@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/*
  Design tokens — light mode
  Source: lib/core/design_system/tokens.dart  (AppColors — accent + semantic)
          lib/core/design_system/theme.dart    (light ThemeData — bg, text, border)
  CSS variable names mirror tokens.dart property names in kebab-case.
*/
:root {
  /* ── Backgrounds (theme.dart light) ── */
  --background-primary:  #F5F5F7;   /* scaffoldBackgroundColor */
  --background-surface:  #FFFFFF;   /* colorScheme.surface / card / appBar */
  --background-elevated: #F0F0F2;   /* inputDecorationTheme.fillColor */

  /* ── Accent (tokens.dart AppColors) ── */
  --accent-primary: #0C99B4;        /* AppColors.accentPrimary */
  --accent-hover:   #1FCCEF;        /* AppColors.accentHover */

  /* ── Text (theme.dart light) ── */
  --text-primary:   #1A1A2E;        /* colorScheme.onSurface */
  --text-secondary: #64748B;        /* derived — not in source; standard M3 secondary */
  --text-muted:     #94A3B8;        /* derived — not in source; standard M3 muted */

  /* ── Semantic (tokens.dart AppColors) ── */
  --destructive: #E53E3E;           /* AppColors.destructive */
  --warning:     #D69E2E;           /* AppColors.warning */
  --success:     #38A169;           /* AppColors.success */

  /* ── Borders (theme.dart light) ── */
  --border-subtle: #E0E0E4;         /* dividerColor + cardTheme side */
  --border-input:  #D0D0D4;         /* inputDecorationTheme border */

  /* ── Radius (theme.dart — same both modes) ── */
  --radius-sm: 6px;
  --radius-md: 8px;   /* inputs, buttons: BorderRadius.circular(8) */
  --radius-lg: 12px;  /* cards: BorderRadius.circular(12) */

  /* ── Shadows (light mode) ── */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.09), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.07);

  /* ── Typography ── */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  /* ── Layout ── */
  --max-w: 1200px;
  --nav-h: 68px;

  /* ── Legacy aliases (HTML inline styles use these old names) ── */
  --surface-warm: var(--background-elevated);
  --teal:         var(--accent-primary);
  /* short-form aliases used throughout HTML */
  --bg-primary:    var(--background-primary);
  --bg-surface:    var(--background-surface);
  --bg-elevated:   var(--background-elevated);
  --accent:        var(--accent-primary);
  --text-primary-alias: var(--text-primary);
  --border:        var(--border-subtle);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background-primary);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.7rem); }
h4 { font-size: 1.15rem; }
p  { color: var(--text-secondary); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--radius-md);
  font-family: var(--font); font-size: 0.95rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s ease; border: none; white-space: nowrap;
}
.btn-primary { background: var(--accent-primary); color: #FFFFFF; }
.btn-primary:hover {
  background: var(--accent-hover); transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(12,153,180,0.25);
}
.btn-outline {
  background: transparent; color: var(--text-primary);
  border: 1.5px solid var(--border-subtle);
}
.btn-outline:hover { border-color: var(--accent-primary); color: var(--accent-primary); }
.btn-ghost { background: transparent; color: var(--text-secondary); padding: 10px 16px; }
.btn-ghost:hover { color: var(--accent-primary); }
.btn-dark { background: var(--text-primary); color: #FFFFFF; border: 1px solid var(--text-primary); }
.btn-dark:hover { opacity: 0.88; transform: translateY(-1px); }
/* btn-white: dark button on light CTA banner background */
.btn-white { background: var(--text-primary); color: #FFFFFF; font-weight: 600; }
.btn-white:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-sm { padding: 9px 18px; font-size: 0.875rem; }

/* ── Nav ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h); display: flex; align-items: center;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(224,224,228,0.8);
  transition: background 0.3s;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo { display: flex; align-items: center; }
.nav-links { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav-links a {
  padding: 8px 14px; border-radius: var(--radius-md);
  font-size: 0.9rem; font-weight: 400; color: var(--text-secondary); transition: all 0.15s;
}
.nav-links a:hover { color: var(--text-primary); background: var(--background-elevated); }
.nav-ctas { display: flex; align-items: center; gap: 8px; }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary); border-radius: 2px; transition: all 0.2s;
}
@media (max-width: 900px) {
  .nav-links, .nav-ctas .btn-outline { display: none; }
  .nav-hamburger { display: flex; }
}

