/* =============================================
   SMTPServer Design System
   EDIT COLORS HERE - Changes apply site-wide
   ============================================= */

:root {
  --primary: #3f564e;
  --primary-press: #4b6059;
  --primary-soft: #b5cdc3;
  --primary-soft2: #effbf6;
  --ink: #0d253d;
  --ink-secondary: #273951;
  --ink-mute: #64748d;
  --canvas: #ffffff;
  --canvas-soft: #f6f9fc;
  --canvas-cream: #fbf3e8;
  --dark: #4b6059;
  --hairline: #e3e8ee;
  --hairline2: #a7bdb5;
  --success: #00a67d;
  --radius-lg: 12px;
  --radius-pill: 9999px;
  --shadow-1: rgba(0,55,112,0.08) 0 1px 3px;
  --shadow-2: rgba(0,55,112,0.08) 0 8px 24px, rgba(0,55,112,0.04) 0 2px 6px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, "SF Pro Display", system-ui, sans-serif; font-weight: 300; color: var(--ink); background: var(--canvas); font-feature-settings: "ss01"; -webkit-font-smoothing: antialiased; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.mesh {
  position: absolute; inset: 0 0 auto 0; height: 560px; z-index: -1; overflow: hidden;
  /* Light circuit SVG anchored top-right; radial mask fades it out toward the left and bottom */
  background:
    linear-gradient(180deg, rgba(255,255,255,0) 72%, var(--canvas) 100%),
    url("../bg-circuit.png") right top / cover no-repeat;
  -webkit-mask-image: radial-gradient(115% 130% at 92% 6%, #000 0%, #000 32%, transparent 74%);
  mask-image: radial-gradient(315% 150% at 80% 6%, #000 0%, #000 32%, transparent 74%);
/*  mask-image: radial-gradient(115% 130% at 92% 6%, #000 0%, #000 32%, transparent 74%);*/
}
.mesh::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(125deg, rgba(83,58,253,0) 40%, rgba(83,58,253,.045) 100%);
  pointer-events: none;
}
.nav-bar { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--hairline); isolation: isolate; }
.nav { padding: 10px 0; display: flex; align-items: center; gap: 8px; }
.brand { font-weight: 600; letter-spacing: -0.3px; font-size: 18px; text-decoration: none; color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 2px; margin-left: 14px; }
.nav-links > a, .nav-group summary { position: relative; display: inline-flex; align-items: center; gap: 5px; min-height: 44px; padding: 10px 12px; border-radius: 8px; text-decoration: none; color: var(--ink-secondary); font-size: 15px; transition: color .15s ease, background .15s ease; }
.nav-links > a:hover, .nav-group summary:hover { color: var(--ink); background: var(--canvas-soft); }
.nav-links > a[data-active="true"] { color: var(--primary); }
.nav-links > a[data-active="true"]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 3px; height: 2px; border-radius: 2px; background: var(--primary); }
.nav-group { position: relative; }
.nav-group summary { list-style: none; cursor: pointer; }
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary .chev { width: 14px; height: 14px; transition: transform .2s ease; }
.nav-group summary[data-active="true"] { color: var(--primary); }
.nav-group summary[data-active="true"]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 3px; height: 2px; border-radius: 2px; background: var(--primary); }
.nav-group[open] summary { color: var(--ink); background: var(--canvas-soft); }
.nav-group[open] summary .chev { transform: rotate(180deg); }
.nav-dropdown { display: none; position: absolute; top: calc(100% + 6px); left: 0; min-width: 300px; background: #fff; border: 1px solid var(--hairline); border-radius: 12px; box-shadow: var(--shadow-2); padding: 8px; z-index: 20; }
.nav-group[open] .nav-dropdown { display: grid; gap: 2px; }
.nav-dropdown a { display: block; padding: 10px 12px; border-radius: 8px; text-decoration: none; }
.nav-dropdown a strong { display: block; font-weight: 500; font-size: 14px; color: var(--ink); }
.nav-dropdown a small { display: block; margin-top: 2px; font-size: 12.5px; color: var(--ink-mute); line-height: 1.35; }
.nav-dropdown a:hover { background: var(--canvas-soft); }
.nav-dropdown a:hover strong { color: var(--primary); }
.nav-dropdown a[data-active="true"] strong { color: var(--primary); }

