/* ============================================
   Always-On-CallSRE Docs
   Exact Match: Claude.com Dark Theme Signature
   ============================================ */

:root {
    --bg-main: #191715;
    --bg-nav: #161412;
    --bg-subnav: #1B1917;
    --bg-card: #22201D;
    --bg-btn-sec: #2D2A27;
    --bg-integration: #161412;
    
    --text-primary: #F3F2EE;
    --text-secondary: #9E9A94;
    --text-tertiary: #73706A;
    
    --border: #33312E;
    --clay: #BA6E56;
    
    --font-serif: 'Newsreader', 'Source Serif 4', Georgia, serif;
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--clay);
    color: #fff;
}

a { color: var(--text-primary); text-decoration: none; }

/* ---- Navigation ---- */
#navbar { background: var(--bg-nav); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.nav-inner { max-width: 1400px; margin: 0 auto; padding: 0.875rem 2rem; display: flex; justify-content: space-between; align-items: center; }
.nav-left { display: flex; align-items: center; gap: 0.5rem; }
.nav-logo-icon { width: 22px; height: 22px; }
.nav-logo { font-family: var(--font-serif); font-size: 1.35rem; font-weight: 500; letter-spacing: -0.02em; color: var(--text-primary); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a:not(.btn) { font-size: 0.9rem; color: var(--text-secondary); transition: color 0.2s; }
.nav-links a:not(.btn):hover { color: var(--text-primary); }
.btn-nav { border: 1px solid var(--border); padding: 0.4rem 1rem; border-radius: 6px; font-size: 0.85rem; background: transparent; transition: background 0.2s; }
.btn-nav:hover { background: var(--bg-card); }

/* ---- Sub Nav ---- */
.sub-nav { background: var(--bg-subnav); border-bottom: 1px solid var(--border); padding: 1rem 2rem; }
.sub-nav-inner { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-secondary); }
.sub-nav-action { cursor: pointer; transition: color 0.2s; }
.sub-nav-action:hover { color: var(--text-primary); }

/* ---- Hero Section ---- */
#hero { max-width: 1400px; margin: 0 auto; padding: 6rem 2rem 5rem; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero-content h1 { font-family: var(--font-serif); font-size: 4.5rem; font-weight: 400; line-height: 1.05; letter-spacing: -0.03em; margin-bottom: 1.5rem; color: var(--text-primary); }
.hero-desc { font-size: 1.25rem; color: var(--text-secondary); line-height: 1.6; max-width: 500px; margin-bottom: 2.5rem; }
.hero-actions { display: flex; gap: 1rem; }
.btn { display: inline-block; padding: 0.8rem 1.25rem; border-radius: 6px; font-size: 0.95rem; font-weight: 500; cursor: pointer; transition: opacity 0.2s, background 0.2s; }
.btn-primary { background: var(--text-primary); color: var(--bg-main); }
.btn-primary:hover { opacity: 0.9; }
.btn-secondary { background: var(--bg-btn-sec); color: var(--text-primary); }
.btn-secondary:hover { background: #383531; }
.hero-illustration { display: flex; justify-content: flex-end; align-items: center; }
.hero-illustration svg { width: 100%; max-width: 450px; }

/* ---- Integrations Bar ---- */
.integrations { background: var(--bg-integration); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 2rem; }
.integrations-inner { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; }
.integration-logo { font-family: var(--font-sans); font-weight: 600; font-size: 1.1rem; color: var(--text-primary); display: flex; align-items: center; gap: 0.5rem; }

/* ---- Sections ---- */
.section { padding: 6rem 2rem; max-width: 1400px; margin: 0 auto; }
.section-grid { display: grid; grid-template-columns: 350px 1fr; gap: 4rem; }
.section-header h2 { font-family: var(--font-serif); font-size: 2.5rem; font-weight: 400; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 1rem; }
.section-header p { font-size: 1.1rem; color: var(--text-secondary); }
.section-header-full { max-width: 700px; margin-bottom: 4rem; }
.section-header-full h2 { font-family: var(--font-serif); font-size: 3rem; font-weight: 400; letter-spacing: -0.02em; margin-bottom: 1rem; }
.section-header-full p { font-size: 1.25rem; color: var(--text-secondary); }

/* ---- Story Content ---- */
.story-content p { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 1.5rem; line-height: 1.7; }
.story-lead { font-size: 1.25rem !important; color: var(--text-primary) !important; font-weight: 500; }
.story-highlight { background: var(--bg-card); padding: 2.5rem; border-radius: 8px; margin-top: 3rem; border-left: 4px solid var(--clay); }
.story-highlight h3 { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 400; margin-bottom: 1rem; color: var(--text-primary); }
.story-highlight p { margin-bottom: 0; font-size: 1.05rem; }
.story-highlight strong { color: var(--text-primary); font-weight: 500; }

/* ---- Flowchart (Custom CSS implementation of Image) ---- */
.flowchart-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 2rem;
}

.fc-node-wrapper { display: flex; flex-direction: column; align-items: center; width: 100%; }

.fc-node {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1rem 2rem;
    border-radius: 4px;
    font-size: 1rem;
    color: var(--text-primary);
    text-align: center;
    position: relative;
    z-index: 2;
    transition: border-color 0.2s;
    min-width: 320px;
}

