/* ---- reset / globals (reuse what you already have) ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:"Roboto",Arial,sans-serif;background:#f4fdf4;color:#333;display:flex;flex-direction:column;min-height:100vh;}
a{text-decoration:none;color:#28a745;font-weight:600;}
nav{display:flex;justify-content:space-between;align-items:center;background:#28a745;padding:.6rem 1.5rem;color:#fff;}
nav .logo{display:flex;align-items:center;gap:10px;}
nav .logo img{height:55px;}
.logo-text span{font-weight:700;}
.logo-text .slogan{font-size:.8rem;font-style:italic;}
#theme-toggle{background:none;border:none;font-size:1.3rem;cursor:pointer;color:#fff;}
/* ---- card ---- */
.login-card{background:#fff;margin:3rem auto;padding:2rem 2.5rem;border-radius:14px;box-shadow:0 10px 26px rgba(0,0,0,.08);max-width:420px;width:90%;text-align:center;}
.login-card h2{color:#28a745;margin-bottom:1.4rem;}
.login-card input{width:100%;padding:.9rem 1rem;margin:.4rem 0 1.1rem;border:1px solid #cdd8cd;border-radius:8px;font-size:.95rem;transition:border .25s;}
.login-card input:focus{border-color:#28a745;outline:none;}
.login-card button{width:100%;background:#28a745;color:#fff;padding:.9rem 1rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .25s;}
.login-card button:hover{background:#1e8b36;}
#loginMessage{margin-top:1rem;font-size:.9rem;}
.login-links{margin-top:1.2rem;font-size:.85rem;display:flex;justify-content:center;gap:.4rem;}
/* ---- footer ---- */
footer{background:#000;color:#fff;text-align:center;padding:1rem 0;margin-top:auto;}
/* ---- dark mode ---- */
body.dark-mode{background:#121212;color:#e5e5e5;}
body.dark-mode nav{background:#1e1e1e;}
body.dark-mode .login-card{background:#1c1c1c;box-shadow:0 6px 18px rgba(0,0,0,.5);}
body.dark-mode .login-card input{background:#262626;border-color:#444;color:#e5e5e5;}
body.dark-mode .login-card input:focus{border-color:#32cd32;}
body.dark-mode footer{background:#1e1e1e;}
/* ---- responsive tweaks ---- */
@media(max-width:480px){
  nav .logo img{height:45px;}
  .login-card{padding:1.8rem 1.4rem;}
}