/* Features mega-menu */
.nav-group-mega { position: static; }
.nav-group-mega .nav-mega { display: none; position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); box-shadow: 0 16px 48px rgba(15,23,42,.08); padding: 28px 0 32px; z-index: 30; }
.nav-group-mega[open] .nav-mega { display: block; }
.nav-mega-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px 28px; }
.nav-mega-col { min-width: 0; }
.nav-mega-label { margin: 0 0 12px; padding: 0 8px; font-size: 11px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-mute); }
.nav-mega-item { display: flex; align-items: flex-start; gap: 12px; padding: 10px 8px; border-radius: 10px; text-decoration: none; transition: background .15s ease; }
.nav-mega-item:hover { background: var(--canvas-soft); }
.nav-mega-item[data-active="true"] .nav-mega-text strong { color: var(--primary); }
.nav-mega-icon { flex-shrink: 0; width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--hairline); border-radius: 10px; background: #fff; color: var(--ink-secondary); }
.nav-mega-icon svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.nav-mega-text { min-width: 0; }
.nav-mega-text strong { display: block; font-weight: 500; font-size: 14px; color: var(--ink); line-height: 1.3; }
.nav-mega-text small { display: block; margin-top: 2px; font-size: 12.5px; color: var(--ink-mute); line-height: 1.35; }
.nav-mega-item:hover .nav-mega-text strong { color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.menu-toggle { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--hairline); background: transparent; border-radius: 50%; color: var(--ink-secondary); cursor: pointer; transition: border-color .15s ease, color .15s ease; padding: 0; }
.menu-toggle:hover { border-color: var(--primary); color: var(--primary); }
.menu-toggle .chev { width: 16px; height: 16px; transition: transform .25s ease; }
.menu-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.mobile-menu { display: none; position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--hairline); box-shadow: var(--shadow-2); padding: 12px 20px 20px; z-index: 40; max-height: calc(100vh - 60px); overflow: auto; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 11px 4px; text-decoration: none; color: var(--ink-secondary); font-size: 15px; }
.mobile-menu a:hover, .mobile-menu a[data-active="true"] { color: var(--primary); }
.mobile-group-title { margin: 14px 0 2px; font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-mute); }
.btn { border-radius: var(--radius-pill); min-height: 44px; padding: 0 18px; border: 1px solid transparent; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 500; line-height: 1; transition: background-color .2s ease, border-color .2s ease, color .2s ease; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-press); }
.btn-secondary { background: #fff; border-color: var(--hairline); color: var(--ink-secondary); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { min-height: 48px; padding: 0 26px; font-size: 15px; }
.hero { padding: 52px 0 64px; }
.hero.center { text-align: center; }
.hero-text {}
.kicker { display: inline-flex; padding: 4px 10px; border-radius: var(--radius-pill); background: var(--primary-soft); color: #38544d; font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 16px 0 18px; font-size: clamp(34px, 7vw, 58px); line-height: 1.04; letter-spacing: -1.1px; font-weight: 500; max-width: 900px; text-wrap: balance; }
.hero.center h1 { margin-left: auto; margin-right: auto; }
.lead { margin: 0; max-width: 700px; font-size: 17px; line-height: 1.45; }
.hero.center .lead { margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero.center .hero-actions { justify-content: center; }
section { padding: 76px 0; }
.section-title { margin: 0 0 14px; font-size: clamp(28px, 4.8vw, 44px); letter-spacing: -0.8px; line-height: 1.08; font-weight: 300; text-wrap: balance; }
.section-sub { margin: 0; color: var(--ink-secondary); max-width: 700px; font-size: 16px; line-height: 1.5; }
.center { text-align: center; }
.center .section-sub { margin: 0 auto; }
.bg-soft { background: var(--canvas-soft); }
.bg-cream { background: var(--canvas-cream); }
.bg-dark { background: var(--dark); color: #fff; }
