/* ==========================================================================
   PRism-AI Website Stylesheet
   Crafted with IBM Carbon Aesthetics, Clean Modern Card Grids & Interactive Terminals
   ========================================================================== */

:root {
  /* Colors */
  --ink: #0a1c3c;
  --slate: #44546c;
  --slate-light: #6a7c98;
  --paper: #f4f7fc;
  --paper-subtle: #edf2f9;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --line: #d8e0ee;
  --line-strong: #bac7de;
  --code-bg: #e5ebf7;
  --code-ink: #0a1c3c;

  /* Accent & Gradients */
  --blue: #0062ff;
  --blue-hover: #004ed0;
  --indigo: #3c59f5;
  --violet: #8a3ffc;
  --cyan: #00d2ff;
  --cyan-subtle: #e6f9ff;
  --gradient-prism: linear-gradient(135deg, #0062ff 0%, #8a3ffc 50%, #00d2ff 100%);

  /* Terminal & Dark Surface */
  --term-bg: #091322;
  --term-panel: #0f1e34;
  --term-border: #1b2d4b;
  --term-text: #e1ebfa;
  --term-muted: #8096b8;
  --term-prompt: #45b8ff;

  /* Status Colors */
  --ok: #10b981;
  --ok-bg: rgba(16, 185, 129, 0.12);
  --bad: #ef4444;
  --bad-bg: rgba(239, 68, 68, 0.12);
  --warn: #f59e0b;
  --warn-bg: rgba(245, 158, 11, 0.12);

  /* Typography */
  --font-display: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;

  /* UI Tokens */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
  --shadow-sm: 0 1px 3px rgba(10, 28, 60, 0.05);
  --shadow-md: 0 6px 20px rgba(10, 28, 60, 0.08);
  --shadow-lg: 0 14px 40px rgba(10, 28, 60, 0.12);
  --shadow-term: 0 20px 50px rgba(9, 19, 34, 0.35);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   Global Resets & Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--blue);
  color: #ffffff;
}

img, svg {
  display: block;
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

a:hover {
  color: var(--violet);
}

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
  border-radius: 4px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

p {
  margin: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--code-ink);
}

.wrap {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}

.text-center {
  text-align: center;
}

.gradient-text {
  background: var(--gradient-prism);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.skip {
  position: absolute;
  top: -80px;
  left: 16px;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.2s ease;
}
.skip:focus {
  top: 16px;
}

/* --------------------------------------------------------------------------
   Announcement Bar
   -------------------------------------------------------------------------- */
.announcement {
  background: #091322;
  color: #c0d1ec;
  font-size: 0.875rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ann-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.badge-pill {
  background: rgba(0, 98, 255, 0.25);
  color: #45b8ff;
  border: 1px solid rgba(0, 210, 255, 0.35);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.ann-link {
  color: #00d2ff;
  font-weight: 600;
}
.ann-link:hover {
  color: #fff;
}

/* --------------------------------------------------------------------------
   Header & Navigation (Sleek Dark Navigation)
   -------------------------------------------------------------------------- */
.site-header {
  padding: 16px 0;
  background: #091322;
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(0, 98, 255, 0.3));
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
}

.brand-title strong {
  color: var(--cyan);
}

.brand-subtitle {
  font-size: 0.72rem;
  color: #8da2c4;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-weight: 500;
  font-size: 0.95rem;
}

nav a {
  color: #c0d1ec;
  text-decoration: none;
  transition: color 0.15s ease;
}

nav a:hover {
  color: #ffffff;
}

.nav-gh {
  display: flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  color: #ffffff;
  font-weight: 600;
  transition: all 0.18s var(--ease);
}

.nav-gh:hover {
  background: rgba(0, 98, 255, 0.25);
  border-color: var(--blue);
  color: #45b8ff;
  transform: translateY(-1px);
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #ffffff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.18s var(--ease);
  padding: 0;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; color: #e1ebfa; }

