/* DataEase AI site theme.
   Loaded after each page's inline <style>, so it is the last word on tokens and chrome.
   Values and reasons: DESIGN.md at the repo root. Light is the default theme; .dark on <html> is the opt-in. */

/* Light theme tokens (the toggle). Dark is the default, see .dark below. */
:root {
  --background: 0 0% 100%;
  --foreground: 222 47% 11%;           /* #0f172a */
  --card: 0 0% 100%;
  --card-foreground: 222 47% 11%;
  --primary: 221 83% 53%;              /* #2563eb */
  --primary-foreground: 0 0% 100%;
  --secondary: 210 40% 96%;            /* #f1f5f9 fill */
  --secondary-foreground: 222 47% 11%;
  --muted: 210 40% 96%;
  --muted-foreground: 215 16% 47%;     /* #64748b, 4.8:1 on white */
  --accent: 210 40% 96%;
  --accent-foreground: 222 47% 11%;
  --destructive: 0 72% 51%;
  --destructive-foreground: 0 0% 100%;
  --border: 214 32% 91%;               /* #e2e8f0 */
  --input: 214 32% 91%;
  --ring: 221 83% 53%;

  --de-accent: #2563eb;                /* brand blue fill, white label 5.2:1 */
  --de-accent-hover: #3b82f6;          /* brighter on hover, as the original site did */
  --de-on-accent: #ffffff;
  --de-accent-text: #2563eb;
  --de-ink: #0f172a;
  --de-line: #e2e8f0;
  --de-line-strong: #cbd5e1;
  --de-dark: #0b1222;                  /* product canvas: navy, same in both themes */
  --de-on-dark: #f0f2f8;
  --de-dark-muted: #9da6be;
  --de-dark-line: #1e2a45;
  --de-dark-success: #34d399;
  --de-dark-success-soft: #0f2a1f;
  --de-dark-warning: #fbbf24;
  --de-dark-warning-soft: #2e2410;
  --de-paper: #ffffff;                 /* the founder's document inside the dark canvas */
  --de-paper-ink: #0f172a;
  --de-paper-muted: #64748b;
  --de-paper-line: #e2e8f0;
  --de-success: #047857;
  --de-success-soft: #ecfdf5;
  --de-warning: #b45309;
  --de-warning-soft: #fffbeb;
  --de-danger: #dc2626;
  --de-radius-sm: 8px;
  --de-radius: 12px;
  --de-motion: 160ms;
}
/* Dark theme: the site's original navy. */
.dark {
  --background: 224 48% 5%;            /* #060911 */
  --foreground: 225 40% 96%;           /* #f0f2f8 */
  --card: 224 42% 9%;                  /* #0d1322 */
  --card-foreground: 225 40% 96%;
  --secondary: 224 42% 13%;            /* #131a2e */
  --secondary-foreground: 225 40% 96%;
  --muted: 224 42% 13%;
  --muted-foreground: 224 20% 68%;     /* #9da6be, 7.1:1 on card */
  --accent: 224 42% 13%;
  --accent-foreground: 225 40% 96%;
  --border: 224 42% 15%;               /* #161f38 */
  --input: 224 42% 15%;
  --de-accent-text: #60a5fa;           /* 7.8:1 on the navy background */
  --de-ink: #f0f2f8;
  --de-line: #1a2238;
  --de-line-strong: #2e3b5e;
  --de-success: #34d399;
  --de-success-soft: #0f2a1f;
  --de-warning: #fbbf24;
  --de-warning-soft: #2e2410;
  --de-danger: #f87171;
}

/* ---------- base ---------- */
html[lang][lang] body {
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: 'Outfit', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
html[lang][lang] a:focus-visible,
html[lang][lang] button:focus-visible,
html[lang][lang] summary:focus-visible {
  outline: 3px solid var(--de-accent);
  outline-offset: 4px;
}
html[lang][lang] h1 { font-weight: 500; letter-spacing: -0.045em; line-height: 1.04; }
html[lang][lang] h2 { font-weight: 500; letter-spacing: -0.035em; line-height: 1.15; }
html[lang][lang] h3 { font-weight: 500; letter-spacing: -0.01em; }
html[lang][lang] h4 { font-weight: 500; }
html[lang][lang] .blog-content code,
html[lang][lang] .prose-section code,
html[lang][lang] pre,
html[lang][lang] pre code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- atmosphere off: flat page, hairlines carry separation ---------- */
html[lang][lang] body::before,
html[lang][lang] body::after,
html[lang][lang] .de-hero-bg,
html[lang][lang] .glow-1, html[lang][lang] .glow-2, html[lang][lang] .glow-3,
html[lang][lang] .grid-mask, html[lang][lang] .grid-fade, html[lang][lang] .grid-lines, html[lang][lang] .grid-f,
html[lang][lang] #heroParticles,
html[lang][lang] .ps-bg, html[lang][lang] .showcase-bg, html[lang][lang] .bs-bg,
html[lang][lang] .pr-bg, html[lang][lang] .faq-bg, html[lang][lang] .fcta-bg,
html[lang][lang] .df-section::before,
html[lang][lang] .pr-card::before, html[lang][lang] .faq-cta-card::before,
html[lang][lang] .ps-persona::before, html[lang][lang] .app-card::before,
html[lang][lang] .de-btn-primary::before,
html[lang][lang] canvas[id$="Particles"],
html[lang][lang] canvas.df-particles,
html[lang][lang] .ps-floats,
html[lang][lang] #connectionsSvg,
html[lang][lang] .de-am-card::after,
html[lang][lang] [class*="btn-primary"]::after,
html[lang][lang] .faq-cta-btn::after {
  display: none !important;
}
html[lang][lang] .de-am-row.is-you { box-shadow: none; }
html[lang][lang] .faq-cta-btn {
  background: var(--de-accent);
  border: 1px solid var(--de-accent);
  color: var(--de-on-accent) !important;
  border-radius: var(--de-radius-sm);
  font-weight: 500;
  box-shadow: none;
}
html[lang][lang] .faq-cta-btn:hover { background: var(--de-accent-hover); transform: none; box-shadow: none; }

/* ---------- header ---------- */
html[lang][lang] .de-nav {
  background: hsl(var(--background));
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid hsl(var(--border));
  padding: 18px 48px;
}
html[lang][lang] .de-nav .nav-logo .logo-text {
  background: none;
  -webkit-text-fill-color: var(--de-ink);
  color: var(--de-ink);
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -0.8px;
}
html[lang][lang] .de-nav .nav-logo .logo-text .logo-ai {
  -webkit-text-fill-color: var(--de-accent-text);
  color: var(--de-accent-text);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  margin-left: 2px;
}
html[lang][lang] .de-nav .nav-links-desk a {
  color: var(--de-ink);
  font-size: 14px;
  font-weight: 400;
  transition: color var(--de-motion);
}
html[lang][lang] .de-nav .nav-links-desk a:hover { color: var(--de-accent); }
html[lang][lang] .de-nav .nav-login { color: var(--de-ink); font-size: 14px; white-space: nowrap; }
html[lang][lang] .de-nav .nav-login span { margin-left: 6px; }
html[lang][lang] .de-nav .free-badge { color: var(--de-success); font-family: inherit; letter-spacing: 0.08em; }
html[lang][lang] .de-nav .new-badge { color: var(--de-warning); font-family: inherit; letter-spacing: 0.08em; }
html[lang][lang] .de-nav .mobile-toggle { color: var(--de-ink); }
html[lang][lang] .de-nav .mobile-dropdown {
  background: hsl(var(--background));
  backdrop-filter: none;
  border-bottom: 1px solid hsl(var(--border));
}
html[lang][lang] .de-nav .mobile-dropdown a { color: var(--de-ink); }
html[lang][lang] .de-nav .mobile-dropdown a:hover { color: var(--de-accent); }
html[lang][lang] .theme-toggle { color: hsl(var(--muted-foreground)); border-radius: var(--de-radius-sm); }
html[lang][lang] .theme-toggle:hover { color: var(--de-ink); background: hsl(var(--muted)); }
@media (max-width: 768px) {
  html[lang][lang] .de-nav { padding: 12px 20px; }
}

