@import url("https://fonts.googleapis.com/css2?family=VT323&display=swap");

/* ============================================================
   ORFEU // TERMINAL CRT
   Estética: monitor de tubo fosforado verde, sinal degradado.
   ============================================================ */

:root {
  --bg: #020b05;
  --phosphor: #4cff4c;
  --phosphor-bright: #9dffb6;
  --phosphor-dim: #2bbf5a;
  --amber: #ffb454;
  --glow: rgba(76, 255, 76, 0.55);
  --glow-soft: rgba(76, 255, 76, 0.20);
  --scanline: rgba(0, 0, 0, 0.30);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  /* leve curvatura de brilho do centro pras bordas escuras */
  background: radial-gradient(ellipse at center, #05160b 0%, #020b05 70%, #000000 100%);
  font-family: "VT323", monospace;
  color: var(--phosphor);
  min-height: 100vh;
  overflow-x: hidden;
  letter-spacing: 0.4px;
  /* brilho de fósforo padrão em todo texto */
  text-shadow:
    0 0 1px var(--glow),
    0 0 7px var(--glow-soft);
}

/* ------------------------------------------------------------
   CONTEÚDO DA TELA
   ------------------------------------------------------------ */
.crt {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 100vh;
  padding: clamp(16px, 4vw, 48px);
  /* ligar a tela: varredura de power-on */
  animation: power-on 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) 1;
  transform-origin: center;
}

@keyframes power-on {
  0% {
    transform: scale(1.06, 0.004);
    filter: brightness(7) blur(1.5px);
    opacity: 0;
  }
  35% {
    transform: scale(1, 0.02);
    filter: brightness(4);
    opacity: 1;
  }
  60% {
    transform: scale(1, 1);
    filter: brightness(2);
  }
  100% {
    transform: scale(1, 1);
    filter: brightness(1);
    opacity: 1;
  }
}

.terminal {
  max-width: 900px;
  margin: 0 auto;
  /* tremulação sutil de brilho do tubo, depois do power-on */
  animation: flicker 5.5s infinite;
  animation-delay: 1.4s;
}

@keyframes flicker {
  0%,
  100% { opacity: 0.98; }
  7%   { opacity: 0.92; }
  9%   { opacity: 0.99; }
  41%  { opacity: 0.97; }
  43%  { opacity: 0.86; }
  45%  { opacity: 0.99; }
  82%  { opacity: 0.95; }
  84%  { opacity: 0.99; }
}

/* ------------------------------------------------------------
   CAMADAS DE OVERLAY (fixas, não capturam clique)
   z: ruído < vinheta < scanlines < barra de varredura
   ------------------------------------------------------------ */

/* ruído / granulado de sinal */
.crt::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9996;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 0.45s steps(3) infinite;
}

@keyframes grain {
  0%   { transform: translate(0, 0); }
  33%  { transform: translate(-2%, 1%); }
  66%  { transform: translate(1%, -2%); }
  100% { transform: translate(0, 0); }
}

/* barra de varredura que desce lentamente */
.crt::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(140, 255, 170, 0) 0%,
    rgba(140, 255, 170, 0.06) 50%,
    rgba(140, 255, 170, 0) 100%
  );
  background-size: 100% 26%;
  background-repeat: no-repeat;
  animation: scanbar 8s linear infinite;
}

@keyframes scanbar {
  0%   { background-position: 0 -30%; }
  100% { background-position: 0 130%; }
}

/* scanlines horizontais */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    var(--scanline) 3px,
    var(--scanline) 4px
  );
}

/* vinheta + escurecimento das bordas (vidro curvo) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9997;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0) 52%,
    rgba(0, 0, 0, 0.55) 100%
  );
  box-shadow: inset 0 0 140px 28px rgba(0, 0, 0, 0.9);
}

/* ------------------------------------------------------------
   TIPOGRAFIA DO TERMINAL
   ------------------------------------------------------------ */
pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: clamp(16px, 2.4vw, 22px);
  line-height: 1.35;
  margin: 0 0 0.8em;
}

/* linha de entrada de comando */
.input-line {
  display: flex;
  align-items: center;
  font-size: clamp(16px, 2.4vw, 22px);
}

.prompt {
  margin-right: 8px;
  color: var(--phosphor-bright);
  text-shadow:
    0 0 2px var(--phosphor),
    0 0 9px var(--glow);
}

input {
  background: transparent;
  border: none;
  color: var(--phosphor);
  font-family: inherit;
  font-size: inherit;
  outline: none;
  flex: 1;
  min-width: 0;
  caret-color: var(--phosphor-bright);
  text-shadow: inherit;
}

/* ------------------------------------------------------------
   LINKS
   ------------------------------------------------------------ */
.return-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--amber);
  text-decoration: none;
  text-shadow:
    0 0 2px rgba(255, 180, 84, 0.7),
    0 0 9px rgba(255, 180, 84, 0.3);
  transition: filter 0.15s ease, letter-spacing 0.15s ease;
}

.return-link:hover,
.return-link:focus-visible {
  filter: brightness(1.4);
  letter-spacing: 1px;
  outline: none;
}

/* bloco oculto (mantido discreto de propósito) */
.hidden-link {
  display: inline-block;
  margin-top: 18px;
  color: #2f6b2f;
  text-decoration: none;
  user-select: none;
  text-shadow: none;
}

/* ------------------------------------------------------------
   ACESSIBILIDADE: respeitar quem prefere menos movimento
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  .crt,
  .terminal,
  .crt::before,
  .crt::after {
    animation: none !important;
  }
}