/* ==========================================================================
   MCP feature page (/mcp/). Loaded after style.css via `extraCss`.
   Everything is scoped to mcp-/chat- classes so other pages are untouched.

   Two experiences share one DOM:
   - No scripting: the scenario switcher is a CSS radio group, every transcript
     is fully rendered, and the approval step is a checkbox toggle.
   - Scripting: mcp.js adds `.is-animated` to #chat-demo and the transcript
     streams in, with a prompt bar for free-form questions.
   ========================================================================== */

:root {
  --mcp-ink: #0f1d16;
  --mcp-court: #2f6b4f;
  --mcp-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --mcp-panel: #0e1a15;
}

/* ===== Shared bits (mirrors landing.css, which is home-only) ===== */
.eyebrow {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.section-lead {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 0 8px;
}

.js-only { display: none; }
.js .js-only { display: block; }
.js-only-inline { display: none; }
.js .js-only-inline { display: inline-flex; }
.no-js-only { display: block; }
.js .no-js-only { display: none; }

.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--mcp-ease), transform 0.65s var(--mcp-ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.container-narrow {
  max-width: 760px;
}

.mcp-demo h2,
.mcp-control h2,
.mcp-faq h2,
.mcp-cta h2 {
  text-align: center;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

/* ===== Hero ===== */
.mcp-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 84px;
  background: linear-gradient(168deg, #f4faf6 0%, var(--color-bg) 60%);
  border-bottom: 1px solid var(--color-border);
}

.mcp-hero-glow {
  position: absolute;
  top: -220px;
  right: -160px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22, 163, 74, 0.16), transparent 68%);
  pointer-events: none;
}

.mcp-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.mcp-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.55);
  animation: mcp-pulse 2.2s ease-out infinite;
}

@keyframes mcp-pulse {
  70% { box-shadow: 0 0 0 10px rgba(22, 163, 74, 0); }
  100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0); }
}

.mcp-hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.mcp-hero-sub {
  font-size: 1.08rem;
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: 26px;
}

.mcp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 0;
}

.mcp-hero-connect {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
}

.mcp-connect-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.mcp-url-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px 12px;
  margin-bottom: 18px;
}

.mcp-url-row code {
  flex: 1;
  min-width: 0;
  font-size: 0.83rem;
  word-break: break-all;
  color: var(--color-primary-dark);
}

.mcp-copy {
  flex: none;
  align-items: center;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.mcp-copy:hover { background: var(--color-primary-dark); }
.mcp-copy.is-copied { background: var(--mcp-court); }

.mcp-connect-steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

/* ===== Chat demo ===== */
.mcp-demo {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.chat-demo {
  margin-top: 28px;
}

.chat-radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.chat-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 18px;
}

.chat-tabs label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.chat-tabs label:hover {
  border-color: rgba(22, 163, 74, 0.45);
  color: var(--color-text);
}

#mcp-sc-1:checked ~ .chat-tabs label[for="mcp-sc-1"],
#mcp-sc-2:checked ~ .chat-tabs label[for="mcp-sc-2"],
#mcp-sc-3:checked ~ .chat-tabs label[for="mcp-sc-3"],
#mcp-sc-4:checked ~ .chat-tabs label[for="mcp-sc-4"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

#mcp-sc-1:focus-visible ~ .chat-tabs label[for="mcp-sc-1"],
#mcp-sc-2:focus-visible ~ .chat-tabs label[for="mcp-sc-2"],
#mcp-sc-3:focus-visible ~ .chat-tabs label[for="mcp-sc-3"],
#mcp-sc-4:focus-visible ~ .chat-tabs label[for="mcp-sc-4"] {
  outline: 3px solid rgba(22, 163, 74, 0.5);
  outline-offset: 2px;
}

.chat-window {
  max-width: 780px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.chat-titlebar {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 18px;
  background: var(--mcp-panel);
  color: #e7f3ec;
  font-size: 0.82rem;
}

.chat-bubble-icon {
  flex: none;
  width: 17px;
  height: 17px;
  color: #86e0ac;
}