/* ── Sections ── */
section { padding: 96px 0; }
.section-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent-primary); margin-bottom: 16px;
}
.section-label::before {
  content: ''; width: 20px; height: 2px;
  background: var(--accent-primary); border-radius: 2px;
}
.section-intro { max-width: 560px; }
.section-intro p { font-size: 1.1rem; margin-top: 16px; }

/* ── Cards ── */
.card {
  background: var(--background-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 32px; transition: all 0.25s ease;
}
.card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(12,153,180,0.4); transform: translateY(-2px);
}

/* ── Hero ── */
.hero { padding-top: calc(var(--nav-h) + 80px); padding-bottom: 80px; overflow: hidden; position: relative; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% -10%, rgba(12,153,180,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 90% 80%, rgba(12,153,180,0.04) 0%, transparent 50%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(12,153,180,0.1); color: var(--accent-primary);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 14px; border-radius: 100px; margin-bottom: 24px;
  border: 1px solid rgba(12,153,180,0.25);
}
.hero h1 { margin-bottom: 24px; }
.hero h1 em { font-style: italic; color: var(--accent-primary); }
.hero-sub { font-size: 1.15rem; color: var(--text-secondary); margin-bottom: 40px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.hero-social-proof {
  margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border-subtle);
  display: flex; align-items: center; gap: 20px; font-size: 0.85rem; color: var(--text-muted);
}
.hero-visual { position: relative; }
.hero-card-stack { position: relative; height: 420px; }
.hero-card {
  position: absolute; background: var(--background-surface);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow-lg);
}
.hero-card-main { width: 100%; top: 0; left: 0; z-index: 3; }
.hero-card-behind { width: 90%; top: 20px; left: 5%; z-index: 1; opacity: 0.35; transform: rotate(-1.5deg); }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 48px; } .hero-visual { display: none; } }

/* ── Mock UI in hero card ── */
.mock-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.mock-status {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; font-weight: 600;
  color: var(--accent-primary); background: rgba(12,153,180,0.1);
  padding: 4px 10px; border-radius: 100px; border: 1px solid rgba(12,153,180,0.25);
}
.mock-status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-primary); }
.mock-title { font-family: var(--font); font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.mock-meta { font-size: 0.75rem; color: var(--text-muted); }
.mock-divider { height: 1px; background: var(--border-subtle); margin: 16px 0; }
.mock-field { margin-bottom: 12px; }
.mock-label { font-size: 0.7rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 4px; }
.mock-value { font-size: 0.875rem; color: var(--text-primary); }
.mock-bar-wrap { height: 6px; background: var(--background-elevated); border-radius: 3px; margin-top: 8px; overflow: hidden; }
.mock-bar { height: 100%; border-radius: 3px; background: var(--accent-primary); }
.mock-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.mock-chip { font-size: 0.72rem; padding: 3px 10px; border-radius: 100px; border: 1px solid var(--border-subtle); color: var(--text-secondary); }
.mock-checkpoint {
  display: flex; align-items: center; gap: 10px; padding: 10px;
  border-radius: var(--radius-md); background: var(--background-elevated); margin-bottom: 8px; font-size: 0.8rem;
}
.mock-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

/* ── Features grid ── */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 64px; }
@media (max-width: 900px) { .features-grid { grid-template-columns: 1fr; } }
@media (min-width: 600px) and (max-width: 900px) { .features-grid { grid-template-columns: 1fr 1fr; } }
.feature-card { position: relative; overflow: hidden; }
.feature-icon {
  width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center;
  justify-content: center; margin-bottom: 20px;
  background: rgba(12,153,180,0.1); border: 1px solid rgba(12,153,180,0.2);
}
.feature-icon svg { width: 22px; height: 22px; color: var(--accent-primary); }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; line-height: 1.65; }

