/* ClawDrop — style.css */
/* A hacker's README brought to life */

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

:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --bg-code: #1c2128;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #4ade80;
  --accent-hover: #22c55e;
  --border: #30363d;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', Consolas, 'Liberation Mono', monospace;
  --max-w: 720px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* --- Layout --- */

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }

section { padding: 3.5rem 0; }
section + section { border-top: 1px solid var(--border); }

/* --- Typography --- */

h1 { font-size: 2rem; font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 1rem; }
h2 { font-size: 1.4rem; font-weight: 600; line-height: 1.3; margin-bottom: 0.75rem; color: var(--text); }
h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-muted); }
p.lead { color: var(--text); font-size: 1.125rem; }

strong { color: var(--text); font-weight: 600; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* --- Navigation --- */

nav {
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.nav-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent);
  text-decoration: none;
}
.nav-brand:hover { color: var(--accent-hover); text-decoration: none; }

.nav-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* --- Hero --- */

.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.proto-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 6px;
  padding: 0.3rem 0.75rem;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.hero h1 { font-size: 2.25rem; margin-bottom: 0.5rem; }
.hero .subtitle {
  color: var(--text-muted);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

/* --- Terminal --- */

.terminal {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
}

.terminal-header {
  background: var(--bg-alt);
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.terminal-dot:nth-child(1) { background: #ff5f57; }
.terminal-dot:nth-child(2) { background: #febc2e; }
.terminal-dot:nth-child(3) { background: #28c840; }

.terminal-body {
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  min-height: 80px;
}

.terminal-line { white-space: nowrap; }

.terminal-prompt { color: var(--accent); }
.terminal-cmd { color: var(--text); }
.terminal-output { color: var(--accent); opacity: 0.9; }

/* Typing animation */
.typing-line {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  width: 0;
  animation: typing 2s steps(48, end) 0.5s forwards;
}

.typing-cursor::after {
  content: '\2588';
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

.output-line {
  opacity: 0;
  animation: fadeIn 0.1s 2.8s forwards;
}

@keyframes typing {
  to { width: 100%; }
}

@keyframes blink {
  50% { opacity: 0; }
}

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

@media (prefers-reduced-motion: reduce) {
  .typing-line { width: 100%; animation: none; }
  .output-line { opacity: 1; animation: none; }
  .typing-cursor::after { animation: none; }
}

/* --- Code blocks --- */

.code-block {
  position: relative;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin: 1rem 0 1.5rem;
  overflow-x: auto;
}

.code-block pre {
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
}

.code-block .label {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-radius: 0 0 4px 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s;
}

.code-block:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--text); border-color: var(--text-muted); }
.copy-btn.copied { color: var(--accent); border-color: var(--accent); }

/* --- Lists --- */

.anti-list {
  list-style: none;
  padding: 0;
}

.anti-list li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.anti-list li:last-child { border-bottom: none; }

.anti-list li::before {
  content: '\00d7';
  position: absolute;
  left: 0;
  color: #f87171;
  font-weight: 700;
  font-size: 1.1rem;
}

/* --- Tables --- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.875rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

th { color: var(--text-muted); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }
td { color: var(--text); }

/* --- Footer --- */

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
}

footer .container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
}

.footer-links a { font-size: 0.8125rem; color: var(--text-muted); }
.footer-links a:hover { color: var(--text); }

.footer-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* --- Page content (subpages) --- */

.page-content { padding: 2.5rem 0 3rem; }
.page-content h1 { margin-bottom: 1.5rem; }
.page-content h2 { margin-top: 2rem; }

.page-content ul, .page-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

.page-content li { margin-bottom: 0.4rem; }

/* --- Protocol Grid --- */

.protocol-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.protocol-op {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

.protocol-op h3 {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.protocol-op .op-desc {
  font-size: 0.8125rem;
  margin-bottom: 0.75rem;
}

.protocol-op .code-block {
  margin: 0;
  border: none;
  background: var(--bg-alt);
}

.protocol-op .code-block pre {
  font-size: 0.75rem;
  padding: 0.75rem;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .protocol-grid { grid-template-columns: 1fr; }
}

/* --- Install Hero (full-bleed top section) --- */

.install-hero {
  background: linear-gradient(180deg, rgba(74, 222, 128, 0.04) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  padding: 5rem 1.5rem 4rem;
  text-align: center;
}

.install-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.install-h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text);
}

.install-sub {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 2.5rem;
}

.install-block {
  max-width: 560px;
  margin: 0 auto;
}

.install-terminal {
  background: var(--bg-code);
  border: 2px solid var(--accent);
  border-radius: 14px;
  overflow: hidden;
  box-shadow:
    0 0 40px rgba(74, 222, 128, 0.1),
    0 0 80px rgba(74, 222, 128, 0.05),
    0 4px 24px rgba(0, 0, 0, 0.3);
}

.install-terminal-header {
  background: var(--bg-alt);
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}

