/* ═══════════════════════════════════════════════════════════
   PHOSPHOR CRT TERMINAL
   Aesthetic: 1980s server-room phosphor monitor
   P1 green primary, P3 amber accents
   ═══════════════════════════════════════════════════════════ */

/* ═══ Self-hosted Fira Code ════════════════════════════════ */

@font-face {
  font-family: 'Fira Code';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('../fonts/FiraCode-Light.woff2') format('woff2');
}

@font-face {
  font-family: 'Fira Code';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/FiraCode-Regular.woff2') format('woff2');
}

@font-face {
  font-family: 'Fira Code';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/FiraCode-Bold.woff2') format('woff2');
}

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

:root {
  /* ── Phosphor greens ── */
  --p1:          #33ff33;
  --p1-dim:      #20cc20;
  --p1-faint:    #0a660a;
  --p1-glow:     rgba(51, 255, 51, 0.4);
  --p1-bloom:    rgba(51, 255, 51, 0.15);

  /* ── Amber accents ── */
  --amber:       #ffb000;
  --amber-dim:   #cc8d00;
  --amber-glow:  rgba(255, 176, 0, 0.35);

  /* ── Surface ── */
  --bg:          #0a0a0a;
  --bg-screen:   #050505;
  --border:      #1a3a1a;

  /* ── Semantics ── */
  --text:        var(--p1-dim);
  --text-bright: var(--p1);
  --heading:     var(--amber);
  --accent:      var(--p1);
  --highlight:   var(--amber-dim);
  --comment:     var(--p1-faint);
  --prompt-user: var(--p1);
  --prompt-sep:  var(--p1-faint);
  --prompt-path: var(--amber);
  --prompt-dollar: var(--p1-dim);
  --link:        var(--amber);
  --error:       #ff4444;
}

/* ═══ Theme: Amber ═════════════════════════════════════════ */

[data-theme="amber"] {
  --p1:          #ffb000;
  --p1-dim:      #cc8d00;
  --p1-faint:    #664700;
  --p1-glow:     rgba(255, 176, 0, 0.4);
  --p1-bloom:    rgba(255, 176, 0, 0.15);

  --amber:       #ffe0a0;
  --amber-dim:   #ffc860;
  --amber-glow:  rgba(255, 224, 160, 0.35);

  --border:      #3a2a0a;

  --text:        var(--p1-dim);
  --text-bright: var(--p1);
  --heading:     var(--amber);
  --accent:      var(--p1);
  --highlight:   var(--amber-dim);
  --comment:     var(--p1-faint);
  --prompt-user: var(--p1);
  --prompt-sep:  var(--p1-faint);
  --prompt-path: var(--amber);
  --prompt-dollar: var(--p1-dim);
  --link:        var(--amber);
}

/* ═══ Theme: Blue ══════════════════════════════════════════ */

[data-theme="blue"] {
  --p1:          #5599ff;
  --p1-dim:      #3a7adf;
  --p1-faint:    #1a3a6f;
  --p1-glow:     rgba(85, 153, 255, 0.4);
  --p1-bloom:    rgba(85, 153, 255, 0.15);

  --amber:       #88ccff;
  --amber-dim:   #66aaee;
  --amber-glow:  rgba(136, 204, 255, 0.35);

  --border:      #0a1a3a;

  --text:        var(--p1-dim);
  --text-bright: var(--p1);
  --heading:     var(--amber);
  --accent:      var(--p1);
  --highlight:   var(--amber-dim);
  --comment:     var(--p1-faint);
  --prompt-user: var(--p1);
  --prompt-sep:  var(--p1-faint);
  --prompt-path: var(--amber);
  --prompt-dollar: var(--p1-dim);
  --link:        var(--amber);
}

/* ═══ Theme: High Contrast ═════════════════════════════════ */

[data-theme="high-contrast"] {
  --p1:          #ffffff;
  --p1-dim:      #f0f0f0;
  --p1-faint:    #888888;
  --p1-glow:     rgba(255, 255, 255, 0.3);
  --p1-bloom:    rgba(255, 255, 255, 0.1);

  --amber:       #ffff00;
  --amber-dim:   #ffdd00;
  --amber-glow:  rgba(255, 255, 0, 0.35);

  --bg:          #000000;
  --bg-screen:   #000000;
  --border:      #555555;

  --text:        var(--p1-dim);
  --text-bright: var(--p1);
  --heading:     var(--amber);
  --accent:      var(--p1);
  --highlight:   var(--amber-dim);
  --comment:     var(--p1-faint);
  --prompt-user: var(--p1);
  --prompt-sep:  var(--p1-faint);
  --prompt-path: var(--amber);
  --prompt-dollar: var(--p1-dim);
  --link:        var(--amber);
  --error:       #ff4444;
}