/* ── How it works ── */
.hiw-steps { margin-top: 64px; }
.hiw-step { display: grid; grid-template-columns: 80px 1fr; gap: 32px; align-items: start; margin-bottom: 48px; position: relative; }
.hiw-step:not(:last-child)::after {
  content: ''; position: absolute; left: 39px; top: 80px; bottom: -16px;
  width: 2px; background: linear-gradient(var(--border-subtle), transparent);
}
.hiw-num {
  width: 80px; height: 80px; border-radius: 50%; background: var(--background-surface);
  border: 2px solid var(--border-subtle); display: flex; align-items: center; justify-content: center;
  font-family: var(--font); font-size: 1.4rem; font-weight: 700; color: var(--accent-primary); flex-shrink: 0;
}
.hiw-content h3 { margin-bottom: 10px; }
.hiw-content p { font-size: 0.95rem; }

/* ── Pricing ── */
.pricing-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  margin-top: 64px; max-width: 860px; margin-left: auto; margin-right: auto;
}
@media (max-width: 700px) { .pricing-grid { grid-template-columns: 1fr; } }
.pricing-card { position: relative; }
.pricing-card.featured { background: var(--background-elevated); border-color: var(--accent-primary); box-shadow: 0 0 0 1px var(--accent-primary), var(--shadow-md); }
.pricing-card.featured p, .pricing-card.featured .pricing-feature { color: var(--text-secondary); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent-primary); color: white; font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 14px; border-radius: 100px; white-space: nowrap;
}
.pricing-tier { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 8px; }
.pricing-price { margin: 16px 0 4px; }
.pricing-price strong { font-family: var(--font); font-weight: 700; font-size: 2.4rem; color: var(--text-primary); }
.pricing-price span { font-size: 0.875rem; color: var(--text-muted); }
.pricing-annual { font-size: 0.8rem; color: var(--accent-primary); margin-bottom: 20px; font-weight: 500; }
.pricing-divider { height: 1px; background: var(--border-subtle); margin: 20px 0; }
.pricing-features { list-style: none; }
.pricing-feature {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.875rem; color: var(--text-secondary); padding: 6px 0;
}
.pricing-feature::before {
  content: ''; width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0; margin-top: 1px;
  background-color: rgba(12,153,180,0.12);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230C99B4'%3E%3Cpath d='M6.5 11.5L3 8l1-1 2.5 2.5 5-5 1 1z'/%3E%3C/svg%3E");
  background-size: cover;
}
.pricing-cta { width: 100%; margin-top: 24px; justify-content: center; }
.pricing-card.featured .btn-primary { background: var(--accent-primary); color: white; }
.pricing-card.featured .btn-primary:hover { background: var(--accent-hover); }

/* ── Testimonials ── */
.testimonials-section { background: var(--background-elevated); }
.testimonials-section h2 { color: var(--text-primary); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 64px; }
@media (max-width: 900px) { .testimonials-grid { grid-template-columns: 1fr; } }
.testimonial-card { background: var(--background-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: 28px; }
.testimonial-quote { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testimonial-author { font-size: 0.8rem; color: var(--text-muted); }
.testimonial-author strong { display: block; color: var(--text-primary); font-size: 0.875rem; margin-bottom: 2px; }

/* ── Use cases ── */
.use-cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 64px; }
@media (max-width: 700px) { .use-cases-grid { grid-template-columns: 1fr; } }
.use-case-card { padding: 36px; position: relative; overflow: hidden; }
.use-case-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
  background: var(--accent-primary); border-radius: 4px 0 0 4px; opacity: 0; transition: opacity 0.2s;
}
.use-case-card:hover::before { opacity: 1; }
.use-case-card h3 { margin-bottom: 12px; }
.use-case-card p { font-size: 0.9rem; margin-bottom: 20px; }
.use-case-link { font-size: 0.875rem; font-weight: 500; color: var(--accent-primary); display: inline-flex; align-items: center; gap: 4px; }
.use-case-link::after { content: '→'; transition: transform 0.2s; }
.use-case-card:hover .use-case-link::after { transform: translateX(4px); }

