/* BETSOL Assist — Zmanda-aligned brand system.
   Palette: primary blue #2675EC with navy depths; blue + neutrals carry 90%+
   of every surface. Type: Plus Jakarta Sans. */

:root {
  /* Primary blue family */
  --blue-50:  #E8F1FA;
  --blue-100: #A9C8EC;
  --blue-400: #2675EC;
  --blue-700: #1E409B;
  --blue-800: #173A72;
  --blue-900: #0F264C;
  --blue-1000:#08132C;

  /* Neutrals & text */
  --ink:        #1E232A;
  --ink-body:   #323A43;
  --ink-muted:  #5B6876;
  --ink-light:  #8E9DA9;
  --border:     #E6ECF3;
  --border-strong:#D3DEDC;
  --surface:    #F5F5F5;
  --white:      #FFFFFF;

  /* Semantic (used sparingly, for state only) */
  --ok:    #0F7B4F;
  --warn:  #A04400;
  --err:   #B3261E;

  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(15,38,76,.06), 0 1px 3px rgba(15,38,76,.04);
  --shadow-md: 0 4px 16px rgba(15,38,76,.08);
  --shadow-lg: 0 18px 48px rgba(8,19,44,.18);
  --maxw: 1120px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Plus Jakarta Sans", system-ui, "Segoe UI", Arial, sans-serif;
  color: var(--ink-body);
  background: var(--white);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: var(--ink); line-height: 1.2; font-weight: 800; }
h1 { font-size: clamp(30px, 4.4vw, 52px); font-weight: 900; letter-spacing: -0.02em; }
h2 { font-size: clamp(22px, 2.6vw, 32px); letter-spacing: -0.015em; }
h3 { font-size: 17px; }
p  { color: var(--ink-body); }
a  { color: var(--blue-400); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--ink-muted); }
.small { font-size: 13px; }
.mono  { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.center { text-align: center; }
.hidden { display: none !important; }

/* ---------- Decorative halftone (one region per page) ---------- */
.halftone-dark {
  background-image: radial-gradient(circle, rgba(169,200,236,.18) 1px, transparent 1.5px);
  background-size: 10px 10px;
}
.halftone-light {
  background-image: radial-gradient(circle, rgba(169,200,236,.35) 1px, transparent 1.5px);
  background-size: 8px 8px;
}

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.section.tight { padding: 48px 0; }
.section.gray { background: var(--surface); }

/* ---------- Top navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { max-width: var(--maxw); margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 16px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--ink-body); font-size: 14px; font-weight: 600; }
.nav-links a:hover { color: var(--blue-400); text-decoration: none; }

.nav.dark { background: var(--blue-900); border-bottom-color: rgba(169,200,236,.18); }
.nav.dark .nav-links a { color: #C9D8EC; }
.nav.dark .nav-links a:hover { color: var(--white); }

/* ---------- Logo ---------- */
.logo { display: flex; align-items: center; gap: 9px; font-weight: 900; font-size: 18px; color: var(--ink); letter-spacing: -0.02em; }
.logo:hover { text-decoration: none; }
.logo .mark {
  width: 28px; height: 28px; border-radius: 8px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--blue-400) 0%, var(--blue-700) 100%);
  display: grid; place-items: center; color: #fff; font-size: 15px; font-weight: 900;
}
.logo.on-dark { color: var(--white); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-size: 14px; font-weight: 700;
  padding: 11px 20px; border-radius: 10px; border: 1px solid transparent;
  cursor: pointer; transition: background .15s, border-color .15s, color .15s, transform .05s;
  text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 2px; }
.btn-primary { background: var(--blue-400); color: #fff; }
.btn-primary:hover { background: var(--blue-700); }
.btn-outline { background: transparent; color: var(--blue-400); border-color: var(--border-strong); }
.btn-outline:hover { border-color: var(--blue-400); background: var(--blue-50); }
.btn-ghost { background: transparent; color: var(--ink-body); }
.btn-ghost:hover { background: var(--surface); }
.btn-danger { background: transparent; color: var(--err); border-color: #F0D5D3; }
.btn-danger:hover { background: #FDF3F2; }
.btn-on-dark { background: #fff; color: var(--blue-900); }
.btn-on-dark:hover { background: var(--blue-50); }
.btn-sm { padding: 7px 13px; font-size: 13px; border-radius: 8px; }
.btn-lg { padding: 14px 26px; font-size: 15px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-block { width: 100%; }

/* ---------- Cards ---------- */
.card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm);
}
.card-emphasis { background: var(--blue-50); border-color: var(--blue-100); }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

/* ---------- Forms ---------- */
label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-body); margin-bottom: 6px; }
input[type=text], input[type=email], input[type=password], input[type=number], textarea, select {
  width: 100%; font-family: inherit; font-size: 14px; color: var(--ink);
  padding: 10px 12px; border: 1px solid var(--border-strong); border-radius: 10px;
  background: var(--white); outline: none; transition: border-color .15s, box-shadow .15s;
}
textarea { line-height: 1.55; resize: vertical; }
input:focus, textarea:focus, select:focus { border-color: var(--blue-400); box-shadow: 0 0 0 3px rgba(38,117,236,.12); }
.field { margin-bottom: 16px; }
.field-hint { font-size: 12px; color: var(--ink-muted); margin-top: 5px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .row-2 { grid-template-columns: 1fr; } }

/* Choice cards (radio as card) */
.choice { display: grid; gap: 12px; }
.choice-card {
  border: 1.5px solid var(--border-strong); border-radius: var(--radius);
  padding: 14px 16px; cursor: pointer; background: var(--white); transition: border-color .15s, background .15s;
}
.choice-card:hover { border-color: var(--blue-100); }
.choice-card.selected { border-color: var(--blue-400); background: var(--blue-50); }
.choice-card h4 { font-size: 14.5px; margin-bottom: 3px; }
.choice-card p { font-size: 12.5px; color: var(--ink-muted); margin: 0; }

/* ---------- Badges & pills ---------- */
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--blue-50); color: var(--blue-700); }
.badge-neutral { background: var(--surface); color: var(--ink-muted); }
.badge-ok { background: #E7F4EE; color: var(--ok); }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; color: var(--blue-400); }

/* ---------- Feedback ---------- */
.msg { font-size: 13px; margin-top: 10px; min-height: 18px; }
.msg.ok { color: var(--ok); } .msg.err { color: var(--err); }
.notice { border: 1px solid var(--border); border-left: 3px solid var(--blue-400); background: var(--blue-50); border-radius: 8px; padding: 12px 14px; font-size: 13px; color: var(--ink-body); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .6px; color: var(--ink-muted); font-weight: 700; padding: 10px 12px; border-bottom: 1px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }

/* ---------- Code / snippet ---------- */
.snippet {
  background: var(--blue-1000); color: #9FD0FF; border-radius: 10px;
  padding: 14px 16px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; overflow-x: auto; line-height: 1.6;
}
.snippet b { color: #FFD9A8; font-weight: 600; }

/* ---------- Footer ---------- */
.footer { background: var(--blue-900); color: #B9CBE2; padding: 40px 0; font-size: 13px; }
.footer a { color: #DCE8F6; }
.footer .wrap { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }

/* ---------- Accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}
:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 2px; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; border-radius: 8px; z-index: 100; }