/* ═══ Theme: Colorblind (Deuteranopia-safe) ════════════════ */

[data-theme="colorblind"] {
  --p1:          #56b4e9;
  --p1-dim:      #4898c8;
  --p1-faint:    #245a78;
  --p1-glow:     rgba(86, 180, 233, 0.4);
  --p1-bloom:    rgba(86, 180, 233, 0.15);

  --amber:       #e69f00;
  --amber-dim:   #cc8b00;
  --amber-glow:  rgba(230, 159, 0, 0.35);

  --border:      #1a2a3a;

  --text:        var(--p1-dim);
  --text-bright: var(--p1);
  --heading:     var(--amber);
  --accent:      var(--p1);
  --highlight:   var(--amber-dim);
  --comment:     var(--p1-faint);
  --prompt-user: var(--p1);
  --prompt-sep:  var(--p1-faint);
  --prompt-path: var(--amber);
  --prompt-dollar: var(--p1-dim);
  --link:        var(--amber);
}

html, body {
  height: 100%;
  background: #000;
  color: var(--text);
  font-family: 'Fira Code', monospace;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.65;
  overflow: hidden;
  cursor: default;
}

::selection {
  background: var(--p1-faint);
  color: var(--p1);
}

/* ═══ CRT Power-On Animation ═══════════════════════════════ */

#power-on {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: #000;
  animation: powerOn 1.8s ease-out forwards;
}

#power-on::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--p1);
  box-shadow: 0 0 30px 10px var(--p1-glow), 0 0 80px 20px var(--p1-bloom);
  transform: translateY(-50%) scaleY(1);
  animation: powerLine 1.8s ease-out forwards;
}

@keyframes powerOn {
  0%, 30%  { opacity: 1; }
  60%      { opacity: 1; }
  100%     { opacity: 0; pointer-events: none; }
}

@keyframes powerLine {
  0%       { transform: translateY(-50%) scaleY(1) scaleX(0.3); opacity: 1; }
  20%      { transform: translateY(-50%) scaleY(1) scaleX(1); opacity: 1; }
  50%      { transform: translateY(-50%) scaleY(200) scaleX(1); opacity: 0.6; }
  70%      { transform: translateY(-50%) scaleY(800) scaleX(1); opacity: 0.3; }
  100%     { transform: translateY(-50%) scaleY(800) scaleX(1); opacity: 0; }
}

/* ═══ CRT Shell ════════════════════════════════════════════ */

#crt {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  padding: 16px;
}

#screen {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 1200px;
  background: var(--bg-screen);
  border-radius: 16px;
  overflow: hidden;
  /* Subtle barrel distortion */
  box-shadow:
    inset 0 0 80px rgba(0, 0, 0, 0.8),
    0 0 2px var(--p1-faint),
    0 0 20px rgba(51, 255, 51, 0.03);
  animation: flicker 8s infinite;
}

@keyframes flicker {
  0%, 100% { opacity: 1; }
  92%      { opacity: 1; }
  93%      { opacity: 0.96; }
  94%      { opacity: 1; }
  96%      { opacity: 0.98; }
  97%      { opacity: 1; }
}

/* ═══ Scanlines ════════════════════════════════════════════ */

#scanlines {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 10;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 1px,
    rgba(0, 0, 0, 0.15) 1px,
    rgba(0, 0, 0, 0.15) 2px
  );
  animation: scanDrift 12s linear infinite;
}

#scanlines::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(51, 255, 51, 0.02) 50%,
    transparent 100%
  );
  height: 33%;
  animation: scanBar 6s ease-in-out infinite;
}

@keyframes scanDrift {
  from { background-position: 0 0; }
  to   { background-position: 0 4px; }
}

@keyframes scanBar {
  0%, 100% { transform: translateY(-10%); }
  50%      { transform: translateY(320%); }
}

/* ═══ Noise Canvas ═════════════════════════════════════════ */

#noise {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 9;
  width: 100%;
  height: 100%;
  opacity: 0.035;
  mix-blend-mode: screen;
}

/* ═══ Vignette ═════════════════════════════════════════════ */

#screen::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 11;
  pointer-events: none;
  background: radial-gradient(
    ellipse 92% 90% at center,
    transparent 70%,
    rgba(0, 0, 0, 0.42) 100%
  );
  border-radius: 16px;
}

/* ═══ Terminal ═════════════════════════════════════════════ */

#terminal {
  position: relative;
  z-index: 5;
  height: 100%;
  padding: 28px 32px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