/* ── Security ── */
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-top: 64px; }
@media (max-width: 800px) { .security-grid { grid-template-columns: 1fr; gap: 40px; } }
.security-items { display: flex; flex-direction: column; gap: 20px; }
.security-item { display: flex; gap: 16px; align-items: flex-start; }
.security-icon {
  width: 40px; height: 40px; border-radius: 10px; background: var(--background-elevated);
  border: 1px solid var(--border-subtle); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.security-icon svg { width: 20px; height: 20px; color: var(--accent-primary); }
.security-item h4 { margin-bottom: 4px; font-size: 0.95rem; }
.security-item p { font-size: 0.85rem; }

/* ── CTA banner ── */
.cta-banner {
  background: var(--background-elevated); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 80px; text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -40%; right: -10%; width: 400px; height: 400px;
  border-radius: 50%; background: radial-gradient(circle, rgba(12,153,180,0.1), transparent 70%);
}
.cta-banner h2 { color: var(--text-primary); margin-bottom: 16px; }
.cta-banner p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 36px; }
.cta-banner-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Footer ── */
.footer { background: var(--background-surface); color: var(--text-secondary); padding: 64px 0 32px; border-top: 1px solid var(--border-subtle); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand { font-family: var(--font); font-weight: 600; font-size: 1.1rem; color: var(--text-primary); margin-bottom: 12px; }
.footer-desc { font-size: 0.85rem; line-height: 1.65; max-width: 260px; }
.footer-col h5 { color: var(--text-primary); font-family: var(--font); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 14px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-links a { font-size: 0.85rem; color: var(--text-muted); transition: color 0.15s; }
.footer-links a:hover { color: var(--text-primary); }
.footer-bottom { border-top: 1px solid var(--border-subtle); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; flex-wrap: wrap; gap: 12px; }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { color: var(--text-muted); transition: color 0.15s; }
.footer-legal a:hover { color: var(--text-primary); }

/* ── Blog ── */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 56px; }
@media (max-width: 900px) { .blog-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .blog-grid { grid-template-columns: 1fr; } }
.blog-card { display: flex; flex-direction: column; }
.blog-card-img { height: 200px; background: var(--background-elevated); border-radius: var(--radius-md) var(--radius-md) 0 0; overflow: hidden; border: 1px solid var(--border-subtle); border-bottom: none; display: flex; align-items: center; justify-content: center; }
.blog-card-body { flex: 1; border: 1px solid var(--border-subtle); border-radius: 0 0 var(--radius-md) var(--radius-md); padding: 24px; background: var(--background-surface); transition: all 0.2s; }
.blog-card:hover .blog-card-body { box-shadow: var(--shadow-md); border-color: rgba(12,153,180,0.3); }
.blog-tag { display: inline-block; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-primary); margin-bottom: 10px; }
.blog-card-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
.blog-card-body p { font-size: 0.85rem; }
.blog-card-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; font-size: 0.78rem; color: var(--text-muted); }

/* ── Inner page hero ── */
.page-hero { padding-top: calc(var(--nav-h) + 64px); padding-bottom: 64px; border-bottom: 1px solid var(--border-subtle); }
.page-hero-label { margin-bottom: 16px; }
.page-hero h1 { max-width: 720px; margin-bottom: 20px; }
.page-hero p { font-size: 1.1rem; max-width: 560px; }

/* ── About ── */
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-top: 64px; }
@media (max-width: 800px) { .about-story { grid-template-columns: 1fr; } }
.about-story p { margin-bottom: 16px; }
.about-values { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 64px; }
@media (max-width: 600px) { .about-values { grid-template-columns: 1fr; } }
.value-card { padding: 28px; }
.value-card h4 { margin-bottom: 8px; }
.value-card p { font-size: 0.875rem; }

/* ── Animations ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.fade-up { animation: fadeUp 0.6s ease forwards; }
.fade-up-1 { animation-delay: 0.1s; opacity: 0; }
.fade-up-2 { animation-delay: 0.2s; opacity: 0; }
.fade-up-3 { animation-delay: 0.3s; opacity: 0; }
.fade-up-4 { animation-delay: 0.4s; opacity: 0; }

/* ── Utilities ── */
.text-center { text-align: center; }
.text-teal { color: var(--accent-primary); }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.bg-surface { background: var(--background-surface); }
.bg-warm    { background: var(--background-elevated); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }