:root {
  --bg: #0d0d0d;
  --bg-secondary: #141414;
  --terminal-bg: #111111;
  --border: #1e3a2e;
  --green: #00d46a;
  --green-dim: #00a854;
  --green-bright: #00ff88;
  --cyan: #00c8c8;
  --yellow: #f0c040;
  --white: #e8e8e8;
  --gray: #888888;
  --gray-dim: #555555;
  --red: #ff4444;
  --ink: #f3f4f6;
  --slate: #c9d1db;
  --surface: rgba(9, 15, 22, 0.82);
  --surface-strong: rgba(13, 21, 31, 0.96);
  --stroke: rgba(130, 170, 210, 0.22);
  --hero-glow: rgba(68, 177, 255, 0.18);
  --font-mono: 'Fira Code', 'Cascadia Code', 'Source Code Pro', 'Consolas', 'Courier New', monospace;
  --font-sans: 'Manrope', 'Segoe UI', sans-serif;
}

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

html, body {
  height: 100%;
}

body {
  background-color: var(--bg);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  padding: 20px;
  overflow-y: auto;
}

body.body-gui {
  background:
    radial-gradient(circle at top left, rgba(0, 212, 106, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(71, 165, 255, 0.16), transparent 32%),
    linear-gradient(180deg, #08111a 0%, #0d1117 52%, #090c10 100%);
}

/* Scanline effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  pointer-events: none;
  z-index: 100;
}

body.body-gui::before {
  opacity: 0.18;
}

/* Terminal window */
#terminal-window {
  width: 100%;
  max-width: 900px;
  background: var(--terminal-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 0 40px rgba(0, 212, 106, 0.08), 0 0 80px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
}

body.body-gui #terminal-window {
  max-width: 1180px;
  min-height: auto;
  border-color: var(--stroke);
  background: rgba(6, 11, 17, 0.88);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.03);
}

/* Title bar */
#title-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}

body.body-gui #title-bar {
  background: rgba(10, 16, 24, 0.94);
  border-bottom-color: var(--stroke);
  padding: 14px 18px;
}

body.body-gui .traffic-lights {
  display: none;
}

body.body-gui #title-text {
  flex: 0 1 auto;
  text-align: left;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

body.body-gui #mode-toggle {
  margin-left: auto;
}

.traffic-lights {
  display: flex;
  gap: 7px;
}

.traffic-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  opacity: 0.7;
}

.traffic-light.red    { background: #ff5f57; }
.traffic-light.yellow { background: #ffbd2e; }
.traffic-light.green  { background: #28c941; }

#title-text {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.05em;
}

#mode-toggle {
  display: flex;
  gap: 6px;
}

.mode-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--gray);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  padding: 5px 10px;
  cursor: pointer;
}

.mode-btn:hover {
  color: var(--green-bright);
  border-color: rgba(0, 212, 106, 0.5);
}

.mode-btn.active {
  color: var(--bg);
  background: var(--green);
  border-color: var(--green);
  font-weight: 700;
}

/* Terminal output area */
#output {
  flex: 1;
  padding: 20px 24px;
  overflow-y: auto;
  scroll-behavior: smooth;
}

body.body-gui #output {
  padding: 28px;
}

.line {
  margin-bottom: 2px;
  word-break: break-word;
}

.line.blank {
  height: 0.8em;
}

/* Color classes */
.c-green        { color: var(--green); }
.c-green-bright { color: var(--green-bright); }
.c-cyan         { color: var(--cyan); }
.c-yellow       { color: var(--yellow); }
.c-white        { color: var(--white); }
.c-gray         { color: var(--gray); }
.c-gray-dim     { color: var(--gray-dim); }
.c-red          { color: var(--red); }

.bold { font-weight: 700; }
.indent { padding-left: 20px; }
.indent2 { padding-left: 40px; }

/* Prompt */
.prompt-prefix {
  color: var(--cyan);
  font-weight: 700;
}

.prompt-at     { color: var(--gray-dim); }
.prompt-host   { color: var(--green); }
.prompt-path   { color: var(--yellow); }
.prompt-dollar { color: var(--white); }
.prompt-cmd    { color: var(--white); }

