/* ── terminal phosphor — amber on charcoal ── */

:root {
  --bg:       #0f0e0c;
  --surface:  #181613;
  --ink:      #d4b86a;
  --ink-dim:  #8a7a4a;
  --ink-bright: #f0d78a;
  --rule:     #2a2618;
  --accent:   #d4b86a;
  --cursor:   #d4b86a;
  --selection: rgba(212, 184, 106, 0.25);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:       #f5f0e0;
    --surface:  #ede6d0;
    --ink:      #3a3520;
    --ink-dim:  #7a7048;
    --ink-bright: #1a1608;
    --rule:     #d4c898;
    --accent:   #6a5a20;
    --cursor:   #6a5a20;
    --selection: rgba(106, 90, 32, 0.15);
  }
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "JetBrains Mono", "SF Mono", "Fira Code", "Cascadia Code", ui-monospace, Menlo, monospace;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--selection);
  color: var(--ink-bright);
}

:focus-visible {
  outline: 1px solid var(--ink-bright);
  outline-offset: 2px;
}

a {
  color: var(--ink-bright);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  text-decoration-color: var(--ink-dim);
  transition: text-decoration-color 0.15s;
}
a:hover {
  text-decoration-color: var(--ink-bright);
}

/* ── layout ── */

.terminal {
  max-width: 84ch;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}

/* ── top bar ── */

.top-bar {
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.prompt-sign {
  color: var(--ink-dim);
  user-select: none;
}

.prompt-path {
  color: var(--ink-bright);
}

.prompt-cursor {
  color: var(--cursor);
  animation: blink 1s step-end infinite;
}

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

/* ── boot line ── */

.boot-line {
  color: var(--ink-dim);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  padding-left: 0.25em;
}

.timestamp {
  color: var(--ink-dim);
  user-select: none;
}

/* ── ASCII art ── */

.ascii-art pre {
  font-size: 0.55rem;
  line-height: 1.15;
  color: var(--ink-dim);
  margin: 0 0 1.5rem 0;
  overflow-x: auto;
  white-space: pre;
}

/* ── sections ── */

.section {
  margin-bottom: 1.75rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.4em;
  margin-bottom: 0.5rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--rule);
}

.section-tag {
  color: var(--ink-bright);
  font-weight: 500;
}

.section-cursor {
  color: var(--cursor);
  animation: blink 1s step-end infinite;
  font-size: 0.9rem;
}

.section-body {
  padding-left: 0.25em;
}

.section-body p {
  margin: 0.15em 0;
  display: flex;
  gap: 1em;
}

.line-num {
  color: var(--ink-dim);
  user-select: none;
  min-width: 2.2em;
  text-align: right;
  font-size: 0.85rem;
}

.key {
  color: var(--ink-bright);
  min-width: 7em;
  display: inline-block;
}

/* ── form ── */

.form {
  margin-top: 0.75rem;
  padding-left: 0.25em;
}

.form-line {
  display: flex;
  align-items: baseline;
  gap: 0.5em;
  margin-bottom: 0.5rem;
}

.form-label {
  color: var(--ink-dim);
  min-width: 5em;
  user-select: none;
}

.form-line input,
.form-line textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-bright);
  font-family: inherit;
  font-size: inherit;
  padding: 0.2em 0.4em;
  flex: 1;
  min-width: 0;
}

.form-line input:focus,
.form-line textarea:focus {
  outline: none;
  border-bottom-color: var(--ink-bright);
}

.form-line input::placeholder,
.form-line textarea::placeholder {
  color: var(--ink-dim);
  opacity: 0.5;
}

.form-line-area {
  align-items: flex-start;
}

.form-line-area textarea {
  resize: vertical;
  border: 1px solid var(--rule);
  padding: 0.3em 0.4em;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 1em;
  margin-top: 0.75rem;
}

.btn-send {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: inherit;
  font-size: inherit;
  padding: 0.3em 0.8em;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.btn-send:hover {
  background: var(--ink);
  color: var(--bg);
}

.btn-send:focus-visible {
  outline: 1px solid var(--ink-bright);
  outline-offset: 2px;
}

.form-status {
  color: var(--ink-dim);
  font-size: 0.85rem;
}

/* ── footer ── */

.footer {
  margin-top: 2.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
}

.footer-line {
  display: flex;
  gap: 0.75em;
  margin-bottom: 0.2em;
}

.footer .muted {
  color: var(--ink-dim);
}

.footer .attribution {
  font-size: 0.75rem;
  opacity: 0.6;
}

.footer .attribution a {
  color: var(--ink-dim);
}

/* ── reduced motion ── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .prompt-cursor,
  .section-cursor {
    animation: none;
    opacity: 1;
  }
}

/* ── small screens ── */

@media (max-width: 600px) {
  .terminal {
    padding: 1rem 0.75rem;
  }
  .ascii-art pre {
    font-size: 0.4rem;
  }
  .section-body p {
    flex-wrap: wrap;
    gap: 0.25em;
  }
  .line-num {
    min-width: 1.8em;
  }
  .form-line {
    flex-wrap: wrap;
  }
  .form-label {
    min-width: 3em;
  }
}