/* --------------------------------------------------------------------------
   Buttons & Action Inputs
   -------------------------------------------------------------------------- */
.actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s var(--ease);
}

.btn-primary {
  background: var(--blue);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 98, 255, 0.28);
}

.btn-primary:hover {
  background: var(--blue-hover);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 98, 255, 0.38);
  transform: translateY(-2px);
}

.btn-ghost {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

.btn-ghost:hover {
  background: var(--paper-subtle);
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
}

.install-pill-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1.5px solid var(--line);
  padding: 6px 10px 6px 14px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  width: fit-content;
}

.pill-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--slate-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.install-pill-box code {
  background: transparent;
  padding: 0;
  font-weight: 600;
  color: var(--blue);
}

.btn-copy-code {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  color: var(--slate);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
}

.btn-copy-code:hover {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: 64px 0 80px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.lede {
  font-size: 1.18rem;
  color: var(--slate);
  line-height: 1.6;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 14px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-item strong {
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--ink);
}

.stat-item span {
  font-size: 0.8rem;
  color: var(--slate-light);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--line);
}

/* --------------------------------------------------------------------------
   Hero Visor / Interactive Simulator
   -------------------------------------------------------------------------- */
.visor-wrap {
  position: relative;
}

.visor {
  margin: 0;
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-term);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.visor-head {
  background: var(--term-panel);
  border-bottom: 1px solid var(--term-border);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.visor-title-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.terminal-dots span:nth-child(1) { background: #ff5f56; }
.terminal-dots span:nth-child(2) { background: #ffbd2e; }
.terminal-dots span:nth-child(3) { background: #27c93f; }

.visor-title {
  color: var(--term-muted);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Scenario Segmented Controller */
.seg {
  display: inline-flex;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--term-border);
  padding: 3px;
  border-radius: var(--radius-pill);
}

.seg button {
  background: transparent;
  border: none;
  color: var(--term-muted);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.15s ease;
}

.seg button:hover {
  color: #fff;
}

.seg button[aria-checked="true"] {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 98, 255, 0.4);
}

/* Agents Status Bar */
.agents-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 12px 16px;
  background: rgba(15, 30, 52, 0.5);
  border-bottom: 1px solid var(--term-border);
}

.agent-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--term-text);
}

.agent-name {
  font-weight: 600;
}

.agent-time {
  color: var(--term-muted);
  font-size: 0.72rem;
}

.agent-status-badge {
  font-weight: 700;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

.status-ok { background: var(--ok); color: #000; }
.status-bad { background: var(--bad); color: #fff; }
.status-warn { background: var(--warn); color: #000; }

/* Terminal Body */
.terminal-body {
  padding: 18px 20px;
  min-height: 250px;
  max-height: 320px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--term-text);
  white-space: pre-wrap;
}

.t-prompt { color: var(--term-prompt); }
.t-ok { color: var(--ok); }
.t-bad { color: var(--bad); }
.t-warn { color: var(--warn); }
.t-dim { color: var(--term-muted); }
.t-strong { font-weight: 700; }
.t-user { color: #5fe0a6; font-weight: 700; }

/* Visor Footer */
.visor-foot {
  background: var(--term-panel);
  border-top: 1px solid var(--term-border);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.explain {
  color: #adc0de;
  font-size: 0.88rem;
  line-height: 1.45;
}

.verdict-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.v-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.btn-replay {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--term-border);
  color: var(--term-text);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.btn-replay:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* --------------------------------------------------------------------------
   Problem Strip
   -------------------------------------------------------------------------- */
.problem-strip {
  padding: 40px 0 60px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.problem-card {
  background: var(--surface);
  border: 1.5px solid var(--line);
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.problem-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
}

.problem-card-alert .problem-icon {
  background: var(--bad-bg);
  color: var(--bad);
}

.problem-card-solution .problem-icon {
  background: var(--ok-bg);
  color: var(--ok);
}