/* Input row */
#input-row {
  display: flex;
  align-items: center;
  padding: 10px 24px 16px;
  border-top: 1px solid var(--border);
  background: var(--terminal-bg);
  gap: 0;
}

#input-row .prompt-prefix { white-space: nowrap; }

#cmd-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 14px;
  caret-color: var(--green);
  margin-left: 4px;
}

#cmd-input::selection {
  background: rgba(0, 212, 106, 0.3);
}

/* Blinking cursor on typed-out commands */
@keyframes blink {
  0%, 49%  { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--green);
  vertical-align: text-bottom;
  animation: blink 1s infinite;
  margin-left: 1px;
}

/* Separator line */
.separator {
  border: none;
  border-top: 1px solid var(--border);
  margin: 6px 0;
}

/* Section header */
.section-header {
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 13px;
  margin-top: 4px;
}

/* Tag chips */
.tag {
  display: inline-block;
  background: rgba(0, 212, 106, 0.1);
  border: 1px solid rgba(0, 212, 106, 0.3);
  color: var(--green);
  border-radius: 3px;
  padding: 1px 7px;
  font-size: 12px;
  margin: 2px 3px 2px 0;
}

.tag.azure  { border-color: #0072C6; color: #4db8ff; background: rgba(0, 114, 198, 0.1); }
.tag.yellow { border-color: #f0c040; color: #f0c040; background: rgba(240, 192, 64, 0.08); }
.tag.cyan   { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 200, 200, 0.08); }

/* Links */
a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  color: var(--green-bright);
  text-decoration: underline;
}

/* ASCII art header */
.ascii-art {
  color: var(--green-dim);
  line-height: 1.2;
  white-space: pre;
  font-size: 13px;
}

/* Boot sequence lines */
.boot-line {
  opacity: 0;
  animation: fadeIn 0.1s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* Status OK/FAIL */
.status-ok   { color: var(--green); }
.status-fail { color: var(--red); }
.status-warn { color: var(--yellow); }

/* Mode chooser */
.mode-chooser {
  max-width: 760px;
  margin: 8vh auto 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(20, 20, 20, 0.8);
  padding: 24px;
}

.mode-chooser h1 {
  font-size: 18px;
  color: var(--white);
  margin-bottom: 6px;
}

.mode-chooser p {
  color: var(--gray);
  margin-bottom: 16px;
}

.mode-choice-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.mode-choice-btn {
  border: 1px solid rgba(0, 212, 106, 0.4);
  background: rgba(0, 212, 106, 0.08);
  color: var(--green-bright);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 10px 14px;
  cursor: pointer;
}

.mode-choice-btn:hover {
  background: rgba(0, 212, 106, 0.18);
}

/* GUI mode */
.gui-mode {
  display: grid;
  gap: 24px;
  align-content: start;
}

.gui-profile-strip,
.gui-stat-card,
.gui-explore-card,
.gui-capability-card,
.gui-detail-card,
.gui-footer-card {
  border: 1px solid var(--stroke);
  border-radius: 20px;
  background: var(--surface);
  backdrop-filter: blur(10px);
}

.gui-profile-strip {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
  padding: 12px 14px;
}

.gui-profile-brand {
  display: grid;
  gap: 6px;
}

.gui-profile-brand p {
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: 14px;
}

.gui-mini-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.gui-mini-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid rgba(125, 197, 255, 0.24);
  background: rgba(255, 255, 255, 0.02);
  color: var(--ink);
  border-radius: 999px;
  padding: 9px 14px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
}

.gui-mini-nav-link:hover {
  background: rgba(125, 197, 255, 0.1);
  text-decoration: none;
}

.gui-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.85fr);
  gap: 18px;
  border: 1px solid var(--stroke);
  border-radius: 24px;
  background: radial-gradient(circle at top right, var(--hero-glow), transparent 34%), linear-gradient(180deg, rgba(14, 22, 32, 0.96), rgba(7, 12, 18, 0.98));
  padding: 30px;
  overflow: hidden;
}