.bg-dark .section-title { color: #fff; }
.bg-dark .section-sub { color: rgba(255,255,255,.72); }
.card { background: #fff; border: 1px solid var(--hairline); border-radius: var(--radius-lg); box-shadow: var(--shadow-1); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 28px; }
.feature { padding: 24px; }
.feature h3 { margin: 0 0 10px; font-size: 22px; font-weight: 300; letter-spacing: -0.2px; }
.feature p { margin: 0; color: var(--ink-secondary); font-size: 15px; line-height: 1.5; }
.price-card { padding: 28px;background: var(--canvas-soft);color: #38544d; }
.price-card h3 { margin: 0; font-size: 22px; font-weight: 300; letter-spacing: -0.2px; }
.price { margin: 14px 0; font-size: 35px; letter-spacing: -0.5px; font-feature-settings: "tnum"; }
.price small { font-size: 15px; color: var(--ink-mute); }
.price-card ul { margin: 16px 0 24px; padding-left: 18px; color: var(--ink-secondary); }
.price-card li { margin: 8px 0; }
.price-meta { margin: 0 0 16px; font-size: 14px; color: var(--ink-mute); }
.price-card.featured .price-meta { color: rgba(255,255,255,.7); }
.payment-note { margin: 18px 0 0; font-size: 13px; color: var(--ink-mute); }
.calc { padding: 28px; margin-top: 28px; box-shadow: var(--shadow-2); }
.calc-label { margin: 0 0 6px; font-size: 14px; color: var(--ink-secondary); }
.calc input[type="range"] { width: 100%; margin: 14px 0 22px; accent-color: var(--primary); cursor: pointer; }
.calc-readout { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 22px; }
.calc-readout .metric strong { font-size: 26px; }
.calc-cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.tester-box { padding: 28px; margin-top: 32px; box-shadow: var(--shadow-2); }
.tester-label { margin: 0 0 10px; font-size: 14px; color: var(--ink-secondary); }
.tester-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top:10px; }
.tester-input { flex: 1;min-width: 240px; width: 100%;
  min-height: 46px;
  padding: 11px 13px;
  border: 1px solid var(--border-color, #d9d9df);
  border-radius: 9px;
  outline: none;
  background: var(--input-bg, #fff);
  color: var(--text-primary, #171717);
  font: inherit;
  font-size: 14px;
  line-height: 1.4;
  transition:
    border-color .2s ease,
    box-shadow .2s ease,
    background-color .2s ease;
  box-sizing: border-box;}
.tester-input:focus { outline: none; border-color: var(--primary); }
.tester-input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(83, 58, 253, 0.2);
}
.tester-note { margin: 14px 0 0; font-size: 13px; color: var(--ink-mute); }
.contact-form-card { max-width: 640px; margin: 32px auto 0; padding: 28px; box-shadow: var(--shadow-2); }
.contact-form { display: flex; flex-direction: column; }
.contact-form .tester-label { display: block; margin: 0 0 8px; }
.contact-form .tester-input {
  display: block;
  width: 100%;
  flex: none;
  min-width: 0;
  margin: 0 0 16px;
  box-sizing: border-box;
}
.contact-form textarea.tester-input { resize: vertical; min-height: 120px; }
.contact-form-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.contact-status {
  margin: 16px 0 0; padding: 14px 16px; border-radius: 8px; font-size: 14px; line-height: 1.5;
  background: #ecfdf5; border: 1px solid #86efac; color: #166534;
}
.contact-status.is-error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.contact-status:empty { display: none; }
.score-banner { display: flex; align-items: center; gap: 18px; padding: 22px 26px; margin: 28px 0 0; }
.score-value { font-size: 42px; font-weight: 300; letter-spacing: -1px; font-feature-settings: "tnum"; color: var(--primary-press); }
.score-label { font-size: 15px; color: var(--ink-secondary); }
.demo-badge { font-size: 10px; padding: 3px 8px; border-radius: var(--radius-pill); background: var(--canvas-cream); color: #9b6829; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.dns-results {
  margin: 16px 0 0; padding: 16px 18px; background: var(--canvas-soft); border: 1px solid var(--hairline);
  border-radius: 8px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px;
  line-height: 1.55; white-space: pre-wrap; word-break: break-word; color: var(--ink-secondary);
}
.dns-results:empty { display: none; }
