/* ============================================================
   synop.stream — landing page
   Editorial-light palette, Inter + system serif.
   ============================================================ */

:root {
    --bg:           #f8f8f7;
    --surface:      #ffffff;
    --surface-2:    #fafaf9;
    --text:         #0f172a;
    --text-2:       #475569;
    --text-3:       #94a3b8;
    --border:       #e5e5e4;
    --border-2:     #d4d4d3;
    --accent:       #4f46e5;
    --accent-hover: #4338ca;
    --accent-bg:    #eef2ff;
    --accent-soft:  rgba(79, 70, 229, .08);
    --tldr-bg:      #f0f9ff;
    --tldr-border:  #7dd3fc;
    --tldr-text:    #0369a1;

    --font-sans:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-serif:   "Iowan Old Style", Georgia, "Palatino Linotype", serif;
    --font-mono:    "SF Mono", "Fira Code", Menlo, Consolas, monospace;

    --max-w:        900px;
    --max-w-wide:   1100px;
    --radius:       12px;
    --radius-sm:    8px;
    --shadow:       0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .04);
    --shadow-lg:    0 12px 40px rgba(15, 23, 42, .08), 0 2px 8px rgba(15, 23, 42, .04);
    --transition:   180ms cubic-bezier(.4, 0, .2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-feature-settings: "cv11", "ss01";
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
}

@supports (font-variation-settings: normal) {
    body { font-family: "Inter var", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
}

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

::selection { background: var(--accent-bg); color: var(--accent-hover); }

.sheet {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    padding: 0 28px;
}

/* --- Hero --- */

.hero {
    padding: 80px 0 40px;
    text-align: center;
    max-width: var(--max-w);
    margin: 0 auto;
}

.masthead { margin-bottom: 56px; }

.brand {
    display: inline-block;
    font-weight: 650;
    letter-spacing: -0.035em;
    font-size: clamp(2.5rem, 7vw, 4rem);
    line-height: 1;
    color: var(--text);
    margin-bottom: 10px;
    transition: color var(--transition);
}
.brand:hover { color: var(--text); }
.brand-accent { color: var(--accent); }

.attribution {
    font-size: .8125rem;
    color: var(--text-3);
    letter-spacing: 0.01em;
}
.attribution a {
    color: var(--text-2);
    font-weight: 550;
    border-bottom: 1px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}
.attribution a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tagline {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(2rem, 5vw, 3.25rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 24px;
}

.subtitle {
    font-size: 1.0625rem;
    color: var(--text-2);
    line-height: 1.65;
    max-width: 620px;
    margin: 0 auto 40px;
}

.cta-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 10px;
    font-size: .9375rem;
    font-weight: 550;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--text);
    color: var(--bg);
}
.btn-primary:hover {
    background: var(--accent);
    color: var(--bg);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(79, 70, 229, .2);
}
.btn-primary svg { width: 16px; height: 16px; }

.btn-secondary {
    background: transparent;
    color: var(--text-2);
    border-color: var(--border-2);
}
.btn-secondary:hover {
    color: var(--text);
    border-color: var(--text);
    background: var(--surface);
}
.btn-secondary svg { width: 14px; height: 14px; }

.requirements {
    font-size: .8125rem;
    color: var(--text-3);
    margin-bottom: 28px;
    letter-spacing: 0.005em;
}

.beta-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .75rem;
    font-weight: 500;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.beta-badge .dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
    animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .55; }
}

/* --- Hero product mock --- */

.hero-mock {
    margin-top: 72px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    text-align: left;
}

.mock-chrome {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
}
.mock-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--border-2);
}
.mock-dot:first-child { background: #f87171; opacity: .7; }
.mock-dot:nth-child(2) { background: #fbbf24; opacity: .7; }
.mock-dot:nth-child(3) { background: #4ade80; opacity: .7; }
.mock-url {
    flex: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--text-3);
    background: var(--surface);
    border-radius: 5px;
    padding: 4px 12px;
    border: 1px solid var(--border);
    margin-left: 8px;
}

.mock-body {
    padding: 36px 44px 40px;
}

.mock-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .75rem;
    color: var(--text-3);
    margin-bottom: 18px;
}
.mock-breadcrumb span:first-child { color: var(--text-2); font-weight: 500; }
.mock-sep { color: var(--border-2); }

.mock-title {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 1.5rem;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--text);
    margin-bottom: 10px;
}

.mock-meta {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    font-size: .8125rem;
    color: var(--text-3);
    margin-bottom: 24px;
}

.mock-callout {
    background: var(--tldr-bg);
    border: 1px solid var(--tldr-border);
    border-radius: var(--radius-sm);
    padding: 18px 22px;
    margin-bottom: 24px;
}
.mock-label {
    font-size: .6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--tldr-text);
    margin-bottom: 6px;
}
.mock-callout p {
    font-size: .9375rem;
    color: var(--text);
    line-height: 1.55;
}

.mock-section .mock-heading {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 1.125rem;
    color: var(--text);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.mock-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: .9375rem;
    color: var(--text-2);
    line-height: 1.55;
}
.mock-list strong { color: var(--text); font-weight: 600; }

/* --- Features --- */

.features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 96px 0;
}

.feature {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: border-color var(--transition), transform var(--transition);
}
.feature:hover {
    border-color: var(--border-2);
    transform: translateY(-2px);
}