.fc-node:hover { border-color: var(--text-secondary); }

.fc-trigger { border-color: var(--text-secondary); }

.fc-orchestrator {
    background: var(--clay);
    border-color: var(--clay);
    color: var(--text-primary);
    font-weight: 500;
}
.fc-orchestrator .fc-file { display: block; font-family: var(--font-mono); font-size: 0.8rem; opacity: 0.8; font-weight: 400; margin-top: 0.25rem; }

.fc-manager { border: 1px solid var(--clay); color: var(--clay); }
.fc-subagent { border-style: dashed; }
.fc-mcp { background: #2A212E; border-color: #5B4B63; }
.fc-hypothesis { font-style: italic; background: transparent; border: 1px solid var(--border); }

/* Vertical connecting line */
.fc-line-down {
    width: 1px;
    height: 30px;
    background: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.fc-line-down::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: -4px;
    border-width: 5px 4.5px 0 4.5px;
    border-style: solid;
    border-color: var(--text-secondary) transparent transparent transparent;
}

.fc-line-down.fc-short { height: 20px; }

.fc-pipeline {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

/* Branching lines */
.fc-branch-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: -1px;
}

.fc-branch-line {
    display: flex;
    width: 350px;
    height: 15px;
}

.fc-branch-left {
    flex: 1;
    border-top: 1px solid var(--text-secondary);
    border-right: 1px solid var(--text-secondary);
}

.fc-branch-right {
    flex: 1;
    border-top: 1px solid var(--text-secondary);
}

.fc-subnodes {
    display: flex;
    justify-content: center;
    gap: 30px;
    width: 100%;
}

.fc-subnode-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.fc-subnode-wrapper .fc-node { min-width: 250px; font-size: 0.9rem; padding: 0.8rem 1.5rem; }

.fc-branch-line-bottom {
    display: flex;
    width: 350px;
    height: 15px;
    margin-top: -1px;
}

.fc-branch-line-bottom .fc-branch-left {
    border-top: none;
    border-bottom: 1px solid var(--text-secondary);
}

.fc-branch-line-bottom .fc-branch-right {
    border-top: none;
    border-bottom: 1px solid var(--text-secondary);
    border-left: 1px solid var(--text-secondary);
}

/* ---- Divider ---- */
.divider { max-width: 1400px; margin: 0 auto; height: 1px; background: var(--border); }

/* ---- Agent List ---- */
.agent-list { display: flex; flex-direction: column; border-top: 1px solid var(--border); }
.agent-item { display: grid; grid-template-columns: 80px 1fr; padding: 3rem 0; border-bottom: 1px solid var(--border); }
.agent-num { font-family: var(--font-serif); font-size: 2.5rem; color: var(--clay); line-height: 1; opacity: 0.8; }
.agent-info h3 { font-family: var(--font-sans); font-weight: 500; font-size: 1.25rem; margin-bottom: 0.5rem; }
.agent-info p { color: var(--text-secondary); font-size: 1.05rem; max-width: 650px; margin-top: 1rem; }
.mono-tag { display: inline-block; font-family: var(--font-mono); font-size: 0.75rem; color: var(--clay); border: 1px solid var(--border); padding: 0.2rem 0.6rem; border-radius: 4px; }

/* ---- Code Blocks ---- */
.code-block { margin-bottom: 3rem; }
.code-block:last-child { margin-bottom: 0; }
.code-header { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1.5rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border); }
.code-item { margin-bottom: 1.5rem; }
.code-item code { font-family: var(--font-mono); font-size: 0.9rem; color: var(--text-primary); }
.code-item p { color: var(--text-secondary); font-size: 0.95rem; margin-top: 0.5rem; max-width: 500px; }

/* ---- Steps (Integration) ---- */
.steps-list { max-width: 800px; }
.step-row { display: flex; gap: 2rem; margin-bottom: 3rem; }
.step-row:last-child { margin-bottom: 0; }
.step-num { font-family: var(--font-serif); font-size: 2rem; color: var(--clay); opacity: 0.6; line-height: 1; }
.step-body h3 { font-size: 1.15rem; font-weight: 500; margin-bottom: 1rem; }
.step-body p { color: var(--text-secondary); margin-bottom: 1rem; font-size: 0.95rem; }
pre { background: var(--bg-card); border: 1px solid var(--border); padding: 1.25rem; border-radius: 6px; overflow-x: auto; }
pre code { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-primary); }

/* ---- Footer ---- */
footer { background: var(--bg-nav); border-top: 1px solid var(--border); padding: 4rem 2rem; }
.footer-inner { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-between; align-items: flex-end; }
.footer-logo { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-serif); font-size: 1.25rem; color: var(--text-primary); margin-bottom: 1rem; }
.footer-links { display: flex; gap: 1.5rem; margin-bottom: 1rem; }
.footer-links a { color: var(--text-secondary); font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--text-primary); }
.footer-copy { color: var(--text-tertiary); font-size: 0.85rem; }

/* Responsive */
@media (max-width: 1024px) {
    .section-grid { grid-template-columns: 1fr; gap: 2rem; }
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-illustration { justify-content: center; margin-top: 2rem; }
    .hero-actions { justify-content: center; }
    .hero-desc { margin-left: auto; margin-right: auto; }
}

@media (max-width: 768px) {
    #hero h1 { font-size: 3rem; }
    .nav-links { display: none; }
    .footer-inner { flex-direction: column; align-items: flex-start; gap: 2rem; }
    .fc-subnodes { flex-direction: column; gap: 10px; }
    .fc-branch-line, .fc-branch-line-bottom { display: none; }
}