font-size: clamp(0.78rem, 1vh + 0.3rem, 0.95rem);
  line-height: 1.5;
}
.tutorial-list li:nth-child(even) {
  border-left-color: var(--magenta);
  background: rgba(255, 0, 255, 0.04);
}
.tutorial-list .step {
  font-weight: 900;
  color: var(--magenta);
  min-width: 32px;
  font-size: 1.3rem;
  text-shadow: 0 0 6px var(--magenta);
}
.tutorial-list li:nth-child(even) .step { color: var(--cyan); text-shadow: 0 0 6px var(--cyan); }

kbd {
  display: inline-block;
  padding: 4px 8px;
  margin: 0 3px;
  border: 1px solid var(--cyan);
  background: rgba(0, 255, 255, 0.08);
  color: var(--cyan);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.85rem;
  box-shadow: 0 0 6px rgba(0, 255, 255, 0.4);
}

/* ------------------------------------------------------------
   GRAELLA DE NIVELLS
   ------------------------------------------------------------ */
.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(clamp(72px, 10vw, 110px), 1fr));
  gap: clamp(6px, 1vw, 14px);
  width: 100%;
  margin: 4px 0;
}
.level-card {
  position: relative;
  padding: clamp(8px, 1.4vh, 18px) clamp(4px, 1vw, 8px);
  border: 2px solid;
  background: rgba(0, 0, 0, 0.4);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.level-card .lvl-num {
  font-size: clamp(1rem, 1.5vw + 0.4rem, 1.6rem);
  font-weight: 900;
  letter-spacing: 2px;
}
.level-card .lvl-tag {
  font-size: clamp(0.55rem, 0.8vw, 0.7rem);
  letter-spacing: 2px;
  opacity: 0.75;
}
.level-card.locked {
  border-color: #444;
  color: #555;
  cursor: not-allowed;
  background: rgba(20, 20, 30, 0.5);
}
.level-card.locked .lvl-num { font-size: clamp(1.2rem, 1.8vw + 0.4rem, 1.8rem); }
.level-card.tier-1 { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 8px rgba(0,255,255,0.3); }
.level-card.tier-2 { border-color: var(--green); color: var(--green); box-shadow: 0 0 8px rgba(26,255,138,0.3); }
.level-card.tier-3 { border-color: var(--yellow); color: var(--yellow); box-shadow: 0 0 8px rgba(255,234,0,0.3); }
.level-card.tier-4 { border-color: var(--magenta); color: var(--magenta); box-shadow: 0 0 8px rgba(255,0,255,0.4); }
.level-card.tier-5 { border-color: var(--red); color: var(--red); box-shadow: 0 0 10px rgba(255,34,102,0.5); }
.level-card.completed::after {
  content: '✓';
  position: absolute;
  top: 4px;
  right: 8px;
  color: var(--green);
  font-weight: 900;
  text-shadow: 0 0 6px var(--green);
}
.level-card:not(.locked):hover {
  transform: translateY(-3px);
  filter: brightness(1.5);
}

/* ------------------------------------------------------------
   PANTALLA DE JOC: HUD
   ------------------------------------------------------------ */
.hud {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: 10px;
  padding: clamp(6px, 1.2vh, 12px) clamp(10px, 1.5vw, 14px);
  border: 2px solid var(--frame);
  background: rgba(8, 2, 28, 0.85);
  box-shadow: 0 0 12px rgba(255, 0, 255, 0.3);
  flex-shrink: 0;
}
.hud-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.hud-block.center { align-items: center; }
.hud-block.right { align-items: flex-end; }
.hud-label {
  font-size: clamp(0.6rem, 0.9vw, 0.75rem);
  letter-spacing: 2px;
  color: var(--cyan-soft);
  opacity: 0.75;
}
.hud-value {
  font-size: clamp(0.95rem, 1.2vw + 0.3rem, 1.4rem);
  font-weight: 900;
  letter-spacing: 2px;
}
.hud-value.cyan { color: var(--cyan); text-shadow: 0 0 8px var(--cyan); }
.hud-value.magenta { color: var(--magenta); text-shadow: 0 0 8px var(--magenta); }
.hud-value.lives {
  font-size: 1.3rem;
  letter-spacing: 4px;
  text-shadow: 0 0 8px var(--green);
}

/* ------------------------------------------------------------
   PANTALLA DE JOC: CANVAS + OVERLAY
   ------------------------------------------------------------ */
.canvas-wrapper {
  position: relative;
  width: 100%;
  max-width: 1280px;
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--cyan);
  background: rgba(2, 0, 12, 0.85);
  box-shadow: 0 0 24px rgba(0, 255, 255, 0.4);
  overflow: hidden;
}

#game-canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  image-rendering: optimizeQuality;
}

.overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 6px;
  color: var(--magenta);
  text-shadow: 0 0 16px var(--magenta);
  opacity: 0;
  transition: opacity 0.2s;
}
.overlay.show { opacity: 1; }

@keyframes shake {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-7px, 4px); }
  25% { transform: translate(8px, -3px); }
  40% { transform: translate(-5px, -6px); }
  60% { transform: translate(6px, 5px); }
  80% { transform: translate(-3px, 2px); }
}
.shake { animation: shake 0.45s ease-in-out; }

.canvas-wrapper.flash-red::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 34, 102, 0.35);
  animation: flashout 0.45s forwards;
  pointer-events: none;
}
@keyframes flashout {
  from { opacity: 1; }
  to   { opacity: 0; }
}

/* ------------------------------------------------------------
   TECLAT MECÀNIC
   ------------------------------------------------------------ */
.keyboard {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: clamp(4px, 0.8vw, 10px);
  width: 100%;
  max-width: 1280px;
  flex-shrink: 0;
}
.key-btn {
  font-family: inherit;
  cursor: pointer;
  padding: clamp(6px, 1.4vh, 14px) clamp(2px, 0.8vw, 6px);
  border: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(0, 255, 255, 0.18) 0%, rgba(0, 0, 0, 0.5) 100%);
  color: var(--cyan);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
  transition: transform 0.06s ease, box-shadow 0.12s ease, background 0.12s;
  box-shadow:
    0 4px 0 rgba(0, 100, 100, 0.7),
    0 0 12px rgba(0, 255, 255, 0.5),
    0 0 24px rgba(0, 255, 255, 0.18) inset;
  text-shadow: 0 0 6px var(--cyan);
  user-select: none;
}
.key-btn .note {
  font-size: clamp(0.85rem, 1.3vw + 0.4rem, 1.6rem);
  font-weight: 900;
  letter-spacing: clamp(1px, 0.4vw, 3px);
}
.key-btn .key {
  font-size: clamp(0.55rem, 0.7vw, 0.7rem);
  letter-spacing: 2px;
  opacity: 0.7;
  border: 1px solid currentColor;
  padding: 1px 6px;
  border-radius: 3px;
}
.key-btn:nth-child(even) {
  border-color: var(--magenta);
  color: var(--magenta);
  background: linear-gradient(180deg, rgba(255, 0, 255, 0.18) 0%, rgba(0, 0, 0, 0.5) 100%);
  box-shadow:
    0 4px 0 rgba(120, 0, 120, 0.7),
    0 0 12px rgba(255, 0, 255, 0.5),
    0 0 24px rgba(255, 0, 255, 0.18) inset;
  text-shadow: 0 0 6px var(--magenta);
}

.key-btn:hover { filter: brightness(1.25); }
.key-btn.pressed,
.key-btn:active {
  transform: translateY(4px);
  box-shadow:
    0 0 0 rgba(0, 100, 100, 0.7),
    0 0 24px var(--cyan),
    0 0 36px var(--cyan) inset;
  background: rgba(0, 255, 255, 0.4);
  color: var(--bg-0);
  text-shadow: none;
}
.key-btn:nth-child(even).pressed,
.key-btn:nth-child(even):active {
  box-shadow:
    0 0 0 rgba(120, 0, 120, 0.7),
    0 0 24px var(--magenta),
    0 0 36px var(--magenta) inset;
  background: rgba(255, 0, 255, 0.4);
}

/* ------------------------------------------------------------
   MODAL
   ------------------------------------------------------------ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(2, 0, 12, 0.86);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  animation: fadein 0.2s ease;
}
.modal.hidden { display: none; }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }

.modal-card {
  background: rgba(8, 2, 28, 0.95);
  border: 2px solid var(--magenta);
  padding: clamp(18px, 3vh, 30px) clamp(20px, 3vw, 36px);
  max-width: min(480px, 92vw);
  max-height: 90dvh;
  overflow-y: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 2vh, 18px);
  box-shadow: 0 0 36px var(--magenta);
}
.modal-card p { font-size: 1rem; line-height: 1.6; color: var(--cyan-soft); }
.modal-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ------------------------------------------------------------
   RESPONSIVE — la majoria del dimensionament ja és fluid amb clamp()
   ------------------------------------------------------------ */
@media (max-width: 720px) {
  .hud { gap: 4px; }
  .hud-block, .hud-block.center, .hud-block.right { align-items: center; text-align: center; }
  .menu-buttons { flex-direction: column; width: 100%; }
  .menu-buttons .cyber-btn { width: 100%; }
}

/* Quan la finestra és molt curta, també compactem encara més */
@media (max-height: 600px) {
  .neon-title.huge { font-size: clamp(1.4rem, 4vw, 2.2rem); }
  .footer-credits { display: none; }
  .boot-line { display: none; }
}