/* Shared styles for every page. Page-specific rules live in the page's own CSS file,
   which is linked after this one so it can override anything here. */

:root{
  --bg:#f4f5f9; --surface:#ffffff; --surface-2:#f9fafb; --text:#16181f; --muted:#6b7280;
  --border:#e3e5ec; --primary:#4f46e5; --primary-hover:#4338ca; --primary-text:#ffffff;
  --danger:#dc2626; --danger-hover:#b91c1c; --success:#15803d; --radius:14px; --radius-sm:8px;
  --shadow:0 1px 2px rgba(16,17,23,.04), 0 12px 28px -8px rgba(16,17,23,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1115; --surface:#171a21; --surface-2:#1d212a; --text:#e7e9ee; --muted:#9298a6;
    --border:#2a2e38; --primary:#6366f1; --primary-hover:#7c7ff0; --primary-text:#ffffff;
    --danger-hover:#ef4444;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 12px 28px -8px rgba(0,0,0,.5);
  }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}

/* Top bar */
.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:20px 24px;border-bottom:1px solid var(--border);background:var(--surface)}
.brand{font-weight:700;font-size:16px;letter-spacing:-.01em;display:flex;align-items:center;gap:8px;justify-self:start;text-decoration:none;color:var(--text)}
.brand-spacer{visibility:hidden;justify-self:end}
.brand-mark{width:22px;height:22px;border-radius:7px;background:var(--primary);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:800}
.nav-links{display:flex;gap:32px;justify-self:center}
.nav-links a{color:var(--muted);text-decoration:none;font-size:16px;font-weight:600;padding:8px 4px;border-bottom:2px solid transparent}
.nav-links a:hover{color:var(--text)}
.nav-links a.current{color:var(--primary);border-bottom-color:var(--primary)}
@media (max-width:640px){
  .topbar{grid-template-columns:1fr;row-gap:12px}
  .brand{justify-self:center}
  .brand-spacer{display:none}
  .nav-links{justify-self:center;flex-wrap:wrap;justify-content:center;gap:20px;font-size:15px}
}

/* Centered single-card page layout (max-width is set per page) */
.page{min-height:calc(100vh - 77px);display:flex;align-items:center;justify-content:center;padding:32px 16px}
.card{width:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}
.card h1{font-size:20px;margin:0 0 4px}
.card .subtitle{color:var(--muted);font-size:14px;margin:0 0 20px}
.demo-banner{margin:0 auto 14px;font-size:12px;text-align:center;color:var(--muted);background:var(--surface-2);border:1px dashed var(--border);border-radius:var(--radius-sm);padding:8px 10px}

/* Form fields */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text)}
.field input{width:100%;padding:10px 12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:14px;font-family:inherit}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.15)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:11px 16px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;font-family:inherit}
.btn-primary{background:var(--primary);color:var(--primary-text)}
.btn-primary:hover{background:var(--primary-hover)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary:disabled:hover{background:var(--primary)}

/* Messages */
.msg{font-size:13px;border-radius:var(--radius-sm);padding:10px 12px;margin-bottom:14px;display:none}
.msg.show{display:block}
.msg.error{background:rgba(220,38,38,.08);color:var(--danger);border:1px solid rgba(220,38,38,.2)}
.msg.success{background:rgba(21,128,61,.08);color:var(--success);border:1px solid rgba(21,128,61,.2)}