.chat-title { font-weight: 600; }

/* Only the selected thread renders — pure CSS, works with no scripting. */
.chat-thread { display: none; }
#mcp-sc-1:checked ~ .chat-window .chat-thread[data-scenario="1"],
#mcp-sc-2:checked ~ .chat-window .chat-thread[data-scenario="2"],
#mcp-sc-3:checked ~ .chat-window .chat-thread[data-scenario="3"],
#mcp-sc-4:checked ~ .chat-window .chat-thread[data-scenario="4"] {
  display: block;
}

.chat-thread {
  padding: 22px 20px 6px;
}

.msg {
  margin-bottom: 18px;
  max-width: 88%;
}

.msg p { margin-bottom: 10px; }
.msg p:last-child { margin-bottom: 0; }

.msg-user {
  width: fit-content;
  margin-left: auto;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 16px;
  border-radius: 16px 16px 4px 16px;
  font-weight: 500;
}

.msg-bot {
  margin-right: auto;
  max-width: 100%;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  padding: 14px 16px;
  border-radius: 16px 16px 16px 4px;
  font-size: 0.95rem;
}

.msg-inline {
  max-width: 60%;
  margin: 0 0 14px auto;
  font-size: 0.92rem;
}

/* Tool call chips */
.tool-run {
  list-style: none;
  display: grid;
  gap: 6px;
  margin: 0 0 12px;
}

.tool-run li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  background: rgba(22, 163, 74, 0.07);
  border: 1px solid rgba(22, 163, 74, 0.16);
  border-radius: 8px;
  padding: 6px 10px;
}

.tool-run li::before {
  content: '✓';
  flex: none;
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
}

.tool-run li::after {
  content: attr(data-tool);
  margin-left: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  color: var(--color-primary-dark);
}

/* Result cards */
.result-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-surface);
  margin: 12px 0;
  font-size: 0.88rem;
}

.rc-head {
  padding: 8px 12px;
  background: var(--color-surface-soft);
  border-bottom: 1px solid var(--color-border);
  font-weight: 700;
  font-size: 0.8rem;
}

.rc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
}

.rc-row span { color: var(--color-text-muted); }
.rc-row b { text-align: right; }
.rc-ok b { color: var(--color-primary-dark); }
.rc-warn { background: #fffbeb; }
.rc-warn b { color: #b45309; }
.rc-neutral b { color: var(--color-text); }

.rc-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  background: var(--color-primary-light);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

/* TennisLink preview */
.tl-preview {
  margin: 14px 0;
}

.tl-preview figcaption {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.tl-shot {
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.1);
  font-size: 0.86rem;
}

.tl-bar {
  background: #1e3a5f;
  color: #fff;
  padding: 8px 12px;
  font-size: 0.78rem;
  font-weight: 600;
}

.tl-line {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-bottom: 1px dashed #e2e8f0;
}

.tl-line span { flex: 1; color: #475569; }
.tl-line b { font-variant-numeric: tabular-nums; }

.tl-line em {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 5px;
  font-style: normal;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
}

.tl-line .win { background: #16a34a; }
.tl-line .loss { background: #94a3b8; }

.tl-total {
  display: flex;
  justify-content: space-between;
  padding: 10px 12px;
  background: #f1f5f9;
  font-weight: 700;
}

.confirm-q {
  font-weight: 600;
}

/* Approval step: checkbox-driven, so it works without scripting. */
.approve-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 12px 0 4px;
}

.approve-yes {
  padding: 9px 22px;
  font-size: 0.92rem;
}

.approve-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.approve-after {
  display: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

#mcp-approve:checked ~ .approve-after { display: block; }
#mcp-approve:checked ~ .approve-actions { display: none; }

#mcp-approve:focus-visible ~ .approve-actions .approve-yes {
  outline: 3px solid rgba(22, 163, 74, 0.5);
  outline-offset: 2px;
}

