/* =============================================================================
   app.css — shared styles for all Seven Riddles APP pages (not the splash).
   Brand tokens + base layout + sticky nav + footer + reusable form/card/button.
   Mobile-first. Loaded by layout/header.php.
   ============================================================================= */

/* --- Brand tokens (locked palette + fonts) -------------------------------- */
:root{
  --navy:#010823; --navy-2:#0a1233; --glow:#16204a;
  --orange:#f47a1f; --orange-lt:#ff9b3f;
  --ink:#eef1fb; --muted:#8b93bd; --line:rgba(139,147,189,.2);
  --ok:#3fae5f; --err:#e06a6a;
  --font-display:'Saira Condensed','Saira',system-ui,Arial,sans-serif;
  --font-body:'Saira',system-ui,Arial,sans-serif;
}

/* --- Reset / base --------------------------------------------------------- */
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);background:var(--navy);color:var(--ink);
  line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}
a{color:var(--orange-lt);text-decoration:none}
a:hover{text-decoration:underline}

/* --- Sticky brand nav bar (global header, §2) ----------------------------- */
.sr-bar{position:sticky;top:0;z-index:10;display:flex;align-items:center;
  padding:calc(.7rem + env(safe-area-inset-top)) 1.15rem .7rem;
  background:rgba(1,8,35,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.sr-bar__brand{display:flex;align-items:center;gap:.6rem;color:var(--ink)}
.sr-bar__brand img{display:block}
.sr-bar__brand span{font-family:var(--font-display);font-weight:900;text-transform:uppercase;
  letter-spacing:.02em;font-size:1.15rem}
.sr-bar__brand b{color:var(--orange)}
.sr-bar__dash{margin-left:1.25rem;text-decoration:none;padding:.35rem .9rem;border-radius:999px;
  border:1px solid var(--glow,#16204a);color:var(--muted);
  font-family:var(--font-display);font-weight:700;font-size:.85rem}
.sr-bar__dash:hover{color:var(--orange);border-color:var(--orange)}

/* --- Main content column -------------------------------------------------- */
.sr-main{flex:1;width:100%;max-width:720px;margin:0 auto;
  padding:2rem 1.25rem calc(3rem + env(safe-area-inset-bottom))}

/* --- Headings + text ------------------------------------------------------ */
h1{font-family:var(--font-display);font-weight:900;text-transform:uppercase;
  font-size:clamp(1.9rem,6.5vw,2.8rem);line-height:1.05;margin-bottom:.6rem}
h1 .a{color:var(--orange)}
h2{font-family:var(--font-display);font-weight:800;text-transform:uppercase;
  color:var(--orange-lt);font-size:clamp(1.1rem,4.5vw,1.4rem);margin:1.6rem 0 .5rem}
p{margin-bottom:.85rem;color:#d7dcf3}

/* --- Forms ---------------------------------------------------------------- */
label{display:block;font-family:var(--font-display);font-weight:700;text-transform:uppercase;
  letter-spacing:.06em;font-size:.82rem;margin:.9rem 0 .35rem}
input,textarea,select{width:100%;font-family:var(--font-body);font-size:1rem;line-height:1.25;color:var(--ink);
  background:var(--navy-2);border:1px solid rgba(139,147,189,.35);border-radius:10px;
  padding:.8rem .9rem;outline:none;transition:border-color .15s ease}
input:focus,textarea:focus,select:focus{border-color:var(--orange)}
textarea{min-height:130px;resize:vertical}

/* --- Buttons -------------------------------------------------------------- */
.btn{display:inline-block;font-family:var(--font-display);font-weight:800;text-transform:uppercase;
  letter-spacing:.1em;font-size:1rem;color:#1a0e02;cursor:pointer;border:0;border-radius:999px;
  padding:.85rem 1.8rem;background:linear-gradient(180deg,var(--orange-lt),var(--orange));
  box-shadow:0 10px 30px rgba(244,122,31,.35);transition:transform .12s ease}
.btn:hover{transform:translateY(-2px);text-decoration:none}
.btn:active{transform:scale(.98)}
.btn--ghost{background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none}

/* --- Cards + banners ------------------------------------------------------ */
.card{background:var(--navy-2);border:1px solid var(--line);border-radius:14px;padding:1.15rem 1.25rem;margin-bottom:1rem}
.banner{border-radius:10px;padding:.9rem 1.1rem;margin-bottom:1.2rem}
.banner--ok{background:rgba(40,120,60,.25);border:1px solid var(--ok);color:#d7f5e0}
.banner--err{background:rgba(150,40,40,.25);border:1px solid var(--err);color:#f5d7d7}

/* --- Footer (normal pages only, §2) --------------------------------------- */
.sr-footer{border-top:1px solid var(--line);color:var(--muted);font-size:.85rem;
  padding:1.4rem 1.25rem calc(2rem + env(safe-area-inset-bottom));text-align:center}
.sr-footer__links{display:flex;flex-wrap:wrap;justify-content:center;gap:.35rem 1.1rem;margin-bottom:.6rem;
  font-family:var(--font-display);font-weight:600;text-transform:uppercase;letter-spacing:.06em;font-size:.8rem}