#terminal::-webkit-scrollbar {
  width: 4px;
}
#terminal::-webkit-scrollbar-track {
  background: transparent;
}
#terminal::-webkit-scrollbar-thumb {
  background: var(--p1-faint);
  border-radius: 2px;
}

/* ═══ Output ═══════════════════════════════════════════════ */

#output {
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* ── Line types ── */

.line {
  min-height: 1.65em;
  text-shadow: 0 0 8px var(--p1-bloom);
}

.line-heading {
  color: var(--heading);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-shadow: 0 0 10px var(--amber-glow), 0 0 30px rgba(255, 176, 0, 0.1);
  margin-top: 0.5em;
}

.line-accent {
  color: var(--text-bright);
  font-weight: 700;
  text-shadow: 0 0 8px var(--p1-glow), 0 0 20px var(--p1-bloom);
}

.line-highlight {
  color: var(--highlight);
  text-shadow: 0 0 8px var(--amber-glow);
}

.line-comment {
  color: var(--comment);
  font-style: italic;
  text-shadow: none;
}

.line-prompt {
  color: var(--text);
  /* Match #input-line's top margin so the echoed command lands exactly where
     the live input prompt was — no vertical jump on submit. */
  margin-top: 0.4em;
}

.line-system {
  color: var(--p1-faint);
  font-size: 0.9em;
  text-shadow: none;
}

.line-ok {
  color: var(--p1);
  text-shadow: 0 0 6px var(--p1-glow);
}

.line-link a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid var(--amber-dim);
  transition: all 0.2s;
  text-shadow: 0 0 8px var(--amber-glow);
}
.line-link a:hover {
  color: var(--amber);
  border-color: var(--amber);
  text-shadow: 0 0 12px var(--amber-glow), 0 0 30px rgba(255, 176, 0, 0.15);
}

.line-separator {
  color: var(--p1-faint);
  user-select: none;
  text-shadow: none;
  opacity: 0.6;
}

.line-bullet {
  padding-left: 2ch;
}
.line-bullet::before {
  content: '> ';
  color: var(--p1-faint);
}

/* ── Fade-in for new lines ── */
.line-enter {
  animation: lineReveal 0.5s ease-out forwards;
}

@keyframes lineReveal {
  0%   { opacity: 0; transform: translateY(2px); filter: brightness(1.7); }
  55%  { opacity: 1; transform: translateY(0);   filter: brightness(1.25); }
  100% { opacity: 1; transform: translateY(0);   filter: brightness(1); }
}

/* ═══ ASCII Art ════════════════════════════════════════════ */

.ascii-art {
  color: var(--p1);
  font-size: 12px;
  line-height: 1.15;
  letter-spacing: 1px;
  text-shadow: 0 0 10px var(--p1-glow), 0 0 40px var(--p1-bloom);
}

/* ═══ Input Line ═══════════════════════════════════════════ */

#input-line {
  display: flex;
  align-items: center;
  margin-top: 0.4em;
  min-height: 1.65em;
}

.prompt {
  color: var(--prompt-user);
  white-space: pre;
  flex-shrink: 0;
  text-shadow: 0 0 8px var(--p1-bloom);
}

.prompt-sep  { color: var(--prompt-sep); }
.prompt-path { color: var(--prompt-path); text-shadow: 0 0 8px var(--amber-glow); }
.prompt-dollar { color: var(--prompt-dollar); }

#input-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

#input-sizer {
  visibility: hidden;
  white-space: pre;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  min-width: 1px;
}

#cmd-input {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-bright);
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  caret-color: transparent;
  text-shadow: 0 0 8px var(--p1-glow);
}

.cursor {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0.6em;
  height: 1.15em;
  background: var(--p1);
  box-shadow: 0 0 6px var(--p1-glow), 0 0 15px var(--p1-bloom);
  animation: cursorBlink 1s step-end infinite;
}

/* Mid-text editing: the block would sit on top of (and hide) the character to
   the right of the caret. Switch to a thin bar that sits between glyphs so the
   text stays fully visible. The block is kept only at end-of-line, where it
   covers empty space. */
.cursor.insert {
  width: 2px;
}

@keyframes cursorBlink {
  50% { opacity: 0; }
}

/* ═══ Tab Completion Ghost ═════════════════════════════════ */

#tab-ghost {
  color: var(--p1-faint);
  text-shadow: none;
  pointer-events: none;
  user-select: none;
}