.feature-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--accent-bg);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.feature-icon svg {
    width: 20px;
    height: 20px;
}

.feature h2 {
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: -0.005em;
    margin-bottom: 8px;
    color: var(--text);
}

.feature p {
    font-size: .9375rem;
    color: var(--text-2);
    line-height: 1.6;
}

/* --- Local-first block --- */

.local-first {
    padding: 8px 0 96px;
}

.local-first-inner {
    background: var(--accent-bg);
    border: 1px solid rgba(79, 70, 229, .18);
    border-radius: var(--radius);
    padding: 56px 48px;
    text-align: center;
}

.local-first-inner h2 {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(1.625rem, 3.5vw, 2.125rem);
    letter-spacing: -0.01em;
    line-height: 1.25;
    margin-bottom: 18px;
    color: var(--text);
}

.local-first-inner > p {
    font-size: 1.0625rem;
    color: var(--text-2);
    line-height: 1.65;
    max-width: 640px;
    margin: 0 auto 32px;
}

.local-first-points {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
    max-width: 560px;
    margin: 0 auto;
}

.local-first-point {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: .9375rem;
    color: var(--text-2);
    text-align: left;
    line-height: 1.55;
}

.local-first-check {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}
.local-first-check svg {
    width: 12px;
    height: 12px;
}

/* --- Pipeline --- */

.pipeline {
    padding: 96px 0;
    border-top: 1px solid var(--border);
}

.pipeline-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.eyebrow {
    display: inline-block;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
}

.pipeline-header h2,
.example-inner h2 {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(1.625rem, 3.5vw, 2.125rem);
    letter-spacing: -0.01em;
    line-height: 1.25;
    margin-bottom: 14px;
    color: var(--text);
}

.pipeline-header p {
    font-size: 1rem;
    color: var(--text-2);
}

.steps {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    counter-reset: step;
}

.step {
    padding: 28px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    position: relative;
}

.step + .step::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 50%;
    width: 12px;
    height: 1px;
    background: var(--border-2);
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--accent-bg);
    color: var(--accent);
    font-size: .8125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    margin-bottom: 16px;
}

.step h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.005em;
    color: var(--text);
}

.step p {
    font-size: .875rem;
    color: var(--text-2);
    line-height: 1.55;
}

/* --- Example narrative --- */

.example {
    padding: 96px 0;
    border-top: 1px solid var(--border);
}

.example-inner {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.example-inner .eyebrow { margin-bottom: 12px; }

.example-body {
    text-align: left;
    margin-top: 32px;
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--text);
}
.example-body p + p { margin-top: 18px; }
.example-body em {
    background: var(--tldr-bg);
    color: var(--tldr-text);
    font-style: normal;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 500;
}

/* --- Beta card --- */

.beta {
    padding: 96px 0 72px;
    border-top: 1px solid var(--border);
}

.beta-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 56px;
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}

.beta-card .eyebrow { margin-bottom: 12px; }

.beta-card h2 {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(1.5rem, 3vw, 2rem);
    letter-spacing: -0.01em;
    line-height: 1.25;
    margin-bottom: 18px;
    color: var(--text);
}

.beta-card p {
    font-size: 1rem;
    color: var(--text-2);
    line-height: 1.65;
    margin-bottom: 32px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.beta-email {
    font-size: .8125rem !important;
    color: var(--text-3) !important;
    margin-top: 20px !important;
    margin-bottom: 0 !important;
}
.beta-email a {
    color: var(--text-2);
    font-family: var(--font-mono);
    font-size: .8125rem;
    border-bottom: 1px dotted var(--border-2);
    padding-bottom: 1px;
}
.beta-email a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* --- Maker note --- */

.maker-note {
    text-align: center;
    font-size: .875rem;
    color: var(--text-3);
    font-style: italic;
    padding: 32px 0 16px;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.55;
}

/* --- Footer --- */

.footer {
    padding: 32px 0 56px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: .8125rem;
    color: var(--text-3);
    border-top: 1px solid var(--border);
}

.footer-primary,
.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px 12px;
}

.footer a {
    color: var(--text-2);
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}
.footer a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.dot-sep { color: var(--border-2); }

/* --- Responsive --- */

@media (max-width: 900px) {
    .mock-body { padding: 28px 32px 32px; }
}

@media (max-width: 820px) {
    .hero { padding: 56px 0 32px; }
    .masthead { margin-bottom: 40px; }
    .hero-mock { margin-top: 56px; }
    .features {
        grid-template-columns: 1fr;
        padding: 72px 0;
    }
    .local-first { padding-bottom: 72px; }
    .local-first-inner { padding: 44px 28px; }
    .pipeline { padding: 72px 0; }
    .example { padding: 72px 0; }
    .steps {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .step + .step::before {
        left: 50%;
        top: -8px;
        width: 1px;
        height: 6px;
    }
    .beta { padding: 72px 0 48px; }
    .beta-card { padding: 40px 28px; }
}

@media (max-width: 560px) {
    .sheet { padding: 0 20px; }
    .cta-row { flex-direction: column; align-items: stretch; }
    .btn-primary, .btn-secondary { justify-content: center; }
    .feature { padding: 24px; }
    .mock-url { display: none; }
    .mock-body { padding: 24px 22px 26px; }
    .mock-title { font-size: 1.25rem; }
    .local-first-inner { padding: 36px 24px; }
    .example-body { font-size: 1rem; }
}