/* ---------- buttons ---------- */
html[lang][lang] [class*="btn-primary"],
html[lang][lang] [class*="cta-primary"],
html[lang][lang] .nav-cta-btn,
html[lang][lang] .mob-cta,
html[lang][lang] .blog-cta a,
html[lang][lang] .blog-content .kg-btn,
html[lang][lang] .bill-toggle button.active {
  background: var(--de-accent);
  border: 1px solid var(--de-accent);
  color: var(--de-on-accent) !important;
  border-radius: var(--de-radius-sm);
  font-weight: 500 !important;
  box-shadow: none;
  transform: none;
  transition: background var(--de-motion), border-color var(--de-motion) !important;
}
html[lang][lang] [class*="btn-primary"],
html[lang][lang] [class*="cta-primary"],
html[lang][lang] .blog-cta a,
html[lang][lang] .blog-content .kg-btn {
  font-size: 15px;
  padding: 16px 23px;
  min-height: 54px;
}
html[lang][lang] [class*="btn-primary"]:hover,
html[lang][lang] [class*="cta-primary"]:hover,
html[lang][lang] .nav-cta-btn:hover,
html[lang][lang] .mob-cta:hover,
html[lang][lang] .blog-cta a:hover,
html[lang][lang] .blog-content .kg-btn:hover {
  background: var(--de-accent-hover) !important;
  border-color: var(--de-accent-hover);
  box-shadow: none;
  transform: none;
}
html[lang][lang] .nav-cta-btn { min-height: 44px; padding: 11px 16px; font-size: 13px; }
html[lang][lang] [class*="btn-secondary"],
html[lang][lang] [class*="cta-secondary"] {
  background: transparent;
  border: 1px solid var(--de-line);
  color: var(--de-ink);
  border-radius: var(--de-radius-sm);
  font-size: 15px;
  font-weight: 500;
  padding: 16px 23px;
  min-height: 54px;
  box-shadow: none;
  transform: none;
  transition: background var(--de-motion), border-color var(--de-motion);
}
html[lang][lang] [class*="btn-secondary"]:hover,
html[lang][lang] [class*="cta-secondary"]:hover {
  background: hsl(var(--muted));
  border-color: var(--de-ink);
  color: var(--de-ink);
  box-shadow: none;
  transform: none;
}
html[lang][lang] .de-hero-actions .de-btn-secondary {
  border: 0;
  background: none;
  padding: 0;
  min-height: 44px;
  font-weight: 400;
  border-radius: 0;
}
html[lang][lang] .de-hero-actions .de-btn-secondary:hover {
  background: none;
  text-decoration: underline;
  text-underline-offset: 5px;
}

/* ---------- surfaces ---------- */
html[lang][lang] [class*="-card"] {
  border-radius: var(--de-radius);
  box-shadow: none;
  background-image: none;
}
html[lang][lang] [class*="-card"]:hover { transform: none; box-shadow: none; }
html[lang][lang] .de-am-card { border-color: var(--de-dark); }
html[lang][lang] .de-am-card .de-am-head {
  background: var(--de-dark);
  color: var(--de-on-dark);
  border-bottom: 0;
  padding: 16px 20px;
}
html[lang][lang] .answer-block {
  background: hsl(var(--muted));
  border-left: 3px solid var(--de-accent);
  border-radius: 0;
  padding: 14px 18px;
  color: hsl(var(--foreground));
}
html[lang][lang] .prose-section a,
html[lang][lang] .blog-content a { color: var(--de-accent-text); text-underline-offset: 4px; }
html[lang][lang] .prose-section th { background: hsl(var(--muted)); font-weight: 500; }
html[lang][lang] footer { border-top: 1px solid hsl(var(--border)); }

