body {
            font-family: 'Inter', 'Segoe UI', Arial, sans-serif !important;
            letter-spacing: 0.01em;
        }
        .login-logo {
            width: 70px !important;
            height: 70px !important;
            object-fit: contain;
            margin-bottom: 10px;
            border-radius: 14px;
            box-shadow: 0 2px 16px #d1d5db44;
            background: #fff;
            display: inline-block;
            transition: background 0.2s, box-shadow 0.3s;
        }
        .brand-text {
            font-weight: 700;
            letter-spacing: 1px;
            color: #2843b9;
            margin-bottom: 10px;
            font-size: 1.25rem;
        }
        .login-card {
            background: rgba(255,255,255,0.98);
            border-radius: 1.3rem;
            box-shadow: 0 8px 32px rgba(44,54,120,0.14);
            margin-top: 1.7rem;
            margin-bottom: 1.7rem;
            border: none;
            transition: background 0.3s, box-shadow 0.3s;
        }
        body.bg-gradient-primary {
            background: linear-gradient(117deg, #4e73df 0, #38bdf8 100%)!important;
        }
        .form-control {
            border-radius: 0.9rem;
            box-shadow: none;
            border: 1px solid #e5e7eb;
            font-size: 1.04rem;
            padding: 0.75em 1em;
        }
        .form-control:focus {
            border-color: #4e73df;
            box-shadow: 0 0 0 2px #4e73df22;
        }
        .btn-primary {
            border-radius: 2em;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: linear-gradient(90deg,#4e73df,#38bdf8);
            border: none;
            box-shadow: 0 3px 18px #5a9fff33;
            transition: background 0.2s, box-shadow 0.3s;
        }
        .btn-primary:hover, .btn-primary:focus {
            background: linear-gradient(90deg,#2843b9,#38bdf8);
            box-shadow: 0 6px 24px #4e73df22;
        }
        .card-body {
            padding: 2.3rem 2rem 2rem 2rem;
        }
        .alert {
            border-radius: 1em;
            font-size: 1em;
        }
        @media (max-width:600px){
          .login-card {
            padding: 0.3rem;
            border-radius: 0.85rem;
            margin-top: 1rem;
            margin-bottom: 1rem;
            box-shadow: 0 2px 16px rgba(60,80,130,0.10);
          }
          .brand-text { font-size: 1.07rem; }
          .login-logo { width: 52px !important; height: 52px !important; }
          .card-body { padding: 1.5rem 1rem 1.3rem 1rem;}
        }
        /* Dark Mode */
        body.dark-mode {
            background: linear-gradient(120deg, #10192b 0, #18304b 100%) !important;
            color: #e2e8f0;
        }
        body.dark-mode .login-card {
            background: rgba(32,34,54,0.99);
            box-shadow: 0 8px 40px rgba(32,46,90,0.19);
        }
        body.dark-mode .brand-text {
            color: #a7b4fa;
        }
        body.dark-mode .login-logo {
            background: #232946;
            box-shadow: 0 2px 12px #14172977;
        }
        body.dark-mode .form-control {
            background: #23243b;
            border: 1px solid #363852;
            color: #f1f5f9;
        }
        body.dark-mode .form-control:focus {
            border-color: #506cf0;
            box-shadow: 0 0 0 2px #6574ff33;
        }
        body.dark-mode .btn-primary {
            background: linear-gradient(90deg,#5a62d8,#1ca7e7);
            color: #e2e8f0;
        }
        body.dark-mode .alert {
            background: #202142;
            color: #cdd5fc;
            border: none;
        }
        body.dark-mode .text-light {
            color: #cbd5e1 !important;
        }
        .footer-credit {
    opacity: .78;
    font-size: 14px;
}