.dns-results.is-error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.tool-form-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.tool-form-row select.tester-input { width: auto; min-width: 120px; flex: 0 0 auto; }
.article-toc { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.article-toc a {
  padding: 10px 14px; border-radius: var(--radius-pill); border: 1px solid var(--hairline);
  text-decoration: none; color: var(--ink-secondary); font-size: 13px; background: #fff;
}
.article-toc a:hover { border-color: var(--primary); color: var(--primary); }
.hours { margin: 16px 0 0; padding: 0; list-style: none; font-feature-settings: "tnum"; }
.hours li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--hairline); font-size: 14px; color: var(--ink-secondary); }
.hours li:last-child { border-bottom: 0; }
.contact-card { padding: 28px; }
.contact-card h3 { margin: 0 0 12px; font-size: 22px; font-weight: 300; letter-spacing: -0.2px; }
.contact-card p { margin: 0 0 8px; color: var(--ink-secondary); font-size: 15px; line-height: 1.55; }
.contact-card a { color: var(--primary); text-decoration: none; }
.price-card.featured { background: var(--dark); color: #fff; border: 0; }
.price-card.featured .price small, .price-card.featured ul { color: rgba(255,255,255,.78); }
.price-card.featured .btn-secondary { border-color: rgba(255,255,255,.3); color: #fff; background: transparent; }
.stats { display: flex; justify-content: center; gap: 48px; margin-top: 48px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-value { font-size: 42px; font-weight: 300; letter-spacing: -1px; font-feature-settings: "tnum"; }
.stat-label { font-size: 13px; color: var(--ink-mute); margin-top: 4px; }
.dashboard { margin-top: 42px; padding: 24px; box-shadow: var(--shadow-2); }
.dashboard-top { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.metric { background: var(--canvas-soft); border-radius: 10px; padding: 14px; }
.metric small { color: var(--ink-mute); display: block; margin-bottom: 6px; }
.metric strong { font-size: 24px; letter-spacing: -0.4px; font-weight: 400; font-feature-settings: "tnum"; }
.table { background: var(--canvas-soft); border-radius: 10px; padding: 10px 14px; font-size: 13px; font-feature-settings: "tnum"; }
.row { display: grid; grid-template-columns: 1.1fr 1fr .8fr .6fr; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--hairline); }
.row:last-child { border-bottom: 0; }
.compare { margin-top: 26px; background: var(--canvas-soft); border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; font-size: 14px; font-feature-settings: "tnum"; }
.compare .row { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 12px; padding: 14px 18px; }
.compare .row.head { background: #fff; font-weight: 500; color: var(--ink); }
.compare-2 .row { grid-template-columns: 1fr 2fr; }
.compare-3 .row { grid-template-columns: 1fr 1.15fr 1.35fr; }
.compare-4 .row { grid-template-columns: 1.3fr 1fr 1fr 1fr; }
.compare .row.highlight { background: rgba(83,58,253,.06); }
.product-shot { margin: 28px 0 0; border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-2); background: #fff; }
.product-shot img { display: block; width: 100%; height: auto; }
.product-shot figcaption { padding: 12px 16px; font-size: 13px; border-top: 1px solid var(--hairline); background: var(--canvas-soft); }
.muted { color: var(--ink-mute); }
.tools-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 24px; }
.tool { padding: 14px 16px; border-radius: var(--radius-pill); border: 1px solid var(--hairline); text-align: center; text-decoration: none; color: var(--ink-secondary); font-size: 14px; background: #fff; }
.tool:hover { border-color: var(--primary); color: var(--primary); }
.value-card { background: #fff; border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-1); transition: box-shadow .25s ease, transform .25s ease; }
.value-card:hover { box-shadow: var(--shadow-2); transform: translateY(-4px); }
.value-icon { width: 48px; height: 48px; border-radius: 10px; background: var(--canvas-soft); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; font-size: 22px; }
.value-icon svg { width: 22px; height: 22px; stroke: var(--primary); fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }

/* Hero split + stream illustrations (message-streams and similar product pages) */
.hero-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center; }
.hero-split .hero-copy { min-width: 0; }
.stream-art { margin: 0; border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-2); background: #fff; }
.stream-art img, .stream-art svg { display: block; width: 100%; height: auto; }
.stream-compare-wrap { margin-top: 32px; }
.stream-compare-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: stretch; }
.stream-compare-arrow { display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.stream-compare-panel { border-radius: var(--radius-lg); padding: 28px 24px; min-height: 100%; }
.stream-compare-bad { background: linear-gradient(180deg, #fef2f2 0%, #fff 100%); border: 1px solid #fecaca; }
.stream-compare-good { background: linear-gradient(180deg, #f5f3ff 0%, #fff 100%); border: 1px solid #c4b5fd; box-shadow: var(--shadow-1); }
.stream-compare-panel h3 { margin: 0 0 24px; font-size: 18px; font-weight: 500; letter-spacing: -0.2px; text-align: center; }
.stream-compare-bad h3 { color: #991b1b; }
.stream-compare-good h3 { color: var(--primary); }
.stream-flow { display: flex; flex-direction: column; align-items: center; }
.stream-node { padding: 10px 18px; background: #fff; border: 1px solid var(--hairline); border-radius: 10px; font-size: 14px; color: var(--ink-secondary); text-align: center; line-height: 1.35; }
.stream-node-primary { background: var(--primary); color: #fff; border-color: var(--primary); font-weight: 500; }
.stream-connector { width: 2px; height: 22px; flex-shrink: 0; }
.stream-connector-bad { background: #f87171; }
.stream-connector-good { background: var(--primary); opacity: 0.45; }
.stream-connector-dashed { background: repeating-linear-gradient(180deg, #f87171 0 4px, transparent 4px 8px); width: 2px; }
.stream-split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; width: 100%; }
.stream-branch { display: flex; flex-direction: column; align-items: center; }
.stream-outcome { padding: 8px 14px; border-radius: var(--radius-pill); font-size: 13px; text-align: center; line-height: 1.3; }
.stream-outcome-bad { background: #fee2e2; color: #b91c1c; }
.stream-outcome-good { margin-top: 20px; width: 100%; background: #ecfdf5; color: #166534; border: 1px solid #86efac; font-weight: 500; }
.stream-streams { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; width: 100%; }
.stream-stream-card { padding: 14px 8px; text-align: center; border-radius: 10px; background: #fff; font-size: 13px; line-height: 1.4; }
.stream-stream-card strong { display: block; font-weight: 500; font-size: 13px; margin-bottom: 2px; }
.stream-stream-card span { display: block; color: var(--ink-mute); font-size: 12px; }
.stream-stream-tx { border: 1px solid #86efac; }
.stream-stream-tx strong { color: #166534; }
.stream-stream-mk { border: 1px solid #c4b5fd; }
.stream-stream-mk strong { color: var(--primary); }
.stream-stream-al { border: 1px solid #fcd34d; }
.stream-stream-al strong { color: #b45309; }
.stream-compare-caption { margin: 16px 0 0; text-align: center; color: var(--ink-mute); font-size: 14px; line-height: 1.5; }
.stream-stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.stream-stat { background: #fff; border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 20px; text-align: center; box-shadow: var(--shadow-1); }
.stream-stat svg { width: 36px; height: 36px; margin: 0 auto 12px; display: block; }
.stream-stat strong { display: block; font-size: 22px; font-weight: 400; color: var(--ink); font-feature-settings: "tnum"; letter-spacing: -.3px; }
.stream-stat span { display: block; margin-top: 4px; font-size: 13px; color: var(--ink-mute); }
@media (max-width: 900px) {
  .hero-split { grid-template-columns: 1fr; }
  .hero-split .stream-art { max-width: 560px; margin: 0 auto; }
  .stream-compare-grid { grid-template-columns: 1fr; gap: 10px; }
  .stream-compare-arrow { transform: rotate(90deg); padding: 0; height: 20px; }
  .stream-compare-panel { padding: 14px 12px; }
  .stream-compare-panel h3 { margin-bottom: 10px; font-size: 15px; }
  .stream-compare-wrap { margin-top: 16px; }
  .stream-node { padding: 6px 10px; font-size: 12px; border-radius: 8px; }
  .stream-connector { height: 10px; }
  .stream-outcome { padding: 5px 10px; font-size: 11px; }
  .stream-outcome-good { margin-top: 10px; }
  .stream-streams { gap: 6px; }
  .stream-stream-card { padding: 8px 4px; font-size: 11px; }
  .stream-stream-card strong { font-size: 11px; }
  .stream-stream-card span { font-size: 10px; }
  .stream-compare-caption { margin-top: 10px; font-size: 13px; }
  .stream-stat-row { grid-template-columns: 1fr; }
  /* Keep compare branches side-by-side on phones — stacking doubles scroll cost */
  .stream-streams { grid-template-columns: repeat(3, 1fr); }
  .stream-split { grid-template-columns: 1fr 1fr; gap: 8px; }
}

