/* ============================================================
   achvc.com — CLI Terminal Portfolio
   Design System & Styles
   ============================================================ */

/* ---- Custom Properties ---- */
:root {
  --bg:            #0a0a0a;
  --bg-term:       #0d0d0d;
  --bg-titlebar:   #111111;
  --green:         #00ff41;
  --green-dim:     #00c832;
  --green-glow:    rgba(0, 255, 65, 0.35);
  --cyan:          #00d4ff;
  --cyan-dim:      #009dbe;
  --cyan-glow:     rgba(0, 212, 255, 0.3);
  --amber:         #ffb800;
  --amber-dim:     #c98f00;
  --red:           #ff4f4f;
  --white:         #e8e8e8;
  --gray:          #555555;
  --gray-light:    #888888;
  --border:        rgba(0, 255, 65, 0.15);
  --font:          'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --fs-base:       14px;
  --fs-sm:         12px;
  --fs-lg:         16px;
  --lh:            1.7;
  --titlebar-h:    38px;
  --input-h:       44px;
  --term-radius:   10px;
}

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

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--green);
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: var(--lh);
  overflow: hidden;
}

/* ---- CRT Effects ---- */
.crt-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.18) 2px,
    rgba(0, 0, 0, 0.18) 4px
  );
  animation: flicker 0.15s infinite;
}

.crt-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  background: radial-gradient(ellipse at center,
    transparent 50%,
    rgba(0, 0, 0, 0.75) 100%
  );
}

@keyframes flicker {
  0%   { opacity: 1; }
  92%  { opacity: 1; }
  93%  { opacity: 0.92; }
  94%  { opacity: 1; }
  96%  { opacity: 0.97; }
  100% { opacity: 1; }
}

/* ---- Layout ---- */
body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.terminal-window {
  position: relative;
  z-index: 10;
  width: calc(100vw - 32px);
  max-width: 1400px;
  height: calc(100vh - 80px);
  background: var(--bg-term);
  border: 1px solid var(--border);
  border-radius: var(--term-radius);
  display: flex;
  flex-direction: column;
  box-shadow:
    0 0 0 1px rgba(0, 255, 65, 0.06),
    0 0 40px rgba(0, 255, 65, 0.12),
    0 0 80px rgba(0, 255, 65, 0.06),
    0 20px 60px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

/* ---- Titlebar ---- */
.terminal-titlebar {
  height: var(--titlebar-h);
  min-height: var(--titlebar-h);
  background: var(--bg-titlebar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 12px;
  flex-shrink: 0;
}

.titlebar-dots {
  display: flex;
  align-items: center;
  gap: 7px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red    { background: #ff5f57; box-shadow: 0 0 6px rgba(255, 95, 87, 0.6); }
.dot-yellow { background: #febc2e; box-shadow: 0 0 6px rgba(254, 188, 46, 0.5); }
.dot-green  { background: #28c840; box-shadow: 0 0 6px rgba(40, 200, 64, 0.5); }

.titlebar-title {
  flex: 1;
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--gray-light);
  letter-spacing: 0.05em;
}

.titlebar-actions {
  width: 48px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

/* ---- Theme Toggle Button ---- */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--gray-light);
  font-size: 14px;
  width: 26px;
  height: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  font-family: var(--font);
}

.theme-toggle:hover {
  background: rgba(0, 255, 65, 0.1);
  color: var(--green);
  border-color: var(--green);
}

/* ---- Terminal Body (scrollable output) ---- */
.terminal-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 18px 22px 10px;
  scroll-behavior: smooth;
}

.terminal-body::-webkit-scrollbar {
  width: 6px;
}
.terminal-body::-webkit-scrollbar-track {
  background: transparent;
}
.terminal-body::-webkit-scrollbar-thumb {
  background: rgba(0, 255, 65, 0.2);
  border-radius: 3px;
}
.terminal-body::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 255, 65, 0.4);
}

#terminal-output {
  min-height: 100%;
}

/* ---- Input Row ---- */
.terminal-input-row {
  display: flex;
  align-items: center;
  padding: 8px 22px;
  min-height: var(--input-h);
  border-top: 1px solid var(--border);
  background: rgba(0, 255, 65, 0.02);
  flex-shrink: 0;
  gap: 0;
}

.prompt-label {
  white-space: nowrap;
  font-size: var(--fs-base);
  user-select: none;
  flex-shrink: 0;
}

.prompt-user   { color: var(--green);   font-weight: 600; text-shadow: 0 0 8px var(--green-glow); }
.prompt-at     { color: var(--gray-light); }
.prompt-host   { color: var(--cyan);    font-weight: 600; text-shadow: 0 0 8px var(--cyan-glow); }
.prompt-colon  { color: var(--gray-light); }
.prompt-dir    { color: var(--amber);   font-weight: 600; }
.prompt-dollar { color: var(--white);   margin-right: 10px; }

.input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.terminal-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: var(--lh);
  caret-color: transparent; /* hide native caret, use custom block cursor */
  letter-spacing: 0.02em;
}

