/* ---- Thème & variables ---- */
:root{
  --bg:#1e1e1e;
  --bg-grad:
    radial-gradient(1200px 800px at 10% -10%, #0e1a1f 0%, transparent 50%),
    radial-gradient(1600px 900px at 110% 20%, #1a0f1d 0%, transparent 60%);
  --surface:#2b2b2b;
  --surface-2:#262626;
  --text:#e8e8e8;
  --muted:#bdbdbd;
  --accent:#00bcd4;      /* cyan principal */
  --accent-600:#0097a7;  /* hover/focus */
  --border:#393939;
  --ring: rgba(0,188,212,.25);
  --ok:#47d147;
  --err:#ff6b6b;

  --radius:14px;
  --fs:14px;
}

/* ---- Base ---- */
*{ box-sizing:border-box }
html,body{ height:100% }
body.auth{
  margin:0; color:var(--text);
  background:
    linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0) 220px),
    var(--bg-grad),
    var(--bg);
  font: var(--fs)/1.45 system-ui,-apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

/* ---- Topbar ---- */
.topbar{
  position:sticky; top:0; z-index:10;
  background:linear-gradient(180deg, rgba(0,0,0,.25), transparent), var(--surface);
  border-bottom:1px solid var(--border);
  backdrop-filter: blur(6px);
  display:flex; align-items:center; justify-content:space-between;
}
.nav ul{list-style:none; margin:0; padding:10px 14px; display:flex; gap:14px; align-items:center}
.nav a{
  display:inline-block; padding:8px 10px; border-radius:8px;
  color:var(--text); text-decoration:none; border:1px solid transparent;
}
.nav a:hover{background:rgba(255,255,255,.06)}
.nav a[aria-current="page"]{color:#061018; background:var(--accent); border-color:var(--accent)}

.session{ display:flex; align-items:center; gap:10px; padding:8px 14px }

/* ---- Conteneur principal ---- */
.container{
  max-width: 980px;
  margin: 28px auto;
  padding: 16px;
}
h1{ font-size:22px; margin:8px 4px 18px; letter-spacing:.2px }

/* ---- Carte login (centrée & compacte) ---- */
.card{
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(0,0,0,.06)), var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:16px;
  box-shadow: 0 8px 20px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.03);
}

/* ---- Formulaire ---- */
.grid{ display:grid; gap:12px }
label{ display:block; font-size:12px; color:var(--muted); margin:0 0 6px }
input{
  width:100%; padding:10px 12px; border-radius:10px;
  border:1px solid var(--border); background:var(--surface-2); color:var(--text);
}
input::placeholder{ color:#9aa3ab }
input:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--ring)
}

/* ---- Boutons ---- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 14px; border:1px solid var(--border); border-radius:10px;
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(0,0,0,.04));
  color:var(--text); cursor:pointer; text-decoration:none;
}
.btn:hover{ border-color:var(--accent); box-shadow:0 0 0 3px var(--ring) }
.btn.primary{ background:var(--accent); color:#061018; border-color:var(--accent) }
.btn.primary:hover{ background:var(--accent-600); border-color:var(--accent-600) }
.btn[disabled]{ opacity:.6; cursor:progress }

/* ---- Actions / messages ---- */
.actions{ display:flex; align-items:center; gap:10px; justify-content:flex-end }
.muted{ color:var(--muted) }

/* ---- Responsive ---- */
@media (max-width: 560px){
  .container{ padding:12px; margin:18px auto }
  .card{ padding:14px }
}