@media (max-width: 520px) {
  .stream-stat-row { gap: 10px; }
}

.value-card h3 { margin: 0 0 10px; font-size: 20px; font-weight: 400; letter-spacing: -0.2px; }
.value-card p { margin: 0; color: var(--ink-secondary); font-size: 15px; line-height: 1.55; }
.compare-card { background: #fff; border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-1); }
.compare-card.highlight { border-color: var(--primary); box-shadow: var(--shadow-2), 0 0 0 1px var(--primary); }
.compare-card h3 { margin: 0 0 6px; font-size: 22px; font-weight: 400; letter-spacing: -0.2px; display: flex; align-items: center; gap: 10px; }
.badge { font-size: 10px; padding: 3px 8px; border-radius: var(--radius-pill); background: var(--primary); color: #fff; font-weight: 600; }
.compare-card .desc { margin: 0 0 20px; color: var(--ink-mute); font-size: 14px; }
.compare-list { margin: 0; padding: 0; list-style: none; }
.compare-list li { padding: 10px 0; border-bottom: 1px solid var(--hairline); display: flex; align-items: center; gap: 10px; font-size: 15px; }
.compare-list li:last-child { border-bottom: 0; }
.icon-check { color: var(--success); font-weight: 600; }
.icon-x { color: #c4c9d4; font-weight: 600; }
.quote-card { background: #fff;
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1); padding: 28px; }
.quote-card-light{ background: #fff;
  color: var(--ink);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1); padding: 28px; }
.quote-text { font-size: 17px; line-height: 1.55; font-weight: 300; margin: 0 0 20px; }
.quote-author { display: flex; align-items: center; gap: 12px; }
.avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--primary-soft); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 15px; color: var(--primary-press); }
.author-info .name { font-weight: 500; font-size: 14px; }
.author-info .role { font-size: 13px; color: rgba(255,255,255,.58); }
.process-step { text-align: center; padding: 24px 16px; }
.step-num { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 600; font-size: 16px; display: inline-flex; align-items: center; justify-content: center; }
.process-step h3 { margin: 0 0 8px; font-size: 17px; font-weight: 400; }
.process-step p { margin: 0; color: var(--ink-mute); font-size: 14px; line-height: 1.5; }
.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-content { max-width: 580px; }
.cta-content h2 { margin: 0 0 12px; font-size: 34px; font-weight: 300; letter-spacing: -0.6px; }
.cta-content p { margin: 0; color: var(--ink-secondary); font-size: 16px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.faq-item { background: #fff; border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 20px; }
.faq-item h3 { margin: 0 0 10px; font-size: 18px; font-weight: 300; letter-spacing: -0.2px; }
.faq-item p { margin: 0; color: var(--ink-secondary); font-size: 15px; line-height: 1.5; }
footer { padding: 46px 0 30px; border-top: 1px solid var(--hairline); color: var(--ink-mute); font-size: 13px; background: #fff; }