/* ---------- homepage hero ---------- */
html[lang][lang] .de-hero { min-height: auto; padding: 128px 48px 72px; }
html[lang][lang] .de-hero-badge {
  background: none;
  border: 0;
  border-radius: 0;
  padding: 0;
  font-size: 11px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--de-ink);
  margin-bottom: 24px;
}
html[lang][lang] .de-hero-badge .dot { width: 7px; height: 7px; background: var(--de-ink); animation: none; }
html[lang][lang] .de-hero-headline {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.02;
  color: var(--de-ink);
}
html[lang][lang] .hero-gradient-text,
html[lang][lang] [class*="gradient-word"],
html[lang][lang] [class*="gradient-text"],
html[lang][lang] .works-word,
html[lang][lang] h1 .grad { color: var(--de-ink) !important; }
html[lang][lang] .shortlist { position: relative; display: inline-block; }
html[lang][lang] .shortlist svg {
  position: absolute;
  bottom: -0.16em;
  left: 0;
  width: 100%;
  height: 0.2em;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}
html[lang][lang] .de-hero-sub {
  color: hsl(var(--muted-foreground));
  font-size: 18px;
  line-height: 1.6;
  max-width: 460px;
}
html[lang][lang] .de-hero-sub strong { color: var(--de-ink); font-weight: 500; }
html[lang][lang] .de-hero-actions { gap: 24px; }
html[lang][lang] .de-hero-trust { font-size: 12px; color: hsl(var(--muted-foreground)); }
html[lang][lang] .de-hero-trust .check { color: var(--de-ink); }
html[lang][lang] .de-hero-trust .sep { color: var(--de-line-strong); }
html[lang][lang] .de-hero-note {
  display: flex;
  gap: 14px;
  margin-top: 36px;
  font-size: 12px;
  line-height: 1.6;
  color: hsl(var(--muted-foreground));
}
html[lang][lang] .de-hero-note strong { font-weight: 400; color: var(--de-ink); }
html[lang][lang] .de-hero-note .note-line {
  display: block;
  width: 30px;
  height: 1px;
  background: var(--de-ink);
  margin-top: 10px;
  flex-shrink: 0;
}
@media (max-width: 768px) {
  html[lang][lang] .de-hero-note { justify-content: center; text-align: left; }
}
@media (max-width: 768px) {
  html[lang][lang] .de-hero { padding: 104px 20px 56px; }
  html[lang][lang] .de-hero-headline { font-size: 34px; letter-spacing: -0.04em; }
}
@media (prefers-reduced-motion: reduce) {
  html[lang][lang] *, html[lang][lang] *::before, html[lang][lang] *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Soft light direction (October 21, 2026): light default, soft shadows, gradient headline highlight ---------- */
:root {
  --de-violet: #7c3aed;
  --de-gradient: linear-gradient(90deg, #2563eb 0%, #4f46e5 55%, #7c3aed 100%);
  --de-radius: 16px;
  --de-radius-sm: 12px;
}
/* Light colours only. Scoped with :not(.dark) so the .dark block above keeps winning when the toggle is on. */
:root:not(.dark) {
  --background: 220 50% 98%;           /* #f7f9fc ice white */
  --foreground: 226 66% 13%;           /* #0b1437 */
  --card: 0 0% 100%;
  --card-foreground: 226 66% 13%;
  --secondary: 220 40% 95%;            /* #eef2f8 */
  --muted: 220 40% 95%;
  --muted-foreground: 220 20% 45%;     /* #5c6b8a, 5.0:1 on white */
  --accent: 220 40% 95%;
  --border: 220 33% 92%;               /* #e4e9f2 */
  --input: 220 33% 92%;
  --de-ink: #0b1437;
  --de-line: #e4e9f2;
  --de-line-strong: #cbd5e6;
  --de-shadow-sm: 0 1px 2px rgba(11,20,55,0.05), 0 8px 24px -14px rgba(11,20,55,0.22);
  --de-shadow: 0 2px 4px rgba(11,20,55,0.04), 0 28px 56px -24px rgba(11,20,55,0.28);
}
.dark {
  --de-shadow-sm: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px -14px rgba(0,0,0,0.6);
  --de-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 28px 56px -24px rgba(0,0,0,0.7);
}
html[lang][lang] h1 { font-weight: 700; letter-spacing: -0.04em; }
html[lang][lang] h2 { font-weight: 600; letter-spacing: -0.03em; }
html[lang][lang] h3 { font-weight: 600; }
html[lang][lang] .de-hero-headline { font-weight: 700; letter-spacing: -0.045em; }
html[lang][lang] .de-hero-headline .gradient-word {
  background: var(--de-gradient); -webkit-background-clip: text; background-clip: text;
  color: transparent !important; -webkit-text-fill-color: transparent;
}
html[lang][lang] .shortlist svg { stroke: var(--de-violet); stroke-width: 2.5; }
html[lang][lang] .de-hero-badge {
  background: hsl(var(--card)); border: 1px solid hsl(var(--border)); border-radius: 999px;
  padding: 8px 16px; box-shadow: var(--de-shadow-sm);
}
html[lang][lang] .de-hero-badge .dot { background: var(--de-accent); }
html[lang][lang] [class*="btn-primary"],
html[lang][lang] [class*="cta-primary"],
html[lang][lang] .blog-cta a,
html[lang][lang] .blog-content .kg-btn,
html[lang][lang] .faq-cta-btn { border-radius: var(--de-radius-sm); box-shadow: 0 10px 24px -12px rgba(37,99,235,0.6); }
html[lang][lang] .nav-cta-btn { border-radius: 10px; box-shadow: 0 8px 20px -10px rgba(37,99,235,0.6); }
html[lang][lang] [class*="btn-secondary"],
html[lang][lang] [class*="cta-secondary"] { border-radius: var(--de-radius-sm); }
html[lang][lang] [class*="-card"] { border-radius: var(--de-radius); box-shadow: var(--de-shadow-sm); }
html[lang][lang] .de-nav { box-shadow: 0 1px 0 hsl(var(--border)); border-bottom: 0; background: hsla(var(--background) / 0.96); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
html[lang][lang] .answer-block { border-radius: 0 var(--de-radius-sm) var(--de-radius-sm) 0; }