/* ── RRRco Secure Terminal — Amber Phosphor CRT ── */

:root {
  --bg: #0a0a0a;
  --fg: #ffb000;
  --fg-dim: #996a00;
  --fg-glow: rgba(255, 176, 0, 0.5);
  --font: 'Courier New', Courier, monospace;
  --font-size: 15px;
  --line-height: 1.35;
  --padding: 20px;
  --scanline-opacity: 0.035;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  overflow: hidden;
}

body {
  font-family: var(--font);
  font-size: var(--font-size);
  line-height: var(--line-height);
  color: var(--fg);
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: unset;
}

/* ── CRT Scanline Overlay ── */

#crt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, var(--scanline-opacity)) 0px,
    rgba(0, 0, 0, var(--scanline-opacity)) 1px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
  z-index: 100;
}

/* ── Screen curvature vignette ── */

#crt-overlay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    transparent 60%,
    rgba(0, 0, 0, 0.45) 100%
  );
  pointer-events: none;
}

/* ── Terminal ── */

#terminal {
  height: 100vh;
  padding: var(--padding);
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  position: relative;
  scroll-behavior: auto;
}

#terminal::-webkit-scrollbar {
  display: none;
}

/* ── Output Lines ── */

.line {
  text-shadow: 0 0 4px var(--fg-glow);
  min-height: calc(var(--font-size) * var(--line-height));
}

/* ── Input Line ── */

.input-line {
  text-shadow: 0 0 4px var(--fg-glow);
  min-height: calc(var(--font-size) * var(--line-height));
  display: flex;
  align-items: baseline;
}

.input-line .prompt {
  white-space: pre;
}

.input-line .input-text {
  white-space: pre;
}

/* ── Blinking Cursor ── */

.cursor {
  display: inline-block;
  width: 0.6em;
  height: 1.1em;
  background: var(--fg);
  vertical-align: text-bottom;
  margin-left: 1px;
  box-shadow: 0 0 6px var(--fg-glow);
  animation: blink 1s step-end infinite;
}

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

/* ── Hidden Input (keystroke capture) ── */

.hidden-input {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  width: 1px;
  height: 1px;
}

/* ── Mobile Block ── */

.mobile-block {
  display: none;
  font-family: var(--font);
  font-size: var(--font-size);
  color: var(--fg);
  text-shadow: 0 0 4px var(--fg-glow);
  text-align: center;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  line-height: 1.8;
}

@media (max-width: 599px) {
  #terminal,
  #crt-overlay {
    display: none;
  }
  .mobile-block {
    display: block;
  }
}