.tool-run-done li::before { content: '✓'; }

/* Raw tool calls */
.tool-detail {
  margin-top: 12px;
  border-top: 1px solid var(--color-border);
  padding-top: 10px;
}

.tool-detail summary {
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.tool-detail pre {
  margin-top: 10px;
  padding: 12px;
  background: var(--mcp-panel);
  color: #d5efe0;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 0.76rem;
  line-height: 1.55;
}

/* Prompt bar (scripting only).
   These set their own display, so the generic `.js-only` rule can't hide them —
   they opt out with an explicit no-scripting rule instead. */
html:not(.js) .chat-input,
html:not(.js) .chat-suggest,
.chat-suggest[hidden] {
  display: none;
}

.chat-input {
  display: flex;
  gap: 8px;
  padding: 14px 18px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-soft);
}

.chat-input input {
  flex: 1;
  min-width: 0;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.92rem;
  background: #fff;
}

.chat-input input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.16);
}

.chat-input .btn { padding: 11px 20px; }

.chat-suggest {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 18px 16px;
  background: var(--color-surface-soft);
}

.chat-suggest button {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px dashed rgba(22, 163, 74, 0.4);
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.chat-suggest button:hover { background: var(--color-primary-light); }

.chat-note {
  max-width: 780px;
  margin: 14px auto 0;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* --- Streaming behaviour, only once mcp.js takes over --- */
/* `.body-part` is added by mcp.js to everything in a bot bubble that follows
   its tool list, so the reply can't appear before the calls finish running. */
.chat-demo.is-animated .msg,
.chat-demo.is-animated .tool-run li,
.chat-demo.is-animated .body-part {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s var(--mcp-ease), transform 0.4s var(--mcp-ease);
}

.chat-demo.is-animated .msg.is-shown,
.chat-demo.is-animated .tool-run li.is-shown,
.chat-demo.is-animated .body-part.is-shown {
  opacity: 1;
  transform: none;
}

.chat-demo.is-animated .tool-run li.is-running::before {
  content: '';
  background: transparent;
  border: 2px solid rgba(22, 163, 74, 0.35);
  border-top-color: var(--color-primary);
  animation: mcp-spin 0.7s linear infinite;
}

@keyframes mcp-spin { to { transform: rotate(360deg); } }

.typing {
  display: inline-flex;
  gap: 4px;
  padding: 12px 16px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: 16px 16px 16px 4px;
  margin-bottom: 18px;
}

.typing i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
  animation: mcp-bounce 1.1s ease-in-out infinite;
}

.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }

@keyframes mcp-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.45; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* ===== Guardrails ===== */
.mcp-control {
  padding: 84px 0;
  background: var(--color-bg-alt);
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.control-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.cc-icon { font-size: 1.6rem; margin-bottom: 10px; }
.control-card h3 { font-size: 1.02rem; margin-bottom: 6px; }
.control-card p { font-size: 0.9rem; color: var(--color-text-muted); }

/* ===== FAQ ===== */
.mcp-faq { padding: 84px 0; }

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 16px 18px;
  margin-top: 12px;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-item p {
  margin-top: 10px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.faq-item code {
  font-size: 0.82rem;
  word-break: break-all;
}

/* ===== CTA ===== */
.mcp-cta {
  padding: 84px 0 96px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg) 0%, #eef7f0 100%);
  border-top: 1px solid var(--color-border);
}

.mcp-cta p { color: var(--color-text-muted); margin-bottom: 18px; }
.mcp-cta p:last-child { margin-bottom: 0; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .mcp-hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .mcp-hero { padding: 52px 0 60px; }
}

@media (max-width: 640px) {
  .chat-tabs label { font-size: 0.8rem; padding: 8px 12px; }
  .msg { max-width: 95%; }
  .tool-run li::after { display: none; }
  .chat-input { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .chat-demo.is-animated .msg,
  .chat-demo.is-animated .tool-run li,
  .chat-demo.is-animated .body-part { opacity: 1; transform: none; transition: none; }
  .pulse-dot, .typing i { animation: none; }
  html { scroll-behavior: auto; }
}