/* ============================================
   solo-stack interactive builder
   Retro computing aesthetic: lime green gradient,
   Windows 3.1 chrome, CRT terminal, monospace
   ============================================ */

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

:root {
  --green-light: #c8e64e;
  --green-mid: #a3c93a;
  --green-dark: #6b8c24;
  --cream: #f5f0e1;
  --cream-dark: #e8e0cc;
  --black: #1a1a1a;
  --gray-light: #c0c0c0;
  --gray-mid: #808080;
  --gray-dark: #404040;
  --white: #ffffff;
  --terminal-green: #33ff33;
  --terminal-bg: #0a0a0a;
  --window-border: #dfdfdf;
  --window-border-dark: #404040;
  --window-title: #000080;
  --font-mono: 'Courier New', Courier, monospace;
  --font-system: 'Arial', 'Helvetica', sans-serif;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--green-light) 0%, #d4e85a 30%, var(--green-mid) 70%, #8ab82e 100%);
  min-height: 100vh;
  color: var(--black);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
  cursor: default;
}

/* --- Screens --- */
.scene {
  width: 100%;
  max-width: 720px;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.screen { display: none; width: 100%; }
.screen.active { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }

/* --- CRT Monitor --- */
.crt {
  width: 100%;
  max-width: 600px;
}

.crt-bezel {
  background: var(--terminal-bg);
  border: 3px solid #333;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow:
    inset 0 0 60px rgba(51, 255, 51, 0.03),
    0 8px 32px rgba(0, 0, 0, 0.3);
}

.crt-screen {
  font-family: var(--font-mono);
  color: var(--terminal-green);
  font-size: 0.875rem;
  line-height: 1.6;
}

.ascii-logo {
  font-size: 0.65rem;
  line-height: 1.2;
  color: var(--terminal-green);
  white-space: pre;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.tagline {
  color: var(--terminal-green);
  opacity: 0.7;
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.crt-divider {
  border-bottom: 1px solid rgba(51, 255, 51, 0.2);
  margin: 1rem 0;
}

.crt-prompt {
  font-size: 0.875rem;
}

.typing {
  border-right: 2px solid var(--terminal-green);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { border-color: transparent; }
}

/* --- Start Button --- */
.start-btn {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: bold;
  background: var(--black);
  color: var(--terminal-green);
  border: 2px solid var(--terminal-green);
  padding: 0.75rem 2rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s, color 0.15s;
}

.start-btn:hover {
  background: var(--terminal-green);
  color: var(--black);
}

.start-btn:hover .btn-icon { filter: none; }
.btn-icon {
  width: 16px;
  height: 16px;
  filter: invert(68%) sepia(74%) saturate(439%) hue-rotate(71deg) brightness(105%) contrast(104%);
}

/* --- Retro Windows --- */
.windows-stack {
  width: 100%;
  max-width: 600px;
  position: relative;
}

.retro-window {
  background: var(--gray-light);
  border: 2px solid var(--white);
  border-right-color: var(--window-border-dark);
  border-bottom-color: var(--window-border-dark);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.15);
  margin-bottom: 1rem;
  animation: windowSlideIn 0.3s ease-out;
}

@keyframes windowSlideIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.window-titlebar {
  background: var(--window-title);
  color: var(--white);
  font-family: var(--font-system);
  font-size: 0.75rem;
  font-weight: bold;
  padding: 3px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.window-titlebar-text { padding-left: 2px; }

.window-controls {
  display: flex;
  gap: 2px;
}

.window-ctrl {
  width: 16px;
  height: 14px;
  background: var(--gray-light);
  border: 1px solid var(--white);
  border-right-color: var(--gray-dark);
  border-bottom-color: var(--gray-dark);
  font-size: 9px;
  line-height: 12px;
  text-align: center;
  color: var(--black);
  font-family: var(--font-system);
}

.window-body {
  background: var(--cream);
  padding: 1.25rem;
  font-size: 0.875rem;
}

.window-body p {
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* --- Question Options --- */
.options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.option-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: left;
  background: var(--white);
  border: 2px solid var(--gray-light);
  border-right-color: var(--gray-dark);
  border-bottom-color: var(--gray-dark);
  padding: 0.625rem 0.875rem;
  cursor: pointer;
  transition: background 0.1s;
  line-height: 1.4;
}

.option-btn:hover {
  background: var(--window-title);
  color: var(--white);
}

.option-btn.selected {
  background: var(--window-title);
  color: var(--white);
  border-color: var(--window-title);
}

/* --- Progress indicator --- */
.progress-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 1rem;
}

.progress-dot {
  width: 10px;
  height: 10px;
  background: var(--gray-light);
  border: 1px solid var(--gray-mid);
}

.progress-dot.done { background: var(--green-dark); border-color: var(--green-dark); }
.progress-dot.current { background: var(--window-title); border-color: var(--window-title); }

/* --- Results --- */
.crt-results { max-width: 680px; }

.crt-results .crt-bezel {
  padding: 1.5rem;
}

.result-header {
  color: var(--terminal-green);
  font-size: 0.75rem;
  opacity: 0.6;
  margin-bottom: 0.5rem;
}

.result-stack-name {
  color: var(--terminal-green);
  font-size: 1.1rem;
  font-weight: bold;
  margin-bottom: 0.25rem;
}

.result-description {
  color: var(--terminal-green);
  opacity: 0.7;
  font-size: 0.75rem;
  margin-bottom: 1rem;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.25rem 0;
  font-size: 0.8rem;
  color: var(--terminal-green);
}

.result-label { opacity: 0.7; }
.result-dots {
  flex: 1;
  margin: 0 0.5rem;
  border-bottom: 1px dotted rgba(51, 255, 51, 0.3);
  position: relative;
  top: -3px;
}
.result-value { font-weight: bold; }

.result-total {
  border-top: 1px solid rgba(51, 255, 51, 0.3);
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  font-size: 1rem;
  font-weight: bold;
  color: var(--terminal-green);
}

/* --- Results detail cards --- */
.results-detail {
  width: 100%;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.detail-card {
  animation: windowSlideIn 0.3s ease-out;
}

.detail-card .window-body {
  font-size: 0.8rem;
  padding: 1rem;
}

.detail-tool-name {
  font-weight: bold;
  margin-bottom: 0.25rem;
}

.detail-meta {
  color: var(--gray-mid);
  font-size: 0.75rem;
  margin-bottom: 0.5rem;
}

.detail-gotcha {
  font-size: 0.75rem;
  color: var(--gray-dark);
  margin-top: 0.375rem;
  padding-left: 0.75rem;
  position: relative;
}

.detail-gotcha::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green-dark);
}

.detail-scale {
  margin-top: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--cream-dark);
}

.scale-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--gray-mid);
  padding: 0.125rem 0;
}

/* --- Results footer --- */
.results-footer {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.github-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --- Site footer --- */
.site-footer {
  margin-top: 3rem;
  font-size: 0.7rem;
  color: var(--green-dark);
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.site-footer a {
  color: var(--black);
  text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 640px) {
  body { padding: 1rem 0.75rem; }
  .ascii-logo { font-size: 0.45rem; }
  .crt-bezel { padding: 1rem; }
  .window-body { padding: 1rem; }
  .result-row { font-size: 0.75rem; }
  .results-footer { flex-direction: column; gap: 1rem; }
}