.problem-card p {
  color: var(--slate);
  font-size: 0.98rem;
}

/* --------------------------------------------------------------------------
   How It Works & Pipeline
   -------------------------------------------------------------------------- */
.how {
  padding: 80px 0;
  background: var(--paper-subtle);
  border-block: 1px solid var(--line);
}

.section-head {
  margin-bottom: 48px;
}

.subhead {
  font-size: 1.15rem;
  color: var(--slate);
  margin-top: 10px;
  max-width: 680px;
  margin-inline: auto;
}

.pipeline-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.stage-card {
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.stage-card:hover {
  transform: translateY(-3px);
  border-color: var(--blue);
}

.stage-step {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stage-card p {
  font-size: 0.92rem;
  color: var(--slate);
  line-height: 1.5;
}

.stage-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--slate);
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.mini-agents {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
}

.mini-chip {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   Features Grid
   -------------------------------------------------------------------------- */
.features {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feat-box {
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.feat-box:hover {
  transform: translateY(-3px);
  border-color: var(--blue);
  box-shadow: var(--shadow-md);
}

.feat-icon {
  font-size: 1.8rem;
}

.feat-box p {
  font-size: 0.95rem;
  color: var(--slate);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Install Section
   -------------------------------------------------------------------------- */
.install {
  padding: 80px 0;
  background: var(--paper-subtle);
  border-block: 1px solid var(--line);
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.install-col {
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.install-col:hover {
  transform: translateY(-3px);
  border-color: var(--blue);
  box-shadow: var(--shadow-md);
}

.install-col-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.install-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.install-col h3 {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 700;
}

.install-desc {
  font-size: 0.9rem;
  color: var(--slate);
  margin: 12px 0 16px;
  min-height: 48px;
  line-height: 1.5;
}

.cmd-block {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: var(--radius-md);
  padding: 12px 14px 14px;
  min-width: 0;
  margin: 0 0 16px 0;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cmd-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.cmd-dots {
  display: flex;
  gap: 5px;
}

.cmd-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.cmd-dots span:nth-child(1) { background: #ff5f56; }
.cmd-dots span:nth-child(2) { background: #ffbd2e; }
.cmd-dots span:nth-child(3) { background: #27c93f; }

.cmd-block pre {
  margin: 0;
  overflow-x: auto;
  max-width: 100%;
  flex: 1;
}

.cmd-block code {
  background: transparent;
  padding: 0;
  color: #dbe7fb;
  font-size: 0.78rem;
  line-height: 1.55;
  white-space: pre;
  font-family: var(--font-mono);
}

.copy-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  background: var(--blue);
  border-color: var(--blue);
}

.copy-btn.copied {
  background: var(--ok);
  color: #000;
  border-color: var(--ok);
}

.install-hint {
  font-size: 0.82rem;
  color: var(--slate-light);
  margin: auto 0 0 0;
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   CLI Reference / Use It Section
   -------------------------------------------------------------------------- */
.use {
  padding: 80px 0;
}

.use-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
}

.use-left {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cli-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.cli-tab {
  background: var(--surface);
  border: 1.5px solid var(--line);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.15s ease;
}

.cli-tab code {
  background: transparent;
  padding: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
}

.cli-tab:hover {
  border-color: var(--blue);
}

.cli-tab.active {
  background: var(--blue);
  border-color: var(--blue);
}

.cli-tab.active code {
  color: #ffffff;
}

.cli-display {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.cli-panel {
  display: none;
}

.cli-panel.active {
  display: block;
}

.cli-desc {
  color: var(--term-muted);
  font-size: 0.88rem;
  margin-bottom: 14px;
  font-family: var(--font-body);
}

.term-box {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--term-text);
  overflow-x: auto;
}

.artifacts-box {
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}

.artifacts-box p {
  color: var(--slate);
  font-size: 0.94rem;
}

.file-tree {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  display: grid;
  grid-template-columns: 140px 1fr;
  row-gap: 12px;
  column-gap: 14px;
  align-items: baseline;
}

.file-tree dt {
  color: var(--blue);
  font-weight: 700;
  white-space: nowrap;
}

