*{box-sizing:border-box;margin:0;padding:0}
/* Flat gradient fallback for when no admin-picked background is set yet
   (login.html's own JS overwrites background-image once loaded) — subtle
   depth instead of a totally flat fill, matching css/landing.css's
   .hero-split-img fallback for the same "not configured yet" state. */
body{font-family:var(--font-body);background:linear-gradient(135deg,var(--surface),var(--bg));background-size:cover;background-position:center;background-attachment:fixed;color:var(--text);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem}
/* M155: max-width reconciled to 420px, matching register.css's .card —
   was 400px, an unexplained 20px copy/paste drift between the two
   near-identical auth cards, not an intentional design difference. */
.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:2.5rem 2rem;width:100%;max-width:420px;box-shadow:var(--shadow-l)}
.logo{text-align:center;margin-bottom:2rem}
.logo-flag{font-size:3rem;margin-bottom:.5rem}
.logo h1{font-family:var(--font-display);font-size:1.6rem;color:#fff}
.logo p{color:var(--text-muted);font-size:.85rem;margin-top:.25rem}
.field{margin-bottom:1.25rem}
.field label{display:block;font-size:.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem}
.field input{width:100%;background:var(--surface-2);border:1.5px solid var(--border);color:var(--text);border-radius:10px;padding:.7rem 1rem;font-size:1rem;font-family:var(--font-body);transition:border-color .2s}
.field input:focus{outline:none;border-color:var(--accent)}
.btn-login{width:100%;background:var(--accent);color:#0d1117;border:none;border-radius:10px;padding:.85rem;font-size:1rem;font-weight:700;font-family:var(--font-body);cursor:pointer;transition:all .2s;margin-top:.5rem}
.btn-login:hover{filter:brightness(1.1);transform:translateY(-1px)}
.btn-login:disabled{opacity:.5;cursor:not-allowed;transform:none}
.alert{border-radius:8px;padding:.75rem 1rem;font-size:.9rem;margin-bottom:1.25rem;display:none}
.alert.error{background:var(--red-soft);border-left:3px solid var(--red);color:var(--red)}
.alert.warn{background:var(--accent-soft);border-left:3px solid var(--accent);color:var(--accent)}
/* M156: base spinner look/size now comes from shared.css's canonical
   .spinner (18px, was this file's own 16px — a ~2px, imperceptible
   change); margin-right is real and page-specific (this button's label
   has no literal space before it, unlike some other pages' "spinner +
   space + text" markup), so it stays as a residual override. */
.spinner{margin-right:.4rem}