.terminal-input::selection {
  background: rgba(0, 255, 65, 0.3);
}

.cursor-block {
  position: absolute;
  display: inline-block;
  width: 9px;
  height: 16px;
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
  animation: blink-cursor 1.1s step-end infinite;
  pointer-events: none;
  top: 50%;
  transform: translateY(-50%);
}

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

/* ---- Terminal Output Lines ---- */
.output-line {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
  font-size: var(--fs-base);
  line-height: var(--lh);
  animation: line-appear 0.06s ease-out both;
}

@keyframes line-appear {
  from { opacity: 0; transform: translateY(2px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Colour variants */
.c-green  { color: var(--green);      text-shadow: 0 0 6px var(--green-glow); }
.c-cyan   { color: var(--cyan);       text-shadow: 0 0 6px var(--cyan-glow); }
.c-amber  { color: var(--amber); }
.c-red    { color: var(--red); }
.c-white  { color: var(--white); }
.c-gray   { color: var(--gray-light); }
.c-dim    { color: var(--gray); }

/* Utility */
.c-bold   { font-weight: 700; }
.c-italic { font-style: italic; }
.c-under  { text-decoration: underline; }

/* Echo'd command line */
.output-cmd {
  color: var(--white);
  margin: 6px 0 2px;
}

/* Spacer line */
.output-blank {
  height: 4px;
  display: block;
}

/* ASCII art lines */
.ascii-art {
  color: var(--green);
  text-shadow: 0 0 10px var(--green-glow);
  font-size: 12px;
  line-height: 1.3;
  letter-spacing: 0;
}

/* Progress bar */
.progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--green);
  font-size: var(--fs-sm);
}

.progress-bar-outer {
  display: inline-block;
  width: 160px;
  height: 10px;
  border: 1px solid var(--green-dim);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-inner {
  height: 100%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green-glow);
  width: 0%;
  transition: width 0.3s ease;
}

/* Table / grid output (for /ls) */
.ls-entry {
  display: grid;
  grid-template-columns: 130px 80px 110px 1fr;
  gap: 0 14px;
  align-items: center;
  font-size: var(--fs-sm);
  line-height: 1.9;
}

.ls-entry .ls-perm  { color: var(--gray-light); }
.ls-entry .ls-owner { color: var(--cyan); text-shadow: 0 0 4px var(--cyan-glow); }
.ls-entry .ls-date  { color: var(--gray-light); }
.ls-entry .ls-name  { color: var(--amber); font-weight: 600; }
.ls-entry .ls-name.dir { color: var(--cyan); text-shadow: 0 0 6px var(--cyan-glow); }

/* Divider */
.output-divider {
  border: none;
  border-top: 1px solid rgba(0, 255, 65, 0.12);
  margin: 8px 0;
}

/* Badge / tag */
.badge {
  display: inline-block;
  padding: 1px 7px;
  border: 1px solid currentColor;
  border-radius: 3px;
  font-size: 11px;
  letter-spacing: 0.08em;
}

/* Glowing headline text */
.glow-green { color: var(--green); text-shadow: 0 0 14px var(--green-glow), 0 0 30px var(--green-glow); }
.glow-cyan  { color: var(--cyan);  text-shadow: 0 0 14px var(--cyan-glow),  0 0 30px var(--cyan-glow); }

/* ---- Boot animation ---- */
.boot-line {
  opacity: 0;
  animation: boot-reveal 0.25s ease-out forwards;
}

@keyframes boot-reveal {
  from { opacity: 0; transform: translateX(-4px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ---- Bottom hint ---- */
.bottom-hint {
  margin-top: 10px;
  font-size: var(--fs-sm);
  color: var(--gray);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transition: opacity 1s ease;
}

.bottom-hint.visible {
  opacity: 1;
}

.bottom-hint .hint-icon {
  font-size: 15px;
}

.bottom-hint kbd {
  background: rgba(0, 255, 65, 0.1);
  border: 1px solid rgba(0, 255, 65, 0.25);
  border-radius: 3px;
  padding: 1px 6px;
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
}

/* ---- Neofetch card ---- */
.neofetch-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 28px;
  margin: 4px 0;
}

.neofetch-logo {
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan-glow);
  font-size: 11px;
  line-height: 1.3;
  white-space: pre;
}

.neofetch-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.nf-row {
  font-size: var(--fs-sm);
  line-height: 1.8;
}

.nf-key {
  color: var(--cyan);
  font-weight: 600;
  margin-right: 4px;
}

.nf-val {
  color: var(--white);
}

.nf-colors {
  display: flex;
  gap: 5px;
  margin-top: 4px;
}

.nf-swatch {
  width: 14px;
  height: 14px;
  border-radius: 2px;
}

/* ---- Matrix overlay ---- */
#matrix-canvas {
  position: fixed;
  inset: 0;
  z-index: 500;
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: all;
  cursor: pointer;
}

