/* ============================================
   KVATASK SITE — /ai (MCP флагман)
   ============================================ */

/* ===== Hero ===== */
.ai-hero {
  position: relative;
  padding: 140px 0 40px;
  overflow: hidden;
  text-align: center;
}

.ai-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 30%, rgba(99, 102, 241, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 70% 50% at 75% 60%, rgba(6, 182, 212, 0.10) 0%, transparent 70%);
  z-index: -1;
}

.ai-hero-inner {
  max-width: 880px;
  margin: 0 auto;
}

.ai-hero h1 {
  font-size: var(--display-1);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  font-family: var(--font-display);
}

.ai-hero h1 .accent {
  background: var(--gradient-mcp);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ai-hero-sub {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0 auto 32px;
  max-width: 720px;
}

.ai-hero-clients {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 36px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.ai-hero-client {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-primary);
  font-weight: 500;
  color: var(--text-secondary);
}

/* ===== MCP Console section ===== */
.ai-console {
  padding: 24px 0 80px;
}

.ai-console-wrap {
  max-width: 1080px;
  margin: 0 auto;
}

/* ===== Prompts grid ===== */
.ai-prompts {
  padding: 100px 0;
  background: var(--bg-primary);
  transition: background 0.4s;
}

.ai-prompts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 12px;
}

.ai-prompt {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 24px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-prompt:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-muted);
}

.ai-prompt-name {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-muted);
  padding: 4px 10px;
  border-radius: var(--radius);
  align-self: flex-start;
}

.ai-prompt h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.3;
}

.ai-prompt p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
  flex: 1;
}

/* ===== Activity visibility section ===== */
.ai-activity {
  padding: 100px 0;
}

.ai-activity-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.ai-activity-text h2 {
  font-size: var(--display-2);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  font-family: var(--font-display);
}

.ai-activity-text p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.ai-activity-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.ai-activity-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.ai-activity-list li::before {
  content: '🤖';
  font-size: 1.125rem;
  line-height: 1.2;
}

.ai-activity-list li strong {
  color: var(--text);
  font-weight: 600;
}

.ai-activity-list code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

.ai-activity-mockup .mu-frame {
  max-width: 100%;
}

/* ===== Project-scoped keys ===== */
.ai-keys {
  padding: 100px 0;
  background: var(--bg-primary);
  transition: background 0.4s;
}

.ai-keys-inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}

.ai-keys-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 40px;
  text-align: left;
}

.ai-key-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
}

.ai-key-card.bad {
  border-color: rgba(239, 68, 68, 0.3);
}

.ai-key-card.good {
  border-color: rgba(16, 185, 129, 0.3);
  background: linear-gradient(135deg, var(--card), rgba(16, 185, 129, 0.04));
}

.ai-key-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
}

.ai-key-card.bad h3 { color: var(--danger); }
.ai-key-card.good h3 { color: var(--success); }

.ai-key-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.ai-key-card code {
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

/* ===== Setup configs ===== */
.ai-setup {
  padding: 100px 0;
}

.ai-setup-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: var(--radius-lg);
  margin: 32px auto 24px;
  max-width: fit-content;
  flex-wrap: wrap;
}

.ai-setup-tab {
  padding: 10px 18px;
  background: none;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, color 0.2s;
}

.ai-setup-tab.active {
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.ai-setup-panel {
  max-width: 880px;
  margin: 0 auto;
  display: none;
}

.ai-setup-panel.active {
  display: block;
}

.ai-setup-steps {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ai-setup-steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  align-items: flex-start;
}

.ai-setup-steps li::before {
  content: counter(step);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-muted);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-mono);
}

.ai-setup-steps strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.ai-setup-steps span {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.ai-code {
  background: #0a0d14;
  border: 1px solid #1e2230;
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: #c9d1e0;
  overflow-x: auto;
  position: relative;
  margin-top: 8px;
}

.ai-code-copy {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background 0.2s;
}

.ai-code-copy:hover {
  background: rgba(99, 102, 241, 0.25);
}

.ai-code-copy.copied {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.4);
}

.ai-code .tok-key { color: #93c5fd; }
.ai-code .tok-str { color: #a3e635; }
.ai-code .tok-pun { color: #6b7280; }

.ai-code pre {
  margin: 0;
  white-space: pre;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .ai-prompts-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-activity-grid { grid-template-columns: 1fr; gap: 36px; }
  .ai-keys-cards { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .ai-hero { padding: 100px 0 24px; }
  .ai-hero-sub { font-size: 1.0625rem; }
  .ai-console { padding: 16px 0 56px; }
  .ai-prompts, .ai-activity, .ai-keys, .ai-setup { padding: 64px 0; }
  .ai-prompts-grid { grid-template-columns: 1fr; }
  .ai-prompt { padding: 20px; }
}

@media (max-width: 480px) {
  .ai-hero { padding: 80px 0 16px; }
  .ai-prompts, .ai-activity, .ai-keys, .ai-setup { padding: 48px 0; }
  .ai-setup-tabs { flex-wrap: wrap; }
  .ai-code { font-size: 0.75rem; padding: 12px 14px; }
  .ai-code-copy { top: 6px; right: 6px; padding: 3px 8px; }
}