/* Dark contrast footer when the last section before footer is light (not bg-dark) */
main:not(:has(> section:last-child.bg-dark)) + footer {
  background: var(--dark);
  border-top-color: rgba(255,255,255,.1);
  color: rgba(255,255,255,.65);
}
main:not(:has(> section:last-child.bg-dark)) + footer .footer-columns h4 { color: #fff; }
main:not(:has(> section:last-child.bg-dark)) + footer .footer-columns a { color: rgba(255,255,255,.68); }
main:not(:has(> section:last-child.bg-dark)) + footer .footer-columns a:hover { color: #fff; }
main:not(:has(> section:last-child.bg-dark)) + footer .footer-bottom { border-top-color: rgba(255,255,255,.1); color: rgba(255,255,255,.65); }
main:not(:has(> section:last-child.bg-dark)) + footer .footer-bottom strong { color: #fff; }
main:not(:has(> section:last-child.bg-dark)) + footer .footer-social a { color: rgba(255,255,255,.68); border-color: rgba(255,255,255,.22); }
main:not(:has(> section:last-child.bg-dark)) + footer .footer-social a:hover { color: #fff; border-color: rgba(255,255,255,.45); }

footer.footer-contrast {
  background: var(--dark);
  border-top-color: rgba(255,255,255,.1);
  color: rgba(255,255,255,.65);
}
footer.footer-contrast .footer-columns h4 { color: #fff; }
footer.footer-contrast .footer-columns a { color: rgba(255,255,255,.68); }
footer.footer-contrast .footer-columns a:hover { color: #fff; }
footer.footer-contrast .footer-bottom { border-top-color: rgba(255,255,255,.1); color: rgba(255,255,255,.65); }
footer.footer-contrast .footer-bottom strong { color: #fff; }
footer.footer-contrast .footer-social a { color: rgba(255,255,255,.68); border-color: rgba(255,255,255,.22); }
footer.footer-contrast .footer-social a:hover { color: #fff; border-color: rgba(255,255,255,.45); }