#matrix-canvas.active {
  opacity: 1;
}

#matrix-hint {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 501;
  color: var(--green);
  font-family: var(--font);
  font-size: var(--fs-sm);
  text-shadow: 0 0 8px var(--green-glow);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}

#matrix-hint.active {
  opacity: 1;
}

/* ================================================================
   LIGHT MODE
   ================================================================ */
[data-theme="light"] {
  --bg:            #eae8df;
  --bg-term:       #f5f3ea;
  --bg-titlebar:   #e0ddd2;
  --green:         #2a7a2a;
  --green-dim:     #1e5e1e;
  --green-glow:    rgba(42, 122, 42, 0.2);
  --cyan:          #006b8a;
  --cyan-dim:      #00506a;
  --cyan-glow:     rgba(0, 107, 138, 0.2);
  --amber:         #8a6000;
  --amber-dim:     #6a4800;
  --red:           #cc2200;
  --white:         #1a1a1a;
  --gray:          #999999;
  --gray-light:    #666666;
  --border:        rgba(42, 122, 42, 0.2);
}

[data-theme="light"] html,
[data-theme="light"] body {
  background: var(--bg);
}

[data-theme="light"] .terminal-window {
  box-shadow:
    0 0 0 1px rgba(42, 122, 42, 0.1),
    0 4px 24px rgba(0, 0, 0, 0.12),
    0 20px 60px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .crt-overlay {
  opacity: 0;
  animation: none;
}

[data-theme="light"] .crt-vignette {
  opacity: 0;
}

[data-theme="light"] .terminal-body::-webkit-scrollbar-thumb {
  background: rgba(42, 122, 42, 0.2);
}
[data-theme="light"] .terminal-body::-webkit-scrollbar-thumb:hover {
  background: rgba(42, 122, 42, 0.4);
}

[data-theme="light"] .terminal-input-row {
  background: rgba(42, 122, 42, 0.03);
}

[data-theme="light"] .terminal-input {
  color: var(--white);
}

[data-theme="light"] .cursor-block {
  background: var(--green);
  box-shadow: 0 0 6px var(--green-glow);
}

[data-theme="light"] .output-divider {
  border-color: rgba(42, 122, 42, 0.15);
}

[data-theme="light"] .bottom-hint kbd {
  background: rgba(42, 122, 42, 0.08);
  border-color: rgba(42, 122, 42, 0.2);
  color: var(--green);
}

[data-theme="light"] .theme-toggle:hover {
  background: rgba(42, 122, 42, 0.1);
  color: var(--green);
  border-color: var(--green);
}

/* ---- Responsive: tablet / small desktop ---- */
@media (max-width: 700px) {
  :root {
    --fs-base: 13px;
    --fs-sm:   11px;
  }

  body {
    padding: 8px;
  }

  .terminal-window {
    width: calc(100vw - 16px);
    height: calc(100vh - 56px);
    border-radius: 6px;
  }

  .terminal-body {
    padding: 14px 16px 8px;
  }

  .terminal-input-row {
    padding: 6px 16px;
  }

  .neofetch-card {
    grid-template-columns: 1fr;
  }

  .neofetch-logo {
    display: none;
  }

  .ls-entry {
    grid-template-columns: 1fr 1fr;
  }

  .ls-entry .ls-perm,
  .ls-entry .ls-date {
    display: none;
  }
}

/* ---- Responsive: narrow mobile (≤ 600px) ---- */
@media (max-width: 600px) {
  :root {
    --fs-base: 12px;
    --fs-sm:   10px;
  }

  body {
    padding: 4px;
  }

  .terminal-window {
    width: 100vw;
    height: 100svh;          /* use small viewport height on mobile browsers */
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .terminal-body {
    padding: 10px 12px 6px;
  }

  .terminal-input-row {
    padding: 5px 12px;
    min-height: 38px;
  }

  /* Shorten prompt: hide host, show only user:~ $ */
  .prompt-host,
  .prompt-at,
  .prompt-colon {
    display: none;
  }

  /* Compact ASCII art: scale down heavily */
  .ascii-art {
    font-size: 7px;
    line-height: 1.2;
    letter-spacing: -0.5px;
  }

  /* /help command list: stack vertically */
  .output-line span[style*="min-width:220px"],
  .output-line span[style*="min-width: 220px"] {
    display: block !important;
    min-width: unset !important;
    margin-bottom: 1px;
  }

  /* /skills stack vertically */
  .output-line span[style*="min-width:120px"],
  .output-line span[style*="min-width: 120px"] {
    display: block !important;
    min-width: unset !important;
    margin-bottom: 1px;
  }

  .neofetch-card {
    grid-template-columns: 1fr;
  }

  .neofetch-logo {
    display: none;
  }

  .ls-entry {
    grid-template-columns: 1fr;
  }

  .ls-entry .ls-perm,
  .ls-entry .ls-date,
  .ls-entry .ls-owner {
    display: none;
  }

  .titlebar-title {
    font-size: 10px;
  }

  .bottom-hint {
    font-size: 10px;
  }
}