.gui-hero-copy,
.gui-section,
.gui-section-heading,
.gui-nav-card,
.gui-capability-card,
.gui-stat-stack,
.gui-stat-card {
  display: grid;
}

.gui-hero-copy {
  gap: 16px;
}

.gui-kicker,
.gui-eyebrow {
  color: #7dc5ff;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.gui-hero h1,
.gui-section-heading h2 {
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.gui-section-heading h2 {
  font-size: clamp(24px, 3.2vw, 34px);
}

.gui-hero p,
.gui-nav-card p,
.gui-capability-card p,
.gui-footer-card p {
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
}

.gui-action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.gui-primary-link,
.gui-secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.gui-primary-link {
  background: linear-gradient(135deg, #63c9ff, #32e48d);
  color: #08111a;
}

.gui-secondary-link {
  border-color: rgba(125, 197, 255, 0.3);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
}

.gui-primary-link:hover,
.gui-secondary-link:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.gui-stat-stack {
  gap: 12px;
  align-content: start;
}

.gui-stat-card {
  padding: 18px;
  gap: 6px;
}

.gui-stat-value {
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.gui-stat-label {
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
}

.gui-section {
  gap: 16px;
}

.gui-section-heading {
  gap: 8px;
}

.gui-explore-grid,
.gui-capability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.gui-explore-card,
.gui-capability-card {
  padding: 22px;
  gap: 12px;
}

.gui-explore-card {
  appearance: none;
  width: 100%;
  display: grid;
  text-align: left;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.gui-explore-card:hover {
  transform: translateY(-2px);
  border-color: rgba(125, 197, 255, 0.36);
  background: rgba(16, 28, 40, 0.94);
}

.gui-explore-title,
.gui-capability-card h3 {
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 20px;
  line-height: 1.1;
  font-weight: 700;
}

.gui-explore-desc {
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
}

.gui-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.gui-detail-card {
  display: grid;
  gap: 12px;
  padding: 22px;
}

.gui-detail-card h3 {
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
}

.gui-card-kicker {
  color: #7dc5ff;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.gui-detail-card p {
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
}

.gui-card-list {
  list-style: none;
  display: grid;
  gap: 9px;
}

.gui-card-list li {
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
}

.gui-card-list li::before {
  content: '▸ ';
  color: #7dc5ff;
}

.gui-section-anchor {
  scroll-margin-top: 24px;
}

.gui-link-list,
.gui-footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.gui-link-list a,
.gui-footer-links a {
  font-family: var(--font-sans);
  font-weight: 700;
}

.gui-mode .tag {
  border-radius: 999px;
  padding: 4px 10px;
  margin: 3px 6px 3px 0;
}

.gui-capability-shell {
  padding: 2px 0;
}

.gui-footer-card {
  padding: 18px 22px;
  background: var(--surface-strong);
}

.gui-footer-card strong {
  color: var(--ink);
  font-family: var(--font-mono);
}

/* Responsive */
@media (max-width: 640px) {
  body {
    padding: 0;
    font-size: 13px;
  }

  #terminal-window {
    border-radius: 0;
    min-height: 100vh;
    border-left: none;
    border-right: none;
  }

  #output {
    padding: 14px 16px;
  }

  body.body-gui #output {
    padding: 18px 16px 22px;
  }

  #input-row {
    padding: 8px 16px 12px;
  }

  .ascii-art {
    font-size: 8px;
  }

  #title-text {
    display: none;
  }

  .mode-btn {
    font-size: 10px;
    padding: 5px 8px;
  }

  .gui-hero {
    grid-template-columns: 1fr;
    padding: 20px;
    border-radius: 18px;
  }

  .gui-profile-strip {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
    border-radius: 18px;
  }

  .gui-profile-strip.gui-mini-nav {
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 12px;
  }

  .gui-hero h1,
  .gui-section-heading h2 {
    line-height: 1.08;
  }

  .gui-explore-card,
  .gui-capability-card,
  .gui-detail-card,
  .gui-footer-card,
  .gui-stat-card {
    border-radius: 16px;
  }
}