.footer-top { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { color: var(--ink-mute); text-decoration: none; }
.footer-links a:hover { color: var(--primary); }
.footer-columns { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; margin-bottom: 28px; }
.footer-columns h4 { margin: 0 0 10px; font-size: 15px; color: var(--ink); font-weight: 500; }
.footer-columns ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.footer-columns a { color: var(--ink-mute); text-decoration: none; font-size: 13px; }
.footer-columns a:hover { color: var(--primary); }
.footer-columns section { padding: 35px 0; }
.footer-wrapper { border-top: 1px solid var(--hairline);border-top-color: rgba(255, 255, 255, .1);}
.footer-bottom { padding-top: 16px; display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap;width: min(1160px, calc(100% - 40px));
    margin: 0 auto; }
.footer-social { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-social a { color: var(--ink-mute); text-decoration: none; font-size: 12px; border: 1px solid var(--hairline); border-radius: var(--radius-pill); padding: 6px 10px; }
.footer-social a:hover { border-color: var(--primary); color: var(--primary); }
@media (max-width: 1000px) { .grid-3 { grid-template-columns: 1fr 1fr; } .grid-4 { grid-template-columns: 1fr 1fr; gap: 24px; } .tools-grid { grid-template-columns: 1fr 1fr 1fr; } .dashboard-top, .calc-readout { grid-template-columns: 1fr; } }
@media (max-width: 860px) { .footer-columns { grid-template-columns: 1fr 1fr; text-align: center; } .footer-columns section { padding: 6px 0 } .process-step {padding: 10px 16px}}
@media (max-width: 1060px) { .nav-links { display: none; } .nav-group-mega .nav-mega { display: none !important; } .menu-toggle { display: inline-flex; } }
@media (max-width: 760px) { .grid-2, .grid-3, .grid-4, .tools-grid { grid-template-columns: 1fr; } .row, .compare .row { grid-template-columns: 1fr 1fr; } .hero { padding-top: 32px; } section { padding: 60px 0; } .cta-box { flex-direction: column; text-align: center; } .cta-actions { justify-content: center; } .stats { gap: 32px; } .footer-columns { grid-template-columns: 1fr;} .footer-social { width:100%; display: flex; flex-wrap: wrap; gap: 10px;justify-content:center; }}
 }
@media (max-width: 520px) { .nav .btn-primary { display: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .value-card:hover { transform: none; }
}

/* ================================
   SMTP TEST FORM
================================ */

.smtp-test-form {
  width: 100%;
}

.smtp-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.form-field {
  min-width: 0;
}

.tester-label {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;

}

/* 404 page — uses the existing SMTPServer design tokens/classes */
.error-page {
  min-height: calc(100vh - 65px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 0 96px;
  position: relative;
  overflow: hidden;
}

.error-content {
  width: min(760px, 100%);
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.error-code {
  margin: 0;
  font-size: clamp(120px, 23vw, 250px);
  line-height: .78;
  letter-spacing: -0.075em;
  font-weight: 500;
  color: transparent;
  -webkit-text-stroke: 1px var(--primary-soft);
  text-shadow: 0 20px 55px rgba(63, 86, 78, .10);
  user-select: none;
}

.error-content h1 {
  margin: 34px auto 14px;
  max-width: 680px;
  font-size: clamp(32px, 5vw, 48px);
}

.error-content .lead {
  margin: 0 auto;
  color: var(--ink-secondary);
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.error-art {
  position: absolute;
  width: 620px;
  height: 620px;
  border: 1px solid rgba(63, 86, 78, .10);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -46%);
  pointer-events: none;
}

.error-art::before,
.error-art::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(63, 86, 78, .08);
  border-radius: 50%;
}

.error-art::after {
  inset: 27%;
  border-style: dashed;
  opacity: .8;
}

.error-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-soft);
  box-shadow: 0 0 0 8px rgba(181, 205, 195, .16);
}

.error-dot.one { left: 14%; top: 27%; }
.error-dot.two { right: 17%; top: 35%; }
.error-dot.three { left: 25%; bottom: 18%; }
.error-dot.four { right: 26%; bottom: 22%; }

.error-route {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 8px 12px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.78);
  color: var(--ink-mute);
  font: 400 12px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.error-route span {
  color: var(--primary);
}

@media (max-width: 760px) {
  .error-page {
    min-height: calc(100vh - 60px);
    padding: 54px 0 70px;
  }

  .error-art {
    width: 420px;
    height: 420px;
  }

  .error-code {
    font-size: clamp(100px, 31vw, 170px);
  }
}

@media (max-width: 520px) {
  .error-actions {
    flex-direction: column;
    align-items: stretch;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }

  .error-actions .btn {
    width: 100%;
  }

  .error-art {
    width: 330px;
    height: 330px;
  }
}