.file-tree dd {
  margin: 0;
  color: var(--slate);
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   Proof Section
   -------------------------------------------------------------------------- */
.proof {
  padding: 80px 0;
  background: var(--paper-subtle);
  border-block: 1px solid var(--line);
}

.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.proof-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.checks-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.checks-list li {
  position: relative;
  padding-left: 28px;
  font-size: 0.96rem;
  color: var(--slate);
}

.checks-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--ok);
  font-weight: 800;
  font-size: 1.1rem;
}

.proof-verdict-box {
  display: flex;
  justify-content: center;
}

.verdict-card {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 30px;
  width: min(440px, 100%);
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-md);
}

.vc-badge {
  background: var(--ok);
  color: #000;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  width: fit-content;
}

.verdict-card p {
  font-size: 0.84rem;
  color: var(--slate-light);
  font-family: var(--font-mono);
}

.vc-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
}

.vc-foot {
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 0.82rem;
  color: var(--slate);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding: 40px 0;
  background: #091322;
  color: #92a4c2;
  font-size: 0.9rem;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-brand .brand-title {
  color: #ffffff;
}

.footer-brand p {
  font-size: 0.82rem;
  color: #798dae;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-links a {
  color: #c0d1ec;
}
.footer-links a:hover {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-grid,
  .use-layout,
  .proof-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .pipeline-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid,
  .install-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .header-row {
    flex-direction: column;
    align-items: flex-start;
  }
  nav {
    flex-wrap: wrap;
    gap: 16px;
  }
  .pipeline-grid,
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .file-tree {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

/* --------------------------------------------------------------------------
   Dark & Light Theme Mode System
   -------------------------------------------------------------------------- */

/* 1. System Dark Preference (when no explicit light mode set) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #f0f4fc;
    --slate: #9bb0cf;
    --slate-light: #7187a7;
    --paper: #070d18;
    --paper-subtle: #0b1424;
    --surface: #0f1e34;
    --surface-raised: #162844;
    --line: #1c3050;
    --line-strong: #27426e;
    --code-bg: #162844;
    --code-ink: #45b8ff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.6);
  }

  :root:not([data-theme="light"]) .theme-toggle .sun-icon {
    display: block;
    color: #ffd15c;
  }

  :root:not([data-theme="light"]) .theme-toggle .moon-icon {
    display: none;
  }

  :root:not([data-theme="light"]) .file-tree dt {
    color: var(--cyan);
  }
}

/* 2. Explicit Dark Mode (data-theme="dark") */
[data-theme="dark"] {
  --ink: #f0f4fc;
  --slate: #9bb0cf;
  --slate-light: #7187a7;
  --paper: #070d18;
  --paper-subtle: #0b1424;
  --surface: #0f1e34;
  --surface-raised: #162844;
  --line: #1c3050;
  --line-strong: #27426e;
  --code-bg: #162844;
  --code-ink: #45b8ff;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
  color: #ffd15c;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .file-tree dt {
  color: var(--cyan);
}

/* 3. Explicit Light Mode (data-theme="light") */
[data-theme="light"] {
  --ink: #0a1c3c;
  --slate: #44546c;
  --slate-light: #6a7c98;
  --paper: #f4f7fc;
  --paper-subtle: #edf2f9;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --line: #d8e0ee;
  --line-strong: #bac7de;
  --code-bg: #e5ebf7;
  --code-ink: #0a1c3c;
  --shadow-sm: 0 1px 3px rgba(10, 28, 60, 0.05);
  --shadow-md: 0 6px 20px rgba(10, 28, 60, 0.08);
  --shadow-lg: 0 14px 40px rgba(10, 28, 60, 0.12);
}

[data-theme="light"] .theme-toggle .sun-icon {
  display: none;
}

[data-theme="light"] .theme-toggle .moon-icon {
  display: block;
  color: #e1ebfa;
}

[data-theme="light"] .file-tree dt {
  color: var(--blue);
}