/* ═══ cat pictures ═════════════════════════════════════════ */

.cat-picture {
  margin: 0.6em 0;
  padding-left: 2ch;
}

.cat-frame {
  position: relative;
  display: inline-block;
  max-width: 480px;
  width: 100%;
  border: 1px solid var(--p1-faint);
  box-shadow: 0 0 12px var(--p1-bloom), 0 0 2px var(--p1-glow);
  border-radius: 2px;
  overflow: hidden;
  background: #000;
}

.cat-img {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(100%) brightness(1.4) contrast(1.05);
}

/* Phosphor tint overlay -- picks up the current theme color */
.cat-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--p1);
  mix-blend-mode: multiply;
  pointer-events: none;
}

/* ═══ DOOM ═════════════════════════════════════════════════ */

#doom-container {
  background: #000;
}

#doom-container canvas,
#doom-container iframe,
#doom-container .emulator-container {
  width: 100% !important;
  height: 100% !important;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

#doom-overlay .jsdos-player-container,
#doom-overlay .jsdos-canvas-container {
  width: 100% !important;
  height: 100% !important;
}

/* ═══ Responsive ═══════════════════════════════════════════ */

@media (max-width: 768px) {
  html, body { font-size: 12px; }
  #crt { padding: 8px; }
  #terminal { padding: 16px 14px; }
  #screen { border-radius: 8px; }
  .ascii-art { font-size: 7.5px; letter-spacing: 0.5px; }
}

@media (max-width: 480px) {
  html, body { font-size: 11px; }
  #terminal { padding: 12px 10px; }
  .ascii-art { font-size: 5.5px; letter-spacing: 0; }
  .line-heading { letter-spacing: 0.08em; }
}

/* ═══ CRT INTENSITY LEVELS ═════════════════════════════════
   Base rules above = the `on` (default) look. `off` strips
   decoration for readability/low-power; `max` adds extras.
   ═══════════════════════════════════════════════════════════ */

/* ── Glass glare overlay (base / on) ── */
#glass {
  position: absolute;
  inset: 0;
  z-index: 12;
  pointer-events: none;
  border-radius: 16px;
  background: radial-gradient(ellipse 55% 35% at 26% 10%, rgba(255, 255, 255, 0.05), transparent 60%);
}

/* ── OFF: flat, plain, max readability ── */
html[data-crt="off"] #power-on,
html[data-crt="off"] #scanlines,
html[data-crt="off"] #noise,
html[data-crt="off"] #glass { display: none; }

html[data-crt="off"] #screen {
  animation: none;
  border-radius: 0;
  box-shadow: inset 0 0 0 1px var(--border);
}
html[data-crt="off"] #screen::after { display: none; }

html[data-crt="off"] .line,
html[data-crt="off"] .line-accent,
html[data-crt="off"] .line-heading,
html[data-crt="off"] .line-highlight,
html[data-crt="off"] .line-ok,
html[data-crt="off"] .line-link a,
html[data-crt="off"] .line-link a:hover,
html[data-crt="off"] .ascii-art,
html[data-crt="off"] .prompt,
html[data-crt="off"] .prompt-path,
html[data-crt="off"] #cmd-input { text-shadow: none; }
html[data-crt="off"] .cursor,
html[data-crt="off"] .cat-frame { box-shadow: none; }
html[data-crt="off"] .line-enter { animation: none; }

/* ── MAX: edge aberration + sync-roll + a touch more bloom ── */
html[data-crt="max"] #glass {
  background:
    radial-gradient(ellipse 55% 35% at 26% 10%, rgba(255, 255, 255, 0.06), transparent 60%),
    linear-gradient(to right, rgba(255, 40, 40, 0.07) 0, transparent 3%),
    linear-gradient(to left,  rgba(40, 130, 255, 0.07) 0, transparent 3%);
}
html[data-crt="max"] .line { text-shadow: 0 0 8px var(--p1-bloom), 0 0 20px var(--p1-bloom); }
html[data-crt="max"] #screen { animation: flicker 8s infinite, syncRoll 24s ease-in-out infinite; }

@keyframes syncRoll {
  0%, 96.8% { transform: translateY(0) skewX(0deg); }
  97.2%     { transform: translateY(-4px) skewX(0.4deg); }
  97.8%     { transform: translateY(3px) skewX(-0.3deg); }
  98.4%     { transform: translateY(0) skewX(0deg); }
  100%      { transform: translateY(0) skewX(0deg); }
}

/* ── Reduced motion: freeze animation, keep the static look ── */
@media (prefers-reduced-motion: reduce) {
  #power-on { animation: none; display: none; }
  #screen,
  html[data-crt="max"] #screen { animation: none; }
  #scanlines,
  #scanlines::after { animation: none; }
  .line-enter { animation: none; }
  .cursor { animation: none; }
}