static/css/terminal.css

/* ═══════════════════════════════════════════════════════════════
   HF Terminal — Skeuomorphic CRT Stylesheet
   Hand-crafted CSS. No frameworks. No compromises.
   ═══════════════════════════════════════════════════════════════ */

:root {
  --phosphor: #33ff00;
  --phosphor-dim: #1a8c00;
  --phosphor-glow: rgba(51, 255, 0, 0.6);
  --phosphor-bg: #0C0C0C;
  --screen-radius: 18px;
  --bezel-width: 24px;
  --bezel-color: #2a2a2a;
  --scanline-opacity: 0.08;
  --scanline-size: 2px;
}

:root[data-phosphor="amber"] {
  --phosphor: #ffb000;
  --phosphor-dim: #b37d00;
  --phosphor-glow: rgba(255, 176, 0, 0.6);
}

:root[data-phosphor="white"] {
  --phosphor: #e0e0e0;
  --phosphor-dim: #a0a0a0;
  --phosphor-glow: rgba(224, 224, 224, 0.5);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a1a1a;
  font-family: monospace;
}

#monitor {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: calc(100% - 48px);
  padding: 12px;
  perspective: 800px;
}

#bezel {
  position: relative;
  background: var(--bezel-color);
  border-radius: calc(var(--screen-radius) + var(--bezel-width));
  padding: var(--bezel-width);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.7),
    0 0 0 2px #1a1a1a,
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    inset 0 -1px 0 rgba(0, 0, 0, 0.4);
  width: 100%;
  max-width: 920px;
  height: 100%;
  max-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#screen {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--phosphor-bg);
  border-radius: var(--screen-radius);
  overflow: hidden;
  box-shadow:
    inset 0 0 80px rgba(0, 0, 0, 0.5),
    inset 0 0 20px rgba(0, 0, 0, 0.3),
    inset 2px 2px 20px rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.03);
}

#screen.no-curve {
  border-radius: 4px;
  box-shadow:
    inset 0 0 60px rgba(0, 0, 0, 0.4),
    inset 0 0 10px rgba(0, 0, 0, 0.2);
}

#scanlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent var(--scanline-size),
    rgba(0, 0, 0, var(--scanline-opacity)) var(--scanline-size),
    rgba(0, 0, 0, var(--scanline-opacity)) calc(var(--scanline-size) * 2)
  );
}

#scanlines.hidden {
  display: none;
}

#terminal {
  width: 100%;
  height: 100%;
  padding: 8px;
  position: relative;
  z-index: 5;
}

#terminal .xterm {
  height: 100%;
  padding: 4px;
}

#terminal .xterm-viewport {
  background-color: var(--phosphor-bg) !important;
}

#terminal .xterm-screen {
  height: 100% !important;
}

:root[data-glow="true"] #terminal .xterm-rows {
  color: var(--phosphor);
  text-shadow:
    0 0 2px var(--phosphor),
    0 0 8px var(--phosphor-glow),
    0 0 20px var(--phosphor-glow);
}

:root[data-glow="false"] #terminal .xterm-rows {
  color: var(--phosphor);
  text-shadow: none;
}

#terminal .xterm-selection div {
  background-color: rgba(51, 255, 0, 0.25) !important;
}

#terminal .xterm-viewport::-webkit-scrollbar {
  width: 6px;
}

#terminal .xterm-viewport::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.3);
}

#terminal .xterm-viewport::-webkit-scrollbar-thumb {
  background: var(--phosphor-dim);
  border-radius: 3px;
}

#terminal .xterm-viewport::-webkit-scrollbar-thumb:hover {
  background: var(--phosphor);
}

#monitor-base {
  width: 100%;
  max-width: 920px;
  display: flex;
  justify-content: center;
}

#monitor-foot {
  width: 40%;
  height: 16px;
  background: linear-gradient(to bottom, #333, #222);
  border-radius: 0 0 6px 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

#controls {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 48px;
  background: #1e1e1e;
  border-top: 1px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 100;
  font-size: 12px;
  color: #888;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  user-select: none;
}

.control-group span {
  font-family: monospace;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 10px;
}

.control-group select {
  background: #2a2a2a;
  color: #ccc;
  border: 1px solid #444;
  border-radius: 3px;
  padding: 2px 6px;
  font-family: monospace;
  font-size: 11px;
  cursor: pointer;
  outline: none;
}

.control-group select:focus {
  border-color: var(--phosphor-dim);
}

.control-group input[type="checkbox"] {
  appearance: none;
  width: 28px;
  height: 16px;
  background: #333;
  border-radius: 8px;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
}

.control-group input[type="checkbox"]::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background: #666;
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.control-group input[type="checkbox"]:checked {
  background: var(--phosphor-dim);
}

.control-group input[type="checkbox"]:checked::after {
  transform: translateX(12px);
  background: var(--phosphor);
}

@keyframes flicker {
  0%   { opacity: 1; }
  3%   { opacity: 0.97; }
  6%   { opacity: 1; }
  7%   { opacity: 0.98; }
  9%   { opacity: 1; }
  50%  { opacity: 1; }
  51%  { opacity: 0.99; }
  100% { opacity: 1; }
}

#screen {
  animation: flicker 8s infinite;
}

@media (prefers-reduced-motion: reduce) {
  #screen { animation: none; }
}

@media (max-width: 768px) {
  #bezel {
    padding: 12px;
    border-radius: calc(var(--screen-radius) + 12px);
    max-height: none;
  }
  #screen { border-radius: 10px; }
  #monitor-foot { width: 60%; }
  #controls {
    gap: 10px;
    padding: 0 8px;
    flex-wrap: wrap;
    height: auto;
    min-height: 48px;
    padding-top: 6px;
    padding-bottom: 6px;
  }
  .control-group span { font-size: 9px; }
}

@media (max-width: 480px) {
  #bezel {
    padding: 6px;
    border-radius: calc(var(--screen-radius) + 6px);
  }
  #screen { border-radius: 8px; }
  #monitor-foot { display: none; }
}