.install-terminal-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-left: auto;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.install-terminal-body {
  padding: 2rem 2.25rem;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent);
  text-align: left;
  letter-spacing: -0.01em;
}

.install-cmd {
  user-select: all;
}

.install-copy-btn {
  display: block;
  width: 100%;
  margin-top: 1rem;
  padding: 1rem 2rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  box-shadow: 0 2px 12px rgba(74, 222, 128, 0.2);
}

.install-copy-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(74, 222, 128, 0.3);
}

.install-copy-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 6px rgba(74, 222, 128, 0.15);
}

.install-copy-btn.copied {
  background: var(--accent-hover);
}

.install-after {
  margin-top: 2rem;
  font-size: 1rem;
  color: var(--text-muted);
}

.install-arrow {
  margin-top: 2rem;
  font-size: 1.5rem;
  color: var(--text-muted);
  opacity: 0.4;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

.hero-h2 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
  .install-hero { padding: 3.5rem 1.25rem 3rem; }
  .install-h1 { font-size: 1.85rem; }
  .install-terminal-body { font-size: 1rem; padding: 1.5rem; }
  .install-copy-btn { font-size: 0.95rem; padding: 0.85rem 1.5rem; }
  .install-sub { font-size: 1rem; }
  .hero-h2 { font-size: 1.6rem; }
}

/* --- Agent Chat --- */

.agent-chat .terminal-body {
  min-height: auto;
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: auto;
  letter-spacing: 0.05em;
}

.chat-body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.5;
}

.chat-line {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
}

.chat-role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  width: 3rem;
  text-align: right;
  color: var(--text-muted);
}

.chat-user .chat-role { color: var(--text-muted); }
.chat-agent .chat-role { color: var(--accent); }

.chat-msg { color: var(--text); }
.chat-user .chat-msg { color: var(--text-muted); }

.chat-link {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(74, 222, 128, 0.3);
  text-underline-offset: 2px;
}
.chat-link:hover { text-decoration-color: var(--accent); }

.chat-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* --- Large Agent Chat (hero demo) --- */

.agent-chat-lg {
  max-width: 720px;
}

.agent-chat-lg .chat-body {
  font-size: 1.05rem;
  gap: 1rem;
  padding: 1.5rem 1.75rem;
}

.agent-chat-lg .chat-role {
  font-size: 0.8rem;
  width: 3.5rem;
}

.agent-chat-lg .chat-meta {
  font-size: 0.85rem;
}

.agent-chat-lg .chat-link {
  font-weight: 600;
}

/* Staggered fade-in for chat lines */
.agent-chat-lg .output-line {
  opacity: 0;
  transform: translateY(8px);
  animation: chatFadeIn 0.4s ease forwards;
}

@keyframes chatFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Typing indicator pulse on agent lines before they appear */
.agent-chat-lg .chat-agent.output-line .chat-msg {
  position: relative;
}

/* Subtle glow on links */
.agent-chat-lg .chat-link {
  text-shadow: 0 0 8px rgba(74, 222, 128, 0.15);
  transition: text-shadow 0.2s;
}
.agent-chat-lg .chat-link:hover {
  text-shadow: 0 0 16px rgba(74, 222, 128, 0.3);
}

@media (max-width: 768px) {
  .agent-chat-lg .chat-body { font-size: 0.925rem; padding: 1.25rem; gap: 0.85rem; }
  .agent-chat-lg .chat-role { font-size: 0.7rem; width: 3rem; }
}

/* --- Flow Steps --- */

.flow-steps {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.flow-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.flow-num {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  margin-top: 0.15rem;
}

.flow-step strong { display: block; margin-bottom: 0.15rem; }
.flow-step p { margin-bottom: 0; font-size: 0.875rem; }

/* --- Preview Grid --- */

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.preview-card {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

.preview-card h3 {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.preview-card p {
  font-size: 0.8125rem;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .preview-grid { grid-template-columns: 1fr; }
  .chat-role { width: 2.5rem; font-size: 0.625rem; }
  .chat-body { font-size: 0.8125rem; }
}

/* --- Misc --- */

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.cta-repeat {
  text-align: center;
  padding: 2rem 0;
}

.ghost-btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: border-color 0.15s, color 0.15s;
}
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.stack-line {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1rem 0;
}

/* --- Responsive --- */

@media (max-width: 768px) {
  .hero h1 { font-size: 1.75rem; }
  .hero .subtitle { font-size: 1rem; }
  section { padding: 2.5rem 0; }
  h2 { font-size: 1.25rem; }
  .terminal { max-width: 100%; }
  .terminal-body { font-size: 0.75rem; padding: 0.75rem 1rem; }
  .code-block pre { font-size: 0.75rem; }
  .copy-btn { opacity: 1; }
  footer .container { flex-direction: column; }
  nav .container { gap: 0.25rem; }
  .nav-links { gap: 0.75rem; }
  .nav-links a { font-size: 0.8rem; }
}