/*
 * Game Theme for Reveal.js
 * Inspirado em jogos clássicos de 8-bit e arcades.
 * VERSÃO COM FONTES AJUSTADAS
 */

:root {
  --background-color: #1a1a2d;
  --main-font: 'VT323', monospace;
  --heading-font: 'Press Start 2P', sans-serif;
  --text-color: #e0e0e0;
  --cyan: #00ffff;
  --magenta: #ff00ff;
  --yellow: #ffff00;
  --green: #00ff00;
  --red: #ff5555;
  --border-color: var(--cyan);
}

/*********************************************
 * GLOBAL STYLES
 *********************************************/
.reveal {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: var(--main-font);
  font-size: 1.8rem;
}

.reveal ::selection {
  color: var(--background-color);
  background: var(--yellow);
  text-shadow: none;
}

/*********************************************
 * HEADINGS
 *********************************************/
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: var(--heading-font);
  color: var(--yellow);
  text-shadow: 2px 2px 0px var(--magenta);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 25px;
}

.reveal h1 {
  font-size: 2.5em;
}

.reveal h2 {
  font-size: 1.5em;
}

.reveal h3 {
  font-size: 1.2em;
}

.problem-section h4, .compact-solution h4 {
    font-size: 1em;
    text-shadow: none;
    margin-bottom: 15px;
}

.compact-solution h4 {
    color: var(--green);
}

/*********************************************
 * TEXT & LINKS
 *********************************************/
.reveal p, .reveal li, .reveal ol, .reveal ul {
  line-height: 1.4;
}

.reveal a {
  color: var(--cyan);
  text-decoration: none;
}

.reveal .press-start {
    font-family: var(--heading-font);
    color: var(--green);
    font-size: 0.8em;
    animation: blink 1.5s infinite step-end;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/*********************************************
 * THEMED SECTIONS
 *********************************************/
.lore-section,
.math-section,
.problem-section,
.compact-solution {
  border: 2px solid var(--border-color);
  padding: 15px;
  margin-top: 15px;
  background-color: rgba(0, 255, 255, 0.05);
  box-shadow: inset 0 0 10px rgba(0, 255, 255, 0.2);
}

.lore-label {
    font-family: var(--heading-font);
    background-color: var(--border-color);
    color: var(--background-color);
    padding: 5px 10px;
    display: inline-block;
    margin-bottom: 15px;
    font-size: 0.8em;
}

.game-interp {
    margin-top: 20px;
    border-left: 4px solid var(--yellow);
    padding-left: 15px;
    font-style: italic;
}

/*********************************************
 * BACKGROUND EFFECTS
 *********************************************/
.background-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.1;
  z-index: -1;
}

.ghost {
    position: fixed;
    width: 30px;
    height: 30px;
    background-color: var(--magenta);
    border-radius: 15px 15px 0 0;
    opacity: 0.2;
    z-index: -1;
    animation: float-across 20s linear infinite;
    top: 20%;
}

.ghost:nth-of-type(2) {
    background-color: var(--cyan);
    animation-duration: 30s;
    animation-delay: -10s;
    top: 60%;
}

@keyframes float-across {
    from { transform: translateX(-100%); }
    to { transform: translateX(100vw); }
}


/*********************************************
 * CONTROLS
 *********************************************/
.controls-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.control-button {
    font-family: var(--heading-font);
    background-color: transparent;
    border: 3px solid var(--yellow);
    color: var(--yellow);
    padding: 10px 20px;
    font-size: 0.7em;
    cursor: pointer;
}

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 200px; height: 10px;
  background: var(--background-color);
  border: 2px solid var(--border-color);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px;
  background: var(--yellow); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px;
  background: var(--yellow); cursor: pointer; border: none;
}

/*********************************************
 * REVEAL.JS CONTROLS OVERRIDE
 *********************************************/
.reveal .controls .navigate-left,
.reveal .controls .navigate-right,
.reveal .controls .navigate-up,
.reveal .controls .navigate-down {
  color: var(--cyan);
  opacity: 0.5;
}

.reveal .progress {
  color: var(--cyan);
  height: 5px;
}